阅读说明：本技术 海滨钛锆砂矿选矿系统和选矿方法 (Beneficiation system and beneficiation method for seaside titanium zirconium placer ) 是由 谭健锋 李吕华 王祥丁 刘永雄 黄翔 于 2020-11-18 设计创作，主要内容包括：一种海滨钛锆砂矿选矿系统,包括给料设备,筛分设备,洗矿设备,湿式磁选设备,螺旋溜槽设备以及摇床设备。洗矿设备将钛锆砂矿进行洗涤,并与水配置成浓度为30-35％的矿浆输送至湿式磁选设备。湿式磁选设备对矿浆进行磁选,以分离出导磁矿和不导磁矿。第一螺旋溜槽将不导磁矿进行分选,得到第一锆英砂精矿、第一中矿以及第一尾矿。第二螺旋溜槽将第一中矿进行分选,得到第二锆英砂精矿、第二中矿以及第一尾砂。第三螺旋溜槽将第一尾矿进行分选,以得到第三精矿和第二尾砂。摇床设备将第二中矿和第三精矿进行重选配浆后进行摇床分选,得到第三锆英砂精矿,第一金红石精矿以及第三尾砂。本发明实施例还提供了一种海滨钛锆砂矿选矿方法。(The utility model provides a seaside titanium zirconium placer ore dressing system, includes feeder equipment, screening equipment, ore washing equipment, wet-type magnetic separation equipment, spiral chute equipment and shaking table equipment. The ore washing equipment washes the titanium-zirconium placer, and the titanium-zirconium placer and water are prepared into ore pulp with the concentration of 30-35 percent and then the ore pulp is conveyed to the wet magnetic separation equipment. The wet magnetic separation equipment carries out magnetic separation on the ore pulp so as to separate magnetic conduction ores and non-magnetic conduction ores. The first spiral chute sorts the non-magnetic ore to obtain a first zircon sand concentrate, a first middling and a first tailing. And the second spiral chute sorts the first middlings to obtain second zircon sand concentrate, second middlings and first tailings. And the third spiral chute sorts the first tailings to obtain a third concentrate and second tailings. And the shaking table equipment performs shaking table separation after the second middling and the third concentrate are subjected to gravity separation and pulp proportioning to obtain a third zircon sand concentrate, a first rutile concentrate and third tailings. The embodiment of the invention also provides a beneficiation method for the seaside titanium zirconium placer.)

1. The seaside titanium zirconium placer beneficiation system is characterized by comprising feeding equipment, screening equipment, ore washing equipment, wet magnetic separation equipment, spiral chute equipment and shaking table equipment which are sequentially arranged;

the feeding equipment is used for conveying the titanium zirconium placer to the screening equipment;

the screening equipment is used for removing impurities from the titanium-zirconium placer;

the ore washing equipment is used for washing the titanium zirconium placer after impurity removal, and preparing the washed titanium zirconium placer and water into ore pulp with the concentration of 30-35% and conveying the ore pulp to the wet magnetic separation equipment;

the wet magnetic separation equipment is used for carrying out magnetic separation on the ore pulp so as to separate magnetic conduction ores and non-magnetic conduction ores;

the spiral chute equipment comprises a first spiral chute, a second spiral chute and a third spiral chute, wherein the first spiral chute is used for sorting the non-magnetic ore to obtain a first zircon sand concentrate, a first middling and a first tailing, the second spiral chute is used for sorting the first middling to obtain a second zircon sand concentrate, a second middling and a first tailing, and the third spiral chute is used for sorting the first tailing to obtain a third concentrate and a second tailing;

and the shaking table equipment is used for carrying out shaking table separation after the second middling and the third concentrate are subjected to gravity concentration and pulp proportioning so as to obtain a third zircon sand concentrate, a first rutile concentrate and a third tailing.

2. The seashore titanium zirconium placer beneficiation system according to claim 1, wherein the feeding apparatus comprises a hopper for carrying the titanium zirconium placer raw material, an adjustable speed electronic belt scale for weighing the titanium zirconium placer raw material, and a conveyor belt for conveying the titanium zirconium placer raw material to the screening apparatus.

3. The seaside titanium zirconium placer ore dressing system according to claim 2, further comprising a material level alarm device provided on the blanking hopper for generating an alarm signal at a low material level.

4. The seashore titanium zirconium placer beneficiation system according to claim 2, wherein the screening apparatus includes a drum screen and a swing screen, the swing screen is disposed between the drum screen and the ore washing apparatus, the conveyor belt conveys the titanium zirconium placer raw material to the drum screen, the titanium zirconium placer is screened by the drum screen, coarse-grained ore sand is removed by the swing screen, and undersize of the swing screen is conveyed to the ore washing apparatus.

5. The seashore titanium zirconium placer beneficiation system according to claim 1, wherein the titanium zirconium placer has a particle size distribution of: the mineral mass which passes through the 40-mesh sieve and does not pass through the 140-mesh sieve accounts for 65-86% of the total mineral mass, the mineral mass which passes through the 140-mesh sieve and does not pass through the 200-mesh sieve accounts for 13-34% of the total mineral mass, and the mineral mass of other particles accounts for less than 1% of the total mineral mass.

6. The beneficiation method of the seaside titanium zirconium placer is characterized by comprising the following steps:

the method comprises the following steps: conveying the titanium-zirconium placer to screening equipment by using feeding equipment for screening;

step two: washing the undersize of the screening equipment by using ore washing equipment, and preparing the washed titanium-zirconium placer and water into ore pulp with the concentration of 30-35% and conveying the ore pulp to wet magnetic separation equipment;

step three: carrying out magnetic separation on the ore pulp by adopting the wet magnetic separation equipment so as to separate magnetic-conducting ores and non-magnetic-conducting ores;

step four: sorting the non-magnetic ore by adopting a first spiral chute to obtain a first zircon sand concentrate, a first middling and a first tailing; sorting the first middlings by adopting a second spiral chute to obtain second zircon sand concentrate, second middlings and first tailings; sorting the first tailings by using a third spiral chute to obtain a third concentrate and second tailings;

step five: and carrying out table concentration on the slurry obtained after the gravity concentration and slurry preparation of the second middling and the third concentrate by using table concentration equipment to obtain a third zircon sand concentrate, a first rutile concentrate and a third tailing.

7. The seaside titanium zirconium placer beneficiation method according to claim 6, wherein the feeding device comprises a blanking hopper, an electronic belt scale and a conveying belt, and the first step specifically comprises: the titanium zirconium placer is fed through the blanking hopper, quantitatively blanked through the electronic belt scale and conveyed to the screening equipment by the conveying belt for screening.

8. The beneficiation method for seaside titanium zirconium placer according to claim 6, wherein the third step is specifically: carrying out first wet magnetic separation on the ore pulp prepared after washing to obtain first titanium zirconium tailings and titanium rough concentrate; performing second wet magnetic separation on the titanium rough concentrate to obtain second titanium zirconium tailings and titanium concentrate; the magnetic field intensity of the first magnetic separation is 8000-.

9. The method for beneficiation of seaside titanium zirconium placer according to claim 6, further comprising the steps of:

step six: and combining the first zircon concentrate, the second zircon concentrate and the third zircon concentrate, and concentrating and dehydrating to obtain the zircon concentrate.

10. The beneficiation method for the seaside titanium zirconium placer according to claim 6, wherein the particle size distribution of the seaside titanium zirconium placer is as follows: the mineral substances which pass through the 40-mesh sieve and do not pass through the 140-mesh sieve account for 65-86% of the total mineral substances by weight, the mineral substances which pass through the 140-mesh sieve and do not pass through the 200-mesh sieve account for 13-34% of the total mineral substances by weight, and the mineral substances of other particles account for less than 1% of the total mineral substances by weight.

Technical Field

The invention relates to the technical field of beneficiation, in particular to a titanium zirconium placer beneficiation system and a beneficiation method.

Background

The titanium resource in the world is mainly from titanium rock ore deposit and seashore titanium zirconium ore deposit with industrial value. The titanium zirconium placer is generated by weathering, crushing and enriching original ore under natural condition, and associated minerals have various types and high recovery value. The main component of the ore is ilmenite, which is associated with valuable minerals such as zircon sand, rutile, magnetite, monazite and the like, and is associated with gangue minerals such as quartz, garnet and the like, the monomer dissociation degree is higher, the raw ore has fine granularity, and the ore does not need the working procedures of crushing, grinding and screening, but has more mud content.

Common beneficiation methods for seashore titanium zirconium placer include gravity separation, flotation, magnetic separation, electric separation and the like, and combined beneficiation is performed by one or more beneficiation methods, but a systematic and efficient beneficiation method is not formed at present so as to adapt to large-scale and efficient continuous operation production.

Disclosure of Invention

The invention mainly aims to provide a titanium zirconium placer beneficiation system, and aims to solve the problem that the beneficiation method of the seashore titanium zirconium placer in the prior art cannot adapt to large-scale and efficient continuous operation production.

A seaside titanium zirconium placer beneficiation system comprises feeding equipment, screening equipment, ore washing equipment, wet magnetic separation equipment, spiral chute equipment and shaking table equipment which are sequentially arranged;

the feeding equipment is used for conveying the titanium zirconium placer to the screening equipment;

the screening equipment is used for removing impurities from the titanium-zirconium placer;

the ore washing equipment is used for washing the titanium zirconium placer after impurity removal, and preparing the washed titanium zirconium placer and water into ore pulp with the concentration of 30-35% and conveying the ore pulp to the wet magnetic separation equipment;

the wet magnetic separation equipment is used for carrying out magnetic separation on the ore pulp so as to separate magnetic conduction ores and non-magnetic conduction ores;

the spiral chute equipment comprises a first spiral chute, a second spiral chute and a third spiral chute, wherein the first spiral chute is used for sorting the non-magnetic ore to obtain a first zircon sand concentrate, a first middling and a first tailing, the second spiral chute is used for sorting the first middling to obtain a second zircon sand concentrate, a second middling and a first tailing, and the third spiral chute is used for sorting the first tailing to obtain a third concentrate and a second tailing;

and the shaking table equipment is used for carrying out shaking table separation after the second middling and the third concentrate are subjected to gravity concentration and pulp proportioning so as to obtain a third zircon sand concentrate, a first rutile concentrate and a third tailing.

Optionally, the feeding device comprises a discharging hopper, an adjustable-speed electronic belt scale and a conveying belt, the discharging hopper is used for bearing the titanium-zirconium placer raw material, the adjustable-speed electronic belt scale is used for weighing the titanium-zirconium placer raw material, and the conveying belt is used for conveying the titanium-zirconium placer raw material to the screening device.

Optionally, the seaside titanium zirconium placer ore dressing system still includes material level alarm device, material level alarm device sets up on the hopper down for produce alarm signal when low material level.

Optionally, the screening device includes a drum screen and a swing screen, the swing screen is disposed between the drum screen and the ore washing device, the conveying belt conveys the raw material of the titanium-zirconium placer to the drum screen, the titanium-zirconium placer is screened by the drum screen, coarse-grained ore sand is removed by the swing screen, and undersize of the swing screen is conveyed to the ore washing device.

Optionally, the particle size distribution of the titanium zirconium placer is as follows: the mineral substances which pass through the 40-mesh sieve and do not pass through the 140-mesh sieve account for 65-86% of the total mineral substances by weight, the mineral substances which pass through the 140-mesh sieve and do not pass through the 200-mesh sieve account for 13-34% of the total mineral substances by weight, and the mineral substances of other particles account for less than 1% of the total mineral substances by weight.

The embodiment of the invention also provides a beneficiation method for the seaside titanium zirconium placer, which comprises the following steps:

the method comprises the following steps: conveying the titanium-zirconium placer to screening equipment by using feeding equipment for screening;

step two: washing the undersize of the screening equipment by using ore washing equipment, and preparing the washed titanium-zirconium placer and water into ore pulp with the concentration of 30-35% and conveying the ore pulp to wet magnetic separation equipment;

step three: carrying out magnetic separation on the ore pulp by adopting the wet magnetic separation equipment so as to separate magnetic-conducting ores and non-magnetic-conducting ores;

step four: sorting the non-magnetic ore by adopting a first spiral chute to obtain a first zircon sand concentrate, a first middling and a first tailing; sorting the first middlings by adopting a second spiral chute to obtain second zircon sand concentrate, second middlings and first tailings; sorting the first tailings by using a third spiral chute to obtain a third concentrate and second tailings;

step five: and carrying out table concentration on the slurry obtained after the gravity concentration and slurry preparation of the second middling and the third concentrate by using table concentration equipment to obtain a third zircon sand concentrate, a first rutile concentrate and a third tailing.

Optionally, the feeding device includes a discharging hopper, an electronic belt scale and a conveying belt, and the first step is specifically: the titanium zirconium placer is fed through the blanking hopper, quantitatively blanked through the electronic belt scale and conveyed to the screening equipment by the conveying belt for screening.

Optionally, the third step specifically is: carrying out first wet magnetic separation on the ore pulp prepared after washing to obtain first titanium zirconium tailings and titanium rough concentrate; performing second wet magnetic separation on the titanium rough concentrate to obtain second titanium zirconium tailings and titanium concentrate; the magnetic field intensity of the first magnetic separation is 8000-.

Optionally, the seaside titanium zirconium placer beneficiation method further includes the following steps:

step six: and combining the first zircon concentrate, the second zircon concentrate and the third zircon concentrate, and concentrating and dehydrating to obtain the zircon concentrate.

Optionally, the particle size distribution of the seaside titanium zirconium placer is as follows: the mineral substances which pass through the 40-mesh sieve and do not pass through the 140-mesh sieve account for 65-86% of the total mineral substances by weight, the mineral substances which pass through the 140-mesh sieve and do not pass through the 200-mesh sieve account for 13-34% of the total mineral substances by weight, and the mineral substances of other particles account for less than 1% of the total mineral substances by weight.

In the beneficiation system and the beneficiation method for the seaside titanium zirconium placer, provided by the embodiment of the invention, the large gangue, weeds, garbage and other wastes mixed in the seaside titanium zirconium placer are removed through the screening equipment, and the sludge adhered to the surface of the ore grains is scrubbed through the ore washing equipment, so that the valuable mineral selectivity of the downstream process is improved. Furthermore, according to the content composition of valuable minerals of the seaside titanium zirconium placer, magnetic substances with high content are firstly selected, then rough zircon sand concentrate, middlings and tailings are separated through a concentrate spiral chute with high yield and without power, and the middlings and the tailings are further subjected to spiral chute separation to remove a large amount of quartz tailings. Through wet magnetic separation, spiral chute and table concentrator, valuable ore with high ore dressing content and easy selection is first separated, and a large amount of gangue minerals such as quartz with light specific gravity are removed, so that the effects of improving production efficiency, saving ore dressing cost, reducing equipment loading capacity, improving ore dressing processing capacity and facilitating large-scale continuous ore dressing operation are achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic block diagram of a seaside titanium zirconium placer beneficiation system according to an embodiment of the present invention.

Fig. 2 is a schematic flow chart of a beneficiation method for seaside titanium zirconium placer provided by the embodiment of the invention.

Fig. 3 is a schematic flow chart of a specific process of the beneficiation method of the seaside titanium zirconium placer in fig. 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a seaside titanium zirconium placer beneficiation system 100, which includes a feeding device 110, a screening device 120, an ore washing device 130, a wet magnetic separation device 140, a spiral chute device 150, and a shaking table device 160, which are sequentially arranged.

The feed device 110 is used to convey the zircaloy ore to the screening device 120. Specifically, the feeding device 110 includes a lower hopper 111, an adjustable-speed electronic belt scale 112, and a conveying belt 113. The blanking hopper 111 is used for bearing the raw material of the titanium zirconium placer. The speed-adjustable electronic belt scale 112 is used for weighing the raw material of the titanium zirconium placer. The conveying belt 113 is used for conveying the raw material of the titanium zirconium placer to the screening device 120. After the seaside titanium zirconium placer is fed by the feeding hopper, the seaside titanium zirconium placer is quantitatively fed by the speed-adjustable electronic belt scale 112 and then is fed to the screening equipment 120 by the conveying belt 113 to remove impurities. In this embodiment, the particle size distribution of the zircaloy placer is: the mineral substances which pass through the 40-mesh sieve and do not pass through the 140-mesh sieve account for 65-86% of the total mineral substances by weight, the mineral substances which pass through the 140-mesh sieve and do not pass through the 200-mesh sieve account for 13-34% of the total mineral substances by weight, and the mineral substances of other particles account for less than 1% of the total mineral substances by weight.

According to the requirement, the seaside titanium zirconium placer ore dressing system 100 further comprises a material level alarm device 114. The material level alarm device 114 is arranged on the blanking hopper 111 and is used for generating an alarm signal when the material level is low.

The screening device 120 is used for removing impurities from the titanium zirconium placer. In this embodiment, the screening device 120 includes a trommel 121 and a rocking screen 122. The shaker 122 is disposed between the trommel 121 and the ore washing apparatus 130. The conveying belt 113 conveys the raw material of the zircaloy placer to the drum screen 121. After the titanium zirconium placer is screened by the drum screen 121, coarse-grained ore sand is removed by the swinging screen 122. Undersize of the shaker 122 is conveyed to the ore washing apparatus 130. Specifically, the drum screen 121 is disposed on the upper layer and used for removing garbage such as large gangue, weeds, wood strips and the like. The swing screen 122 is disposed at a lower layer and between the trommel screen 121 and the ore washing device 130, and is used for removing coarse-grained ore sand and supplying material to the ore washing device 130 of a next process.

The ore washing device 130 is configured to wash the titanium-zirconium placer after impurity removal, and configure the washed titanium-zirconium placer and water into ore pulp with a concentration of 30-35% and transmit the ore pulp to the wet magnetic separation device 140. In this embodiment, the ore washing apparatus 130 is a spiral ore washer. After a small part of coarse particles of undersize of the drum screen 121 are removed by the swing screen 122, fine particles fall to a lower spiral ore washer to be scrubbed to remove mud. The discharge end of the spiral ore washer is provided with a discharge hopper, and the deslimed titanium-zirconium placer and water are mixed to ore pulp with certain concentration and then are pumped to the wet magnetic separation equipment 140 by a sand pump for magnetic separation.

The wet magnetic separation device 140 is used for performing magnetic separation on the ore pulp to separate magnetic conductive ores and non-magnetic conductive ores. In the present embodiment, wet magnetic separation apparatus 140 is a high gradient wet magnetic separation apparatus, which includes a first wet magnetic separator 141 and a second wet magnetic separator 142. Specifically, the ore pulp is separated by the first wet magnetic separator 141 to obtain magnetized magnetite and ilmenite and non-magnetic ore. The magnetized magnetite and ilmenite are separated by the second wet magnetic separator 142 to obtain high-grade ilmenite concentrate and non-magnetic ore. The obtained titanium concentrate can be sold after concentration and dehydration or subjected to dry magnetic separation after drying. The non-magnetic ore obtained by the first wet magnetic separator 141 and the second wet magnetic separator 142 is pumped to the spiral chute equipment 150 through a uniform mixing and batching device. In this embodiment, the magnetic field strength of the first wet magnetic separator 141 is 8000-9000GS, so as to obtain the nonmagnetic titanium-zirconium tailings with relatively high grade. The magnetic field strength of the second wet magnetic separator 142 is 6000-7000GS, so as to obtain the high-grade titanium concentrate of the upper magnetite.

The spiral trough apparatus 150 includes a first spiral trough 151, a second spiral trough 152, and a third spiral trough 153. The first spiral chute 151 is used for sorting the non-magnetic conductive ore to obtain a first zircon sand concentrate, a first middling and a first tailing. The second spiral chute 152 is used for sorting the first middlings to obtain a second zircon sand concentrate, a second middlings and first tailings. The third spiral chute 153 is used for sorting the first tailings to obtain a third concentrate and second tailings. In this embodiment, the first spiral chute is a concentrate spiral of Φ 1200, the second spiral chute is a concentrate spiral of Φ 900, and the third spiral chute is a concentrate spiral of Φ 600, so as to obtain a large yield and ensure a high useful ore recovery rate.

The table concentrator 160 is configured to perform table concentration after performing gravity concentration and slurry blending on the second middling and the third concentrate to obtain a third zircon sand concentrate, a first rutile concentrate, and a third tailings. In this embodiment, the shaking table is a 6-S titanium zirconium ore concentration shaking table, which has good separation precision, and the obtained useful ore has high grade but relatively low processing capacity, so the shaking table is arranged at the last step of the wet separation process. In this embodiment, the operating parameters of the rocking device 160 are: 11-16mm of stroke, 48-53 times/min of frequency, 1.5-3.5 degrees of transverse slope, 0.92 percent of longitudinal slope and 2-3 tons/day of ore feeding amount. Wherein, the 0.92% of the longitudinal slope represents a 0.92 meter drop per hundred meters. The stroke and the stroke frequency of the shaking table directly determine the moving speed and the acceleration of the bed surface, and the bed surface has enough moving speed and proper positive and negative acceleration in order to separate material components with different properties in the slurry. The movement speed of the bed surface is in direct proportion to the product of the stroke and the stroke frequency, and different movement speeds of the bed surface can be obtained by changing the stroke or the stroke frequency. The cross slope angle and the longitudinal slope angle jointly determine the speed of water flow and the thickness of a water layer, so that the moving speed of ore particles and the size of a cleaning effect are influenced. In this embodiment, the operating parameters of the shaker apparatus 160 are set to: 11-16mm stroke, 48-53 times/min frequency, 1.5-3.5 degree cross slope, 0.92% longitudinal slope and 2-3 tons/day ore feeding amount, and the working parameters can ensure that the layering effect of materials such as the third zircon sand concentrate, the first rutile concentrate and the third tailings is good, thereby enhancing the selective carrying capacity of the shaking table equipment 160.

In the beneficiation system for the seaside titanium zirconium placer provided by the embodiment of the invention, the screening equipment 120 is used for removing the wastes such as large gangue, weeds and garbage mixed in the seaside titanium zirconium placer, and the ore washing equipment 130 is used for scrubbing the sludge adhered to the surface of the ore particles, so that the valuable mineral selectivity of the downstream process is improved. Furthermore, according to the content composition of valuable minerals of the seaside titanium zirconium placer, magnetic substances with high content are firstly selected, then rough zircon sand concentrate, middlings and tailings are separated by a concentrate spiral chute device 150 with high yield and without power, and the middlings and the tailings are further subjected to spiral chute separation to remove a large amount of quartz tailings. Through wet magnetic separation, spiral chute and table concentrator, valuable ore with high ore dressing content and easy selection is first separated, and a large amount of gangue minerals such as quartz with light specific gravity are removed, so that the effects of improving production efficiency, saving ore dressing cost, reducing equipment loading capacity, improving ore dressing processing capacity and facilitating large-scale continuous ore dressing operation are achieved.

Referring to fig. 2 and fig. 3, an embodiment of the present invention further provides a method for beneficiation of a seaside titanium zirconium placer, including the following steps:

the method comprises the following steps: the titanium zirconium placer is conveyed to the screening device 120 by the feeding device 110 for screening. In this embodiment, the feeding device 110 includes a lower hopper 111, an adjustable speed electronic belt scale 112 and a conveying belt 113. At this time, the first step is specifically: the titanium zirconium placer is fed by the feeding hopper 111, is quantitatively fed by the speed-adjustable electronic belt scale 112, and is conveyed to the screening equipment 120 by the conveying belt 113 for screening. In this embodiment, the particle size distribution of the seaside titanium zirconium placer is: the mineral substances which pass through the 40-mesh sieve and do not pass through the 140-mesh sieve account for 65-86% of the total mineral substances by weight, the mineral substances which pass through the 140-mesh sieve and do not pass through the 200-mesh sieve account for 13-34% of the total mineral substances by weight, and the mineral substances of other particles account for less than 1% of the total mineral substances by weight.

Step two: and (3) washing the undersize of the screening device 120 by using an ore washing device 130, and configuring the washed titanium-zirconium placer and water into ore pulp with the concentration of 30-35% and conveying the ore pulp to a wet magnetic separation device 140.

Step three: and carrying out magnetic separation on the ore pulp by adopting the wet magnetic separation equipment 140 so as to separate magnetic conduction ores and non-magnetic conduction ores. Specifically, the method comprises the following steps: carrying out first wet magnetic separation on the ore pulp prepared after washing to obtain first titanium zirconium tailings and titanium rough concentrate; performing second wet magnetic separation on the titanium rough concentrate to obtain second titanium zirconium tailings and titanium concentrate; the magnetic field intensity of the first magnetic separation is 8000-.

Step four: sorting the non-magnetic conductive ore by using a first spiral chute 151 to obtain a first zircon sand concentrate, a first middling and a first tailing; sorting the first middlings by using a second spiral chute 152 to obtain second zircon sand concentrate, second middlings and first tailings; sorting the first tailings by using a third spiral chute 153 to obtain a third concentrate and second tailings;

step five: and performing table concentration on the slurry obtained after gravity concentration and slurry preparation on the second middling and the third concentrate by using table concentrator equipment 160 to obtain third zircon sand concentrate, first rutile concentrate and third tailings.

According to the requirement, the beneficiation method of the seaside titanium zirconium placer further comprises the following steps:

step six: and combining the first zircon concentrate, the second zircon concentrate and the third zircon concentrate, and concentrating and dehydrating to obtain the zircon concentrate.

In the beneficiation method for the seaside titanium zirconium placer provided by the embodiment of the invention, the screening equipment 120 is used for removing the wastes such as large gangue, weeds and garbage mixed in the seaside titanium zirconium placer, and the ore washing equipment 130 is used for scrubbing the sludge adhered to the surface of the ore grains, so that the valuable mineral selectivity of the downstream process is improved. Furthermore, according to the content composition of valuable minerals of the seaside titanium zirconium placer, magnetic substances with high content are firstly selected, then rough zircon sand concentrate, middlings and tailings are separated through a concentrate spiral chute 150 with high yield and without power, and the middlings and the tailings are further subjected to spiral chute separation to remove a large amount of quartz tailings. Through wet magnetic separation, spiral chute and table concentrator, valuable ore with high ore dressing content and easy selection is first separated, and a large amount of gangue minerals such as quartz with light specific gravity are removed, so that the effects of improving production efficiency, saving ore dressing cost, reducing equipment loading capacity, improving ore dressing processing capacity and facilitating large-scale continuous ore dressing operation are achieved.

In order to further explain the beneficiation method of the seaside titanium zirconium placer provided by the embodiment of the invention, a scheme of the invention is explained in a specific embodiment.

The selected raw material in this example was seashore titanium zirconium placer, and the main valuable mineral element analysis thereof is shown in table 1.

TABLE 1 analysis of the main valuable mineral elements of seaside TiZr placer

As can be seen from Table 1, in the seashore titanium zirconium placer, Zr (Hf) O₂The content of (b) is 19.3 mass%; TiO 2₂In an amount of 30.3% by mass, wherein ilmenite TiO₂The content of (A) is 25.8 mass percent, rutile TiO₂The content of (B) is 4.5 mass%. The granularity distribution of the titanium zirconium placer is as follows: the mineral substances which pass through the 40-mesh sieve and do not pass through the 140-mesh sieve account for 65-86% of the total mineral substances by weight, the mineral substances which pass through the 140-mesh sieve and do not pass through the 200-mesh sieve account for 13-34% of the total mineral substances by weight, and the mineral substances of other particles account for less than 1% of the total mineral substances by weight. According to the characteristics of the seaside titanium zirconium placer, the seaside titanium zirconium placer contains mud and fine particles, and the ilmenite contains high content. From the aspects of ore dressing economy, valuable mineral recovery rate, product grade and the like, the method adopts the steps of screening to remove impurities, washing to remove mud, and wettingAnd (3) wet separation process flow of magnetic separation-table reselection.

The raw ore is processed by the following process steps:

the seaside titanium zirconium placer is put into a blanking hopper 111, is quantitatively fed by an adjustable speed electronic belt scale 112, falls to a conveying belt 113, is conveyed and lifted to a drum screen 121 by the conveying belt 113, and after garbage such as large gangue, weeds, wood strips and the like are removed by the drum screen 121, coarse-grained ore sand is screened out by a swinging screen 122.

Step 2: the screen underflow falls to a spiral ore washer below to be scrubbed, overflow water is discharged and precipitated to be recycled, ore sand is lifted to a discharge end through spiral ore washing and falls to a blanking hopper, and ore pulp with the concentration of 30-35% is mixed with water according to a certain proportion and pumped to a high-gradient magnetic separator.

The titanium-zirconium placer is separated by two high-gradient magnetic separation processes, the first magnetic field intensity is 8000-9000GS, and the titanium-zirconium tailings and the titanium rough concentrate of the non-magnetic-conductive ore with higher grade are obtained. And carrying out second magnetic separation on the titanium rough concentrate, wherein the magnetic field intensity is 6000-7000GS, so as to obtain the titanium concentrate of the magnetoconductive ore with higher grade and remove the titanium-zirconium tailings.

The results obtained in the first wet magnetic separation process are shown in table 3; the results obtained in the second wet magnetic separation process are shown in table 4.

TABLE 3 first wet magnetic separation result of seashore titanium zirconium placer

TABLE 4 second wet magnetic separation result of seashore titanium zirconium placer

Pumping the titanium-zirconium tailings obtained by the first magnetic separation process and the second magnetic separation process to a first phi 1200 spiral chute for separation to obtain first zircon concentrate, first middlings and first tailings; and the first middling and the first tailings respectively enter a second phi 900 spiral chute and a third phi 600 spiral chute to respectively obtain second zircon concentrate, second middling, first tailings, third concentrate and second tailings. And combining the first zircon concentrate and the second zircon concentrate, concentrating and dehydrating, combining the second middling and the third concentrate, pumping to a table concentrator for separation, combining the first tailings and the second tailings, and pumping to a tailings storage yard for treatment.

The results of wet separation of the first, second and third spiral chutes are shown in tables 5-7.

TABLE 5 first spiral chute Wet separation results

TABLE 6 second spiral chute Wet separation results

TABLE 7 results of wet dressing with third spiral chute

And (3) carrying out gravity concentration and slurry preparation on the second middling and the third concentrate, and then feeding the second middling and the third concentrate to a table concentrator for separation, and adjusting proper amplitude, frequency and gradient and flushing water to obtain a third zircon concentrate, a first rutile concentrate and third tailings. And combining, concentrating and dehydrating the first zircon concentrate, the second zircon concentrate and the third zircon concentrate. The first rutile concentrate is separately pumped to concentration and dehydration, and the third tailings are pumped to a tailings storage yard for treatment. The results of the wet dressing on the shaker are shown in Table 8.

TABLE 8 results of wet dressing with shaking table

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.