阅读说明：本技术 一种利用氧化铁皮制备磁性材料原料的装置及其使用方法 (Device for preparing magnetic material raw material by using iron scale and using method thereof ) 是由 童晓明 童少斌 于 2021-10-09 设计创作，主要内容包括：本发明公开了一种利用氧化铁皮制备磁性材料原料的装置及其使用方法,涉及一种磁性材料生产加工技术领域,包括粉碎箱、球磨机、提升机、成型机、传送带、烘干机和氧化烧结炉,粉碎箱、球磨机、提升机、成型机、传送带、烘干机和氧化烧结炉依次首尾连接在一起,首先通过粉碎箱和球磨机对氧化铁片进行充分粉碎,粉碎完成的氧化铁片通过提升机导入成型机内,成型后经过烘干机烘干后导入氧化烧结炉内,经预热、氧化、烧结、冷却、出炉,破碎后成为磁性材料原料,充分利用工业生产产生的大量氧化铁皮作为原料,生产成本低,节省了原料加工工序,工艺简单易实现,利用燃气加热辊道窑快速氧化烧结,烧结时间短且生产效率高,大幅降低能耗,产品质量高。(The invention discloses a device for preparing a magnetic material raw material by using iron scales and a using method thereof, and relates to the technical field of magnetic material production and processing, comprising a crushing box, a ball mill, a lifter, a forming machine, a conveyor belt, a dryer and an oxidation sintering furnace, wherein the crushing box, the ball mill, the lifter, the forming machine, the conveyor belt, the dryer and the oxidation sintering furnace are sequentially connected end to end, firstly, iron oxide sheets are fully crushed by the crushing box and the ball mill, the crushed iron oxide sheets are guided into the forming machine by the lifter, are dried by the dryer after being formed, are guided into the oxidation sintering furnace, are preheated, oxidized, sintered, cooled and discharged out of the furnace, are crushed to form the magnetic material raw material, a large amount of iron scales generated in industrial production are fully utilized as the raw material, the production cost is low, the raw material processing procedures are saved, and the process is simple and easy to realize, the gas-fired roller kiln is used for rapid oxidation sintering, the sintering time is short, the production efficiency is high, the energy consumption is greatly reduced, and the product quality is high.)

1. The utility model provides an utilize device of iron scale preparation magnetic material raw materials, includes crushing case (1), ball mill (2), lifting machine (3), make-up machine (4), conveyer belt (5), drying-machine (6) and oxidation sintering stove (7), its characterized in that: the discharge end of the crushing box (1) is provided with a guide pump (12), the output end of the guide pump (12) is provided with a first guide pipe (13), the other end of the first guide pipe (13) is connected with the input end of the ball mill (2), the output end of the ball mill (2) is provided with a second guide pipe (14), the other end of the second guide pipe (14) is connected with the bottom of the elevator (3), the top output end of the elevator (3) is connected with a third guide pipe (15), the third guide pipe (15) is obliquely arranged on the outer wall of the elevator (3), the oblique bottom end of the third guide pipe (15) is connected with the forming machine (4), the output end of the forming machine (4) is connected with a discharge pipe (17), the other end of the discharge pipe (17) is positioned above the end part of the conveyor belt (5), and meanwhile, the middle of the conveyor belt (5) is provided with a dryer (6) and an oxidation sintering furnace (7), wherein the dryer (6) is arranged close to the forming machine (4).

2. The apparatus for preparing magnetic material raw material using iron scale as claimed in claim 1, wherein: be provided with first chemical tank (9) between crushing case (1) and ball mill (2), first chemical tank (9) link together through the input of advancing pencil (20) and ball mill (2), the right side of make-up machine (4) is provided with second chemical tank (11) simultaneously, the other end and make-up machine (4) of second chemical tank (11) link together, and the bottom of make-up machine (4) is provided with water tank (10), water tank (10) link together through water pipe and make-up machine (4), wherein additive has been put in first chemical tank (9) and second chemical tank (11), the additive is the resin curing agent, also can be other organic curing agents.

3. The apparatus for preparing magnetic material raw material using iron scale as claimed in claim 1 or 2, wherein: the inner part of the crushing box (1) is provided with two groups of filtering mechanisms, the filtering mechanisms comprise a screen (22) and an inclined plate (24), the screen (22) is obliquely arranged in the crushing box (1), the oblique top end of the screen (22) is slidably arranged on the inner wall of the crushing box (1), the oblique bottom end of the screen (22) is provided with an opening, the opening is provided with a baffle (23), the baffle (23) is arranged on the inner wall of the crushing box (1), the bottom tower frame of the screen (22) is arranged above the baffle (23), the side wall of the baffle (23) is provided with the inclined plate (24), the inclined plate (24) is arranged on the inner wall of the crushing box (1), the inclined plate (24) is positioned under the screen (22), the oblique directions of the inclined edges (24) are opposite, the two groups of filtering mechanisms are vertically staggered, and the top wall of the crushing box (1) is provided with a feeding valve (21), the feed valve (21) is located directly above the upper filter mechanism, wherein the inclined bottom of the inclined plate (24) is provided with a discharge valve (31).

4. The apparatus for preparing magnetic material raw material using iron scale as claimed in claim 3, wherein: two groups of crushing rollers (26) are arranged below an opening of the filtering mechanism, the crushing rollers (26) are rotatably arranged on the inner wall of the crushing box (1), the crushing rollers (26) are connected with a motor, the motor is arranged on the outer wall of the crushing box (1), a material guide plate (25) is arranged above the crushing rollers (26), the material guide plate (25) and the filtering mechanism below are symmetrically arranged, meanwhile, a filter screen (27) is arranged on the inclination of the crushing rollers (26), the top end of the filter screen (27) is slidably arranged on the inner wall of the crushing box (1), the top end of the filter screen (27) is positioned under the crushing rollers (26), a material storage groove (28) is arranged at the inclined bottom of the filter screen (27), the material storage groove (28) is arranged on the inner wall of the crushing box (1), the top end of the filter screen (27) is erected right above the material storage groove (28), and a circulating pump (29) is arranged on the outer wall of the crushing box (1) corresponding to the material storage groove (28), the input and the stock chest (28) of circulating pump (29) communicate together, the output of circulating pump (29) is connected with circulating pipe (30) simultaneously, the other end of circulating pipe (30) links together with the lateral wall of smashing case (1), the link of circulating pipe (30) and smashing case (1) is located guide plate (25) directly over, and the bottom of smashing case (1) sets into arc, the relief hole has been seted up to the arc bottom, relief hole and guide pump (12) intercommunication are in the same place, screen cloth (22) and filter screen (27) link together through connecting rod (32), the top of connecting rod (32) links together with the output of electromagnetic shaker (33), electromagnetic shaker (33) are installed on the roof of smashing case (1), and connecting rod (32) stretch out from the inside of swash plate (24).

5. The apparatus for preparing magnetic material raw material using iron scale as claimed in claim 1 or 2, wherein: a pair of auxiliary boxes (18) are installed at an inlet and an outlet of the oxidation sintering furnace (7), wherein a guide chute (36) is formed in one side wall, close to the oxidation sintering furnace (7), of each auxiliary box (18), a feed chute (34) is formed in one side wall, far away from the oxidation sintering furnace (7), of each auxiliary box (18), the conveyor belt (5) penetrates through the corresponding feed chute (34) and the corresponding guide chute (36), meanwhile, a sealing plate (35) is installed at the top of each feed chute (34) in a rotating mode through a rotating shaft, an air cylinder (37) is installed on the inner wall of each sealing plate (35) in a rotating mode, the other end of each air cylinder (37) is installed on the inner wall of the corresponding auxiliary box (18) in a rotating mode, a pair of sealing edges (39) is installed on the outer wall of the conveyor belt (5), the materials are prevented from sliding off from the surface of the conveyor belt (5), a plurality of groups of partition plates (40) are installed on the surface of the conveyor belt (5), and the conveyor belt (5) is partitioned into a plurality of independent storage cavities through the partition plates (40), an exhaust fan (38) is installed on the top wall of the interior of the auxiliary box (38), the top of the exhaust fan (38) is communicated with the air guide pipe (19), and the other end of the air guide pipe (19) is communicated with the dryer (6).

6. The apparatus for preparing magnetic material raw material using iron scale as claimed in claim 1 or 2, wherein: the crushing box (1), the ball mill (2), the hoister (3), the forming machine (4), the conveyor belt (5), the dryer (6) and the oxidation sintering furnace (7) are arranged on the top wall of the damping mechanism (8).

7. The apparatus for preparing magnetic material raw material using iron scale as claimed in claim 1 or 2, wherein: the iron scale is primary iron scale, secondary iron scale, tertiary iron scale and red iron scale.

8. The apparatus for preparing magnetic material raw material using iron scale as claimed in claim 1 or 2, wherein: the forming machine (4) is an improved honeycomb briquette forming machine.

9. The use method of the apparatus for preparing magnetic material raw material using iron scale as claimed in claim 1, wherein: the specific operation steps are as follows:

the method comprises the following steps: putting the collected iron oxide scales into a crushing box (1) for impurity removal and primary crushing treatment;

step two: and (3) introducing the crushed iron scale into a ball mill (2) through a material guide pump (12), introducing an additive into the ball mill through a first chemical box (9), fully mixing and stirring, and performing dry ball milling, wherein the weight percentage of the crushed iron scale is 90-95%, and the weight percentage of the additive is 5-10%.

Step three: introducing the mixed powder processed by the ball mill (2) into a forming machine (4), simultaneously adding water and additives into the forming machine (4) by a water tank (10) and a reagent tank II (11), and pressing and forming the mixed powder into a honeycomb briquette-shaped blank;

step four: the green body is sent into a dryer (6) through a conveyor belt (5) to be dried, and then enters an oxidation sintering furnace to be preheated, oxidized, sintered, cooled, discharged and crushed to form the magnetic material raw material.

10. The use method of the apparatus for preparing magnetic material raw material using iron scale according to claim 9, wherein: the sintering process of the oxidation sintering furnace (7) needs 100-150 minutes, a raw material blank formed by pressing is placed on a burning bearing plate, the raw material blank is conveyed into a dryer (6) through a conveyor belt (5) to be dried, the dried blank is conveyed to the oxidation sintering furnace (7), the blank is preheated in the oxidation sintering furnace (7) at the temperature of about 200-300 ℃ for 20-30 minutes, the blank is fully dried and shaped, then the blank is heated to the oxidation temperature of about 600-900 ℃ as soon as possible, the oxidation time is 50-70 minutes, the blank is fully oxidized, the blank sintering is completed at the temperature of 1100-1250 ℃ after the oxidation is completed, the sintering time is 20-30 minutes, the sintering is completed by utilizing air to be rapidly cooled, the cooling process is about 10-20 minutes, the blank is discharged after being cooled, and finally the blank is crushed to form the magnetic material raw material.

Technical Field

The invention relates to the technical field of production and processing of magnetic materials, in particular to a device for preparing a magnetic material raw material by using iron scales and a using method thereof.

Background

The magnetic material is a functional material with magnetic property obtained on the basis of a ceramic material forming process, is one of indispensable important materials for the development of modern technology, and plays an important role in the development of energy, aerospace, metallurgy, computers, automobiles, automatic control, instruments and meters, electronic communication, national defense and other fields. The preparation of raw materials is key to obtain the high-performance magnetic material, different preparation methods have respective advantages and disadvantages for the raw materials of the magnetic material, and how to obtain the high-performance raw material of the magnetic material by the low-cost preparation method is the main direction of the development of the manufacturing process of the magnetic material in the future.

Iron scale (referred to as iron scale) is iron-containing oxide generated on the surface of steel after rolled pieces are rapidly cooled in water in the rolling process of a steel mill, and the iron scale is often formed in large quantity due to the reaction of steel and oxygen in air during steel forging and hot rolling hot processing, so that the iron scale is accumulated, and resources are wasted. If the resources are reasonably utilized, the production cost can be reduced, and the effects of environmental protection and energy conservation can be achieved. The main components of the iron scale are Fe2O3, Fe3O4 and FeO. The iron scale is characterized in that the outermost layer of the iron scale is Fe2O3 and accounts for about 10% of the thickness of the iron scale, the middle layer of the iron scale is Fe3O4 and is about 50%, and the innermost layer of the iron scale is in contact with FeO and is about 40%. The recycling rate of the iron scale is low.

The existing magnetic material raw material is prepared by adding 30% of water into iron scale, carrying out wet ball milling to obtain slurry, and a large amount of energy is consumed for drying the water in the slurry; the raw material sintering adopts a pushed slab kiln, the labor intensity is high, the sintering period is long, the oxidation is insufficient, the production cost is high, the raw material consumption is large, and automatic continuous production cannot be carried out.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a device for preparing a magnetic material raw material by using iron scales and a using method thereof.

In order to achieve the purpose, the invention provides the following technical scheme: including smashing case, ball mill, the lifting machine, the make-up machine, the conveyer belt, drying-machine and oxidation fritting furnace, the guide pump is installed to the discharge end of smashing the case, the passage one is installed to the output of guide pump, the other end of passage one links together with the input of ball mill, wherein the passage two is installed to the output of ball mill, the other end of passage two links together with the bottom of lifting machine, and the top output of lifting machine is connected with the passage three, on the outer wall of lifting machine is installed to the three slopes of passage, the slope bottom of passage three links together with the make-up machine, the output of make-up machine is connected with row material pipe, the other end of row material pipe is located the tip top of conveyer belt, drying-machine and oxidation fritting furnace are installed to the centre of conveyer belt simultaneously, wherein the drying-machine is close to the make-up machine and sets up.

As a further scheme of the invention: the grinding machine is characterized in that a first chemical box is arranged between the grinding box and the ball mill, the first chemical box is connected with the input end of the ball mill through a first chemical inlet pipe, a second chemical box is arranged on the right side of the forming machine, the other end of the second chemical box is connected with the forming machine, a water tank is arranged at the bottom of the forming machine and is connected with the forming machine through a water pipe, additives are stored in the first chemical box and the second chemical box, and the additives are resin curing agents and can also be other organic curing agents.

As a further scheme of the invention: the inside of smashing the case is provided with two sets of filtering mechanism, and filtering mechanism includes screen cloth and swash plate, wherein the screen cloth slope sets up the inside at smashing the case, the slope top slidable mounting of screen cloth is on the inner wall of smashing the case simultaneously, and the slope bottom of screen cloth is provided with the opening, the open-ended is provided with the baffle, baffle installation is on the inner wall of smashing the case, the bottom pylon of screen cloth is in the top of the baffle of screen cloth, install the swash plate on the lateral wall of baffle, the swash plate is installed on the inner wall of smashing the case, wherein the swash plate is located under the screen cloth, the slope opposite direction of hypotenuse, two sets of filtering mechanism crisscross the setting from top to bottom simultaneously, and the feed valve is installed to the roof of smashing the case, the feed valve is located directly over the filtering mechanism of top, wherein the slope bottom of swash plate is provided with row material valve.

As a further scheme of the invention: two groups of crushing rollers are arranged below an opening of the filtering mechanism, the crushing rollers are rotatably arranged on the inner wall of the crushing box and are connected with a motor, the motor is arranged on the outer wall of the crushing box, a guide plate is arranged above the crushing rollers, the guide plate and the filtering mechanism below are symmetrically arranged, meanwhile, a filter screen is arranged on the inclination of the crushing rollers, the top end of the filter screen is slidably arranged on the inner wall of the crushing box, the top end of the filter screen is positioned under the crushing rollers, a storage tank is arranged at the inclined bottom of the filter screen and is arranged on the inner wall of the crushing box, the top end of the filter screen is erected over the storage tank, a circulating pump is arranged on the outer wall of the crushing box corresponding to the storage tank, the input end of the circulating pump is communicated with the storage tank, the output end of the circulating pump is connected with a circulating pipe, and the other end of the circulating pipe is connected with the side wall of the crushing box, the link of circulating pipe and crushing case is located the stock guide directly over to crushing case's bottom sets to convex, and the relief hole has been seted up to the circular arc bottom, and the relief hole communicates with the guide pump together, and screen cloth and filter screen link together through the connecting rod, and the top of connecting rod links together with the output of electromagnetic shaker, and the electromagnetic shaker is installed on the roof of crushing case, and the connecting rod stretches out from the inside of swash plate.

As a further scheme of the invention: a pair of auxiliary boxes are arranged at the inlet and the outlet of the oxidation sintering furnace, wherein a guide chute is arranged on one side wall of each auxiliary box close to the oxidation sintering furnace, and one side wall of the auxiliary box far away from the oxidation sintering furnace is provided with a feed chute, a conveyor belt passes through the feed chute and the guide chute, meanwhile, the top of the feed chute is rotatably provided with a sealing plate through a rotating shaft, the inner wall of the sealing plate is rotatably provided with an air cylinder, the other end of the air cylinder is rotatably arranged on the inner wall of the auxiliary box, and the outer wall of the conveying belt is provided with a pair of sealing edges to avoid the materials from sliding off the surface of the conveying belt, wherein the surface mounting of conveyer belt has the multiunit baffle, separates into a plurality of independent storage cavities through a plurality of baffles with the conveyer belt, installs the air discharge fan on the inside roof of auxiliary tank, and the top and the air duct intercommunication of air discharge fan are in the same place, and the other end and the drying-machine intercommunication of air duct are in the same place.

As a further scheme of the invention: and the crushing box, the ball mill, the hoister, the forming machine, the conveyor belt, the dryer and the oxidation sintering furnace are arranged on the top wall of the damping mechanism.

As a further scheme of the invention: the iron scale is primary iron scale, secondary iron scale, tertiary iron scale and red iron scale.

As a further scheme of the invention: the forming machine is an improved honeycomb briquette forming machine.

As a further scheme of the invention: the sintering process of the oxidation sintering furnace needs 100-150 minutes, a raw material blank formed by pressing is placed on a burning bearing plate, the raw material blank is conveyed into a dryer through a conveyor belt to be dried, the dried blank is conveyed into the oxidation sintering furnace, the blank is preheated for 20-30 minutes at the temperature of about 200-300 ℃ in the oxidation sintering furnace, the moisture of the blank is fully dried and shaped, the blank is heated to the oxidation temperature of about 600-900 ℃ as soon as possible, the oxidation time is 50-70 minutes, the blank is fully oxidized, the sintering of the blank is completed at the temperature of 1100-1250 ℃ after the oxidation is completed, the sintering time is 20-30 minutes, the sintering is completed by utilizing air to be rapidly cooled, the cooling process is about 10-20 minutes, the blank is discharged after being cooled, and finally the blank is crushed to become the magnetic material raw material.

As a still further scheme of the invention: the method for preparing the magnetic material raw material by using the iron scale comprises the following operation steps:

the method comprises the following steps: putting the collected iron scale into a crushing box for impurity removal and primary crushing treatment;

step two: and guiding the crushed iron scale into a ball mill through a material guide pump, guiding an additive into the ball mill through a first reagent box, fully mixing and stirring, and performing dry ball milling, wherein the weight percentage of the crushed iron scale is 90-95%, and the weight percentage of the additive is 5-10%.

Step three: introducing the mixed powder processed by the ball mill into a molding machine, simultaneously adding water and additives into a two-way molding machine of a water tank and a medicament box, and pressing and molding the mixed powder into a honeycomb briquette-shaped blank;

step four: and the green body is sent into a dryer for drying through a conveyor belt, and then enters an oxidation sintering furnace for preheating, oxidation, sintering, cooling, discharging and crushing to obtain the magnetic material raw material.

Due to the adoption of the technical scheme, the invention has the following advantages: the method fully utilizes a large amount of iron oxide scales generated in industrial production as raw materials, has low production cost, saves raw material processing procedures, has simple and easily realized process, utilizes the gas heating roller kiln to carry out rapid oxidation sintering, has short sintering time, high production efficiency and high yield, greatly reduces energy consumption, and has stable product quality.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the internal structure of the crushing box of the present invention.

Fig. 3 is a schematic view of the internal structure of the auxiliary tank of the present invention.

As shown in the figure: 1. the device comprises a crushing box, 2, a ball mill, 3, a lifting machine, 4, a forming machine, 5, a conveying belt, 6, a dryer, 7, an oxidation sintering furnace, 8, a damping bottom plate, 9, a first chemical box, 10, a water tank, 11, a second chemical box, 12, a guide pump, 13, a first guide pipe, 14, a second guide pipe, 15, a third guide pipe, 16, a second chemical inlet pipe, 17, a discharge pipe, 18, an auxiliary box, 19, an air guide pipe, 20, a first chemical inlet pipe, 21, a feed valve, 22, a screen, 23, a baffle, 24, an inclined plate, 25, a guide plate, 26, a crushing roller, 27, a filter screen, 28, a storage tank, 29, a circulating pump, 30, a circulating pipe, 31, a discharge pump, 32, a connecting rod, 33, a vibrator, 34, a feed tank, 35, a sealing plate, 36, a guide tank, 37, a cylinder, 38, an exhaust fan, 39, a sealing edge, 40 and a partition plate.

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.

Referring to fig. 1 to 3, in the embodiment of the present invention, an apparatus for preparing a magnetic material raw material using iron oxide scale includes a pulverizing box 1, a ball mill 2, a lifter 3, a forming machine 4, a conveyor belt 5, a dryer 6, and an oxidation sintering furnace 7, a material guiding pump 12 is installed at a discharge end of the pulverizing box 1, a first material guiding pipe 13 is installed at an output end of the material guiding pump 12, the other end of the first material guiding pipe 13 is connected to an input end of the ball mill 2, a second material guiding pipe 14 is installed at an output end of the ball mill 2, the other end of the second material guiding pipe 14 is connected to a bottom of the lifter 3, a third material guiding pipe 15 is connected to an output end of a top of the lifter 3, the third material guiding pipe 15 is obliquely installed on an outer wall of the lifter 3, an oblique bottom end of the third material guiding pipe 15 is connected to the forming machine 4, an output end of the forming machine 4 is connected to a material discharging pipe 17, and the other end of the material discharging pipe 17 is located above an end of the conveyor belt 5, meanwhile, a dryer 6 and an oxidation sintering furnace 7 are arranged in the middle of the conveyor belt 5, wherein the dryer 6 is arranged close to the forming machine 4; in the processing process, firstly, the iron oxide sheets are fully crushed by the crushing box 1 and the ball mill 2, the crushed iron oxide sheets are guided into the forming machine 4 by the hoister 3, are dried by the dryer 6 after being formed, are guided into the oxidation sintering furnace 7, and are subjected to preheating, oxidation, sintering, cooling and discharging, and are crushed to form the magnetic material raw material.

Specifically, a first chemical box 9 is arranged between the crushing box 1 and the ball mill 2, the first chemical box 9 is connected with the input end of the ball mill 2 through a first chemical inlet pipe 20, a second chemical box 11 is arranged on the right side of the forming machine 4, the other end of the second chemical box 11 is connected with the forming machine 4, a water tank 10 is arranged at the bottom of the forming machine 4, the water tank 10 is connected with the forming machine 4 through a water pipe, and additives are stored in the first chemical box 9 and the second chemical box 11 and can be resin curing agents or other organic curing agents.

Referring to fig. 2, it can be seen that: the inside of the crushing box 1 is provided with two groups of filtering mechanisms, and the filtering mechanisms comprise a screen 22 and an inclined plate 24, wherein the screen 22 is obliquely arranged inside the crushing box 1, the inclined top end of the screen 22 is slidably arranged on the inner wall of the crushing box 1, the inclined bottom end of the screen 22 is provided with an opening, the opening is provided with a baffle 23, the baffle 23 is arranged on the inner wall of the crushing box 1, the bottom tower frame of the screen 22 is arranged above the baffle 23, the side wall of the baffle 23 is provided with the inclined plate 24, the inclined plate 24 is arranged on the inner wall of the crushing box 1, the inclined plate 24 is arranged right below the screen 22, the inclined directions of the inclined edges 24 are opposite, the two groups of filtering mechanisms are arranged in a vertically staggered manner, the top wall of the crushing box 1 is provided with a feeding valve 21, the feeding valve 21 is arranged right above the filtering mechanisms, so that iron scales can flow in a snake shape between the two groups of screens 22, and the dust is sufficiently screened and removed, wherein a discharge valve 31 is arranged at the inclined bottom of the inclined plate 24, and the impurities fallen by the screen are discharged through the discharge valve 31.

Specifically, two sets of pulverizing rollers 26 are disposed below the opening of the filtering mechanism, the pulverizing rollers 26 are rotatably mounted on the inner wall of the pulverizing box 1, and the pulverizing rollers 26 are connected together with a motor (not shown in the figure) mounted on the outer wall of the pulverizing box 1, wherein a material guide plate 25 is disposed above the pulverizing rollers 26, the material guide plate 25 and the filtering mechanism below are symmetrically disposed, the screened oxidation sintering furnace is fully guided into the pulverizing rollers 26 through the material guide plate 25 for pulverizing, meanwhile, a filter screen 27 is disposed on the oblique surface of the pulverizing rollers 26, the top end of the filter screen 27 is slidably mounted on the inner wall of the pulverizing box 1, wherein the top end of the filter screen 27 is disposed right below the pulverizing rollers 26, a material storage tank 28 is disposed at the oblique bottom of the filter screen 27, the material storage tank 28 is mounted on the inner wall of the pulverizing box 1, the top end of the filter screen 27 is erected right above the material storage tank 28, and a circulating pump 29 is mounted on the outer wall of the pulverizing box 1 corresponding to the material storage tank 28, the input end of the circulating pump 29 is communicated with the material storage tank 28, the output end of the circulating pump 29 is connected with a circulating pipe 30, the other end of the circulating pipe 30 is connected with the side wall of the crushing box 1, and the connecting end of the circulating pipe 30 and the crushing box 1 is positioned right above the material guide plate 25; screening is carried out to the oxidation sintering furnace who smashes the completion through filter screen 27, the leading-in bottom of smashing case 1 of the qualified material of screening, and the bottom of smashing case 1 sets into arc, the relief hole has been seted up to the arc bottom, relief hole and guide pump 12 communicate together, smash unqualified material to falling into the stock chest 28 in, circulating pump 29 will smash unqualified material and pass through circulating pump 30 top of leading-in crushing roller 26 again, smash again, thereby the sufficiency has been guaranteed to smash.

Preferably, the screen 22 and the filter screen 27 are connected together by a connecting rod 32, the top end of the connecting rod 32 is connected with the output end of a vibrator 33, the vibrator 33 is installed on the top wall of the pulverizing box 1, and the connecting rod 32 extends out from the inside of the inclined plate 24, so that the screen 22 and the filter screen 27 are driven to vibrate by the vibrator 33, and the filtering effect on the iron oxide scale is better.

Referring to fig. 3, it can be seen that: a pair of auxiliary boxes 18 are installed at an inlet and an outlet of the oxidation sintering furnace 7, wherein a guide chute 36 is formed in one side wall, close to the oxidation sintering furnace 7, of each auxiliary box 18, a feed chute 34 is formed in one side wall, far away from the oxidation sintering furnace 7, of each auxiliary box 18, the conveyor belt 5 penetrates through the feed chutes 34 and the guide chutes 36, a sealing plate 35 is rotatably installed at the top of each feed chute 34 through a rotating shaft, an air cylinder 37 is rotatably installed on the inner wall of each sealing plate 35, the other end of each air cylinder 37 is rotatably installed on the inner wall of the auxiliary box 18, a pair of sealing edges 39 are installed on the outer wall of the conveyor belt 5, and therefore the materials are prevented from sliding off from the surface of the conveyor belt 5, a plurality of groups of partition plates 40 are installed on the surface of the conveyor belt 5, and the conveyor belt 5 is partitioned into a plurality of independent storage cavities through the partition plates 40; in the sintering process, convey the storage cavity to oxidation sintering stove 7 in, baffle 40 is located feed chute 34 this moment, opens cylinder 37 and drives sealing plate 35 and remove to vertical state, and sealing plate 35 and baffle 40 contact are in the same place, accomplish the sealed of oxidation sintering stove 7, avoid thermal loss.

Specifically, install exhaust fan 38 on the inside roof of auxiliary tank 38, exhaust fan 38's top and air duct 19 communicate together, and air duct 19's the other end and drying-machine 6 communicate together to utilize in leading-in drying-machine 6 of waste heat that produces oxidation sintering furnace 7, reduced thermal waste, environmental protection and energy saving more.

Preferably, the iron scale is primary iron scale, secondary iron scale, tertiary iron scale and red iron scale.

Preferably, the forming machine 4 is a modified honeycomb briquette forming machine.

Preferably, the sintering process of the oxidation sintering furnace 7 needs about 100-150 minutes, the raw material blank formed by pressing is placed on a burning bearing plate, the raw material blank is conveyed into a dryer 6 through a conveyor belt 5 to be dried, the dried blank is conveyed to the oxidation sintering furnace 7, the blank is preheated in the oxidation sintering furnace 7 at the temperature of about 200-300 ℃ for 20-30 minutes, the blank is fully dried and shaped, then the blank is heated to the oxidation temperature of about 600-900 ℃ as soon as possible, the oxidation time is 50-70 minutes, the blank is fully oxidized, the blank sintering is completed at the temperature of 1100-1250 ℃ after the oxidation is completed, the sintering time is 20-30 minutes, the sintering is completed by utilizing air to be rapidly cooled, the cooling process is about 10-20 minutes, the blank is taken out of the furnace after being cooled, and finally the blank is crushed to become the magnetic material raw material.

Preferably, the crushing box 1, the ball mill 2, the hoister 3, the forming machine 4, the conveyor belt 5, the dryer 6 and the oxidation sintering furnace 7 are arranged on the top wall of the damping mechanism 8, so that the working stability of the device is improved.

According to the above preferred embodiment provided by the present invention, the working steps of the present invention are as follows:

the method comprises the following steps: putting the collected iron oxide scales into a crushing box 1 for impurity removal and primary crushing treatment;

step two: and (2) introducing the crushed iron scale into a ball mill 2 through a material guide pump 12, introducing an additive into the ball mill through a first chemical box 9, fully mixing and stirring, and performing dry ball milling, wherein the weight percentage of the crushed iron scale is 90-95%, and the weight percentage of the additive is 5-10%.

Step three: introducing the mixed powder processed by the ball mill 2 into a forming machine 4, simultaneously adding water and additives into the forming machine 4 through a water tank 10 and a chemical tank II 11, and pressing and forming the mixed powder into a honeycomb briquette-shaped blank;

step four: and the green body is sent into a dryer 6 through a conveyor belt 5 to be dried, and then is sent into an oxidation sintering furnace to be preheated, oxidized, sintered, cooled, discharged and crushed to form the magnetic material raw material.