阅读说明：本技术 高效炼金工艺 (High-efficiency gold smelting process ) 是由 曹海宙 万孟 施佐帆 于 2020-12-30 设计创作，主要内容包括：本发明公开了一种高效炼金工艺,包括如下步骤将矿石放入粉碎装置中,对矿石进行粉碎处理；进行高温加温,去除矿石颗粒中的硫化物；进行磁选,分离出铁精粉；进行金浸出,获取浸出物；进行逆流洗涤,获取上清液；进行炭吸附回收金；载金炭进行高温焚烧,通过金银冶炼工序后获取金银锭；向金银锭中加入王水,直至王水完全浸没金银锭,至溶金反应结束；溶液滴加乙醇,至反应结束；液体冷凝至室温；液体过滤,将滤渣去除；过滤后的液体通入还原性气体,将溶液中的金离子还原,得到金沉淀。本发明通过粉碎装置保证矿石粉碎完全,通过炭吸附形式回收金,并通过王水进一步提纯金,将银与金分离,保证炼金纯度。(The invention discloses an efficient gold smelting process, which comprises the following steps of putting ores into a crushing device, and crushing the ores; heating at high temperature to remove sulfide in the ore particles; carrying out magnetic separation to separate iron concentrate powder; performing gold leaching to obtain a leachate; performing countercurrent washing to obtain supernatant; carrying out carbon adsorption to recover gold; carrying out high-temperature incineration on the gold-carrying carbon, and obtaining gold and silver ingots after a gold and silver smelting process; adding aqua regia into the gold and silver ingots until the aqua regia completely submerges the gold and silver ingots until the gold dissolving reaction is finished; dropwise adding ethanol into the solution until the reaction is finished; the liquid is condensed to room temperature; filtering the liquid, and removing filter residues; and introducing reducing gas into the filtered liquid to reduce the gold ions in the solution to obtain gold precipitate. The invention ensures the complete crushing of the ore by the crushing device, recovers the gold by the form of carbon adsorption, further purifies the gold by the aqua regia, separates the silver from the gold and ensures the purity of the gold smelting.)

1. An efficient gold smelting process is characterized by comprising the following steps:

s1: putting the ore into a crushing device, and crushing the ore to obtain completely crushed ore particles;

s2: adding the ore particles obtained in the step S1 into a high-temperature combustion furnace, and heating at high temperature to remove sulfides in the ore particles;

s3: carrying out magnetic separation on the ore particles with the sulfide removed in the step S2, and separating out iron concentrate powder;

s4: sending the ore particles into a sedimentation tank for standing and sedimentation to obtain sediment;

s5: adding the precipitate into a high-pressure reactor for gold leaching to obtain a leachate;

s6: performing countercurrent washing on the extract to obtain a supernatant;

s7: sending the supernatant into a noble liquid pool, and sending the noble liquid in the noble liquid pool into a head pool for carbon adsorption to recover gold;

s8: carrying out high-temperature incineration on the gold-loaded carbon adsorbed with gold, and obtaining a gold and silver ingot after a gold and silver smelting process;

s9: adding aqua regia into the gold and silver ingots until the aqua regia completely submerges the gold and silver ingots until the gold dissolving reaction is finished;

s10: continuously dropwise adding ethanol into the solution obtained in the step S9 until the reaction is finished;

s11: condensing the liquid in step S10 to room temperature;

s12: filtering the liquid in the step S11, and removing filter residues;

s13: and (5) introducing reducing gas into the liquid filtered in the step (S12), reducing the gold ions in the solution to obtain a gold precipitate, and washing the surface of the gold precipitate to obtain high-purity gold.

2. A high efficiency gold smelting process according to claim 1, wherein: the reducing gas in step S13 is sulfur dioxide gas.

3. A high efficiency gold smelting process according to claim 1, wherein: and the washing mode of the gold precipitate in the step S13 is to carry out acid washing to further remove impurities, and add water to wash the gold precipitate to be neutral so as to obtain high-purity gold.

4. A high efficiency gold smelting process according to claim 1, wherein: the smashing device comprises a shell, an upper cover, a feed opening and a pair roller assembly with adjustable clearance, wherein the feed opening is formed in the upper end of the shell, the upper cover is detachably mounted at the upper end of the feed opening, the feed opening is formed in the lower end of the shell, and the pair roller assembly is mounted between the feed opening and the feed opening.

5. A high efficiency gold smelting process according to claim 4, wherein: the pair roller component comprises a driving wheel connected with a rotating motor, a fixed roller driving wheel, a regulating wheel, a displacement roller driving wheel, a fixed roller and a displacement roller, the fixed roller and the displacement roller are horizontally arranged, the fixed roller and the displacement roller are both arranged in the shell, the fixed roller and the shell are rotatably arranged, the fixed roller driving wheel is arranged at the position outside the shell corresponding to the fixed roller, the fixed roller driving wheel is in transmission connection with the fixed roller, the shell is provided with a chute at one side of the fixed roller driving wheel close to the displacement roller, a slide block is slidably arranged in the chute, one side of the slide block far away from the fixed roller driving wheel is connected with a second air cylinder, the displacement roller and the slide block are rotatably arranged, the displacement roller driving wheel is in transmission connection with the displacement roller, the driving wheel is rotatably arranged at one side of the fixed roller driving wheel far away from the displacement roller, the adjusting wheel is arranged between the fixed roller driving wheel and the displacement roller driving wheel, the adjusting wheel is connected with the shell through the lifting assembly, and the driving wheel, the fixed roller driving wheel, the adjusting wheel and the displacement roller driving wheel are connected through a driving belt.

6. A high efficiency gold smelting process according to claim 5, wherein: the lifting assembly comprises an installation block and a first air cylinder, the installation block is fixedly installed on the shell, and the adjusting wheel is connected with the installation block through the first air cylinder.

7. A high efficiency gold smelting process according to claim 5, wherein: and horizontal wheels which enable the transmission belts at two sides to be kept horizontal are arranged at two sides of the adjusting wheel.

8. A high efficiency gold smelting process according to claim 4, wherein: a filter screen is arranged below the pair roller component, and the filter screen and the shell are detachably mounted.

Technical Field

The invention relates to the technical field of gold smelting, in particular to an efficient gold smelting process.

Background

Gold is the elemental form of the chemical element gold, a soft, golden yellow, corrosion resistant precious metal. Gold is one of the more rare, precious and highly appreciated metals. Gold is a very important metal in ounces in general in the world and in "two" in ancient China. The existing gold extraction mainly comprises electrolytic refining and extraction methods, but because electrolytic refining needs to be carried out for many times, the energy consumption is high, the efficiency is low, the extraction method usually needs to carry out extraction for many times, the pollution is large, the labor intensity is high, the production period is long, the cost is high, and high-purity gold is difficult to obtain by the traditional chemical reduction method.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide an efficient gold refining process, which improves the gold extraction efficiency and obtains high-purity gold.

The efficient gold smelting process comprises the following steps:

s1: putting the ore into a crushing device, and crushing the ore to obtain completely crushed ore particles;

s2: adding the ore particles obtained in the step S1 into a high-temperature combustion furnace, and heating at high temperature to remove sulfides in the ore particles;

s3: carrying out magnetic separation on the ore particles with the sulfide removed in the step S2, and separating out iron concentrate powder;

s4: sending the ore particles into a sedimentation tank for standing and sedimentation to obtain sediment;

s5: adding the precipitate into a high-pressure reactor for gold leaching to obtain a leachate;

s6: performing countercurrent washing on the extract to obtain a supernatant;

s7: sending the supernatant into a noble liquid pool, and sending the noble liquid in the noble liquid pool into a head pool for carbon adsorption to recover gold;

s8: carrying out high-temperature incineration on the gold-loaded carbon adsorbed with gold, and obtaining a gold and silver ingot after a gold and silver smelting process;

s9: adding aqua regia into the gold and silver ingots until the aqua regia completely submerges the gold and silver ingots until the gold dissolving reaction is finished;

s10: continuously dropwise adding ethanol into the solution obtained in the step S9 until the reaction is finished;

s11: condensing the liquid in step S10 to room temperature;

s12: filtering the liquid in the step S11, and removing filter residues;

s13: and (5) introducing reducing gas into the liquid filtered in the step (S12), reducing the gold ions in the solution to obtain a gold precipitate, and washing the surface of the gold precipitate to obtain high-purity gold.

Preferably, the reducing gas in step S13 is sulfur dioxide gas.

Preferably, the gold precipitate is washed in step S13 by acid washing to further remove impurities, and then washed with water to neutrality to obtain high-purity gold.

Preferably, the crushing device in step S1 includes a housing, an upper cover, a feed opening, and a pair roller assembly with adjustable gap, wherein the feed opening is provided at the upper end of the housing, the upper cover is detachably mounted at the upper end of the feed opening, the feed opening is provided at the lower end of the housing, and the pair roller assembly is mounted between the feed opening and the feed opening.

Preferably, the pair roller assembly comprises a driving wheel connected with a rotating motor, a fixed roller driving wheel, a regulating wheel, a displacement roller driving wheel, a fixed roller and a displacement roller, the fixed roller and the displacement roller are horizontally arranged, the fixed roller and the displacement roller are both arranged in the shell, the fixed roller and the shell are rotatably arranged, the fixed roller driving wheel is arranged at the position outside the shell corresponding to the fixed roller, the fixed roller driving wheel is in transmission connection with the fixed roller, one side of the shell, which is positioned at the fixed roller driving wheel and close to the displacement roller, is provided with a chute, a sliding block is slidably arranged in the chute, one side of the sliding block, which is far away from the fixed roller driving wheel, is connected with a second cylinder, the displacement roller and the sliding block are rotatably arranged, and the displacement roller driving wheel is in transmission connection with the displacement roller, the movable roller is characterized in that the driving wheel is rotatably arranged on one side, away from the displacement roller, of the fixed roller driving wheel, the adjusting wheel is arranged between the fixed roller driving wheel and the displacement roller driving wheel, the adjusting wheel is connected with the shell through the lifting assembly, and the driving wheel, the fixed roller driving wheel, the adjusting wheel and the displacement roller driving wheel are connected through a driving belt.

Preferably, the lifting assembly comprises an installation block and a first air cylinder, the installation block is fixedly installed on the shell, and the adjusting wheel is connected with the installation block through the first air cylinder.

Preferably, horizontal wheels are arranged on two sides of the adjusting wheel to enable the transmission belts on two sides to be kept horizontal.

Preferably, a filter screen is arranged below the pair roller assembly, and the filter screen and the shell are detachably mounted.

According to the invention, the ore is crushed by the crushing device, the gap between the pair rollers is adjustable, the crushing requirements of a group of crushing devices in multiple stages can be met, the purposes of one machine with multiple purposes and production cost saving are realized, sulfides in ore particles are removed at high temperature, iron fine powder is separated by magnetic separation, gold is leached to obtain leachate, the leachate is subjected to countercurrent washing to obtain supernatant, the supernatant is sent into a precious liquid pool, the precious liquid in the precious liquid pool is sent into an elevated pool to be subjected to carbon adsorption to recover gold, gold and silver ingots are obtained by high-temperature incineration, gold is further purified by aqua regia, silver and gold are separated, and the gold refining purity is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a pulverizing apparatus according to the present invention;

fig. 2 is a sectional view of a pulverizing apparatus according to the present invention.

In the figure: 1-shell, 2-upper cover, 3-feed opening, 4-driving wheel, 5-fixed roller driving wheel, 6-driving belt, 7-mounting block, 8-first cylinder, 9-regulating wheel, 10-horizontal wheel, 11-slide block, 12-second cylinder, 13-displacement roller driving wheel, 14-chute, 15-filter screen, 16-fixed roller and 17-displacement roller.

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.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

An efficient gold smelting process comprises the following steps:

s1: putting the ore into a crushing device, and crushing the ore to obtain completely crushed ore particles;

s2: adding the ore particles obtained in the step S1 into a high-temperature combustion furnace, and heating at high temperature to remove sulfides in the ore particles;

s3: carrying out magnetic separation on the ore particles with the sulfide removed in the step S2, and separating out iron concentrate powder;

s4: sending the ore particles into a sedimentation tank for standing and sedimentation to obtain sediment;

s5: adding the precipitate into a high-pressure reactor for gold leaching to obtain a leachate;

s6: performing countercurrent washing on the extract to obtain a supernatant;

s7: sending the supernatant into a noble liquid pool, and sending the noble liquid in the noble liquid pool into a head pool for carbon adsorption to recover gold;

s8: carrying out high-temperature incineration on the gold-loaded carbon adsorbed with gold, and obtaining a gold and silver ingot after a gold and silver smelting process;

s9: adding aqua regia into the gold and silver ingots until the aqua regia completely submerges the gold and silver ingots until the gold dissolving reaction is finished;

s10: continuously dropwise adding ethanol into the solution obtained in the step S9 until the reaction is finished;

s11: condensing the liquid in step S10 to room temperature;

s12: filtering the liquid in the step S11, and removing filter residues;

s13: and (5) introducing reducing gas into the liquid filtered in the step (S12), reducing the gold ions in the solution to obtain a gold precipitate, and washing the surface of the gold precipitate to obtain high-purity gold.

As shown in fig. 1 and 2, the crushing device in step S1 includes a housing 1, an upper cover 2, a feed opening 3, and a pair roller assembly with adjustable gap, wherein the upper end of the housing 1 is provided with a feed opening, the upper cover 2 is detachably mounted at the upper end of the feed opening, the feed opening 3 is arranged at the lower end of the housing 1, and the pair roller assembly is mounted between the feed opening and the feed opening 3; the pair roller component comprises a driving wheel 4 connected with a rotating motor, a fixed roller driving wheel 5, a regulating wheel 9, a displacement roller driving wheel 13, a fixed roller 16 and a displacement roller 17, wherein the fixed roller 16 and the displacement roller 17 are horizontally arranged, the fixed roller 16 and the displacement roller 17 are both arranged in the shell 1, the fixed roller 16 and the shell 1 are rotatably arranged, the fixed roller driving wheel 5 is arranged at the position, corresponding to the fixed roller 16, outside the shell 1, the fixed roller driving wheel 5 is in transmission connection with the fixed roller 16, one side, close to the displacement roller 17, of the shell 1 is provided with a sliding chute 14, a sliding block 11 is slidably arranged in the sliding chute 14, one side, far away from the fixed roller driving wheel 5, of the sliding block 11 is connected with a second air cylinder 12, the displacement roller 17 and the sliding block 11 are rotatably arranged, the displacement roller driving wheel 13 is in transmission connection with the displacement roller 17, the adjusting wheel 9 is arranged between the fixed roller driving wheel 5 and the displacement roller driving wheel 13, the adjusting wheel 9 is connected with the shell 1 through the lifting assembly, and the driving wheel 4, the fixed roller driving wheel 5, the adjusting wheel 9 and the displacement roller driving wheel 13 are connected through the driving belt 6; the lifting assembly comprises an installation block 7 and a first air cylinder 8, the installation block 7 is fixedly installed with the shell 1, and an adjusting wheel 9 is connected with the installation block 7 through the first air cylinder 8; horizontal wheels 10 which enable the transmission belts at the two sides to be kept horizontal are arranged at the two sides of the adjusting wheel 9; a filter screen 15 is arranged below the roller pair component, and the filter screen 15 and the shell 1 are detachably installed.

In conclusion, the efficient gold smelting process crushes ores through the crushing device, the gap between the rollers is adjustable, the crushing requirements of a group of crushing devices in multiple stages can be met, the multifunctional gold smelting process is multipurpose, the production cost is saved, sulfides in ore particles are removed through high temperature, fine iron powder is separated through magnetic separation, gold is leached, leached objects are obtained, the leached objects are washed in a countercurrent mode, supernatant is obtained, the supernatant is sent into the precious liquid pool, precious liquid in the precious liquid pool is sent into the high-level pool to be subjected to carbon adsorption to recover gold, gold and silver ingots are obtained through high-temperature incineration, gold is further purified through aqua regia, silver is separated from gold, and the gold smelting purity is guaranteed.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.