CN106834715B - A kind of method of comprehensive utilization of arsenic-containing material - Google Patents
A kind of method of comprehensive utilization of arsenic-containing material Download PDFInfo
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- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
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Abstract
Include reducing arsenic from the production of the valuable metals such as smelting smoke dust comprehensively reclaiming arsenic, antimony, lead, bismuth containing arsenic antimony lead and being accumulated in system and keep its innoxious the present invention relates to a kind of method of comprehensive utilization of arsenic-containing material.Method provided by the invention is soaked by normal pressure alkali, removes solvable arsenic in flue dust, and leached mud is washed, reduction melting, aoxidizes the processes such as blowing, and each valuable element is made to be recycled utilization.The method removes arsenic from flue dust, and arsenic is made to enter in leachate, and by way of cleaning to purification of leaching liquor, the impurity such as antimony, lead, tin are precipitated with precipitation form.And liquid is purified for solution of zinc sulfate arsenic in zinc hydrometallurgy after purifying, purification slag send lead to smelt, to realize the separation of arsenic and valuable metal and innoxious.Comprehensive resource utilization rate of the present invention is high, and raw material wide adaptation range solves the cigarette ash generated in pollution problem in traditional handicraft extraction process, especially Lead-Zinc Sintering Process, and the advantage of this method is more obvious.
Description
Technical field
The invention belongs to metallurgical technology fields, and in particular to a kind of method of comprehensive utilization of arsenic-containing material.
Background technology
In nature, arsenic is usually with mispickel (FeAsS), arsenic magnetic iron ore (FeAsS2), symplesite (FeAs2), sulphur arsenical copper
Mine (Cu3AsS3), realgar (As2S3), orpiment (As2S3) etc. mineral, be enriched in the non-ferrous metals such as copper, lead, zinc, nickel, cobalt, gold and silver
In ore；In Nonferrous Metallurgical Process, many high arsenic solid materials of output, such as roasting and melting flue dust.These materials are high containing arsenic
Up to 5~50%, also contain a large amount of valuable metal, directly returns and smelt flow, lead to the circulative accumulation of arsenic in systems, because
This, usually should individually handle dearsenification.Arsenic belongs to severe toxicity, carcinogenic elements, applies gradually atrophy, in face of increasingly stringent environmental protection mark
How standard handles various high-arsenic materials, it has also become threatens the significant problem of nonferrous metallurgy industry existence.
The method of processing arsenic-containing smoke dust is mainly two classes at present, when fire concentrate, second is that wet separation.Pyrogenic process produces
In, the difference of the oxide and other elements oxide boiling point of arsenic is mainly utilized, arsenic is made to be detached with other elements.
CN103602835A discloses a kind of displacement reduction method and obtains crude arsenic and needle antimony, and CN103602834A discloses a kind of selective oxygen
Change-reduction obtains the not high As of purity2O3And needle antimony, CN104294053A disclose a kind of side of arsenic-containing smoke dust reduction volatilization arsenic
Method obtains arsenic trioxide purity and reaches 97.0% or more.But if contain the metal close with arsenic element property in flue dust
(such as antimony), then the arsenic trioxide purity obtained is not high.Mainly there are water logging, acidleach, alkali to soak three kinds of techniques in wet production, still
The products such as the not high arsenic trioxide of purity, natrium arsenicum can only be obtained, and the recycling of valuable metal powder is not made further research.
CN105567983A discloses a kind for the treatment of process of Copper making flue dust water logging-alkali leaching, so that arsenic is detached with metal, the arsenic production of preparation
Product are at a discount, still higher containing arsenic in leached mud.CN104357668A discloses a kind of waste acid leaching flue dust, electrodeposition dearsenification, acid
Leaching and electrolytic deposition process easy to produce arsenic hydride.CN105648226A and CN105648227A discloses a kind of oxygen pressure alkali leaching realization arsenic
The method of antimony separation, more thoroughly, but the natrium arsenicum obtained in process is untreated, the valuable gold such as tellurium, antimony for the ratio of arsenic antimony separation
Belong to unrecovered.
There are many dearsenification, the research paper for extracting valuable metal and related patents report from flue dust, but there are valuable elements
Comprehensive recovery is low, and arsenic product market is limited, and there are potential security risks.Therefore, the prior art could be improved and develop.
Invention content
In order to solve the problems, such as arsenic-containing smoke dust dearsenification and containing comprehensively recovering valuable metal, the present invention proposes a kind of arsenic-containing material
Method of comprehensive utilization, be suitable for nonferrous metallurgical process generate flue dust processing.Arsenic-containing smoke dust dearsenification may be implemented and have
Valence element comprehensive reutilization.The present invention has the advantages that environmentally friendly, economical, energy saving, resource utilization is high, realizes the harmless of arsenic
Change.
The scheme of the invention is the Leaching way soaked by normal pressure alkali, removes solvable arsenic in flue dust, leached mud is through fluidization
The processes such as washing, reduction melting, oxidation blowing, make each valuable element be recycled utilization.The method removes arsenic from flue dust,
Arsenic is set to enter in leachate, by way of cleaning to purification of leaching liquor, in antimony, lead, tin contamination precipitation to purification slag.And it purifies
Liquid is purified for solution of zinc sulfate arsenic in zinc hydrometallurgy afterwards, to realize the separation of arsenic and valuable metal and innoxious.This hair
Bright comprehensive resource utilization rate is high, and raw material wide adaptation range solves pollution problem in traditional handicraft extraction process, especially lead zinc
The cigarette ash that smelting process generates, the advantage of this method are more obvious.
A kind of method of comprehensive utilization of arsenic-containing material of the present invention, includes the following steps:
(1) normal pressure alkali soaks
Extraction temperature is room temperature~100 DEG C, the time is 30~240min, liquid solid product mass ratio be 3:1~20:1
(ml:G) under conditions of, NaOH concentration is 0.1mol/L~6mol/L, mixing speed is 50~1000r/min to arsenic-containing smoke dust into
Row normal pressure alkali leaching process；Filter to obtain leachate and leached mud；The liquid solid product mass ratio refers to the NaOH solution in terms of ml/g
With the volume mass ratio of arsenic-containing smoke dust；
(2) leachate selective reduction purifies
SO is added into leachate obtained by step (1)2Or sulfurous acid reduction, so that Pb is entered purification slag, solution after purification
PH value is 0.5~6.5；Pure sodium arsenite solution is obtained after solid-liquor separation；
(3) leached mud washs
Leached mud obtained by step (1) is used into fluidization wash, the solvable arsenic in leached mud is down to 0.1% or less；
Washing lotion, which can be returned, leaches i.e. return to step (1) for alkaline leaching feed liquid used；
(4) washery slag recycles valuable metal
Will supplying charcoal, coal and appropriate soda ash after washery slag drying obtained by step (3), in reactor in 900~1200 DEG C,
Have and carry out reduction melting under C, CO conditioning, melting generates bubble slag, lead-antimony alloy and flue dust；It is molten that the flue dust is returned into reduction
Refining or normal pressure alkali soak step；Lead is sent to smelt the bubble slag；
The lead-antimony alloy is subjected to oxidation blowing, air (temperature preferably 650~800 is passed through under conditions of muffle
DEG C), obtain antimony vapour, blowing slag and lead bullion；The antimony vapour is aoxidized and generates antimony oxide, as stibium trioxide product；By institute
It states blowing slag and returns to reduction melting process；Lead is sent to refine the lead bullion.
The big calorimetric generated using antimony oxidation maintains antimony liquid temperature in the necessary temperature of reactor and stove；Due to melt body surface
The concentration of metallic antimony has comparative advantage, and metallic antimony property is more active than lead, bismuth, so that the antimony in aluminium alloy is oxidized to antimony oxide and waves
Hair enters flue dust, and lead, bismuth then stay in the lead of reactor bottom, realizes that a stove is dual-purpose.
Arsenic-containing smoke dust (arsenic-containing material) of the present invention includes following main component by percentage to the quality:Arsenic:1%~
60%, antimony:1%~55%, lead:0.1%~35%, zinc:0.1%~30%, copper:0.1%~5%, tellurium:0.01%~3%,
Selenium:0.01%~3%.
The method of comprehensive utilization of the above-mentioned arsenic-containing material of the present invention, wherein
It is that normal pressure alkali soaks to be leached described in step (1), and control alkali concentration is 0.1mol/L~6mol/L, and extraction temperature is room
Temperature~100 DEG C, time are 30~240min, liquid solid product mass ratio is 3:1~20:1(ml:G), mixing speed be 50~
1000r/min。
Leachate selective reduction cleaning procedure described in step (2), addition is SO2Or sulfurous acid.
SO in step (2)2In 0.5~5L/min, reaction temperature control is room temperature~90 DEG C, ventilation for gas flow control
(SO2) 0.5~4h of time.
The washing of leached mud described in step (3) is washed using fluidization wash tower.
Reduction melting described in step (4), oxidation blowing reactor used is blast furnace, reverberatory furnace, bottom convertor, side-blown
Stove or top blast stove, preferably reverberatory furnace or bottom convertor.
The advantages of the method for the present invention and good effect:
1, the present invention the solvable arsenic in arsenic flue dust is totally removed, the raw material arsenic after dearsenification by the way of the leaching of normal pressure alkali
Content is low, can the valuable metals such as synthetical recovery antimony, lead, bismuth, reduce the content of arsenic in product；
2, the present invention using normal pressure alkali leaching by the way of, economic cost is low, and operability is strong, and technological process is simple and practicable,
Most arsenic is set to enter leachate, and the valuable metals such as antimony, lead, bismuth are enriched in leached mud, to realize arsenic-containing smoke dust
Recycling and innoxious, the cigarette ash that especially Lead-Zinc Sintering Process generates, the advantage of this method are more obvious；
3, the present invention uses fluidization wash, further decreases the content of arsenic in leached mud, recycling product quality can be improved；
4, the present invention recycles valuable metal using reduction melting, realizes that metal comprehensive reutilization maximizes.
In short, the rational process of the present invention is arranged in pairs or groups, by strictly controlling the conditional parameter in each process, arsenic is enable to pacify
Full disposition, antimony, lead, bismuth etc. are recycled and efficiently use, and have achieved the purpose that environmentally friendly, economic, energy saving, high resource utilization,
Realize the innoxious and maximum resource utilization of arsenic.Since the separation of arsenic and other elements avoids fire using wet processing
The not high problem of massive pollution and the utilization of resources caused by method, entire technique substantially three-waste free discharge, all resources
Obtain maximal efficiency utilization, products therefrom be convenient for subsequent processing and processing, so the present invention have it is environmentally friendly, economical, energy saving,
The advantage of high resource utilization.
Description of the drawings
Fig. 1 is the method for the present invention flow diagram.
Specific implementation mode
Technical scheme of the present invention is described in detail below, wherein the percentage composition is mass fraction.
The arsenic-containing smoke dust (arsenic-containing material) being related to below includes following main component by percentage to the quality:Arsenic quality percentage
Content 1%~60%, antimony mass percentage 1%~55%, lead mass percentage 0.1%~35%, zinc quality percentage contain
Amount 0.1%~30%, copper mass percentage composition 0.1~5%, tellurium mass percentage 0.01%~3%, selenium mass percentage
0.01%~3%.
As shown in Figure 1, a kind of method of comprehensive utilization of arsenic-containing material, includes the following steps:
1, normal pressure alkali soaks process:Control extraction temperature be room temperature~100 DEG C, the time is 30~240min, liquid solid product
Mass ratio is 3:1~20:1(ml:G) normal pressure water logging is carried out to arsenic-containing smoke dust under conditions of, mixing speed is 50~1000r/min
Go out processing, so that arsenic and a small amount of antimony is dissolved into alkali leaching leachate, the elements such as most of antimony, lead, bismuth stay in leached mud.It is described
It refers to the volume mass ratio of NaOH solution and arsenic-containing smoke dust in terms of ml/g that liquid solid, which accumulates mass ratio,.
2, leachate selective reduction cleaning procedure:SO is added into leachate2Or sulfurous acid reduction, antimony, lead, tin impurity
With Precipitation.The pH value of solution is 0.5~6.5 after purification；Pure sodium arsenite is obtained after solid-liquor separation；Liquid is used after gained purification
In the raw material of solution of zinc sulfate arsenic Cobalt Purification nickel, purification slag send lead to smelt.
3, leached mud washing procedure:Leached mud is used into fluidization wash 2~3 times, the solvable arsenic in leached mud is down to
0.1% or less；Washing lotion, which can be returned, leaches i.e. return to step (1) for alkaline leaching feed liquid used；
4, washery slag recycles valuable metal process:Supplying charcoal, coal and a small amount of soda ash (Na after washery slag drying2CO3), 900~
1200 DEG C and have under the conditionings such as C, CO, the oxides such as Sb, Pb, Bi are equally also reduced into simple substance form and enter lead-antimony alloy
In.Pit ash and a small amount of arsenic, antimony, lead oxide light " the bubble slag " of the more alveolar substances generated is reacted with soda ash, float on antimony
Liquid surface.After the completion of reduction, bubble slag is clawed, under conditions of 650~800 DEG C of muffle of temperature, primary air is blasted into antimony liquid,
So that antimony volatilization is generated a large amount of antimony vapours, while auxiliary air is passed through to reactor, antimony vapour oxidation is made to generate antimony oxide, profit
The big calorimetric generated with antimony oxidation maintains antimony liquid temperature in the necessary temperature of reactor and stove.It is dense due to melt body surface metal antimony
Degree has comparative advantage, and metallic antimony property is more active than lead, bismuth, so that the antimony in aluminium alloy is oxidized to antimony oxide and is volatized into cigarette
Dirt, lead, bismuth then stay in the lead of reactor bottom, realize that a stove is dual-purpose.The wherein described reduction melting, oxidation blowing reactor used
For blast furnace, reverberatory furnace, bottom convertor, side-blown converter or top blast stove.
It is the embodiment of the present invention below.
Embodiment 1
Include following main component by percentage to the quality so that certain domestic Lead And Zinc Smelter contains arsenic smoke dust as an example:Pb
5.26%, As 39.65%, Sn 0.5%, Sb 29.36%, Zn 0.12%, Se 0.04%.
The high-arsenic antimony flue dust of certain mass is weighed in reaction kettle, mass ratio 10 is accumulated by liquid solid:1(ml:G) it, stirs
Speed 700r/min, NaOH concentration 1mol/L, 80 DEG C of extraction temperature, extraction time 2h carry out leaching experiment.After leaching,:
Remove slurry filtration separation；Arsenic leaching rate 72.36%. is measured, each element concentration Pb 86.00ppm, Se in leachate
1.80ppm, Zn 20.00ppm, Sb 1.36g/L, As 28.69g/L.
Leachate is passed through SO at room temperature2Gas reduction, reducing agent SO2Addition be by all arsenic in the leachate
2 times of theoretical amount needed for ion and tellurium ion reduction, it is 1L/min that gas, which controls flow, controlled at 40 DEG C, when ventilation
Between 2h.Pure sodium arsenite solution is obtained after cleaning procedure, after solid-liquor separation；Scavenging solution also can be used as solution of zinc sulfate arsenic
Purification section, and purification slag send lead to smelt.
Each element concentration Pb 1.29ppm, Se 0.89ppm, Zn 18ppm, Sb 1.19g/L, As in leachate
27.21g/L。
Leached mud is accumulated into mass ratio 5 according to liquid solid:1(ml:G) fluidization wash tower washing leached mud is used 2 times, washery slag
Containing solvable arsenic 0.1%.
Supplying charcoal, coal and soda ash after washery slag drying, carry out reduction melting in 1200 DEG C of reverberatory furnaces, and melting generates bubble
Slag, lead-antimony alloy and flue dust.Bubble slag send lead to smelt, and flue dust is returned to reduction melting or normal pressure alkali soaks, lead-antimony alloy enters oxidation
Blow process.Under the conditions of aoxidizing the muffle of 700 DEG C of blowing temperature, primary air is blasted into alloy, while logical to reactor
Enter auxiliary air, so that antimony vapour oxidation is generated antimony oxide, the antimony oxide of generation is as stibium trioxide product.The slag that blows is returned
Former smelting system, and the lead bullion aoxidized after blowing send lead rectification systems.Wherein Pb contains containing 24.38%, Sb in lead-antimony alloy
70.46%, As contain 3.08%；It is Sb that the stibium trioxide powder of generation, which meets the trade mark specified in GB/T 4062-2013,2O399.00 antimony
White powder；Contain Pb97.21% in lead bullion, contain Sb1.08%, contains As 0.37%.
Embodiment 2
Include following main component by percentage to the quality so that certain domestic Lead And Zinc Smelter contains arsenic smoke dust as an example:Pb
10.39%, As 34.59%, Sn 1.45%, Sb 20.54%, Zn 0.11%, Se 0.24%.
The high-arsenic antimony flue dust of certain mass is weighed in reaction kettle, mass ratio 10 is accumulated by liquid solid:1(ml:G) it, stirs
Speed 700r/min, NaOH concentration 3mol/L, 50 DEG C of extraction temperature, extraction time 4h carry out leaching experiment.After leaching, move
Go out slurry to be separated by filtration；Measure arsenic leaching rate 52.06%., each element concentration Pb 87ppm, Se 0.52ppm, Zn in leachate
71ppm, Sb 1.24g/L, As 18.01g/L.
Leachate is passed through SO at room temperature2Gas reduction, reducing agent SO2Addition be by all arsenic in the leachate
2 times of theoretical amount needed for ion and tellurium ion reduction, it is 3L/min that gas, which controls flow, controlled at 90 DEG C, when ventilation
Between 0.5h.After cleaning procedure, scavenging solution can be used as solution of zinc sulfate arsenic purification section, and purification slag send lead to smelt.
Each element concentration Pb 0.37ppm, Se 0.42ppm, Sb 1.17g/L, As 16.89g/L in scavenging solution.
Leached mud accumulates mass ratio 5 according to liquid solid:1(ml:G) fluidization wash tower washing leached mud is used 2 times, washery slag contains
Solvable arsenic 0.1%.
Supplying charcoal, coal and soda ash after washery slag drying, carry out reduction melting in 1150 DEG C of reverberatory furnaces, and melting generates bubble
Slag, lead-antimony alloy and flue dust.Bubble slag send lead to smelt, and flue dust is returned to reduction melting or normal pressure alkali soaks, lead-antimony alloy enters oxidation
Blow process.Under the conditions of aoxidizing the muffle of 800 DEG C of blowing temperature, primary air is blasted into alloy, while logical to reactor
Enter auxiliary air, so that antimony vapour oxidation is generated antimony oxide, the antimony oxide of generation is as stibium trioxide product.The slag that blows is returned
Former smelting system, and the lead bullion aoxidized after blowing send lead rectification systems.Wherein Pb contains containing 29.36%, Sb in lead-antimony alloy
63.89%, As contain 4.67%；It is Sb that the stibium trioxide powder of generation, which meets the trade mark specified in GB/T 4062-2013,2O399.00 antimony
White powder；Contain Pb96.14% in lead bullion, contain Sb2.61%, contains As 0.46%.
Embodiment 3
Include following main component by percentage to the quality so that certain domestic Lead And Zinc Smelter contains arsenic smoke dust as an example:Pb
19.57%, As 24.26%, Sn 1.47%, Sb 30.45%, Zn 0.16%, Se 0.21%.
The high-arsenic antimony flue dust of certain mass is weighed in reaction kettle, mass ratio 5 is accumulated by liquid solid:1(ml:G), stirring speed
It spends 1000r/min, NaOH concentration 1mol/L, 30 DEG C of extraction temperature, extraction time 2h and carries out leaching experiment.After leaching, move
Go out slurry to be separated by filtration；Measure arsenic leaching rate 42.26%, each element concentration Pb 124ppm, Se 0.67ppm, Zn in leachate
107ppm, Sb 2.02g/L, As 10.25g/L.
Leachate is passed through SO at room temperature2Gas reduction, the addition of reducing agent be by all arsenic in the leachate from
2 times of theoretical amount needed for son and tellurium ion reduction, it is 5L/min that gas, which controls flow, controlled at 30 DEG C, duration of ventilation
3h.After cleaning procedure, scavenging solution can be used as solution of zinc sulfate arsenic purification section, and purification slag send lead to smelt.
Each element concentration Pb 0.47ppm, Se 0.74ppm, Sb 1.89g/L, As 9.37g/L in scavenging solution.
Leached mud accumulates mass ratio 5 according to liquid solid:1(ml:G) fluidization wash tower washing leached mud is used 2 times, washery slag contains
Solvable arsenic 0.1%.
Supplying charcoal, coal and soda ash after washery slag drying, carry out reduction melting in 1200 DEG C of reverberatory furnaces, and melting generates bubble
Slag, lead-antimony alloy and flue dust.Bubble slag send lead to smelt, and flue dust is returned to reduction melting or normal pressure alkali soaks, lead-antimony alloy enters oxidation
Blow process.Under the conditions of aoxidizing the muffle of 650 DEG C of blowing temperature, primary air is blasted into alloy, while logical to reactor
Enter auxiliary air, so that antimony vapour oxidation is generated antimony oxide, the antimony oxide of generation is as stibium trioxide product.The slag that blows is returned
Former smelting system, and the lead bullion aoxidized after blowing send lead rectification systems.Wherein Pb contains containing 27.89%, Sb in lead-antimony alloy
66.96%, As contain 4.21%；It is Sb that the stibium trioxide powder of generation, which meets the trade mark specified in GB/T 4062-2013,2O399.00 antimony
White powder；Contain Pb96.69% in lead bullion, contain Sb2.12%, contains As 0.49%.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (4)
1. a kind of method of comprehensive utilization of arsenic-containing material, which is characterized in that include the following steps:
(1) normal pressure alkali soaks
Extraction temperature is room temperature~100 DEG C, the time is 30~240min, liquid solid product mass ratio be 3:1~20:1, NaOH is dense
Normal pressure alkali leaching is carried out to arsenic-containing smoke dust under conditions of degree is 0.1mol/L~6mol/L, mixing speed is 50~1000r/min
Processing；Filter to obtain leachate and leached mud；Liquid solid product mass ratio refer in terms of ml/g, NaOH solution and arsenic-containing smoke dust
Volume mass ratio；
The arsenic-containing smoke dust includes following main component by percentage to the quality:Arsenic:1%~60%, antimony:1%~55%, lead:
0.1%~35%, zinc:0.1%~30%, copper:0.1%~5%, tellurium:0.01%~3%, selenium:0.01%~3%；
(2) leachate selective reduction purifies
SO is added into leachate obtained by step (1)2Or sulfurous acid reduction, so that Pb is entered purification slag, the pH value of solution is after purification
0.5~6.5；Pure sodium arsenite solution is obtained after solid-liquor separation；SO2Gas flow is controlled in 0.5~5L/min, reaction temperature control
It is made as room temperature~90 DEG C, 0.5~4h of duration of ventilation；
(3) leached mud washs
Leached mud obtained by step (1) is used into fluidization wash, the solvable arsenic in leached mud is down to 0.1% or less；
(4) washery slag recycles valuable metal
Will supplying charcoal, coal and appropriate soda ash after washery slag drying obtained by step (3), in reactor in 900~1200 DEG C, have C,
Reduction melting is carried out under CO conditionings, melting generates bubble slag, lead-antimony alloy and flue dust；By the flue dust return reduction melting or
Normal pressure alkali soaks step；Lead is sent to smelt the bubble slag；
The lead-antimony alloy is subjected to oxidation blowing, is passed through air under conditions of muffle, obtains antimony vapour, blowing slag and thick
Lead；The antimony vapour is aoxidized and generates antimony oxide；The blowing slag is returned into reduction melting process；Send the lead bullion to lead
Refining.
2. according to the method described in claim 1, it is characterized in that, the washing of leached mud described in step (3) is washed using fluidization
Wash tower washing.
3. method according to claim 1 or 2, which is characterized in that reduction melting described in step (4), oxidation blowing institute
Reactor is blast furnace, reverberatory furnace, bottom convertor, side-blown converter or top blast stove.
4. method according to claim 1 or 2, which is characterized in that using pure sodium arsenite solution obtained by step (2) as sulphur
Raw material when sour zinc solution arsenic purification；Lead is sent to smelt purification slag.
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| CN108609653B (en) * | 2018-05-28 | 2020-06-23 | 中南大学 | Method for extracting arsenic from arsenic-nickel-cobalt-containing slag and preparing arsenate |
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| CN109763000A (en) * | 2018-12-10 | 2019-05-17 | 六盘水中联工贸实业有限公司 | A method of from height containing air oxidation removal arsenic in arsenic, zinc acid solution |
| CN109876630B (en) * | 2019-03-06 | 2021-09-21 | 株洲三特环保节能股份有限公司 | Method for treating sulfur dioxide flue gas and recovering tin-antimony metal and sodium sulfite crystals by using alkaline waste residues |
| CN109777963B (en) * | 2019-03-14 | 2020-07-14 | 王柯娜 | Recycling treatment method for ash of copper smelting furnace |
| CN114427034A (en) * | 2021-12-27 | 2022-05-03 | 湖南金业环保科技有限公司 | Method and equipment for treating industrial solid waste smelting furnace slag |
| CN114350960A (en) * | 2021-12-28 | 2022-04-15 | 山东恒邦冶炼股份有限公司 | Method for separating tellurium from soot generated in blowing process of silver-separating furnace |
| CN115259338A (en) * | 2022-07-29 | 2022-11-01 | 昆明理工大学 | Chloride modified lead slag and SiO (silicon dioxide) synergistic effect2Method for removing arsenic |
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