CN109136550A - A method of efficiently separating copper arsenic in setting form - Google Patents
A method of efficiently separating copper arsenic in setting form Download PDFInfo
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- CN109136550A CN109136550A CN201810987128.XA CN201810987128A CN109136550A CN 109136550 A CN109136550 A CN 109136550A CN 201810987128 A CN201810987128 A CN 201810987128A CN 109136550 A CN109136550 A CN 109136550A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/04—Obtaining lead by wet processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with acids or salts thereof
- C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/04—Obtaining arsenic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention belongs to chemical fields, disclose a kind of method for efficiently separating copper arsenic in setting form.This method comprises: setting form is crushed, is ground up, sieved by (1), setting form powder is obtained；(2) oxygen presses acidleach: above-mentioned setting form powder sulfuric acid solution, Cu2+Ion oxygen leaching carries out solid-liquor separation after the completion of leaching, obtains cupric leachate and leaded, silver-colored leached mud；(3) the heavy copper arsenic of leachate and the leaching of copper arsenic slag alkali obtain alkali leaching copper ashes and containing the higher alkali leaching solution of arsenic；(4) the heavy arsenic of refined lime: the heavy arsenic of refined lime is added into step (3) the alkali leaching solution, obtains calcium arsenate.Present invention process is simple and pollution-free, directly contact is avoided in production there may be the harm of arsenic hydride, not only no pollution to the environment noble metals such as copper, lead, silver in energy high efficiente callback lead copper matte again.
Description
Technical field
The invention belongs to chemical fields, are related to the wet-treating of setting form, and in particular to one kind efficiently separates in setting form
The method of copper arsenic.
Background technique
During lead pyrometallurgical smelting, lead copper matte is often generated during handling lead dross, the output capacity of matte is
The 0.5~2% of lead bullion, and usually we are referred to as setting form to the relatively high lead copper matte containing arsenic, setting form containing arsenic generally 5~
Between 15%, while copper content is also relatively high.Setting form is a kind of very high intermediate product of value, the inside copper, lead, gold, silver etc.
Bullion content is higher, but how to remove the arsenic in setting form into row also containing than impurity elements arsenic difficult to deal with simultaneously
Industry difficult point.
Currently, also having more research for the arsenic processing method in matte, it is broadly divided into pyrogenic process and wet-treating.At pyrogenic process
Managing main flow is to be blown to obtain blister copper to matte, and then further refining obtains refined copper, but pyrogenic attack technique is deposited
In the serious problems such as environmental pollution is big, process flow is long, operating cost is high and metal recovery rate is low.In order to make up these deficiencies,
Researchers turn one's attention to wet processing process, and wet-treating at present has acidleach and alkali leaching two schemes, such as China in 2011
Invention patent publication number CN201110191860.4 discloses a kind of using NH3-(NH4)2SO4Alkalescent compound system 110~
Oxygen leaching, copper and NH are carried out to setting form at a temperature of 200 DEG C3The method that coordination chemistry enters solution separation copper occurs；
But it is more the method using vitriol lixiviation setting form, such as Chinese invention patent publication number in 2014
CN201410595856.8, CN201410519503.X and Chinese invention patent publication number CN201510252217.6 in 2015
All be to take the leaching for carrying out copper to setting form with sulfuric acid solution, only concrete operations and under the conditions of different, leachate
Each element content also has very big difference, this also directly influences the operation difficulty of purification of leaching liquor and copper electrodeposition workshop section, for place
The high copper sulfate leaching liquid of impurity content is managed, has the technology using cyclone electrolytic cell come cathode copper at present, this technology contains arsenic in liquid
Amount and the requirement of other impurity elements are relatively low, adapt to large range of copper sulfate electrolyte, are that a kind of exploitation at present is preferable
Technology, but for most of copper electrodeposition enterprise, overwhelming majority enterprise still uses traditional copper sulfate bath technique at present
And equipment, it builds a set of cyclone electrolytic cell equipment investment and needs several ten million, be difficult to afford this for many medium-sized and small enterprises
A expense, and equipment and technique old inside enterprise temporarily can also be with would not once be eliminated, this requires copper sulphate to leach
Impurity few as far as possible will just be able to satisfy our old copper electrodeposition production lines in liquid.In face of that should guarantee that leaching rate guarantees leachate again
The low challenge of middle impurity content is badly in need of finding a kind of better method to handle setting form at present.
Summary of the invention
For problems and shortcomings existing for existing setting form processing technique, the present invention provides one kind to efficiently separate arsenic ice
The method of copper arsenic in copper, this method is easy to operate, simple process and process are short, is not required to addition new equipment, both no pollution to the environment
Energy a variety of valuable metals of high efficiente callback (copper, arsenic, lead, silver) etc. again.
A method of copper arsenic in setting form being efficiently separated, the method comprising the steps of:
(1) setting form pre-processes: using setting form as raw material, setting form being crushed, is ground up, sieved, obtain setting form powder；
(2) oxygen presses acidleach: above-mentioned setting form powder sulfuric acid solution oxygen leaching, carries out solid-liquor separation after the completion of leaching, obtains
To cupric leachate and leaded, silver-colored leached mud；
(3) the heavy copper arsenic of leachate and the leaching of copper arsenic slag alkali: step (2) the leachate heavy copper arsenic of piece alkali, solid-liquor separation go out
Come heavy copper ashes with sodium hydroxide solution alkali soak, leach after the completion of carry out solid-liquor separation, obtain alkali leaching copper ashes and containing arsenic it is higher
Alkali soaks solution；
(4) the heavy arsenic of refined lime: the heavy arsenic of refined lime is added into step (3) the alkali leaching solution, obtains calcium arsenate.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, setting form raw material described in step (1) includes element:
Cu 35~56wt%, As 9~18wt%, Fe 1~5wt%, S 0.5~12wt%, Pb 7~19wt%, Sb 2~
1456~4638g/t of 10wt%, Ag.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, sieving described in step (1) are to sieve with 100 mesh sieve；It is preferred that
Cross 200 meshes.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, the concentration of sulfuric acid solution described in step (2) is 80~
160g/L；Such as 100~140g/L, 110~130g/L.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, sulfuric acid solution described in step (2) and setting form powder
Liquid-solid ratio (L/g) is 5~10: 1；Such as 6~8: 1.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, Cu described in step (2)2+The additional amount of ion be 2~
10g/L；Such as 3~8g/L, 4~7g/L.The Cu2+Ion can be provided by mantoquitas such as copper sulphate, copper carbonates.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, the item of sulfuric acid solution oxygen leaching described in step (2)
Part are as follows: 120~180 DEG C of extraction temperature, 3~5h of extraction time, 0.6~1.2MPa of partial pressure of oxygen.For example, extraction temperature 140~160
DEG C, 4~5h of extraction time, 0.8~1.0MPa of partial pressure of oxygen.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, leaded, silver-colored leached mud described in step (2) can be with
It returns to pyrogenic process system and recycles lead, silver.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, cupric leachate described in step (2) can recycle after
Continue and presses acidleach for oxygen.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, the condition of the heavy copper arsenic of piece alkali described in step (3) are as follows:
Stirring at normal temperature adds piece alkali to adjust leachate pH to 4.5~5.0, then solid-liquor separation.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, the condition of the leaching of alkali described in step (3) are as follows: liquid-solid ratio
(L/kg) 4~7: 1, temperature is 65~85 DEG C, and extraction time is 1~2h.For example, liquid-solid ratio (L/kg) 5~6: 1, temperature 70
~80 DEG C, extraction time is 1~2h.
Wherein, the concentration of the above-mentioned method for efficiently separating copper arsenic in setting form, sodium hydroxide solution described in step (3) is
20~40g/L；Such as 25~35g/L.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, containing in the higher alkali leaching solution of arsenic described in step (3)
Arsenic concentration is 5~20g/L；Such as 10~16g/L.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, alkali described in step (3) soak arsenic content in copper ashes and are lower than
0.3wt%, copper grade reach 70~85wt%.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, the leaching copper ashes of alkali described in step (3) are purified through acidleach,
Copper electrodeposition, which is carried out, into conventional electro deposited copper system recycles copper.
Wherein, the purity requirement of the above-mentioned method for efficiently separating copper arsenic in setting form, refined lime described in step (4) exists
85% or more；Such as 87% or more, 90% or more.The dosage of the refined lime be generate calcium arsenate needed for theoretical amount 1.0~
1.5 again.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form sinks the reaction item of arsenic with refined lime described in step (4)
Part are as follows: reaction temperature is 85~95 DEG C, and the reaction time is 3~5h.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, arsenic in liquid after refined lime described in step (4) has been handled
For content within 10mg/L, rear liquid can be sent directly into sewage plant processing.
Compared with prior art, the beneficial effects of the present invention are:
The technology presses acidleach wet process extract technology using oxygen, and avoiding pyrogenic attack technique well, there are operating costs
The high, serious problems such as environmental pollution is big, process flow is long and metal recovery rate is low, both can guarantee valuable metal leaching rate or sediment
Rate, and copper arsenic separation can be carried out well, the purer copper sulfate leaching liquid for meeting copper sulphate electrodeposition requirement is obtained, there is operation
Easy, the advantages that process flow is short, recovery rate of valuable metals is high, free from environmental pollution.
Detailed description of the invention
Fig. 1 is the process flow chart that the embodiment of the present invention 1 recycles copper arsenic from setting form.
Specific embodiment
The method provided by the invention for efficiently separating copper arsenic in setting form, this method specifically include step:
(1) setting form pre-processes: using setting form as raw material, setting form being crushed, is ground up, sieved, obtain setting form powder；Institute
Stating setting form raw material includes element: Cu 35~56wt%, As 9~18wt%, Fe 1~5wt%, S 0.5~12wt%, Pb
1456~4638g/t of 7~19wt%, Sb 2~10wt%, Ag.
(2) oxygen presses acidleach: above-mentioned setting form powder sulfuric acid solution oxygen leaching, the liquid-solid ratio of sulfuric acid solution and setting form powder
(L/g) it is 5~10: 1, Cu is added2+The amount of ion be 2~10g/L, 120~180 DEG C of extraction temperature, 3~5h of extraction time, oxygen
Divide 0.6~1.2MPa；Solid-liquor separation is carried out after the completion of leaching, and obtains cupric leachate and leaded, silver-colored leached mud；
(3) leachate sinks copper arsenic and the leaching of copper arsenic slag alkali: step (2) the leachate piece alkali sinks copper arsenic: stirring at normal temperature adds
Piece alkali adjusts leachate pH to 4.5~5.0, and the heavy copper ashes that solid-liquor separation comes out is soaked with sodium hydroxide solution alkali, after the completion of leaching
Solid-liquor separation is carried out, obtains alkali leaching copper ashes and containing the higher alkali leaching solution of arsenic；
(4) the heavy arsenic of refined lime: the heavy arsenic of refined lime is added into step (3) the alkali leaching solution, reaction temperature is 85~95
DEG C, the reaction time is 3~5h, obtains calcium arsenate.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, sieving described in step (1) are to sieve with 100 mesh sieve；It is preferred that
Cross 200 meshes.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, the concentration of sulfuric acid solution described in step (2) is 80~
160g/L；Such as 100~140g/L, 110~130g/L.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, leaded, silver-colored leached mud described in step (2) can be with
It returns to pyrogenic process system and recycles lead, silver.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, cupric leachate described in step (2) can recycle after
Continue and presses acidleach for oxygen.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, the condition of the leaching of alkali described in step (3) are as follows: liquid-solid ratio
(L/kg) 4~7: 1, temperature is 65~85 DEG C, and extraction time is 1~2h.For example, liquid-solid ratio (L/kg) 5~6: 1, temperature 70
~80 DEG C, extraction time is 1~2h.
Wherein, the concentration of the above-mentioned method for efficiently separating copper arsenic in setting form, sodium hydroxide solution described in step (3) is
20~40g/L；Such as 25~35g/L.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, containing in the higher alkali leaching solution of arsenic described in step (3)
Arsenic concentration is 5~20g/L；Such as 10~16g/L.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, alkali described in step (3) soak arsenic content in copper ashes and are lower than
0.3wt%, copper grade reach 70~85wt%.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, the leaching copper ashes of alkali described in step (3) are purified through acidleach,
Copper electrodeposition, which is carried out, into conventional electro deposited copper system recycles copper.
Wherein, the purity requirement of the above-mentioned method for efficiently separating copper arsenic in setting form, refined lime described in step (4) exists
85% or more；Such as 87% or more, 90% or more.The dosage of the refined lime be generate calcium arsenate needed for theoretical amount 1.0~
1.5 again.
Wherein, the above-mentioned method for efficiently separating copper arsenic in setting form, arsenic in liquid after refined lime described in step (4) has been handled
For content within 10mg/L, rear liquid can be sent directly into sewage plant processing.
Further detailed description is done to technical solution of the present invention below in conjunction with specific embodiment.The following example
It is merely illustrative the ground description and interpretation present invention, and is not necessarily to be construed as limiting the scope of the invention.It is all to be based on this hair
In the range of the technology that bright above content is realized is encompassed by the present invention is directed to protect.
Unless otherwise indicated, raw materials and reagents used in the following embodiment are commercial goods, or can be by
Perception method preparation.
Embodiment 1
By setting form (Cu 49.22wt%, As 15.83wt%, Fe 1.75wt%, S 0.6wt%, Pb
15.69wt%, Sb 6.05wt%, Ag 3071g/t) it is broken, milling sieves with 100 mesh sieve.Take 150g setting form powder and sulfuric acid molten
Liquid and Cu2+Ion be added reaction kettle in, sulfuric acid solution concentration be 150g/L, temperature set 130 DEG C, liquid-solid ratio 6: 1 (mL/g),
Partial pressure of oxygen is 0.8MPa, Cu2+Ion additional amount is 2g/L, reaction time 4h.After Leach reaction, solid-liquor separation is carried out, is obtained
To copper sulfate leaching liquid, for the non-ferrous metals such as lead, silver there are in leached mud, leached mud returns to the metals such as pyrogenic process system recycling lead silver.
The heavy copper arsenic of piece alkali is carried out to copper sulfate leaching liquid, adjusts pH to 4.5, the leaching of copper arsenic slag alkali, 20g/L sodium hydroxide solution, liquid-solid ratio 5:1
(mL/g), refined lime, 85 DEG C of stirring in water bath reactions are added in 80 DEG C of stirring in water bath 2h, solid-liquor separation, solution 22.04g/L containing arsenic
4h, solid-liquor separation, liquid blowdown water station are uniformly processed.
Through assay, it is 96.82% that oxygen, which presses acidleach copper leaching rate, and the valuable metals such as lead, silver enter slag rate 99.98%, alkali
Soak copper ashes Cu be 72.38%, arsenic 0.28%, refined lime handle 0.008g/L containing arsenic in liquid afterwards.
Embodiment 2
By setting form (Cu 45.22wt%, As 10.91wt%, Fe 5.24wt%, S 3.41wt%, Pb
15.66wt%, Sb 4.77wt%, Ag 2854g/t) it is broken, milling sieves with 100 mesh sieve.Take 150g setting form powder and sulfuric acid molten
Liquid and Cu2+Ion is added in reaction kettle, and sulfuric acid solution concentration is 100g/L, and temperature sets 150 DEG C, and liquid-solid ratio is 8:1 (mL/g),
Partial pressure of oxygen is 0.8MPa, Cu2+Ion additional amount is 5g/L, reaction time 4h.After Leach reaction, solid-liquor separation is carried out, is obtained
To copper sulfate leaching liquid, for the non-ferrous metals such as lead, silver there are in leached mud, leached mud returns to the metals such as pyrogenic process system recycling lead silver.
The heavy copper arsenic of piece alkali is carried out to leachate, adjusts pH to 4.5, the leaching of copper arsenic slag alkali, 30g/L sodium hydroxide solution, liquid-solid ratio 6:1 (mL/
G), refined lime is added in 80 DEG C of stirring in water bath 2h, solid-liquor separation, solution 14.8g/L containing arsenic, and 90 DEG C of stirring in water bath react 3.5h, liquid
Gu separation, liquid blowdown water station are uniformly processed.
Through assay, it is 98.02% that oxygen, which presses acidleach copper leaching rate, and the valuable metals such as lead, silver enter slag rate 99.97%, alkali
Soak copper ashes Cu be 78.33%, arsenic 0.17%, refined lime handle 0.009g/L containing arsenic in liquid afterwards.
Embodiment 3
By setting form (Cu 42.52wt%, As 13.76wt%, Fe 5.09wt%, S 4.14wt%, Pb
10.44wt%, Sb 5.87wt%, Ag 4154g/t) it is broken, milling sieves with 100 mesh sieve.Take 150g setting form powder and sulfuric acid molten
Liquid and Cu2+Ion is added in reaction kettle, and sulfuric acid solution concentration is 80g/L, and temperature sets 180 DEG C, and liquid-solid ratio is 10:1 (mL/g),
Partial pressure of oxygen is 1.2MPa, Cu2+Ion additional amount is 8g/L, reaction time 4h.After Leach reaction, solid-liquor separation is carried out, is obtained
To copper sulfate leaching liquid, for the non-ferrous metals such as lead, silver there are in leached mud, leached mud returns to the metals such as pyrogenic process system recycling lead silver,
The heavy copper arsenic of piece alkali is carried out to leachate, adjusts pH to 4.5~5.0, the leaching of copper arsenic slag alkali, 40g/L sodium hydroxide solution, liquid-solid ratio 5:1
(mL/g), refined lime is added in 80 DEG C of stirring in water bath 2h, solid-liquor separation, solution 19.6g/L containing arsenic, and 90 DEG C of stirring in water bath react 4h,
Solid-liquor separation, liquid blowdown water station are uniformly processed.
Through assay, it is 98.66% that oxygen, which presses acidleach copper leaching rate, and the valuable metals such as lead, silver enter slag rate 99.99%, alkali
Soak copper ashes Cu be 80.01%, arsenic 0.11%, refined lime handle 0.010g/L containing arsenic in liquid afterwards.
More than, embodiments of the present invention are illustrated.But the present invention is not limited to above embodiment.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of method for efficiently separating copper arsenic in setting form, which is characterized in that the method comprising the steps of:
(1) setting form pre-processes: using setting form as raw material, setting form being crushed, is ground up, sieved, obtain setting form powder；
(2) oxygen presses acidleach: above-mentioned setting form powder sulfuric acid solution, Cu2+Ion oxygen leaching carries out liquid after the completion of leaching and divides admittedly
From obtaining cupric leachate and leaded, silver-colored leached mud；
(3) the heavy copper arsenic of leachate and the leaching of copper arsenic slag alkali: step (2) the leachate heavy copper arsenic of piece alkali, what solid-liquor separation came out
Heavy copper ashes is soaked with sodium hydroxide solution alkali, carries out solid-liquor separation after the completion of leaching, and obtains alkali leaching copper ashes and containing the higher alkali leaching of arsenic
Solution；
(4) the heavy arsenic of refined lime: the heavy arsenic of refined lime is added into step (3) the alkali leaching solution, obtains calcium arsenate.
2. the method according to claim 1 for efficiently separating copper arsenic in setting form, which is characterized in that described in step (1)
Setting form raw material includes element: Cu 35~56wt%, As 9~18wt%, Fe 1~5wt%, S 0.5~12wt%, Pb 7
1456~4638g/t of~19wt%, Sb 2~10wt%, Ag；
The sieving is to sieve with 100 mesh sieve.
3. the method according to claim 1 for efficiently separating copper arsenic in setting form, which is characterized in that described in step (2)
The concentration of sulfuric acid solution is 80~160g/L, and the liquid-solid ratio (L/g) of the sulfuric acid solution and setting form powder is 5~10: 1；It is described
Cu2+The additional amount of ion is 2~10g/L.
4. the method according to claim 3 for efficiently separating copper arsenic in setting form, which is characterized in that described in step (2)
The condition of sulfuric acid solution oxygen leaching are as follows: 120~180 DEG C of extraction temperature, 3~5h of extraction time, 0.6~1.2MPa of partial pressure of oxygen.
5. the method according to claim 3 for efficiently separating copper arsenic in setting form, which is characterized in that described in step (2)
Leaded, silver-colored leached mud can return to pyrogenic process system recycling lead, silver, and the cupric leachate, which can recycle, continues on for oxygen pressure acid
Leaching.
6. the method according to claim 1 for efficiently separating copper arsenic in setting form, which is characterized in that described in step (3)
The condition of the heavy copper arsenic of piece alkali are as follows: stirring at normal temperature adds piece alkali to adjust leachate pH to 4.5~5.0, then solid-liquor separation.
7. the method according to claim 6 for efficiently separating copper arsenic in setting form, which is characterized in that described in step (3)
The condition of alkali leaching are as follows: liquid-solid ratio (L/kg) 4~7: 1, temperature are 65~85 DEG C, and extraction time is 1~2h；The sodium hydroxide is molten
The concentration of liquid is 20~40g/L.
8. the method according to claim 1 for efficiently separating copper arsenic in setting form, which is characterized in that described in step (3)
Alkali soaks arsenic content in copper ashes and is lower than 0.3wt%, and copper grade reaches 70~85%；Alkali leaching copper ashes is purified through acidleach, into normal
It advises electro deposited copper system and carries out copper electrodeposition recycling copper.
9. the method according to claim 1 for efficiently separating copper arsenic in setting form, which is characterized in that described in step (4)
85% or more, the dosage of the refined lime is 1.0~1.5 of theoretical amount needed for generating calcium arsenate for the purity requirement of refined lime
Times；It is described to sink the reaction condition of arsenic with refined lime are as follows: reaction temperature is 85~95 DEG C, and the reaction time is 3~5h.
10. the method according to claim 1 for efficiently separating copper arsenic in setting form, which is characterized in that described in step (4)
For arsenic content within 10mg/L, rear liquid can be sent directly into sewage plant processing in liquid after refined lime has been handled.
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| CN113249580A (en) * | 2021-06-07 | 2021-08-13 | 赛恩斯环保股份有限公司 | Method for recovering gold from smelting waste acid wastewater |
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| CN113249580A (en) * | 2021-06-07 | 2021-08-13 | 赛恩斯环保股份有限公司 | Method for recovering gold from smelting waste acid wastewater |
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