CN103468969A - Method for recycling silver and gold from waste brick of smelting furnace liner - Google Patents
Method for recycling silver and gold from waste brick of smelting furnace liner Download PDFInfo
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- CN103468969A CN103468969A CN2013104296077A CN201310429607A CN103468969A CN 103468969 A CN103468969 A CN 103468969A CN 2013104296077 A CN2013104296077 A CN 2013104296077A CN 201310429607 A CN201310429607 A CN 201310429607A CN 103468969 A CN103468969 A CN 103468969A
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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
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Abstract
The invention discloses a method for recycling the silver and gold from the waste brick of a smelting furnace liner. The method comprises the following steps of: crushing the waste brick of the liner of a silver/gold smelting furnace, adding the crushed waste brick and 40-60% of sulfuric acid into a reaction kettle for reaction to prepare the slag, from which the magnesium is removed by the sulfuric acid, adding sodium hydroxide into the above slag to prepare the leaching residue wet feed, adding nitric acid into the leaching residue wet feed, filtering the resulting product to obtain the nitric acid leaching residue, adding proper sodium chloride into the filtrate to prepare silver chloride, wherein the silver yield is 80-85%, adding chloroazotic acid into the nitric acid leaching residue, and reducing and recycling the gold by sulphurous acid. The method disclosed by the invention is simple in process and less in investment, and the rate for recycling the gold and the silver from the waste brick of the silver/gold smelting furnace is high.
Description
Technical field
The present invention relates to metallurgical technology field, relate in particular extract a kind of waste lining brick of the stove from gold silver smelting furance the method for noble metal.
Background technology
Gold and silver production at present mainly adopts pyrogenic process production.In pyrogenic process is produced, the anode sludge of output carries out the gold and silver melting again and obtains electrum after sulfurization roasting, deselenization, decopper(ing), due to backup lining brick bonding, infiltration, makes to be mingled with the noble metals such as gold and silver, copper in the lining brick of smelting furnace.Because the furnace lining of smelting furnace is running stores, needs regularly or irregularly repair or change.If throwing away, these salvaged lining bricks can cause very large waste.
Summary of the invention
Purpose of the present invention, be to extract silver and golden method open a kind of brick of the salvaged lining from smelting furnace that I invent, and can extract the valuable metal in smelting furance waste lining brick.
The technical scheme adopted is:
1, a kind of silver and golden method of reclaiming from smelting furance waste lining brick, be that the salvaged lining brick of gold silver smelting furance is ground into to fine powder with pulverizer, more further levigate again by shredder, after the 100-200 mesh sieve, obtains fine powder, standby;
2, get the sulfuric acid that concentration is 40-60%, put into the reactor of belt stirrer, then by the salvaged lining brick fine powder of step 1 preparation, put in reactor, the ratio of sulfuric acid and salvaged lining brick fine powder is 8-10:4-6, under agitation react 1-2 hour, temperature of reaction kettle remains on 100 ℃ ± 2, by absorption method, takes out MgS0
4solution, add 3-5 times of water gaging dilution, adds the flocculation agent polymeric aluminum sulfate silicate, and 50-60PPm, staticly settle 1-2 hour, takes out MgS0
4solution is separately deposited, then adds the suitable quantity of water dilution in reactor, filters, and washing, obtain sulfuric acid de-magging slag, is wet feed, and water content is 30-40%.
3, get the de-slag of appropriate sulfuric acid and put into container, add the sodium hydroxide that concentration is 25-50%, weight ratio is 6:1, and under agitation, in 60-80 ℃ of thermotonus, the reaction times is 1-1.5 hour, obtains N
ap
bo
2the aqueous solution, staticly settle, and washing, obtain the leached mud wet feed, standby.
4, step 3 gained leached mud wet feed is put into to leaching vat, add 35-40% nitric acid, ratio of components is 1:1, and stirring at normal temperature 8-10 hour adds 5-6 times of water gaging dilution, filters to obtain the nitric acid leached mud, and measuring device is collected.Add appropriate sodium-chlor in filtrate, precipitation, filter to obtain silver chloride, silver-colored yield 80-85%.
5, nitric acid leached mud step 4 obtained adds chloroazotic acid, and ratio of components is 1:1.5, and stirring at normal temperature 1-2 hour, wash leached mud with water, filters, and the adjusting pH value is 1-1.5, with sulfurous acid, reduces to obtain golden material.
Silver and golden noble metal method that the inventive method can reclaim in the useless lining brick of gold silver smelting furance are simple, and yield is high.
Embodiment
Embodiment mono-
1, a kind of silver and golden method of reclaiming from smelting furance waste lining brick, be that the salvaged lining brick of gold silver smelting furance is ground into to fine powder with pulverizer, more further levigate again by shredder, after the 100-200 mesh sieve, obtains fine powder, standby;
2, get the sulfuric acid that concentration is 40%, put into the reactor of belt stirrer, then by the salvaged lining brick fine powder of step 1 preparation, put in reactor, the ratio of sulfuric acid and salvaged lining brick fine powder is 10:6, under agitation react 1 hour, temperature of reaction kettle remains on 100 ℃ ± 2, by absorption method, takes out MgS0
4solution, add 3 times of water gaging dilutions, adds the flocculation agent polymeric aluminum sulfate silicate, and 50-60PPm, staticly settle 1-2 hour, takes out MgS0
4solution is separately deposited, then adds the suitable quantity of water dilution in reactor, filters, and washing, obtain sulfuric acid de-magging slag, is wet feed, and water content is 30-40%.
3, get the de-slag of appropriate sulfuric acid and put into container, add the sodium hydroxide that concentration is 25-50%, weight ratio is 6:1, and under agitation, in 60-80 ℃ of thermotonus, the reaction times is 1 hour, obtains N
ap
bo
2the aqueous solution, staticly settle, and washing, obtain the leached mud wet feed, standby.
4, step 3 gained leached mud wet feed is put into to leaching vat, add 35-40% nitric acid, ratio of components is 1:1, and stirring at normal temperature 8 hours adds 5 times of water gaging dilutions, filters to obtain the nitric acid leached mud, and measuring device is collected.Add appropriate sodium-chlor in filtrate, precipitation, filter to obtain silver chloride, silver-colored yield 80-85%.
5, nitric acid leached mud step 4 obtained adds chloroazotic acid, and ratio of components is 1:1.5, and stirring at normal temperature 1-2 hour, wash leached mud with water, filters, and regulating pH value is 1, with sulfurous acid, reduces to obtain golden material.
Embodiment bis-
1, a kind of silver and golden method of reclaiming from smelting furance waste lining brick, be that the salvaged lining brick of gold silver smelting furance is ground into to fine powder with pulverizer, more further levigate again by shredder, after the 100-200 mesh sieve, obtains fine powder, standby;
2, get the sulfuric acid that concentration is 60%, put into the reactor of belt stirrer, then by the salvaged lining brick fine powder of step 1 preparation, put in reactor, the ratio of sulfuric acid and salvaged lining brick fine powder is 10:6, under agitation react 2 hours, temperature of reaction kettle remains on 100 ℃ ± 2, by absorption method, takes out MgS0
4solution, add 5 times of water gaging dilutions, adds the flocculation agent polymeric aluminum sulfate silicate, and 50-60PPm, staticly settle 1-2 hour, takes out MgS0
4solution is separately deposited, then adds the suitable quantity of water dilution in reactor, filters, and washing, obtain sulfuric acid de-magging slag, is wet feed, and water content is 30-40%.
3, get the de-slag of appropriate sulfuric acid and put into container, add the sodium hydroxide that concentration is 25-50%, weight ratio is 6:1, and under agitation, in 60-80 ℃ of thermotonus, the reaction times is 1.5 hours, obtains N
ap
bo
2the aqueous solution, staticly settle, and washing, obtain the leached mud wet feed, standby.
4, step 3 gained leached mud wet feed is put into to leaching vat, add 35-40% nitric acid, ratio of components is 1:1, and stirring at normal temperature 10 hours adds 6 times of water gaging dilutions, filters to obtain the nitric acid leached mud, and measuring device is collected.Add appropriate sodium-chlor in filtrate, precipitation, filter to obtain silver chloride, silver-colored yield 80-85%.
5, nitric acid leached mud step 4 obtained adds chloroazotic acid, and ratio of components is 1:1.5, and stirring at normal temperature 1-2 hour, wash leached mud with water, filters, and regulating pH value is 1.5, with sulfurous acid, reduces to obtain golden material.
Embodiment tri-
1, a kind of silver and golden method of reclaiming from smelting furance waste lining brick, be that the salvaged lining brick of gold silver smelting furance is ground into to fine powder with pulverizer, more further levigate again by shredder, after the 100-200 mesh sieve, obtains fine powder, standby;
2, get the sulfuric acid that concentration is 45%, put into the reactor of belt stirrer, then by the salvaged lining brick fine powder of step 1 preparation, put in reactor, the ratio of sulfuric acid and salvaged lining brick fine powder is 8:4, under agitation react 1.5 hours, temperature of reaction kettle remains on 100 ℃ ± 2, by absorption method, takes out MgS0
4solution, add 4 times of water gaging dilutions, adds the flocculation agent polymeric aluminum sulfate silicate, and 50-60PPm, staticly settle 1-2 hour, takes out MgS0
4solution is separately deposited, then adds the suitable quantity of water dilution in reactor, filters, and washing, obtain sulfuric acid de-magging slag, is wet feed, and water content is 30-40%.
3, get the de-slag of appropriate sulfuric acid and put into container, add the sodium hydroxide that concentration is 25-50%, weight ratio is 6:1, and under agitation, in 60-80 ℃ of thermotonus, the reaction times is 1 hour, obtains N
ap
bo
2the aqueous solution, staticly settle, and washing, obtain the leached mud wet feed, standby.
4, step 3 gained leached mud wet feed is put into to leaching vat, add 35-40% nitric acid, ratio of components is 1:1, and stirring at normal temperature 8 hours adds 5 times of water gaging dilutions, filters to obtain the nitric acid leached mud, and measuring device is collected.Add appropriate sodium-chlor in filtrate, precipitation, filter to obtain silver chloride, silver-colored yield 80-85%.
5, nitric acid leached mud step 4 obtained adds chloroazotic acid, and ratio of components is 1:1.5, and stirring at normal temperature 1-2 hour, wash leached mud with water, filters, and regulating pH value is 1, with sulfurous acid, reduces to obtain golden material.
Claims (1)
1. one kind is reclaimed silver and golden method from smelting furance waste lining brick, it is characterized in that:
(1) the salvaged lining brick of gold silver smelting furance is ground into to fine powder with pulverizer, more further levigate again by shredder, after the 100-200 mesh sieve, obtain fine powder, standby;
(2), get the sulfuric acid that concentration is 40-60%, put into the reactor of belt stirrer, then the salvaged lining brick fine powder prepared by step (1), put in reactor, the ratio of sulfuric acid and salvaged lining brick fine powder is 8-10:4-6, under agitation react 1-2 hour, temperature of reaction kettle remains on 100 ℃ ± 2, by absorption method, takes out MgS0
4solution, add 3-5 times of water gaging dilution, adds the flocculation agent polymeric aluminum sulfate silicate, and 50-60PPm, staticly settle 1-2 hour, takes out MgS0
4solution is separately deposited, then adds the suitable quantity of water dilution in reactor, filters, and washing, obtain sulfuric acid de-magging slag, is wet feed, and water content is 30-40%;
(3), get the de-slag of appropriate sulfuric acid and put into container, add the sodium hydroxide that concentration is 25-50%, weight ratio is 6:1, under agitation, in 60-80 ℃ of thermotonus, the reaction times is 1-1.5 hour, obtains N
ap
bo
2the aqueous solution, staticly settle, and washing, obtain the leached mud wet feed, standby;
(4), step (3) gained leached mud wet feed is put into to leaching vat, add 35-40% nitric acid, ratio of components is 1:1, and stirring at normal temperature 8-10 hour adds 5-6 times of water gaging dilution, filter to obtain the nitric acid leached mud, measuring device is collected, and adds appropriate sodium-chlor in filtrate, precipitation, filter to obtain silver chloride, silver-colored yield 80-85%;
(5), nitric acid leached mud that step (4) is obtained adds chloroazotic acid, ratio of components is 1:1.5, stirring at normal temperature 1-2 hour, wash leached mud with water, filters, the adjusting pH value is 1-1.5, with sulfurous acid, reduces to obtain golden material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104296077A CN103468969A (en) | 2013-09-22 | 2013-09-22 | Method for recycling silver and gold from waste brick of smelting furnace liner |
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| CN2013104296077A CN103468969A (en) | 2013-09-22 | 2013-09-22 | Method for recycling silver and gold from waste brick of smelting furnace liner |
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| CN103468969A true CN103468969A (en) | 2013-12-25 |
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| CN2013104296077A Pending CN103468969A (en) | 2013-09-22 | 2013-09-22 | Method for recycling silver and gold from waste brick of smelting furnace liner |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105268541A (en) * | 2015-11-23 | 2016-01-27 | 郴州市金贵银业股份有限公司 | Method for recycling metals from furnace lining waste bricks |
| CN105385853A (en) * | 2015-11-12 | 2016-03-09 | 江西铜业技术研究院有限公司 | Treatment method for waste copper-bearing magnesite brick |
| US11136681B2 (en) | 2015-06-24 | 2021-10-05 | Greene Lyon Group, Inc. | Selective removal of noble metals using acidic fluids, including fluids containing nitrate ions |
| US11193214B2 (en) | 2013-12-20 | 2021-12-07 | Greene Lyon Group, Inc. | Method and apparatus for recovery of noble metals, including recovery of noble metals from plated and/or filled scrap |
| CN114717410A (en) * | 2022-03-02 | 2022-07-08 | 金川集团股份有限公司 | Process for collecting and recovering gold and silver from magnesite brick flotation concentrate |
-
2013
- 2013-09-22 CN CN2013104296077A patent/CN103468969A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11193214B2 (en) | 2013-12-20 | 2021-12-07 | Greene Lyon Group, Inc. | Method and apparatus for recovery of noble metals, including recovery of noble metals from plated and/or filled scrap |
| US11136681B2 (en) | 2015-06-24 | 2021-10-05 | Greene Lyon Group, Inc. | Selective removal of noble metals using acidic fluids, including fluids containing nitrate ions |
| CN105385853A (en) * | 2015-11-12 | 2016-03-09 | 江西铜业技术研究院有限公司 | Treatment method for waste copper-bearing magnesite brick |
| CN105385853B (en) * | 2015-11-12 | 2018-05-01 | 江西铜业技术研究院有限公司 | A kind of cupric gives up the processing method of magnesia brick |
| CN105268541A (en) * | 2015-11-23 | 2016-01-27 | 郴州市金贵银业股份有限公司 | Method for recycling metals from furnace lining waste bricks |
| CN105268541B (en) * | 2015-11-23 | 2018-04-24 | 郴州市金贵银业股份有限公司 | The method that metal is recycled from stove waste lining brick |
| CN114717410A (en) * | 2022-03-02 | 2022-07-08 | 金川集团股份有限公司 | Process for collecting and recovering gold and silver from magnesite brick flotation concentrate |
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Application publication date: 20131225 |