CN106222421A - Gold mud treatment method - Google Patents
Gold mud treatment method Download PDFInfo
- Publication number
- CN106222421A CN106222421A CN201610675689.7A CN201610675689A CN106222421A CN 106222421 A CN106222421 A CN 106222421A CN 201610675689 A CN201610675689 A CN 201610675689A CN 106222421 A CN106222421 A CN 106222421A
- Authority
- CN
- China
- Prior art keywords
- gold
- filter cake
- filtrate
- mud
- obtains
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- 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
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
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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
- C22B11/02—Obtaining noble metals by dry processes
- C22B11/021—Recovery of noble metals from waste materials
- C22B11/023—Recovery of noble metals from waste materials from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
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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
- C22B11/042—Recovery of noble metals from waste materials
- C22B11/044—Recovery of noble metals from waste materials from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
-
- 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
- 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
- C22B7/001—Dry processes
-
- 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
- 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
- C22B7/006—Wet processes
-
- 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 relates to a gold mud treatment method, which comprises the following steps: (1) adding hydrochloric acid into the gold mud to remove impurities, and filtering after removing the impurities to obtain a filter cake and a filtrate containing zinc, lead and copper; (2) drying the filter cake obtained in the step (1), adding a slag former into the filter cake after drying, and smelting to obtain alloy rich in gold and smelting slag; (3) and (3) pulverizing the gold-enriched alloy obtained in the step (2), adding nitric acid to dissolve the gold-enriched alloy, filtering the gold-enriched alloy to obtain a gold-containing filter cake and filtrate, performing controlled potential reduction on the gold-containing filter cake to obtain sponge gold, and performing fusion casting on the sponge gold to obtain a product gold. The method has the advantages of strong adaptability, high gold recovery rate, high gold product purity and the like.
Description
Technical field
The present invention relates to the processing method of a kind of gold mud containing gold the lowest (gold content is by mass percentage less than 1%).
Background technology
Gold mud material is broadly divided into cyaniding-zinc dust precipitation gold mud, the anode mud of copper electroplating, lead electrolysis anode sludge three major types.Yellow
In gold production process, the process technique of gold mud has multiple, and each producer, according to different situations such as gold mud composition, the market demands, takes
Different process technique.It is summed up the big class of wet method melting two of pyrometallurgical smelting and the gold-bearing material that can be divided into gold-bearing material.
General thermal process i.e. pyrometallurgical smelting, melts slag making with slag former and obtains gold alloy, and then electrolysis alloy divides
From refine gold silver.During produce a large amount of smelting slags return other system reclaim valuable metal.
Wet method smelting technology is typically initially with metals such as acidifying means, the copper-lead zinc in removing gold mud；Separate the most again
Gold silver, the gold silver after separation carries out the step such as precipitate reduction, refine respectively and obtains noble metal products.
Gold mud and cyanidation tailings pyrite cinder chloridizing volatilization that low-grade tailings obtains through zinc cyanide powder substitution obtain
The gold mud arrived, this gold mud gold content is all about 0.5%.Use conventional pyrogenic process and wet method smelting process to process this low-grade to contain
During gold material, being required for taking secondary cyaniding to process and could reclaim the gold in gold mud, and long flow path, the response rate is low.
Summary of the invention
The present invention be directed to the deficiency that prior art exists, it is provided that a kind of the lowest (gold content is by mass percentage containing gold
Meter is less than 1%) the processing method of gold mud, this method gold recovery is high, adaptability to raw material is strong, simple to operate.
The present invention is achieved by the following technical solutions.
The processing method of a kind of gold mud, it is characterised in that its step includes:
(1) carry out remove impurity by gold mud adds hydrochloric acid, filter after remove impurity, obtain filter cake and containing zinc, lead, the filtrate of copper；
(2) filter cake that step (1) obtains is dried, is dried addition slag former in backward filter cake and carries out melting, be enriched with
The alloy of gold and smelting slag；
(3) alloy pulverization of the Concentration of Gold that step (2) is obtained, add nitric acid dissolve after filter, obtain containing gold filter cake and
Filtrate, is controlled potential reduction to the filter cake containing gold and obtains cake of gold, cake of gold is carried out founding, obtains product gold.
According to above-mentioned method, it is characterised in that in described gold mud, gold content is by mass percentage less than 1%.
According to above-mentioned method, it is characterised in that after the filtrate obtained through step (3) is caught up with nitre, carry out heavy silver, filter
To argentiferous filter cake and filtrate, the filtrate obtained is carried out valuable metal recovery, argentiferous filter cake is carried out zinc powder after heavy silver, filtration
Displacement obtains argentum powder, the argentum powder obtained through displacement is added slag former and carries out founding, obtain silver ingot.
According to above-mentioned method, it is characterised in that the composition of described slag former be Borax, sodium carbonate, quartz sand, Sal Nitri,
Powdered carbon.
The present invention is processing containing in the lowest gold mud method of gold, have compared with existing conventional gold sludge treatment technology with
Lower advantage: (1) is to the grade strong adaptability of gold in gold mud；(2) gold recovery is greatly improved, and the response rate reaches 99%；(3) gold product
Purity is high, and finished product gold purity is up to 99%.
Accompanying drawing explanation
The process flow diagram that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Below the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment
It is only a part of embodiment of the present invention rather than whole embodiments.Based on embodiments of the invention, ordinary skill people
The every other embodiment that member is obtained under not making creative work premise, broadly falls into protection scope of the present invention.
The embodiment of the present invention provides one containing the place of the gold mud of gold the lowest (gold content is by mass percentage less than 1%)
Reason method, can gold silver in efficient recovery gold mud and other valuable metal copper-lead zinc, as it is shown in figure 1, the method includes walking as follows
Rapid:
(1) difficult gold mud (gold content by mass percentage less than 1%) is carried out hydrochloric acid remove impurity, remove major part zinc, lead,
Copper, controls Ph value between 0.5～1；Filtering after hydrochloric acid remove impurity, obtain filter cake and containing zinc, lead, the filtrate of copper, filtrate is entered
The synthetical recovery of the valuable metals such as row copper-lead zinc；
(2) filter cake that step (1) obtains being put into baking oven to be dried, dried filter cake adds slag former and carries out melting,
To alloy and the smelting slag of Concentration of Gold, slag former composition is Borax, sodium carbonate, quartz sand, Sal Nitri, powdered carbon；
(3) alloy pulverization of Concentration of Gold step (2) obtained, is subsequently adding nitric acid and dissolves, and separates gold and other metals；
Alloy carries out being filtrated to get containing gold filter cake and filtrate after nitric acid dissolves, and the filter cake containing gold obtained is added oxalic acid and carries out controlling current potential
Reduction obtains cake of gold, and cake of gold is carried out intermediate frequency furnace founding, obtains product gold；
(4), after the filtrate that step (3) obtains being caught up with nitre, carry out heavy silver, filter, obtain argentiferous filter cake and filtrate, will be through heavy silver, mistake
The filtrate obtained after filter carries out valuable metal recovery；Argentiferous filter cake is carried out zinc dust precipitation and obtains argentum powder；Zinc dust precipitation obtains
Argentum powder adds slag former (slag former composition is Borax, sodium carbonate, quartz sand, Sal Nitri, powdered carbon) and carries out intermediate frequency furnace founding, obtains silver
Ingot.
Embodiment
Certain Lead And Zinc Smelter, the low-grade ore obtained after Pb-Zn deposits ore dressing is containing gold about 3g/t, low-grade containing gold mine tailing warp
The gold mud that cyanidation gold-extracted zinc dust precipitation obtains is 3 ‰ containing gold.This low-grade containing gold mine after cyanidation gold-extracted zinc dust precipitation
The gold mud main component arrived is as follows: Zn 25%, Pb 15%, Cu 10%, Au3 ‰, Ag 6g/t.Drying baker uses car-type to dry
Case, rated temperature 600 DEG C, filter cake is after oven for drying, aqueous below 3%.
Gold mud after drying loads 2000L titanium material reactor, once loads 400kg, carries out the preliminary remove impurity of hydrochloric acid, removes big
Part lead, zinc, copper.Gold mud after remove impurity filters.Filtrate returns lead zinc processing system and reclaims copper-lead zinc.Baking oven put into by filter cake
It is dried.Dried gold mud carries out intermediate frequency furnace slag making melting, intermediate frequency furnace specification: the every stove for the treatment of scale 100kg, rated power
100KW, rated temperature 1400 DEG C.
Smelting slag that intermediate frequency furnace melting obtains returns ore grinding valuable metal secondary recovery system, and reclaiming has valency gold in slag
Belong to.Molten alloy processes through efflorescence and sends into 2000L titanium material reactor and carry out nitric acid dissolving, the entrance of the metal such as copper, lead, zinc, silver
Solution, gold enters slag.
The filter cake addition oxalic acid containing gold carries out controlling potential reduction and obtains cake of gold, and cake of gold carries out founding further, available
The product gold of grade more than 99%.
After salpeter solution catches up with nitre, enter heavy silver operation.Heavy silver, it is filtrated to get filtrate and the further synthetical recovery of argentiferous filter cake
The metals such as copper-lead zinc, argentiferous filter cake carries out zinc dust precipitation silver, and (slag former composition is boron finally the argentum powder obtained to be added slag former
Sand, sodium carbonate, quartz sand, Sal Nitri, powdered carbon) carry out intermediate frequency furnace founding and obtain silver ingot.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change that can readily occur in or replacement,
All should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be as the criterion.
Claims (4)
1. the processing method of a gold mud, it is characterised in that its step includes:
(1) carry out remove impurity by gold mud adds hydrochloric acid, filter after remove impurity, obtain filter cake and containing zinc, lead, the filtrate of copper；
(2) filter cake that step (1) obtains is dried, is dried addition slag former in backward filter cake and carries out melting, be enriched with
The alloy of gold and smelting slag；
(3) alloy pulverization of the Concentration of Gold that step (2) is obtained, add nitric acid dissolve after filter, obtain containing gold filter cake and
Filtrate, is controlled potential reduction to the filter cake containing gold and obtains cake of gold, cake of gold is carried out founding, obtains product gold.
Processing method the most according to claim 1, it is characterised in that in described gold mud, gold content is by mass percentage
Less than 1%.
Processing method the most according to claim 1, it is characterised in that after the filtrate obtained through step (3) is caught up with nitre, carry out
Heavy silver, it is filtrated to get argentiferous filter cake and filtrate, the filtrate obtained after heavy silver, filtration is carried out valuable metal recovery, by argentiferous
Filter cake carries out zinc dust precipitation and obtains argentum powder, the argentum powder obtained through displacement is added slag former and carries out founding, obtain silver ingot.
4. according to the processing method described in claim 1 or 3, it is characterised in that the composition of described slag former is Borax, carbonic acid
Sodium, quartz sand, Sal Nitri, powdered carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610675689.7A CN106222421A (en) | 2016-08-17 | 2016-08-17 | Gold mud treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610675689.7A CN106222421A (en) | 2016-08-17 | 2016-08-17 | Gold mud treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106222421A true CN106222421A (en) | 2016-12-14 |
Family
ID=57552532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610675689.7A Pending CN106222421A (en) | 2016-08-17 | 2016-08-17 | Gold mud treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106222421A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319744A (en) * | 2017-07-31 | 2019-02-12 | 成都中建材光电材料有限公司 | A kind of preparation method of 4N tellurium |
| CN110306066A (en) * | 2019-07-22 | 2019-10-08 | 山东国大黄金股份有限公司 | A kind of multistage gold extracting method of the difficult tailing of gold containing arsenic |
| CN110724827A (en) * | 2019-10-23 | 2020-01-24 | 金川集团股份有限公司 | Method for enriching precious metals from sponge copper leaching residues |
| CN110842158A (en) * | 2019-11-12 | 2020-02-28 | 珠海格力绿色再生资源有限公司 | Smelting and casting method of sponge gold and application thereof |
| CN115058596A (en) * | 2022-06-06 | 2022-09-16 | 青海大柴旦矿业有限公司 | Efficient treatment and recovery method for smelting slag |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4155177B2 (en) * | 2002-11-29 | 2008-09-24 | 三菱マテリアル株式会社 | Method for recovering silver from silver-lead-containing materials |
| CN101660057A (en) * | 2009-08-03 | 2010-03-03 | 招金矿业股份有限公司 | Wet method gold extraction process |
| JP5132919B2 (en) * | 2006-11-17 | 2013-01-30 | 国立大学法人九州大学 | Silver recovery method |
| CN105274351A (en) * | 2015-10-12 | 2016-01-27 | 湖南金旺铋业股份有限公司 | Process for recycling high-purity gold from anode slime through organic reduction method |
-
2016
- 2016-08-17 CN CN201610675689.7A patent/CN106222421A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| JP4155177B2 (en) * | 2002-11-29 | 2008-09-24 | 三菱マテリアル株式会社 | Method for recovering silver from silver-lead-containing materials |
| JP5132919B2 (en) * | 2006-11-17 | 2013-01-30 | 国立大学法人九州大学 | Silver recovery method |
| CN101660057A (en) * | 2009-08-03 | 2010-03-03 | 招金矿业股份有限公司 | Wet method gold extraction process |
| CN105274351A (en) * | 2015-10-12 | 2016-01-27 | 湖南金旺铋业股份有限公司 | Process for recycling high-purity gold from anode slime through organic reduction method |
Non-Patent Citations (4)
| Title |
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| 《黄金生产工艺指南》编委会: "《黄金生产工艺指南》", 31 January 2000, 地质出版社 * |
| 张亦飞 等: "《现代黄金冶炼技术》", 30 September 2014, 冶金工业出版社 * |
| 张树科 等: "氯化金泥湿法冶炼工艺综述", 《现代矿业》 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319744A (en) * | 2017-07-31 | 2019-02-12 | 成都中建材光电材料有限公司 | A kind of preparation method of 4N tellurium |
| CN110306066A (en) * | 2019-07-22 | 2019-10-08 | 山东国大黄金股份有限公司 | A kind of multistage gold extracting method of the difficult tailing of gold containing arsenic |
| CN110306066B (en) * | 2019-07-22 | 2021-07-20 | 山东国大黄金股份有限公司 | Multistage gold extraction method for refractory arsenic-containing gold tailings |
| CN110724827A (en) * | 2019-10-23 | 2020-01-24 | 金川集团股份有限公司 | Method for enriching precious metals from sponge copper leaching residues |
| CN110842158A (en) * | 2019-11-12 | 2020-02-28 | 珠海格力绿色再生资源有限公司 | Smelting and casting method of sponge gold and application thereof |
| CN115058596A (en) * | 2022-06-06 | 2022-09-16 | 青海大柴旦矿业有限公司 | Efficient treatment and recovery method for smelting slag |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161214 |
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| RJ01 | Rejection of invention patent application after publication |