CN105441690A - Method for extracting gold from material liquid with high gold content - Google Patents
Method for extracting gold from material liquid with high gold content Download PDFInfo
- Publication number
- CN105441690A CN105441690A CN201510797459.3A CN201510797459A CN105441690A CN 105441690 A CN105441690 A CN 105441690A CN 201510797459 A CN201510797459 A CN 201510797459A CN 105441690 A CN105441690 A CN 105441690A
- Authority
- CN
- China
- Prior art keywords
- gold
- solution
- bronze
- feed liquid
- extraction
- 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.)
- Pending
Links
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
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a method for extracting gold from material liquid with the high gold content. The method comprises the following steps that first, the pH value of a solution is regulated; second, the solution is appropriately heated; third, acid is added into the solution for filtering and separating; fourth, primary coarse gold powder purification is conducted; fifth, the remaining solution is subjected to acidity regulating and extraction; sixth, reverse extraction solid-liquid separation is conducted. Furthermore, a reducing agent adopted in the sixth step is oxalic acid; furthermore, the reducing agent adopted in the sixth step is sodium sulfite; furthermore, zinc powder is added into the remaining tail solution in the sixth step, and platinum group metal can be displaced; furthermore, the method is suitable for waste gold electrolyte and gold chloroazotic acid dissolved solutions.
Description
Technical field
The present invention relates to technical field of wet metallurgy, specifically a kind of method extracting gold from the feed liquid of high Gold Content.
Background technology
Gold is a kind of important precious metal, because of economic worth and unique physicochemical property such as high temperature resistant, corrosion-resistant of its costliness, and plays important effect in modern economy and industrial production.At present, the production method of gold mainly contains fire refining process, electrolytic process, extraction process and chemical method.Fire refining process raw material is the various solid materialss containing gold, and this method material strong adaptability, equipment are simple, cost is lower, but labour intensity is large, environment is poor, product purity is low, direct yield is low; Electrolytic process raw material is mainly solids crude gold goods, and this method output product purity is high, cost is low, cleanliness of operation, without obnoxious flavour, but the production cycle is grown, direct yield is lower, let funds lie idle; Extraction process is suitable for process low levels gold feed liquid, and operational condition is good, and direct yield is high, but is unsuitable for the material directly processing high-content; Chemical method is with short production cycle, direct yield is high, equipment is simple, material adaptability is comparatively strong, but the golden foreign matter content that primary treatment obtains is higher, and direct yield is difficult to ensure.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method extracting gold from the feed liquid of high Gold Content, to solve the problem of prior art.
The technical scheme of technical solution problem of the present invention is: a kind of method extracting gold from the feed liquid of high Gold Content, described method comprises the steps.
The first step, reconciles the pH value of solution: by adding the sodium hydroxide solution of 40%, the pH value of solution be adjusted between 1 ~ 2.5.
Second step, mildly heating solution: by between solution warms to 70 ~ 80 DEG C.
3rd step, acid adding filtering separation: add appropriate oxalic acid in the solution of heating, the oxalic acid amount added is 1 ~ 1.5 times that can make to precipitate in solution no longer variable quantity; Add complete reaction filtering separation after 1 ~ 2 hour, be precipitated as once thick bronze and gold-containing solution.
4th step, once thick bronze is purified: the once thick bronze and concentration that filter gained are 20% ~ 30% nitric acid reaction and are filtered, is boiled by the material deionized water filtering gained and wash 24 ~ 48 hours, obtain the bronze of 99.99%.
5th step, remaining solution acidity is reconciled, extraction: reconcile acidity to the 1 ~ 3mol/L of remaining solution in the 3rd step operation with hydrochloric acid till, re-uses dibutyl carbitol (DBC) extraction gold element wherein.
6th step, reextraction solid-liquid separation: add reductive agent in the dibutyl carbitol (DBC) of the 5th step operation gained, after precipitating no longer change in solution, filtering separation, obtains bronze and the tail washings of 99.99%.
Furthermore, described in the 6th step, reductive agent is oxalic acid.
Furthermore, described in the 6th step, reductive agent is S-WAT.
Furthermore, add zinc powder in tail washings remaining in described 6th step, can platinum metals be displaced.
Furthermore, described method is applicable to gold electrolyte, golden aqua regia dissolution liquid.
Beneficial effect of the present invention is: the principle of the inventive method is the reductibility utilizing oxalic acid, under certain pH value and certain temperature, the part gold in high content gold feed liquid is reduced to once thick bronze.Once thick bronze certain density nitric acid and deionized water carry out boiling washing, and finally obtain the qualified bronze of 99.99%.Still containing part gold in filtrate once after reduction, and dibutyl carbitol (DBC) extraction to low levels gold has, and extracting power is strong, selectivity good, stability advantages of higher, therefore adopts it to extract the gold once reduced in the filtrate of rear generation.After back extraction is carried out to extraction liquid, the qualified bronze of output 99.99%.Raffinate zinc dust precipitation, to reclaim platinum metals wherein.Few based on above-mentioned advantage this method reagent dosage known, the cost of material is low, flow process is simple, yield reaches more than 99%; Equipment used is simple, floor space is little, one-time investment is few; This method adaptability to raw material is strong, is particularly suited for the feed liquid processing high content gold.
Accompanying drawing explanation
Fig. 1 is present invention process schema.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment 1.
The first step, reconciles the pH value of solution: choose 1L Gold electrolysis liquid, as raw material, add the sodium hydroxide solution 620g of 40% wherein, adjustment pH to 1.5.
Second step, mildly heating solution: by solution warms to 70 DEG C.
3rd step, acid adding filtering separation: add oxalic acid 115g in the solution of heating, react after 1 hour and filters, and is precipitated as once slightly bronze and gold-containing solution.
4th step, once thick bronze is purified: the thick bronze of gained through 20% nitric acid boil wash 24 hours after obtain 99.99% bronze 263.6g.
5th step, remaining solution acidity is reconciled, extraction: utilize hydrochloric acid to reconcile the acidity of remaining solution in the 3rd step operation to 1mol/L, re-use dibutyl carbitol (DBC) extraction gold element wherein.
6th step, reextraction solid-liquid separation: add reductive agent oxalic acid in the dibutyl carbitol (DBC) of the 5th step operation gained, after precipitating no longer change in solution, filtering separation, obtains bronze 11.75g and the tail washings of 99.99%.
7th step, tail washings process: add zinc powder in described tail washings, can displace platinum metals.
Overall reduction and DBC extraction process, the yield of gold is 99.63%.
Embodiment 2.
The first step, reconciles the pH value of solution: choose 100L gold aqua regia dissolution liquid, as raw material, add the sodium hydroxide solution 65.7L of 40% wherein, adjustment pH to 1.5.
Second step, mildly heating solution: by solution warms to 80 DEG C.
3rd step, acid adding filtering separation: add oxalic acid 12.1kg in the solution of heating, reacts after 2 hours and filters.
4th step, once thick bronze is purified: the thick bronze of gained through 30% nitric acid boil wash 48 hours after obtain 99.99% bronze 26397g.
5th step, remaining solution acidity is reconciled, extraction: utilize hydrochloric acid to reconcile the acidity of remaining solution in the 3rd step operation to 3mol/L, re-use dibutyl carbitol (DBC) extraction gold element wherein.
6th step, reextraction solid-liquid separation: add reductive agent S-WAT in the dibutyl carbitol (DBC) of the 5th step operation gained, after precipitating no longer change in solution, filtering separation, obtains bronze 1265g and the tail washings of 99.63%.
7th step, tail washings process: add zinc powder in described tail washings, can displace platinum metals.
Overall reduction and DBC extraction process, the yield of gold is 99.42%.
Embodiment 3.
The first step, reconciles the pH value of solution: choose 10L gold aqua regia dissolution liquid, as raw material, add the sodium hydroxide solution 6.3L of 40% wherein, adjustment pH to 1.5.
Second step, mildly heating solution: by solution warms to 80 DEG C.
3rd step, acid adding filtering separation: add oxalic acid 1.32kg in the solution of heating, reacts after 2 hours and filters.
4th step, once thick bronze is purified: the thick bronze of gained through 30% nitric acid boil wash 48 hours after obtain 99.99% bronze 1567.6g.
5th step, remaining solution acidity is reconciled, extraction: utilize hydrochloric acid to reconcile the acidity of remaining solution in the 3rd step operation to 1mol/L, re-use dibutyl carbitol dibutyl carbitol (DBC) extraction gold element wherein.
6th step, reextraction solid-liquid separation: add reductive agent S-WAT in the DBC of the 5th step operation gained, after precipitating no longer change in solution, filtering separation, obtains bronze 105.3g and the tail washings of 99.63%.
7th step, tail washings process: add zinc powder in described tail washings, can displace platinum metals.
Overall reduction and DBC extraction process, the yield of gold is 99.33%.
Claims (5)
1. from the feed liquid of high Gold Content, extracting a method for gold, it is characterized in that: described method comprises the steps: the first step, reconciling the pH value of solution: by adding the sodium hydroxide solution of 40%, be adjusted between 1 ~ 2.5 by the pH value of solution;
Second step, mildly heating solution: by between solution warms to 70 ~ 80 DEG C;
3rd step, acid adding filtering separation: add appropriate oxalic acid in the solution of heating, the oxalic acid amount added is 1 ~ 1.5 times that can make to precipitate in solution no longer noticeable change amount, adds complete isothermal reaction filtering separation after 1 ~ 2 hour, is precipitated as once thick bronze and gold-containing solution;
4th step, once thick bronze is purified: the once thick bronze and concentration that filter gained are 20% ~ 30% nitric acid reaction and are filtered, is boiled by the material deionized water filtering gained and wash 24 ~ 48 hours, obtain the bronze of 99.99%;
5th step, remaining solution acidity is reconciled, extraction: till in the 3rd step operation, remaining solution adopts hydrochloric acid adjustment acidity to 1 ~ 3mol/L, re-uses dibutyl carbitol (DBC) extraction gold element wherein;
6th step, reextraction solid-liquid separation: add reductive agent in the dibutyl carbitol (DBC) of the 5th step operation gained, after precipitating no longer change in solution, filtering separation, obtains bronze and the tail washings of 99.99%.
2. a kind of method extracting gold from the feed liquid of high Gold Content according to claim 1, is characterized in that: described reductive agent is oxalic acid.
3. a kind of method extracting gold from the feed liquid of high Gold Content according to claim 1, is characterized in that: described reductive agent is S-WAT.
4. a kind of method extracting gold from the feed liquid of high Gold Content according to Claims 2 or 3, is characterized in that: add zinc powder in tail washings remaining in described 6th step, can displace platinum metals.
5. a kind of method extracting gold from the feed liquid of high Gold Content according to claim 4, is characterized in that: described method is applicable to gold electrolyte, golden aqua regia dissolution liquid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510797459.3A CN105441690A (en) | 2015-11-18 | 2015-11-18 | Method for extracting gold from material liquid with high gold content |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510797459.3A CN105441690A (en) | 2015-11-18 | 2015-11-18 | Method for extracting gold from material liquid with high gold content |
Publications (1)
Publication Number | Publication Date |
---|---|
CN105441690A true CN105441690A (en) | 2016-03-30 |
Family
ID=55552312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510797459.3A Pending CN105441690A (en) | 2015-11-18 | 2015-11-18 | Method for extracting gold from material liquid with high gold content |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105441690A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110106354A (en) * | 2019-05-08 | 2019-08-09 | 广西大学 | A method of extracting gold from useless circuit board |
CN112662885A (en) * | 2021-01-07 | 2021-04-16 | 广州云伊科技有限公司 | Device for extracting gold from batched waste memory cards |
RU2753352C1 (en) * | 2021-02-15 | 2021-08-13 | Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" (ОАО "Красцветмет") | Method for recovering gold from solution containing impurities of platinum and base metals |
RU2772003C1 (en) * | 2020-12-29 | 2022-05-16 | Федеральное государственное бюджетное образовательное учреждение высшего образования «МИРЭА - Российский технологический университет» | Method for producing a noble metal concentrate |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101985691A (en) * | 2010-12-01 | 2011-03-16 | 金川集团有限公司 | Method for preparing high-purity gold |
US20120234138A1 (en) * | 2011-03-18 | 2012-09-20 | Jx Nippon Mining & Metals Corporation | Method of recovering gold from dilute gold solution |
CN103074492A (en) * | 2013-01-24 | 2013-05-01 | 贵研资源(易门)有限公司 | Method for separating and purifying gold from noble metal solution |
WO2014062289A1 (en) * | 2012-10-19 | 2014-04-24 | Kennecott Utah Copper Llc | Process for the recovery of gold form anode slimes |
CN103757246A (en) * | 2014-01-02 | 2014-04-30 | 紫金矿业集团股份有限公司 | Method for producing high-purity gold |
CN104480322A (en) * | 2014-12-07 | 2015-04-01 | 金川集团股份有限公司 | Method for extracting gold and palladium from silver anode slime |
JP2015105413A (en) * | 2013-11-29 | 2015-06-08 | 住友金属鉱山株式会社 | Method for manufacturing gold powder with high bulk density |
-
2015
- 2015-11-18 CN CN201510797459.3A patent/CN105441690A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101985691A (en) * | 2010-12-01 | 2011-03-16 | 金川集团有限公司 | Method for preparing high-purity gold |
US20120234138A1 (en) * | 2011-03-18 | 2012-09-20 | Jx Nippon Mining & Metals Corporation | Method of recovering gold from dilute gold solution |
WO2014062289A1 (en) * | 2012-10-19 | 2014-04-24 | Kennecott Utah Copper Llc | Process for the recovery of gold form anode slimes |
CN103074492A (en) * | 2013-01-24 | 2013-05-01 | 贵研资源(易门)有限公司 | Method for separating and purifying gold from noble metal solution |
JP2015105413A (en) * | 2013-11-29 | 2015-06-08 | 住友金属鉱山株式会社 | Method for manufacturing gold powder with high bulk density |
CN103757246A (en) * | 2014-01-02 | 2014-04-30 | 紫金矿业集团股份有限公司 | Method for producing high-purity gold |
CN104480322A (en) * | 2014-12-07 | 2015-04-01 | 金川集团股份有限公司 | Method for extracting gold and palladium from silver anode slime |
Non-Patent Citations (2)
Title |
---|
朱建良等: "从铅阳极泥中回收有价金属新工艺", 《南京工业大学学报(自然科学版)》 * |
长沙矿冶研究院等: "二丁基卡必醇萃取法提金扩大试验和试生产的工艺研究", 《矿冶工程》 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110106354A (en) * | 2019-05-08 | 2019-08-09 | 广西大学 | A method of extracting gold from useless circuit board |
CN110106354B (en) * | 2019-05-08 | 2020-11-03 | 广西大学 | Method for extracting gold from waste circuit board |
RU2772003C1 (en) * | 2020-12-29 | 2022-05-16 | Федеральное государственное бюджетное образовательное учреждение высшего образования «МИРЭА - Российский технологический университет» | Method for producing a noble metal concentrate |
CN112662885A (en) * | 2021-01-07 | 2021-04-16 | 广州云伊科技有限公司 | Device for extracting gold from batched waste memory cards |
CN112662885B (en) * | 2021-01-07 | 2022-07-01 | 深圳还珠科技有限公司 | Device for extracting gold from batched waste memory cards |
RU2787321C2 (en) * | 2021-02-03 | 2023-01-09 | Публичное акционерное общество "Горно-металлургическая компания "Норильский никель" | Method for purification of platinum-palladium chloride solutions from gold, selenium, tellurium, and impurities of base metals |
RU2753352C1 (en) * | 2021-02-15 | 2021-08-13 | Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" (ОАО "Красцветмет") | Method for recovering gold from solution containing impurities of platinum and base metals |
WO2022173335A1 (en) * | 2021-02-15 | 2022-08-18 | Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н.Гулидова" (ОАО "Красцветмет") | Method for recovering gold from a solution |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100591783C (en) | Method for recovering zinc and lead from waste electrolytic anode mud | |
CN103757421B (en) | The extracting method of rare precious metal in platinum palladium mud | |
CN101538646A (en) | Process method for producing copper sulfate by intensified leaching of copper-containing materials | |
CN102676837A (en) | Method for recycling palladium from silver electrolyte by using dimethylglyoxime | |
CN101451190A (en) | Novel method for separating gold and silver from gold mud | |
CN105112670A (en) | Comprehensive recovery method for platinum and palladium in silver electrolyte | |
CN103937973B (en) | A kind of method of Organic-inorganic composite reducing pyrolusite | |
JP6011809B2 (en) | Method for producing gold powder with high bulk density | |
CN105441690A (en) | Method for extracting gold from material liquid with high gold content | |
CN104860358A (en) | High purity rhodium recovery purification method | |
CN102701263A (en) | Method for preparing copper sulfate in mode that stanniferous copper slag is leached in selective mode and free of evaporation | |
CN106834691A (en) | A kind of copper anode mud wet-treating comprehensive recycling process | |
CN107557580A (en) | Method for removing copper and cadmium by zinc hydrometallurgy purification | |
CN102206834A (en) | Method for directly producing electrolytic nickel by using low nickel matte | |
CN105648232A (en) | Method for refining gold by using I2 and KI | |
CN102925899A (en) | Method for refining copper chloride etching waste liquor | |
CN104032144B (en) | Method for separating and purifying precious metal from palladium-containing K gold | |
CN112760488A (en) | Separation method for iron in precious solution leached by automobile exhaust waste catalyst | |
CN102274978B (en) | Method for quickly wet-process refining non-standard coarse gold powder | |
CN107674976B (en) | A method of with cobalt and manganese in ammonia-ammonium hydrogen carbonate separation and recovery high manganese waste material of low cobalt | |
CN107604163A (en) | A kind of technique of no scorification processing electroplating sludge | |
CN114959274B (en) | Method for efficiently separating valuable elements in lead filter cake | |
CN114350971B (en) | Method for recovering rhodium from rhodium-containing ammonium chloroplatinate precipitation slag | |
WO2023097923A1 (en) | Low-cost reducing agent for selective precipitation of noble metal ions | |
JP2008088470A (en) | Method for recovering indium from indium-containing material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |