CN101338371B - Salt-dipping and replacing process for associated metallic lead in gold concentrate - Google Patents
Salt-dipping and replacing process for associated metallic lead in gold concentrate Download PDFInfo
- Publication number
- CN101338371B CN101338371B CN2008101405527A CN200810140552A CN101338371B CN 101338371 B CN101338371 B CN 101338371B CN 2008101405527 A CN2008101405527 A CN 2008101405527A CN 200810140552 A CN200810140552 A CN 200810140552A CN 101338371 B CN101338371 B CN 101338371B
- Authority
- CN
- China
- Prior art keywords
- lead
- plumbous
- ore
- salt
- liquid
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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 the field of wet metallurgy and relates to a brining substitution recycling technique for an accompanied metal lead in a gold concentrate ore. Firstly industrial salt is a preparing liquor of a chlorinating agent; industrial vitriol is used to adjust a chlorine salt liquor to be weakly acidic; the calcine extracted by acid is used as the material to be prepared into the slurry of ore with the chlorine salt liquor according to a certain solid-liquor ratio; an extraction stirring state is maintained under a certain temperature and a normal pressure; then iron powder of a plurality of grades is uniformly added to carry out substitution recycling on the lead in the pregnant liquor of lead. The method has a simple flow and high operability, is organically combined with a boiling roasting-carburizing technical flow and can achieve the comprehensive recycling of a plurality of elements in the gold concentrate ore. The material is easily obtained; the industrial application capacity is high; besides, the technique of the invention has a better application prospect.
Description
Technical field
The invention belongs to and belong to field of metallurgy, relate to the comprehensive recovery technology of metal, the salt that is specifically related to associated metallic lead soaks and replacement technique.
Background technology
Area, the little Qinling Mountains, Lingbao City, Henan gold mine is one of bigger gold deposit belt of China, and wherein non-ferrous metal such as copper, lead content is higher.Because Cu, Pb separation difficulty make in a large number to be underutilized since such resource long-terms always.At present, many dressing-works all adopt single floatation process that the type gold mine is handled, and it is generally higher to contain the Pb amount in the gold ore that is obtained, and refuse purchase because of the smeltery can't smelt, caused the serious waste of Mineral resources, the ore that abandons has also seriously polluted ecotope.These low-grade lead resources still are in idle and waste state.Area, Lingbao City lead ore is possessed 54334 tons of metal reserves, ore amount 1843 kilotons, and with the surrounding area that Lingbao City joins, lead ore retained reserve ore amount 1200 kilotons.Therefore characteristics of forming according to associated metal in this region Gold Ore comprehensively reclaim metallic lead in the gold ore and to have tremendous economic and social benefit.
From the Mineral Resources in China general status, a principal feature is that big ore deposit is few, and little ore deposit is many; Rich ore is few, and lean ore is many; Another principal feature is exactly that many metals symbiosis mineral account for the overwhelming majority.Therefore carry out the fundamental realities of the country that the comprehensive recovery of many metals also meets Mineral Resources in China.
The main pyrogenic process of present plumbous smelting technology, but pyrometallurgical smelting of lead technology exists two big weak points.At first, bad adaptability only is adapted to the more single lead ore concentrate of higher-grade and composition, does not fit into the low-grade complex ore deposit.Secondly, can produce sulfur dioxide gas and leaded flue dust and leaded volatile compound in the plumbous process of refining, topsoil is serious.Plumbous the comparing with traditional pyrometallurgical smelting of lead of wet method refining all has tangible advantage at aspect the adaptability and environmental protection aspect, thereby, wet method is refined the close attention that plumbous technology has been subjected to numerous investigators, and wet method is refined plumbous technology and mainly comprised following a few class: 1. iron(ic) chloride salt solution lixiviation process; 2. chlorine gas selecting lixiviation process; 3. iron trichloride leaches---membrane electrolysis; 4. carbonating conversion method; 5. the oxidation in the silicofluoric acid medium is leached.Wherein the villaumite lixiviation process is to reclaim one of more promising methods of metal such as lead, silver, but above wet processing is all at lead ore concentrate or lead anode slurry (plumbous grade 〉=8%).
The leaching recovery test of metallic lead adopts HCl-NaCl, FeCl more in the gold ore
3-NaCl villaumite leaches system, and this system is used FeCl always
3, strong oxidizing property reagent such as HCl and strong volatility chemical reagent, cost height not only, and cause environmental pollution easily.Because the restriction of gold concentrate smelting processing condition adopts fluidized bed roasting-cyanidation technology to smelt gold mine, plumbous grade＜10% in the gold ore of use is not seen at present and is adopted HCl-NaCl, FeCl in fluidized bed roasting-cyanidation technology
3-NaCl villaumite leaches system lead metal is reclaimed., present fluidized bed roasting-cyanidation technology and villaumite leaching system recovery lead metal technology are improved for this reason,, reduce environmental pollution improving metal smelting quality grade, significant, especially Lingbao City, Henan gold mine smelting industry is had more realistic meaning.
Summary of the invention
The object of the invention is that villaumite leaching system is reclaimed lead metal technology to be improved, and is applied to fluidized bed roasting-cyanidation technology and smelts in the gold ore technology, for this reason, provides the salt of associated metallic lead in a kind of gold ore to soak and replacing process.
For realizing the object of the invention, technical scheme is as follows: at first with industrial NaCl preparation chloride solution, make [Cl
-] at 4.27mol/L-5.13mol/L, with H
2SO
4Regulate chloride solution pH=1～6, then acidleach calcining in fluidized bed roasting-cyanide circuit and slightly acidic chloride solution are prepared ore pulp according to 1: 2～1: 6 weight ratio of solid-liquid, 65～90 ℃ keep agitation leach state 2h under normal pressure; To leach the ore pulp filtered while hot and get plumbous your liquid, and keep 80～95 ℃ of plumbous your liquid, iron powder (150 orders-200 order) is evenly added in gradation under whipped state, keeps whipped state 2h-3h; Filter plumbous work in-process and plumbous displacement villaumite lean solution, with lead displacement villaumite lean solution the acidleach calcining is circulated and to leach and your liquid is replaced.
Principle is: the most compounds of the inorganic salt of metallic lead for slightly soluble and indissoluble, thereby adopt conventional leaching method to be difficult to reach separating of metallic lead and raw ore.Because the common-ion effcet lead chloride is insoluble in the chloride aqueous solution of sodium-chlor, but when chlorine ion concentration reaches certain numerical value in the solution lead chloride Yi Rong that becomes on the contrary, sodium-chlor plays the effect of solubilizing agent on the contrary at this moment, reacts as follows:
PbCl
2+2NaCl＝Na
2PbCl
4
In addition according to metal chloride character, the muriate of plumbous, silver, copper can be dissolved in the aqueous solution of sodium-chlor, and other metal chloride is then insoluble or solubleness is minimum, thereby in the villaumite leaching process, can reach separating of metallic lead and other metal.Plumbous main lead sulfate (PbSO in the gold ore acidleach calcining with indissoluble
4) the form existence, can form soluble complexes with sodium-chlor.Simultaneously in the gold ore argent some with Sulfuric acid disilver salt (Ag
2SO
4) form, recyclable part silver when villaumite leaches lead.
If chloride solution system acidity is low excessively, then Pb
2+Hydrolysis easily takes place generate Pb (OH)
2Precipitation, solution acidity conditioning agent commonly used is HCl, yet under hot conditions in the solution HCl volatilization easily takes place and lose, the severe operational environment of suitability for industrialized production causes environmental pollution simultaneously.Solution acidity is regulated the too high stripping that often causes other valuable element in the calcining in addition, increases the reagent consumption when lead reclaims in your liquid, this process using H
2SO
4Substitute HCl.
Its key problem in technology is: with Industrial Salt NaCl preparation chloride solution, make [Cl in the solution 1.
-] be 4.27mol/L-5.13mol/L; 2. with industrial H
2SO
4Regulate chloride solution pH=1～6; 3. acidleach calcining and chloride solution are prepared ore pulp according to 1: 2～1: 6 solid-liquid weight ratio, stir, extraction temperature is 65～90 ℃ under the normal pressure, and chloride solution is fully contacted with the acidleach calcining; 3. keep 80～95 ℃ of your liquid temps, the even multistage interpolation of iron powder is replaced; 4. the displacement lean solution can circulate and leach and displacement, does not influence next leaching yield and plumbous work in-process grade.
The invention has the advantages that: 1 and FeCl
3-NaCl-HCl, HCl-NaCl system are compared, and the present invention adopts slightly acidic villaumite infusion solution system, casts out FeCl commonly used
3, strong oxidizing property reagent such as HCl and strong volatility chemical reagent, adopt NaCl, H cheap and easy to get
2SO
4Form villaumite and leach system, reaction conditions gentleness, operating environment are good; 2. low to the plumbous grade of ingredient requirement, plumbous grade is minimum to be reached about 3%, plumbous leaching yield 〉=96%, lead recovery 〉=94%; 3, iron replacement not only can reclaim the lead in plumbous your liquid but also can reach the effect of solution purification, and the displacement lean solution can be recycled, and flow process is simple, and condition is easy to control, and industry is workable; 4, organically combine with fluidized bed roasting-cyanidation technology flow process, can reach the comprehensive recovery of multielement in the gold ore, along with the leaching of the lead compound of part parcel gold in the gold ore, the more conventional cyaniding leaching yield of the cyaniding leaching yield height of gold.
Description of drawings
Fig. 1 is former fluidized bed roasting-cyanidation technology flow process;
Fig. 2 soaks for the salt of metallic lead of the present invention and replace comprehensive many smithcrafts of recovery flow process;
Embodiment
For the present invention is illustrated better, as follows for embodiment:
Embodiment
With industrial table salt preparation chloride aqueous solution, make [Cl
-]=4.27mol/L regulates chloride solution pH=4 with industrial sulphuric acid then.Take by weighing acidleach calcining 200g, its chemical composition analysis is as shown in the table:
Acidleach calcining and slightly acidic chloride aqueous solution are prepared ore pulp, normal pressure, 75 ℃ of extraction temperatures, extraction time 2h, mechanical stirring according to 1: 5 weight ratio of solid-liquid.To leach the ore pulp heat filtering, salt soaks slag oven dry and weighs and analyze.Soak the heavy 170g of slag after the oven dry, slag rate 85%.It is as follows to soak slag analytical test result:
Pb leaching yield=96.18% in the calcining, silver leaching rate=62.60%.
Heat filtering filtrate is heated to 90 ℃, gets iron powder (150 order) and divide three interpolations, stir 2h, displace lead metal.The filter analysis precipitation, analytical results is as follows:
Displacement lean solution analysis: [Pb
2+]=0.16g/L, rate of displacement 98%.
Plumbous lean solution leaches the acidleach calcining as circulate soln behind the iron replacement, and plumbous your liquid carries out plumbous displacement and reclaims.This villaumite leaches liquid circulation does not influence the leaching replacement result 15 times, plumbous leaching yield 〉=96%; Villaumite leaching liquid circulation does not have influence on and displaces plumbous work in-process grade (〉=68%) in addition.
Claims (1)
1. the salt of associated metallic lead soaks and replacing process in the gold ore, it is characterized in that, at first with industrial NaCl preparation chloride solution, makes [Cl
-] at 4.27mol/L, with industrial H
2SO
4Regulate chloride solution pH=4～6; Then acidleach calcining in fluidized bed roasting-cyanide circuit and slightly acidic chloride solution are mixed with ore pulp according to 1: 2～1: 6 weight ratio of solid-liquid, under normal pressure, 75～90 ℃ keep agitation leach state 2h; To leach the ore pulp filtered while hot and get plumbous your liquid, and keep 80～95 ℃ of plumbous your liquid, iron powder is evenly added in gradation under whipped state, keeps whipped state 2h-3h; Filter to such an extent that plumbous work in-process are replaced the villaumite lean solution with lead; Plumbous displacement villaumite lean solution recycles; The iron powder addition is 1.2～2.1 times of the theoretical replacement amount of lead ion in plumbous your liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101405527A CN101338371B (en) | 2008-07-11 | 2008-07-11 | Salt-dipping and replacing process for associated metallic lead in gold concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101405527A CN101338371B (en) | 2008-07-11 | 2008-07-11 | Salt-dipping and replacing process for associated metallic lead in gold concentrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101338371A CN101338371A (en) | 2009-01-07 |
| CN101338371B true CN101338371B (en) | 2010-08-11 |
Family
ID=40212542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101405527A Expired - Fee Related CN101338371B (en) | 2008-07-11 | 2008-07-11 | Salt-dipping and replacing process for associated metallic lead in gold concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101338371B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555550B (en) * | 2009-05-22 | 2011-02-16 | 北京科技大学 | Method for recycling lead-tin in silver separating residue of copper anode slime of circuit board |
-
2008
- 2008-07-11 CN CN2008101405527A patent/CN101338371B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101338371A (en) | 2009-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Dutrizac | The leaching of sulphide minerals in chloride media | |
| Urosevic et al. | Recovery of copper from copper slag and copper slag flotation tailings by oxidative leaching | |
| CN101508426B (en) | Method for separating tellurium from tellurium slag | |
| CN106868307B (en) | A kind of comprehensive utilization process of pyrite cinder arsenic removal enrichment gold and silver | |
| CN106048217B (en) | The comprehensive reutilization method of oxide powder and zinc | |
| CN103773967B (en) | The method of recover silver, copper and zinc from steel works sintering dust | |
| CN109621276A (en) | A kind of method that richness iron copper ashes handles arsenic in nonferrous smelting waste acid | |
| Antuñano et al. | Hydrometallurgical processes for Waelz oxide valorisation–An overview | |
| CN102268537A (en) | Method for extracting cobalt and nickel from laterite-nickel ore | |
| CN102191391A (en) | Method for extracting germanium from high-impurity low-grade complex zinc oxide powder | |
| Qin et al. | Simulated small-scale pilot plant heap leaching of low-grade oxide zinc ore with integrated selective extraction of zinc | |
| CN107746957A (en) | A kind of method that rare precious metal is reclaimed in the copper leached solution from copper anode mud | |
| CN102676805B (en) | Low grade zinc concentrate associated lead and silver recovery process | |
| CN102127653A (en) | Process for extracting gold by modified pressure oxidation-cyaniding | |
| CN102816931A (en) | Method for recovering copper and iron from copper-containing acid wastewater and producing gypsum | |
| CN101328539A (en) | Oxidation oven ash hydrometallurgical leaching process | |
| CN101215633B (en) | Integrated utilization technique for multi-metal ore containing gold and silver by chlorine carrier chlorination method | |
| CN106834720A (en) | A kind of arsenic-containing smoke dust integrated treatment and the method for the solid arsenic mineral of regulation and control growth method synthesis | |
| CN106957965B (en) | A kind of preparation method of iron oxide product | |
| CN105110300B (en) | The method that a kind of compound manganese ore of Containing Sulfur manganese extracts manganese and sulphur | |
| CN108624910A (en) | A kind of zinc Whote-wet method smelting process method of energy-saving and emission-reduction | |
| Tian et al. | Stepwise recovery of Ni, Cu, Zn, and Cr: A green route to resourceful disposal of electroplating sludge | |
| CN102560102A (en) | Method for leaching nickel and molybdenum from nickel-molybdenum ores by catalytic oxidation | |
| CN107663586A (en) | Method for recovering valuable metals from dust washing waste liquid generated in copper-nickel smelting | |
| CN106893862A (en) | A kind of processing method of zinc leaching residue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20120711 |