CN109082537A - A kind of roasting Gold Concentrate under Normal Pressure method of comprehensive utilization - Google Patents
A kind of roasting Gold Concentrate under Normal Pressure method of comprehensive utilization Download PDFInfo
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- CN109082537A CN109082537A CN201810759760.9A CN201810759760A CN109082537A CN 109082537 A CN109082537 A CN 109082537A CN 201810759760 A CN201810759760 A CN 201810759760A CN 109082537 A CN109082537 A CN 109082537A
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- normal pressure
- under normal
- concentrate under
- gold concentrate
- gold
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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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/37—Phosphates of heavy metals
- C01B25/375—Phosphates of heavy metals of iron
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/16—Halides of ammonium
- C01C1/164—Ammonium chloride
-
- 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
-
- 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
-
- 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 discloses a kind of roasting Gold Concentrate under Normal Pressure method of comprehensive utilization, comprising the following steps: golden removing, golden leaching are filtered, absorption, adsorption liquid post-processing.It is leaching agent using dilute hydrochloric acid, the effective gold removed in Gold Concentrate under Normal Pressure, filtering, add active carbon into filtrate, obtain gold loaded carbon and adsorption liquid: gold loaded carbon enters conventional desorption, refining procedure, and adsorption liquid obtains the precipitating such as ferric phosphate, copper sulfide using step-by-step precipitation method, filtering, add ammonium hydroxide into filtrate, obtains ammonium chloride product, entire technical process is simple, it is easy to operate, pollution-free, the rate of recovery of the effective extraction rate for improving gold and valuable metal reduces solid waste.
Description
Technical field
The present invention relates to technical field of wet metallurgy, and in particular to a kind of roasting Gold Concentrate under Normal Pressure method of comprehensive utilization.
Background technique
Since the 1990s, cyanidation gold-extracted technology is developed rapidly, carbon-in-pulp process, carbon-in-leach process, resin in pulp process
And the successful application of the cyanidings new process such as dump leaching method, so that cyaniding is held predominantly in current golden production relaying continuation of insurance
Position.But with the development of economy and society, cyaniding pollution on the environment more and more attracts people's attention, add
Cyaniding leaches gold mine to hardly possible, and the effect is unsatisfactory, and therefore, the new method for studying bridge without platform is imperative, meets social hair
The requirement of exhibition and scientific and technological progress.The main method of non cyanide process has at present: lime sulfur method, class cyanogen compound method, thio sulphur
Hydrochlorate method, biological agent method, organic nitrile method etc..
Patent CN201310142985.7 discloses a kind of modified lime-sulfur mixture and its application in gold-leaching technology: this changes
Property lime sulfur in include stabilizer calgon；Oxidant calper calcium peroxide and potassium ferricyanate；Additive plumbi nitras and solvable
Property bromide (such as sodium bromide, potassium bromide, calcium bromide substance), using the modified lime-sulfur mixture as gold lixivant, from containing gold mine
High efficiente callback gold in stone, aurin powder and gold-containing scrap, which is readily synthesized, and preparation cost is low, in preparation process
Nontoxic, gold-leaching technology process is simple, and it is fast to soak golden rate.
Patent CN201410560532.0 discloses a kind of Zassol and soaks golden method: to Gold Concentrate under Normal Pressure ore grinding, grinding fineness is-
400 mesh account for 85-95%；Then sizing mixing makes liquid consolidate mass ratio 2:1-5:1, and leaching agent CaO 4-8kg/t, NaCO is added3 1-
3kg/t, regulation system pH value soak golden agent Zassol 0.5-8 ‰ between 9-12, and extraction time is 4-18 hours, the method letter
Single, gold leaching rate is high, and environmental pollution is small, and dosing is small, and equipment corrosion impact is small, it is low to require, at low cost, answers with industry
Use prospect.
Patent CN201611257286.7 discloses a kind of new process of Leaching of Gold Using Thiosulfate: soaking in thiosulfate
The addition of ferric sulfate and sulfosalicylic acid or sulfosalicylic acid sodium salt substituted sulfuric acid copper and ammonium hydroxide is added in gold mine slurry, significantly reduces sulphur
The consumption of thiosulfate eliminates the use of ammonium hydroxide, avoids NH3Threat to environment.
Although existing gold extracting method improves very much, environmental pollution reduces, and still has following deficiency: (1) only examining
The Selectively leaching for considering gold, does not comprehensively consider the recycling and utilization of iron and other valuable metals in gold mine, causes to generate more
Solid waste；(2) cannot effectively extract be wrapped in pyrite, chalcopyrite, zincblende, among galena or preservation is above-mentioned
Gold between mineral and quartz-crystal gap can only extract part free gold.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of the prior art, provides a kind of at low cost, operation letter
A kind of single, environment friendly and pollution-free roasting Gold Concentrate under Normal Pressure method of comprehensive utilization.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
Design a kind of roasting Gold Concentrate under Normal Pressure method of comprehensive utilization, comprising the following steps:
(1) golden removing: leaching agent is mixed with roasting Gold Concentrate under Normal Pressure, and reaction temperature and mixing time is arranged, and is uniformly mixed, must be mixed
Solution A；
(2) golden leaching: Fe in detection architecture liquid phase3+Concentration: if being lower than 1.5mol/L, chlorination is added into mixed solution A
Iron adjusts Fe3+Concentration；If Fe3+Concentration is more than or equal to 1.5mol/L, then uncomfortable；Temperature and reaction time are set, into system
Blowing air or purity oxygen measure the leaching rate of gold, obtain mixed solution B after reaction；
(3) filter: the resulting mixed solution B of filtration step (2) takes filtrate；
(4) adsorb: into step (3) resulting filtrate plus active carbon, active carbon are mixed with roasting Gold Concentrate under Normal Pressure, and cryogenic conditions are divided into
It sets the stirring and adsorbing time, filters, obtain gold loaded carbon and adsorption liquid, gold loaded carbon enters desorption, refining procedure, calculates the rate of recovery of gold；
(5) adsorption liquid post-processes: utilizing fractional precipitation method processing step (4) resulting adsorption liquid: ammonium hydroxide is added, described in adjusting
Adsorption liquid pH, according to PO4 3-Substance amount: Fe3+Amount=1:1 of substance add phosphate, reaction temperature and reaction time are set,
Ferric phosphate Precipitation filters, drying, testing product quality；Into filtrate according to S2-Substance amount: Cu2+The amount of substance with
Pb2+The amount of substance and=1:1 adds ammonium sulfide solid, filter；The processing industry ammonium hydroxide into filtrate again, obtains ammonium chloride product.
Wherein, preferred: in step (1), leaching agent is dilute hydrochloric acid, and dilute hydrochloric acid concentration is 3~6mol/L.
It is preferred: in step (1), leaching agent: roasting Gold Concentrate under Normal Pressure volume mass ratio=1.0~2.0:1.
Preferred: in step (1), reaction temperature is 80 ~ 120 °C, and mixing time is 0.5~1h.
Preferred: in step (2), temperature is 30~50 °C, and the reaction time is 1~2h.
It is preferred: in step (4), active carbon: roasting Gold Concentrate under Normal Pressure mass ratio=5~10:1000.
Preferred: in step (4), cryogenic temperature is not higher than 35 °C, and the stirring and adsorbing time is 1~3h.
Preferred: in step (5), adsorption liquid pH is adjusted to 1~2.5, and phosphate is diammonium hydrogen phosphate.
Preferred: in step (5), reaction temperature is 30~50 °C, and the reaction time is 0.5~1.0h.
Preferred: in step (5), drying temperature is 90~120 °C.
Compared with prior art, the beneficial technical effect of the present invention lies in:
1. the method for the present invention is simple, easy to operate, entire technical process has recovery utilization rate high, and the output value is high, free of contamination feature.
2. the present invention can make the brilliant gap being distributed between ore particle gold or intergranular gold, deposit using dilute hydrochloric acid leaching roasting Gold Concentrate under Normal Pressure
The effective leaching of backpack body gold for being the crack gold between microfracture of minerals and being present in inclusion enclave, the effective leaching for improving gold
Rate.
3. the present invention not only efficiently extracts Jin Hetie, the valuable metals such as copper, the lead in roasting Gold Concentrate under Normal Pressure are also recycled, have been mentioned
The high utilization rate of non-renewable mineral resources, while reducing the discharge amount of solid waste.
Detailed description of the invention
Fig. 1 is process flow chart.
Specific embodiment
Related instrument and equipment is routine instrument device unless otherwise instructed in the examples below；It is related
The raw material of industry is commercially available regular industrial raw material unless otherwise instructed；Related processing method, unless otherwise instructed,
It is conventional method.
Embodiment 1
By taking Xinjiang company roasts Gold Concentrate under Normal Pressure as an example, component: Fe:19.92%, Au:52.1g/t, S:1.61%, Cu:0.25%,
Pb:0.12%.
It weighs 10Kg roasting Gold Concentrate under Normal Pressure to be placed in 50L reaction kettle, it is 20L that volume, which is added, according to liquid-solid ratio 2:1(mL/g)
Dilute hydrochloric acid (concentration 6mol/L), stirring, is heated to 120 °C, isothermal reaction 1.0h；After reaction, Fe in measurement system3+,
Fe3+Concentration is 1.6mol/L, and temperature control is at 50 °C, blowing air, the reaction was continued 2h, is filtered, washing, leached mud can be used for building
Material, the leaching rate for measuring gold is 98.9%；100g active carbon is added into leachate, controls temperature at 35 °C hereinafter, stirring is inhaled
Attached 3h, filtering obtain gold loaded carbon and enter desorption and refining procedure, and the golden rate of recovery is 99.5%；The processing industry ammonium hydroxide tune into adsorption liquid
50 °C of temperature, 4.23Kg diammonium hydrogen phosphate, reaction time 1.0h, ferric phosphate Precipitation, filtering, at 120 ° is added in pH to 2.5
It is dried under C, through testing product quality, Fe%=29.24 meet HG/T 4701-2014 battery ferric phosphate standard；Again to filter
According to n(S in liquid2-): n(Cu2+ +Pb2+Ammonium sulfide solid is added in)=1.0, forms CuS, PbS precipitating, filtering；Add again to filtrate
Enter industrial ammonia, neutralizes and generate ammonium chloride product.
Embodiment 2
By taking Sichuan company roasts Gold Concentrate under Normal Pressure as an example, component: Fe:15.46%, Au:30.3g/t, S:1.12%, Cu:0.24%,
Pb:0.13%.
It weighs 10Kg roasting Gold Concentrate under Normal Pressure to be placed in 50L reaction kettle, volume, which is added, according to liquid-solid ratio 1.5:1(mL/g) is
15L dilute hydrochloric acid (concentration 4.5mol/L), stirring, is heated to 100 °C, isothermal reaction 0.75h；After reaction, system is measured
Middle Fe3+, Fe3+Concentration is 1.5mol/L, and temperature control is at 40 °C, blowing air, the reaction was continued 1.5h, is filtered, washing, leached mud
It can be used for construction material, the leaching rate for measuring gold is 98.8%；Into leachate be added 75g active carbon, control temperature 35 °C with
Under, stirring and adsorbing 2h, filtering obtains gold loaded carbon and enters desorption and refining procedure, and the golden rate of recovery is 99.3%；Add into adsorption liquid
Industrial ammonia tune pH to 1.8,40 °C of temperature, addition 2.98Kg diammonium hydrogen phosphate, reaction time 0.75h, ferric phosphate Precipitation,
Filtering, is dried, through testing product quality, Fe%=29.18 meet HG/T 4701-2014 battery ferric phosphate under 105 °C
Standard；Again into filtrate according to n(S2-): n(Cu2+ +Pb2+Ammonium sulfide solid is added in)=1.0, forms CuS, PbS precipitating, filtering；
Industrial ammonia is added to filtrate again, neutralizes and generates ammonium chloride product.
Embodiment 3
By taking company of Henan Lingbao City roasts Gold Concentrate under Normal Pressure as an example, component: Fe:12.35%, Au:8.0g/t, S:0.78%, Cu:
0.22%, Pb:0.15%.
It weighs 10Kg roasting Gold Concentrate under Normal Pressure to be placed in 50L reaction kettle, 10L dilute hydrochloric acid is added according to liquid-solid ratio 1:1(mL/g)
(concentration 3mol/L), stirring, is heated to 80 °C, isothermal reaction 0.5h；After reaction, Fe in measurement system3+, Fe3+Concentration
For 0.98mol/L, 0.843kg ferric trichloride tune Fe is added3+Concentration to 1.5mol/L, temperature is controlled at 30 °C, is passed through air, after
Continuous reaction 1h, is filtered, and washing, leached mud can be used for construction material, and the leaching rate for measuring gold is 98.6 %；It is added into leachate
50g active carbon controls temperature at 35 °C hereinafter, stirring and adsorbing 1h, and filtering obtains gold loaded carbon and enters desorption and refining procedure, golden
The rate of recovery is 99.1 %；30 °C of temperature, 1.98Kg diammonium hydrogen phosphate, reaction is added in the processing industry ammonium hydroxide tune pH to 1 into adsorption liquid
Time 0.5h, ferric phosphate Precipitation, filtering are dried, through testing product quality, Fe%=29.15, quality meets under 90 °C
HG/T4701-2014 battery ferric phosphate standard；Again into filtrate according to n(S2-): n(Cu2+ +Pb2+Ammonium sulfide is added in)=1.0
Solid forms CuS, PbS precipitating, filtering；Industrial ammonia is added into filtrate again, neutralizes and generates ammonium chloride product.
Embodiment 4
By taking Xinjiang company roasts Gold Concentrate under Normal Pressure as an example, component: Fe:19.92%, Au:52.1g/t, S:1.61%, Cu:0.25%,
Pb:0.12%.
Cymag does leaching agent, and for method with embodiment 1, the rate of recovery for calculating gold is 97.8%.
Embodiment 5
By taking Sichuan company roasts Gold Concentrate under Normal Pressure as an example, component: Fe:15.46%, Au:30.3g/t, S:1.12%, Cu:0.24%,
Pb:0.13%.
Cymag does leaching agent, and for method with embodiment 2, the rate of recovery for calculating gold is 97.7%.
Embodiment 6
By taking company of Henan Lingbao City roasts Gold Concentrate under Normal Pressure as an example, component: Fe:12.35%, Au:8.0g/t, S:0.78%, Cu:
0.22%, Pb:0.15%.
Cymag does leaching agent, and for method with embodiment 3, the rate of recovery for calculating gold is 97.5%.
The rate of recovery of the roasting Gold Concentrate under Normal Pressure gold of comparative example 1,2,3,4,5,6, as shown in the table:
Roast gold recovery contrast table in Gold Concentrate under Normal Pressure.
The rate of recovery contrast table of 1 gold medal of table
。
The numerical value from table is it follows that when the rate of recovery of gold is apparently higher than Cymag and does leaching agent when dilute hydrochloric acid does leaching agent
The rate of recovery of gold, i.e. dilute hydrochloric acid do leaching agent with good extraction effect, can make the brilliant gap being distributed between ore particle gold or intergranular
Golden, the crack gold being present between microfracture of minerals and the effective leaching of backpack body gold being present in inclusion enclave, effectively improve gold
The rate of recovery.
The present invention is described in detail above in conjunction with drawings and examples, still, those of skill in the art
Member is it is understood that without departing from the purpose of the present invention, can also carry out each design parameter in above-described embodiment
Change, forms multiple specific embodiments, is common variation range of the invention, is no longer described in detail one by one herein.
Claims (10)
1. a kind of roasting Gold Concentrate under Normal Pressure method of comprehensive utilization, it is characterised in that: the following steps are included:
(1) golden removing: leaching agent is mixed with roasting Gold Concentrate under Normal Pressure, and reaction temperature and mixing time is arranged, and is uniformly mixed, must be mixed
Solution A；
(2) golden leaching: Fe in detection architecture liquid phase3+Concentration: if being lower than 1.5mol/L, iron chloride being added into mixed solution A,
Adjust Fe3+Concentration；If Fe3+Concentration is more than or equal to 1.5mol/L, then uncomfortable；Temperature and reaction time are set, sky is led into system
Gas or purity oxygen obtain mixed solution B after reaction；
(3) it filters: filtering the resulting mixed solution B of the step (2), take filtrate；
(4) adsorb: into the step (3) resulting filtrate plus active carbon, active carbon are mixed with roasting Gold Concentrate under Normal Pressure, cryogenic conditions
Lower setting stirring and adsorbing time, filtering obtain gold loaded carbon and adsorption liquid, gold loaded carbon enters desorption, refining procedure；
(5) adsorption liquid post-processes: handling the resulting adsorption liquid of the step (4) using fractional precipitation method: ammonium hydroxide is added, adjust
The adsorption liquid pH, according to PO4 3-Substance amount: Fe3+Amount=1:1 of substance add phosphate, reaction temperature and reaction are set
Time, ferric phosphate Precipitation filter, drying；Into filtrate according to S2-Substance amount: Cu2+The amount and Pb of substance2+Substance
Amount and=1:1 adds ammonium sulfide solid, filter；The processing industry ammonium hydroxide into filtrate again, obtains ammonium chloride product.
2. roasting Gold Concentrate under Normal Pressure method of comprehensive utilization according to claim 1, it is characterised in that: in the step (1), institute
Stating leaching agent is dilute hydrochloric acid, and the dilute hydrochloric acid concentration is 3~6mol/L.
3. roasting Gold Concentrate under Normal Pressure method of comprehensive utilization according to claim 1, it is characterised in that: described in the step (1)
Leaching agent: roasting Gold Concentrate under Normal Pressure volume mass ratio=1.0~2.0:1.
4. roasting Gold Concentrate under Normal Pressure method of comprehensive utilization according to claim 1, it is characterised in that: described in the step (1)
Reaction temperature is 80~120 °C, and the mixing time is 0.5~1h.
5. roasting Gold Concentrate under Normal Pressure method of comprehensive utilization according to claim 1, it is characterised in that: described in the step (2)
Temperature is 30~50 °C, and the reaction time is 1~2h.
6. roasting Gold Concentrate under Normal Pressure method of comprehensive utilization according to claim 1, it is characterised in that: described in the step (4)
Active carbon: roasting Gold Concentrate under Normal Pressure mass ratio=5~10:1000.
7. roasting Gold Concentrate under Normal Pressure method of comprehensive utilization according to claim 1, it is characterised in that: described in the step (4)
Cryogenic temperature is not higher than 35 °C, and the stirring and adsorbing time is 1~3h.
8. roasting Gold Concentrate under Normal Pressure method of comprehensive utilization according to claim 1, it is characterised in that: described in the step (5)
Adsorption liquid pH is adjusted to 1~2.5, and the phosphate is diammonium hydrogen phosphate.
9. roasting Gold Concentrate under Normal Pressure method of comprehensive utilization according to claim 1, it is characterised in that: described in the step (5)
Reaction temperature is 30~50 °C, and the reaction time is 0.5~1.0h.
10. roasting Gold Concentrate under Normal Pressure method of comprehensive utilization according to claim 1, it is characterised in that: in the step (5), institute
Stating drying temperature is 90~120 °C.
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| CN110819815A (en) * | 2019-12-03 | 2020-02-21 | 山东国大黄金股份有限公司 | Waste acid purification method |
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| CN110819815A (en) * | 2019-12-03 | 2020-02-21 | 山东国大黄金股份有限公司 | Waste acid purification method |
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