CN107779609A - A kind of biological arsenic removing method of arsenic-containing gold ore - Google Patents
A kind of biological arsenic removing method of arsenic-containing gold ore Download PDFInfo
- Publication number
- CN107779609A CN107779609A CN201610730893.4A CN201610730893A CN107779609A CN 107779609 A CN107779609 A CN 107779609A CN 201610730893 A CN201610730893 A CN 201610730893A CN 107779609 A CN107779609 A CN 107779609A
- Authority
- CN
- China
- Prior art keywords
- arsenic
- ore deposit
- ore
- muck
- heap
- 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
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
-
- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/18—Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
-
- 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
A kind of biological arsenic removing method of arsenic-containing gold ore, is carried out according to the following steps：（1）Sieved after arsenic-containing gold ore is crushed, be divided into granularity<6mm thin ore deposit and granularity is 6 ~ 25mm muck, and gold floatation concentrate is made in thin ore deposit fine grinding flotation；With waterglass spray muck is bonded in muck surface, acquisition；（2）Gold floatation concentrate is wrapped in muck surface；（3）Sulfuric acid progress acid treatment is sprayed after building heap；（4）By on bacterium solution spray to ore deposit heap, bacterium solution is oozed out Posterior circle from ore deposit heap bottom and utilized；（5）When arsenic-removing rate is more than 60%, dearsenification is completed.The method production cost of the present invention is low, and consuming little energy, dosing is few, and labor intensity is low, and technological process is simple, and equipment requirement is low, easy to implement, does not produce waste gas.
Description
Technical field
The present invention relates to a kind of method of biological oxidation pretreatment Refractory Au-ores, more particularly to a kind of biology of arsenic-containing gold ore
Arsenic removing method.
Background technology
Largely belong to low-grade, unmanageable resource in the gold mine Resource management in China, and arsenic-containing gold ore is a kind of
Typical Refractory Au-ores, due to gold in micro- or secondary micro- shape by pyrite and mispickel parcel, leaching needs to carry out ore before
Oxidation pre-treatment.Biological oxidation pretreatment Refractory Au-ores, golden leaching rate is high, environment-friendly；But the problem of due to production cost,
The economy that low-grade Refractory Au-ores are handled with tank leaching process is under suspicion.
Biological dump leaching technology is a kind of new technology for being combined biological oxidation technology with heap Leaching, is still at present
Step section, the dump leaching time is long, ore oxidation rate is low and follow-up gold leaching rate is low etc. in actual applications be present, using dump leaching
Method pre-processes arsenic-bearing refractory gold ore there is presently no cost-effective method, therefore it is pre- to develop a kind of quick, economic oxidation
The method for handling the low-grade Refractory Au-ores containing arsenic is current urgent problem.
The content of the invention
For existing low-grade treating refractory As-containing gold ore in problem present on preconditioning technique, the present invention provides one kind and contained
The biological arsenic removing method of arsenic gold mine.
The method of the present invention is carried out according to the following steps：
1st, sieved after arsenic-containing gold ore is crushed, be divided into granularity<6mm thin ore deposit and granularity is 6 ~ 25mm muck, by granularity<6mm
Thin ore deposit carry out fine grinding, then floating and enriching be made gold floatation concentrate；Uniformly sprayed on muck surface, obtained with water glass of binder
Muck is bonded, the dosage of waterglass is 75 ~ 150L/t mucks；
2nd, gold floatation concentrate is uniformly wrapped up with granulator and is bonded in muck surface, cladding ore deposit, gold floatation concentrate and bonding is made
The mass ratio of muck is 1:（2~4）；
3rd, cladding ore deposit is built into heap, acid treatment then is carried out to ore deposit heap spray sulfuric acid, the pH value of ore deposit heap is adjusted to 1.3 ~ 1.5；
4th, logarithmic phase, population density 10 will be grown into8~1010Cell/mL bacterium solution is sprayed onto ore deposit heap, makes bacterium in ore deposit heap
Internal flourish, using the sulfide in ore deposit heap as the growth energy, and make to be wrapped in golden exposed in sulfide；Wherein bacterium solution
Spray rate be 10 ~ 30L/m2H, bacterium solution are oozed out Posterior circle from ore deposit heap bottom and utilized；Bacterium in described bacterium solution is oxygen
Change the Mixed Microbes of ferrous Thiobacillus and the micro- spirillum of ferrous oxide；
5th, when the arsenic-removing rate of ore in ore deposit heap is more than 60%, stop spray bacterium solution, complete dearsenification.
The bacterium solution diafiltration that the material of above-mentioned completion life dearsenification is placed in 10 ~ 30 angel's ore deposit heaps is clean；Again ore deposit is washed with clear water
Heap, to pH=6 ~ 7 for washing efflux, then carry out ore grinding to the ore after washing with ball mill, the Task-size Controlling of ore after mill
In<0.075mm part accounts for more than the 80% of ore gross mass；Ore after ore grinding is subjected to Cyanide Leaching, golden leaching rate can
Up to more than 80%.
PH=1.2 ~ 2.0 for the bacteria leachate being percolated out from ore deposit heap bottom are controlled during above method spray bacterium solution, when
When bacteria leachate pH value exceedes this scope, add lime into bacteria leachate or sulfuric acid is adjusted to pH=1.2 ~ 2.0.
The essential element content of above-mentioned arsenic-containing gold ore is Au 1.6 ~ 1.8g/t, As 0.35 ~ 0.37%.
The essential element content of above-mentioned gold floatation concentrate is Au 16 ~ 18g/t, As 1.6 ~ 1.8%.
The present invention carries out biological dump leaching oxygen by the way that gold floatation concentrate cladding is bonded in outside low-level arsenic refractory gold ores stone
Change pretreatment, greatly improve the oxygenation efficiency of ore, low-grade treating refractory As-containing gold ore resource is fully utilized, improve
The rate of recovery of gold, and production cost is low, and consuming little energy, dosing is few, and labor intensity is low, technological process is simple, if
It is standby to require low, it is easy to implement, do not produce waste gas.
Embodiment
In the embodiment of the present invention spray bacterium solution during control be percolated out from ore deposit heap bottom bacteria leachate pH=1.2 ~
2.0, when bacteria leachate pH value exceedes this scope, added into bacteria leachate lime or sulfuric acid adjust to pH=1.2 ~
2.0。
The essential element content of arsenic-containing gold ore is Au 1.6 ~ 1.8g/t, As 0.35 ~ 0.37% in the embodiment of the present invention.
The essential element content of gold floatation concentrate is Au 16 ~ 18g/t, As 1.6 ~ 1.8% in the embodiment of the present invention.
Embodiment 1
Sieved after arsenic-containing gold ore is crushed, be divided into granularity<6mm thin ore deposit and granularity is 6 ~ 25mm muck, by granularity<6mm's
Thin ore deposit carries out fine grinding, then gold floatation concentrate is made in floating and enriching；Uniformly sprayed on muck surface, glued with water glass of binder
Muck is tied, the dosage of waterglass is 75L/t mucks；
Gold floatation concentrate is uniformly wrapped up with granulator and is bonded in muck surface, cladding ore deposit is made, gold floatation concentrate and bonding are broken
The mass ratio of ore deposit is 1:2；
Cladding ore deposit is built into heap, acid treatment then is carried out to ore deposit heap spray sulfuric acid, the pH value of ore deposit heap is adjusted to 1.3 ~ 1.5；
Logarithmic phase, population density 10 will be grown into8~1010Cell/mL bacterium solution is sprayed onto ore deposit heap, makes bacterium in ore deposit heap
Portion's flourish, using the sulfide in ore deposit heap as the growth energy, and make to be wrapped in golden exposed in sulfide；Wherein bacterium solution
Spray rate is 10L/m2H, bacterium solution are oozed out Posterior circle from ore deposit heap bottom and utilized；Bacterium in described bacterium solution is ferrous oxide
Thiobacillus and the Mixed Microbes of the micro- spirillum of ferrous oxide；
When the arsenic-removing rate of ore in ore deposit heap is more than 60%, stops spray bacterium solution, complete dearsenification.
Embodiment 2
With embodiment 1, difference is method：
The dosage of waterglass is 100L/t mucks；
Gold floatation concentrate is 1 with the mass ratio for bonding muck:3；
The spray rate of bacterium solution is 20L/m2·h。
Embodiment 3
With embodiment 1, difference is method：
The dosage of waterglass is 150L/t mucks；
Gold floatation concentrate is 1 with the mass ratio for bonding muck:4；
The spray rate of bacterium solution is 30L/m2·h。
Claims (4)
1. the biological arsenic removing method of a kind of arsenic-containing gold ore, it is characterised in that carry out according to the following steps：
（1）Sieved after arsenic-containing gold ore is crushed, be divided into granularity<6mm thin ore deposit and granularity is 6 ~ 25mm muck, by granularity<6mm
Thin ore deposit carry out fine grinding, then floating and enriching be made gold floatation concentrate；Uniformly sprayed on muck surface, obtained with water glass of binder
Muck is bonded, the dosage of waterglass is 75 ~ 150L/t mucks；
（2）Gold floatation concentrate is uniformly wrapped up with granulator and is bonded in muck surface, cladding ore deposit, gold floatation concentrate and bonding is made
The mass ratio of muck is 1:（2~4）；
（3）Cladding ore deposit is built into heap, acid treatment then is carried out to ore deposit heap spray sulfuric acid, the pH value of ore deposit heap is adjusted to 1.3 ~ 1.5；
（4）Logarithmic phase, population density 10 will be grown into8~1010Cell/mL bacterium solution is sprayed onto ore deposit heap, makes bacterium in ore deposit heap
Internal flourish, using the sulfide in ore deposit heap as the growth energy, and make to be wrapped in golden exposed in sulfide；Wherein bacterium solution
Spray rate be 10 ~ 30L/m2H, bacterium solution are oozed out Posterior circle from ore deposit heap bottom and utilized；Bacterium in described bacterium solution is oxygen
Change the Mixed Microbes of ferrous Thiobacillus and the micro- spirillum of ferrous oxide；
（5）When the arsenic-removing rate of ore in ore deposit heap is more than 60%, stops spray bacterium solution, complete dearsenification.
2. the biological arsenic removing method of a kind of arsenic-containing gold ore according to claim 1, it is characterised in that during spray bacterium solution
PH=1.2 ~ 2.0 for the bacteria leachate being percolated out from ore deposit heap bottom are controlled, when bacteria leachate pH value exceedes this scope, to
Lime is added in bacteria leachate or sulfuric acid is adjusted to pH=1.2 ~ 2.0.
A kind of 3. biological arsenic removing method of arsenic-containing gold ore according to claim 1, it is characterised in that described arsenic-containing gold ore
Essential element content be Au 1.6 ~ 1.8g/t, As 0.35 ~ 0.37%.
A kind of 4. biological arsenic removing method of arsenic-containing gold ore according to claim 1, it is characterised in that described flotation aurin
The essential element content of ore deposit is Au 16 ~ 18g/t, As 1.6 ~ 1.8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610730893.4A CN107779609A (en) | 2016-08-26 | 2016-08-26 | A kind of biological arsenic removing method of arsenic-containing gold ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610730893.4A CN107779609A (en) | 2016-08-26 | 2016-08-26 | A kind of biological arsenic removing method of arsenic-containing gold ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107779609A true CN107779609A (en) | 2018-03-09 |
Family
ID=61439075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610730893.4A Pending CN107779609A (en) | 2016-08-26 | 2016-08-26 | A kind of biological arsenic removing method of arsenic-containing gold ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107779609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113122731A (en) * | 2021-04-12 | 2021-07-16 | 东北大学 | Interactive heap construction biological oxidation-gold extraction method for refractory gold ore |
-
2016
- 2016-08-26 CN CN201610730893.4A patent/CN107779609A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113122731A (en) * | 2021-04-12 | 2021-07-16 | 东北大学 | Interactive heap construction biological oxidation-gold extraction method for refractory gold ore |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| He et al. | A critical review on approaches for electrolytic manganese residue treatment and disposal technology: Reduction, pretreatment, and reuse | |
| CN101260465B (en) | Method for improving biological leaching speed of metallic sulphide ore or concentrate by using leaching liquid containing separated microorganism to inoculate continuously | |
| JP6802453B2 (en) | Carriers for mineral concentrates and leaching methods for mineral concentrates | |
| CN110818077B (en) | Biological filter material based on sulfur-containing tailings and preparation method and application thereof | |
| CA2257126A1 (en) | Method and apparatus for biocatalyzed anaerobic oxidation of metal sulfides | |
| CN102230084B (en) | Coated biological oxidation pretreatment method of low-level arsenic refractory gold ores | |
| CN101063181A (en) | Rapid reduction of carbonaceous gold-containing iron ore firing residue pellet gold enrichment by using rotary hearth furnace and method for coproduction of iron powder | |
| CN108203760A (en) | A kind of granulation-biological dump leaching process suitable for low-grade oxygen-sulfur mixed copper ore | |
| CN103014335A (en) | Process for comprehensively recovering gold and copper through combined biological dump leaching of refractory gold concentrate and copper melting slag | |
| CN102534210A (en) | Metal ore heap leaching, anaerobic enrichment transformation and biological leaching extraction process | |
| CN1322152C (en) | Desulfur method of iron ore | |
| CN102560110A (en) | Biological pre-oxidation treatment process of low-grade refractory gold ores or ore concentrate | |
| CN110090847B (en) | Rapid weathering and soil formation method for sulfide mineral-containing waste rock | |
| CN101191122B (en) | Mesophilic acidophilic bacteria and biological heap leaching technique for low-grade cobalt-containing sulfur concentrate | |
| CN111893298B (en) | Heap leaching treatment process for low-grade uranium ore rich in gypsum | |
| CN107739835B (en) | Continuous leaching biological leaching device and method for red mud | |
| CN107779609A (en) | A kind of biological arsenic removing method of arsenic-containing gold ore | |
| CN102337402A (en) | Extraction method of gold from gold-containing sulfur ore concentrate | |
| CN110373549B (en) | Method for recovering rare earth from heap leaching and leaching acidolysis residue containing rare earth | |
| CN110117716B (en) | Short-process gold extraction method for alkaline sulfur-arsenic coated gold ore | |
| CN103194613A (en) | Method for extracting gold from high basic gangue containing arsenic and carbon | |
| CN102502937B (en) | Method for purifying arsenic-containing wastewater by using sewage treatment slag | |
| CN106119540A (en) | The substep biology of a kind of high-phosphorus iron ore continues molten phosphorus method | |
| CN102251123A (en) | Gold extraction process of refractory gold ore | |
| CN110408801B (en) | Method for recovering rare earth by heap leaching and leaching phosphogypsum containing rare earth |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |