CN101177734A - Method for flotation of high-grade pyrite from gold extraction residues - Google Patents
Method for flotation of high-grade pyrite from gold extraction residues Download PDFInfo
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- CN101177734A CN101177734A CNA2007101149297A CN200710114929A CN101177734A CN 101177734 A CN101177734 A CN 101177734A CN A2007101149297 A CNA2007101149297 A CN A2007101149297A CN 200710114929 A CN200710114929 A CN 200710114929A CN 101177734 A CN101177734 A CN 101177734A
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- 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
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Abstract
The invention relates to a method of the flotation of high grade pyrite from residues of gold extraction by a direct cyanidation method and pertains to the environmental protection and reclamation utilization technical field of gold smelting and chemical industry. The method of the invention is the method that the high grade pyrite is flotated from the residues from the gold extraction. Aiming at the pyrite type residues from the gold extraction, a flotation technology is adopted, firstly, impurities such as copper, lead, zinc, etc. affecting the pyrite flotation are removed from the residues from the gold extraction through an acidification treatment, and then ore pulp density and acidity are adjusted; under the condition of the pH value being equal to 6-7, butyl xanthate is used as a collector, model 2 oil is used as a foaming agent, and the high grade pyrite is obtained after sulfur elements are enriched by 48 percent-52 percent through a first grade roughing, a second grade closed-circuit scavenging, a fourth grade closed-circuit concentrating. The method reduces environmental pollution, does not corrode equipment and construction facilities, reduces production cost, improves comprehensive utilization effect of resources and improves economic benefit.
Description
One, technical field
The present invention relates to a kind of from direct extraction of gold by cyanidation tailings the method for flotation of high-grade sulfurous iron ore, belong to gold smelting and chemical industry flotation of high-grade sulfurous iron ore method and technology field.
Two, background technology
In recent years, in order to improve the recycling level of sulphide ores type gold ore, in order from sulfate cinder, to reclaim the iron ore concentrate resource, the enterprise that has starts with from improving the sulfurous iron ore grade, developed a kind of from gold-extracted tail slag the method for floatation pyrite, this method is at first carried out acidification with gold-extracted tail slag between PH=1.5-2.5, remove the alkaline matter of mineral surface, makes mineral expose new interface; Adopt aerofloat 226 to make collecting agent then, 2# oil is pore forming material, adopts flotation technology, roughly selects through one-level, and secondary is closed circuit to be scanned, and level Four is closed circuit selected, and the sulphur grade of gold-extracted tail slag is brought up to more than the 48%-52%.Though this method can access the higher-grade sulfurous iron ore, flotation under acidic conditions, the equipment claimed strictness is anticorrosion, otherwise equipment corrodes easily, and the price comparison of aerofloat 226 collecting agent is expensive, and production cost is higher.
Three, summary of the invention:
The object of the present invention is to provide a kind of equipment corrosion little, the method for technology is simple, production cost is lower from gold-extracted tail slag flotation of high-grade sulfurous iron ore.
The present invention a kind of from gold-extracted tail slag the method for flotation of high-grade sulfurous iron ore, at sulphide ores type gold-extracted tail slag, adopt flotation technology at first the gold-extracted tail slag acidification to be removed the impurity that sulphur is selected in influence such as copper-lead zinc, and then adjust pulp density and acidity, under the PH=6-7 condition with butyl xanthate make collecting agent, 2# oil is made pore forming material, roughly select through one-level, secondary is closed circuit to be scanned, level Four is closed circuit selected, and element sulphur is enriched to 48%-52%, obtains the higher-grade sulfurous iron ore.
Technical solution of the present invention is as follows:
A kind of from gold-extracted tail slag the method for flotation of high-grade sulfurous iron ore, its special character is may further comprise the steps:
1, a step is mixed choosing, removes the element that sulphur is selected in interference such as copper, lead, zinc;
Cyanidation gold-extracted tailings is added water adjust pulp density 30--35%, adjust ore pulp acidity PH=6-7 with acid, pressing butyl xanthate collecting agent 80-120g/t adds in the flotation machine, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, secondary is closed circuit selected, copper, lead, zinc, gold and silver etc. are by enrichment, and individual curing;
2, two steps were selected sulphur: a step is mixed select later mine tailing to adjust pulp density 45-55%, add acid and adjust ore pulp acidity PH=3.5-4.5, continuously stirring 20-40 minute, add water again and adjust ore pulp 28-33%, and adjust ore pulp acidity PH=6-7 with alkali, make collecting agent with butyl xanthate then, 2# oil is made pore forming material, in flotation machine, add butyl xanthate and make collecting agent by 180-200g/t, add 2# oil by 85-110g/t and make pore forming material, carry out closed circuit flotation, roughly select through one-level, secondary is closed circuit to be scanned, and level Four is closed circuit selected, element sulphur is enriched to 48%-52%, obtains the higher-grade sulfurous iron ore.
Above-mentioned to adjust ore pulp acidity with acid be industrial sulphuric acid, relieving haperacidity spent acid, burn in slag acidleach raffinate, lime, caustic soda, soda ash, the carbide slag one or more.
The present invention a kind of from gold-extracted tail slag the method for flotation of high-grade sulfurous iron ore, equipment corrosion is little, technology is simple, production cost is lower.
Four, embodiment
Below provide the specific embodiment of the present invention, be used for that the invention will be further described, but the present invention is not limited to following examples.Following embodiment is the result of stochastic sampling in large-scale production process.
Embodiment 1
A kind of from gold-extracted tail slag the method for flotation of high-grade sulfurous iron ore, may further comprise the steps:
1, a step is mixed choosing, removes the element that sulphur is selected in interference such as copper, lead, zinc.Cyanidation gold-extracted tailings is added water adjust pulp density 33%, adjust ore pulp acidity PH=6 with sulfuric acid, press the butyl xanthate collecting agent, pressing 112g/t adds in the flotation machine, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, secondary is closed circuit selected, copper, lead, zinc, gold and silver etc. are by enrichment, and individual curing;
2, two steps were selected sulphur: a step is mixed select later mine tailing to adjust pulp density 50%, add sulfuric acid and adjust ore pulp acidity PH=4, continuously stirring 30 minutes, add water again and adjust pulp density 30%, and adjust ore pulp acidity PH=7 with lime, then with butyl xanthate make collecting agent, 2# oil is made pore forming material, adding butyl xanthate by 190g/t in flotation machine makes collecting agent, adds 2# oil pore forming material by 85g/t, carry out closed circuit flotation, roughly select through one-level, secondary is closed circuit to be scanned, and level Four is closed circuit selected, element sulphur is enriched to 49.56%, obtains the higher-grade sulfurous iron ore.
Embodiment 1 result of laboratory test and related data
| Cu | Pb | Zn | S | The sulphur productive rate | Sulfur recovery rate | |
| Gold-extracted tail slag | 0.36 | 0.52 | 0.54 | 27.16 | 100 | 100 |
| Mix concentrate selection | 7.56 | 10.34 | 9.98 | 26.64 | 3.77 | 1.00 |
| Sulfurous iron ore | 0.10 | 0.10 | 0.06 | 49.56 | 50.68 | 92.48 |
| Mine tailing | 0.06 | 0.08 | 0.08 | 2.97 | 45.55 | 6.52 |
Embodiment 2
A kind of from gold-extracted tail slag the method for flotation of high-grade sulfurous iron ore, may further comprise the steps:
1, a step is mixed choosing, removes the element that sulphur is selected in interference such as copper, lead, zinc.Cyanidation gold-extracted tailings is added water adjust pulp density 30%, adjust ore pulp acidity PH=6.5 with sulfuric acid, press the butyl xanthate collecting agent, pressing 120g/t adds in the flotation machine, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, secondary is closed circuit selected, copper, lead, zinc, gold and silver etc. are by enrichment, and individual curing;
2, two steps were selected sulphur: a step is mixed select later mine tailing to adjust pulp density 55%, add sulfuric acid and adjust ore pulp acidity PH=3.5, continuously stirring 20 minutes, add water again and adjust ore pulp 33%, and adjust ore pulp acidity PH=6.5 with lime, then with butyl xanthate make collecting agent, No. 2 oil are made pore forming material, adding butyl xanthate by 200g/t in flotation machine makes collecting agent, adds 2# oil pore forming material by 90g/t, carry out closed circuit flotation, roughly select through one-level, secondary is closed circuit to be scanned, and level Four is closed circuit selected, element sulphur is enriched to 50.88%, obtains the higher-grade sulfurous iron ore.
Embodiment 2 results of laboratory test and related data
| Cu | Pb | Zn | S | The sulphur productive rate | Sulfur recovery rate | |
| Gold-extracted tail slag | 0.49 | 0.61 | 0.67 | 28.67 | 100 | 100 |
| Mix concentrate selection | 8.28 | 10.23 | 10.76 | 29.37 | 4.46 | 1.31 |
| Sulfurous iron ore | 0.10 | 0.10 | 0.06 | 50.88 | 52.13 | 92.52 |
| Mine tailing | 0.06 | 0.08 | 0.08 | 2.68 | 43.41 | 6.17 |
Embodiment 3
A kind of from gold-extracted tail slag the method for flotation of high-grade sulfurous iron ore, may further comprise the steps:
1, a step is mixed choosing, removes the element that sulphur is selected in interference such as copper, lead, zinc.Cyanidation gold-extracted tailings is added water adjust pulp density 35%, adjust ore pulp acidity PH=7 with sulfuric acid, press the butyl xanthate collecting agent, pressing 80g/t adds in the flotation machine, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, secondary is closed circuit selected, copper, lead, zinc, gold and silver etc. are by enrichment, and individual curing;
2, two steps were selected sulphur: a step is mixed select later mine tailing to adjust pulp density 45%, add sulfuric acid and adjust ore pulp acidity PH=4.5, continuously stirring 40 minutes, add water again and adjust ore pulp 28%, and adjust ore pulp acidity PH=6.0 with lime, then with butyl xanthate make collecting agent, No. 2 oil are made pore forming material, adding butyl xanthate by 180g/t in flotation machine makes collecting agent, adds 2# oil pore forming material by 110g/t, carry out closed circuit flotation, roughly select through one-level, secondary is closed circuit to be scanned, and level Four is closed circuit selected, element sulphur is enriched to 52.48%, obtains the higher-grade sulfurous iron ore.
Embodiment 3 results of laboratory test and related data
| Cu | Pb | Zn | S | The sulphur productive rate | Sulfur recovery rate | |
| Gold-extracted tail slag | 0.44 | 0.63 | 0.49 | 29.85 | 100 | 100 |
| Mix concentrate selection | 5.67 | 8.23 | 5.97 | 28.97 | 5.82 | 1.69 |
| Sulfurous iron ore | 0.10 | 0.10 | 0.06 | 52.48 | 52.40 | 92.13 |
| Mine tailing | 0.06 | 0.08 | 0.08 | 2.58 | 41.78 | 6.18 |
Above embodiment of the invention flotation of high-grade sulfurous iron ore method all can reach the minimizing environmental pollution, and etching apparatus and Architectural Equipment do not reduce production costs, and improves comprehensive utilization of resources rate and economic benefit purpose.
Claims (2)
1. the method for a flotation of high-grade sulfurous iron ore from gold-extracted tail slag is characterised in that:
(1) one step was mixed choosing, removed the element that sulphur is selected in interference such as copper, lead, zinc; Cyanidation gold-extracted tailings is added water adjust pulp density 30--35%, adjust ore pulp acidity PH=6-7 with sulfuric acid, pressing butyl xanthate collecting agent 80-120g/t adds in the flotation machine, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, secondary is closed circuit selected, copper, lead, zinc, gold and silver etc. are by enrichment, and individual curing;
(2) two steps were selected sulphur: a step is mixed select later mine tailing to adjust pulp density 45-55%, add sulfuric acid and adjust ore pulp acidity PH=3.5-4.5, continuously stirring 20-40 minute, add water again and adjust ore pulp 28-33%, and adjust ore pulp acidity PH=6-7 with alkali, make collecting agent with butyl xanthate then, 2# oil is made pore forming material, in flotation machine, add butyl xanthate and make collecting agent by 180-200g/t, press 85-110g/t and add 2# oil pore forming material, carry out closed circuit flotation, roughly select through one-level, secondary is closed circuit to be scanned, and level Four is closed circuit selected, element sulphur is enriched to 48%-52%, obtains the higher-grade sulfurous iron ore.
According to claim 1 described a kind of from gold-extracted tail slag the method for flotation of high-grade sulfurous iron ore, be characterised in that:
To adjust ore pulp acidity with acid be industrial sulphuric acid, relieving haperacidity spent acid, burn in slag acidleach raffinate, lime, caustic soda, soda ash, the carbide slag one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101149297A CN101177734A (en) | 2007-11-22 | 2007-11-22 | Method for flotation of high-grade pyrite from gold extraction residues |
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| CNA2007101149297A CN101177734A (en) | 2007-11-22 | 2007-11-22 | Method for flotation of high-grade pyrite from gold extraction residues |
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| CN101177734A true CN101177734A (en) | 2008-05-14 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914683A (en) * | 2010-08-23 | 2010-12-15 | 中国科学院过程工程研究所 | Method for high-value and non-waste utilization of cyanidation slag |
| CN102071310A (en) * | 2010-12-01 | 2011-05-25 | 中南大学 | Method for comprehensively utilizing gold and arsenic-containing sulfur concentrate |
| CN102274798A (en) * | 2011-09-02 | 2011-12-14 | 中南大学 | Collector for use in combined flotation of low-activity pyrite |
| CN102784713A (en) * | 2012-07-18 | 2012-11-21 | 山东国大黄金股份有限公司 | Method for recycling multiple elements of liquid after cyanided tailing flotation |
| CN106269289A (en) * | 2016-10-31 | 2017-01-04 | 长春黄金研究院 | A kind of cyanogen slag pyritous method of broken cyanide flotation |
| CN110846496A (en) * | 2019-12-03 | 2020-02-28 | 山东国大黄金股份有限公司 | Sulfating roasting smelting method of sulfur-containing copper-cobalt concentrate |
| CN111744676A (en) * | 2020-07-02 | 2020-10-09 | 沈阳五寰工程技术有限公司 | Acid pretreatment-flotation method for high-sulfur magnetite concentrate desulfurization |
| CN115090427A (en) * | 2022-08-08 | 2022-09-23 | 昆明理工大学 | Method for improving mineral separation index of carbon-containing copper sulfide ore |
-
2007
- 2007-11-22 CN CNA2007101149297A patent/CN101177734A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914683B (en) * | 2010-08-23 | 2013-07-24 | 北京融智博润科技有限公司 | Method for high-value and non-waste utilization of cyanidation slag |
| CN101914683A (en) * | 2010-08-23 | 2010-12-15 | 中国科学院过程工程研究所 | Method for high-value and non-waste utilization of cyanidation slag |
| CN102071310A (en) * | 2010-12-01 | 2011-05-25 | 中南大学 | Method for comprehensively utilizing gold and arsenic-containing sulfur concentrate |
| CN102071310B (en) * | 2010-12-01 | 2012-10-24 | 中南大学 | Method for comprehensively utilizing gold and arsenic-containing sulfur concentrate |
| CN102274798A (en) * | 2011-09-02 | 2011-12-14 | 中南大学 | Collector for use in combined flotation of low-activity pyrite |
| CN102784713B (en) * | 2012-07-18 | 2013-12-04 | 山东国大黄金股份有限公司 | Method for recycling multiple elements of liquid after cyanided tailing flotation |
| CN102784713A (en) * | 2012-07-18 | 2012-11-21 | 山东国大黄金股份有限公司 | Method for recycling multiple elements of liquid after cyanided tailing flotation |
| CN106269289A (en) * | 2016-10-31 | 2017-01-04 | 长春黄金研究院 | A kind of cyanogen slag pyritous method of broken cyanide flotation |
| CN110846496A (en) * | 2019-12-03 | 2020-02-28 | 山东国大黄金股份有限公司 | Sulfating roasting smelting method of sulfur-containing copper-cobalt concentrate |
| CN110846496B (en) * | 2019-12-03 | 2021-08-03 | 山东国大黄金股份有限公司 | Sulfating roasting smelting method of sulfur-containing copper-cobalt concentrate |
| CN111744676A (en) * | 2020-07-02 | 2020-10-09 | 沈阳五寰工程技术有限公司 | Acid pretreatment-flotation method for high-sulfur magnetite concentrate desulfurization |
| CN115090427A (en) * | 2022-08-08 | 2022-09-23 | 昆明理工大学 | Method for improving mineral separation index of carbon-containing copper sulfide ore |
| CN115090427B (en) * | 2022-08-08 | 2023-08-11 | 昆明理工大学 | Method for improving mineral separation index of carbon-containing copper sulfide ore |
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Open date: 20080514 |