Flotation reagent for high-mud micro-fine-particle pyrite type gold ore and use method of flotation reagent

A pyrite-type, flotation agent technology, applied in flotation, solid separation, etc., can solve the problems affecting flotation indicators, low Au grade of gold concentrate, low Au recovery rate, etc., to improve the grade and recovery rate , Reduce the pressure of mine environmental protection, excellent flotation index effect

Active Publication Date: 2022-07-01
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combination of pentyl xanthate and aniline black is the most commonly used collector in gold production, but this combination has the problem of poor flotation selectivity for gold mines where gangue minerals are easy to muddy
Fine-grained pyrite-type gold ore with high content of argillaceous minerals, under fine grinding conditions, is likely to produce a large amount of secondary slime, which affects the flotation index, fine-grained and fine-grained gold is easy to lose, and the Au grade of gold concentrate is low , the Au recovery rate is not high

Method used

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  • Flotation reagent for high-mud micro-fine-particle pyrite type gold ore and use method of flotation reagent
  • Flotation reagent for high-mud micro-fine-particle pyrite type gold ore and use method of flotation reagent
  • Flotation reagent for high-mud micro-fine-particle pyrite type gold ore and use method of flotation reagent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A gold deposit in Northwest China is a high-temperature hydrothermally altered rock-type gold ore hosted in the compressional structural fracture zone of mylonite. The main valuable element is gold, with associated low-grade silver, belonging to the fine-grained-super The fine-grained disseminated type is extremely difficult to select metallurgical ores. The main precious metal minerals in the ore are gold minerals, mainly fine-grained gold, and the grade of Au is 2.4g / t. Most of the gold particles are contained in arsenopyrite in a microscopic and ultra-microscopic dispersion state, followed by gangue minerals such as sericite, chlorite and quartz, and a few are coexisted or encapsulated with pyrite and pyrrhotite. The metal sulfide minerals in the ore are mainly pyrite, arsenopyrite, orthorhomite and pyrrhotite, accounting for about 5% of the total mineral content. The main gangue minerals are quartz, sericite, chlorite, feldspar, kaolin, etc. The hardness of gangue ...

Embodiment 2

[0043] Example 2 adopts the same raw ore, dosage of chemicals and technological process as in Example 1, the difference is that the combination mode of the gold ore combination collector adopted in Example 2 is different from that in Example 1, and the gold ore of Example 2 The combined collector is: Y-89 xanthate + No. 25 black medicine + collector EMB-506.

Embodiment 3

[0045] Example 2 adopts the same raw ore, dosage of chemicals and technological process as in Example 1, the difference is that the combination mode of the gold ore combination collector adopted in Example 2 is different from that in Example 1, and the gold ore of Example 2 The combined collector is: amyl xanthate + No. 25 black medicine + collector EMB-506.

[0046] The flotation results of the high-mud fine-grained pyrite-type gold ore in the above Examples 1-3 and Comparative Examples 1-3 are shown in Table 1.

[0047] Table 1

[0048]

[0049]

[0050] As can be seen from Table 1, after adopting the flotation agent of the present invention, under the same conditions, adding the collector EMB-506 as the auxiliary collector, the recovery rate of Au in the gold coarse concentrate product obtained by the two roughings is higher than When adding, it increased by 6.2 percentage points; in the selection process, using inhibitor EMY-515 as inhibitor has higher Au grade than...

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Abstract

The invention belongs to the technical field of mineral processing, and particularly relates to a flotation reagent for high-mud micro-fine-particle pyrite type gold ore and a using method of the flotation reagent. The flotation reagent provided by the invention comprises a collecting agent EMB-506 and an inhibitor EMY-515, the using method of the flotation reagent comprises the steps that S1, the pH value of ore pulp is adjusted, then an activating agent, a combined collecting agent containing the collecting agent EMB-506 and a foaming agent are added for sufficient pulp mixing, and gold rough concentrate and rough tailings are obtained through rough concentration; and S2, the inhibitor EMY-515 is added into the gold rough concentrate for concentration, and flotation gold concentrate is obtained. The flotation reagent can strengthen recovery of micro-fine particle gold-bearing sulfide, effectively improves the grade and the recovery rate of concentrate Au obtained through flotation of micro-fine particle pyrite type gold ore with high mud content, successfully cancels use of sulfuric acid in the flotation process, changes gold separation under the acidic condition into gold separation under the alkalescence condition, relieves the mine environmental protection pressure, and improves the economic benefits of the mine. The green and efficient utilization of the type of mineral resources is realized.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a flotation agent for high-mud fine-grained pyrite-type gold ore and a method for using the same. Background technique [0002] Because of its good metal ductility, chemical stability, and excellent electrical and thermal conductivity, gold has been widely used in industry, information and electronic technology, aerospace, aviation, new energy, and new materials in recent years. With the gradual expansion of the gold mining industry, the easy-to-separate gold ore is rapidly depleting, and the low-grade refractory sulfide ore, as the main gold-carrying mineral, has become an important development resource in the gold-separation industry. [0003] In my country's gold mineral resources, the proportion of refractory gold ore is relatively large, the occurrence state of gold is complex, and there are many kinds of associated minerals in gold deposits, including...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02B03D101/06B03D101/04B03D103/02
CPCB03D1/018B03D2201/02B03D2201/06B03D2201/04B03D2203/025Y02P10/20
Inventor 赵开乐张俊辉杨耀辉宋军颜世强王晓慧明平田王振李飞
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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