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Toxic sand combined inhibitor and high-sulfur high-arsenic lead-zinc-silver ore beneficiation method

A technology combining inhibitors and beneficiation methods, applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problem of low concentrate grade, excessive arsenic content in lead-zinc concentrate products, and slurry conveying pipelines and filters. Easy to form calcium blockage and other problems, to achieve the effect of saving water resources

Inactive Publication Date: 2020-06-09
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a combination inhibitor of arsenopyrite and a method for beneficiating lead-zinc-silver ore rich in pyrrhotite and arsenopyrite, which can not only realize the combination of lead-zinc-silver minerals and magnetite The effective separation of iron ore and arsenopyrite can effectively avoid the low recovery rate of associated gold and silver, sticky flotation foam, low concentrate grade, easy calcium clogging, lead-zinc Concentrated ore products contain technical problems such as excessive arsenic, and are simple, efficient and environmentally friendly, which is conducive to improving the level of comprehensive resource utilization, increasing corporate benefits, and protecting the ecological environment

Method used

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  • Toxic sand combined inhibitor and high-sulfur high-arsenic lead-zinc-silver ore beneficiation method

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Experimental program
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Embodiment approach

[0030](1) In step 2, the arsenopyrite combination inhibitor in the present invention is used as the arsenopyrite combination inhibitor, zinc sulfate and sodium sulfite are used as the zinc mineral inhibitor, ethiazide is used as the collector, and terpineol oil is used as the collector. Frother for lead flotation.

[0031] (2) In step 2, carry out at least one lead scavenging to the lead roughing tailings, to improve the recovery rate of lead concentrate, for example, one lead scavenging, two lead scavenging, three lead scavenging can be carried out etc. There is no specific restriction on this, and the specific times of lead sweeping and the dosage of lead sweeping agents should be adjusted according to the actual situation. When conducting two or more lead sweeps, only add the above-mentioned arsenopyrite combination inhibitor, zinc sulfate, sodium sulfite, ethion and terpineol oil in the first lead sweep, and only add Ethiazide and pinitol oil. For example: if figure 1 A...

Embodiment 1

[0047] In a lead-zinc-silver polymetallic ore rich in pyrrhotite and arsenopyrite in Inner Mongolia, the silver grade is 118.14g / t, the lead grade is 1.14%, the zinc grade is 3.68%, the sulfur grade is 14.50%, and the arsenic grade is 2.54%. The lead in this ore mainly exists in the form of galena, the zinc mineral mainly exists in the form of sphalerite, the silver mineral mainly exists in the form of argentite, and the other metal sulfides mainly exist in the form of pyrrhotite and arsenopyrite. The gangue minerals are mainly quartz and muscovite, and a small amount of biotite, chlorite, kaolinite and fluorite.

[0048] like figure 1 As shown, a method for beneficiating lead-zinc-silver ore rich in pyrrhotite and arsenopyrite is used to process the above-mentioned lead-zinc-silver polymetallic ore rich in pyrrhotite and arsenopyrite in Inner Mongolia, which may specifically include The following steps:

[0049] Step 1. Preparation of pulp: Use the above-mentioned lead-zinc...

Embodiment 2

[0064] In a lead-zinc-silver polymetallic ore rich in pyrrhotite and arsenopyrite in Guangdong, the grade of silver is 92.33g / t, the grade of lead is 0.86%, the grade of zinc is 4.06%, the grade of sulfur is 18.12%, and the grade of arsenic is 3.23%. The lead in this ore mainly exists in the form of galena, the zinc mineral mainly exists in the form of sphalerite, the silver mineral mainly exists in the form of argentite, and the other metal sulfides mainly exist in the form of pyrrhotite and arsenopyrite. Gangue minerals are mainly quartz and muscovite, chlorite, kaolinite and fluorite.

[0065] like figure 1 As shown, a method for beneficiating lead-zinc-silver ore rich in pyrrhotite and arsenopyrite is used to process the above-mentioned lead-zinc-silver polymetallic ore rich in pyrrhotite and arsenopyrite in Guangdong, which may specifically include The following steps:

[0066] Step 1. Preparation of pulp: Use the above-mentioned lead-zinc-silver polymetallic ore rich i...

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Abstract

The invention discloses a toxic sand combined inhibitor and a high-sulfur high-arsenic lead-zinc-silver ore beneficiation method, the toxic sand combined inhibitor is formed by mixing lime, calcium hypochlorite and sodium humate, and the mass ratio of the lime to the calcium hypochlorite to the sodium humate is (4.0-8.0): (2.0-4.0): (1.0-2.0). The lead-zinc-silver ore beneficiation method comprises the following steps that a toxic sand combined inhibitor is added into raw ore pulp for lead roughing, and lead roughing concentrate and lead roughing tailings are obtained; lead scavenging is conducted on the lead roughing tailings at least once, and lead scavenging tailings are obtained; the lead roughing concentrate is subjected to at least one time of lead concentration, and lead concentrateis obtained; magnetic separation is carried out on the lead scavenging tailings to obtain magnetic separation tailings; concentrating and dehydrating are carried out on the magnetic separation tailings to obtain concentrated ore pulp, and the toxic sand combined inhibitor is added into the concentrated ore pulp for zinc flotation to obtain zinc concentrate. The method can effectively separate thelead-zinc-silver minerals from pyrrhotite and poisonous sand, and is simple, easy to implement, efficient and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of lead-zinc ore beneficiation, in particular to a combination inhibitor of arsenopyrite and a high-sulfur, high-arsenic lead-zinc-silver ore (the high-sulfur, high-arsenic lead-zinc-silver ore refers to an ore rich in pyrrhotite and arsenopyrite. lead-zinc-silver ore, and the mass percent of sulfur in the lead-zinc-silver ore is greater than 14.00%, and the mass percent of arsenic is greater than 2.50%) ore dressing method. Background technique [0002] With the massive development and utilization of mineral resources, the reserves of high-grade and easy-to-recover lead-zinc ores are constantly decreasing, and the ore structure is complex, the minerals are mutually symbiotic, metasomatized or wrapped, and the lead-zinc-silver polymetallic sulfide ores that are poor, fine, and difficult to handle Mineral dressing recovery is getting more and more attention. [0003] At present, the beneficiation and recover...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03B7/00B03D101/06B03D103/04
CPCB03B7/00B03D1/018B03D2201/06B03D2203/04
Inventor 苏建芳肖巧斌王中明刘方谭欣万丽凌石生刘书杰张云海
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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