Method for improving beneficiation indexes of low-grade lead-zinc-silver polymetallic ores by combining collecting agent

A technology of combining collectors and polymetallic ore, applied in flotation, solid separation and other directions, can solve the problems of poor recovery performance, poor selectivity, difficult to improve, etc., to improve recovery rate, increase content, and improve economic benefits Effect

Inactive Publication Date: 2019-01-01
云南中金共和资源有限公司
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Problems solved by technology

In the prior art, in the sorting process, when a single agent such as xanthate or ethylthiazide is used as a collector, although the concentrate grade can basically reach Sales requirements: lead concentrate contains about 50% lead, zinc concentrate contains about 40% zinc, but xanthate has strong recovery performance but poor selectivity, ethion has strong selectivity but recovery performance It is worse than xanthate, and the recovery rate of each metal is low: the recovery rate of lead and zinc is 80% to 85%, and the total silver is 75% to 80%, which is difficult to improve

Method used

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  • Method for improving beneficiation indexes of low-grade lead-zinc-silver polymetallic ores by combining collecting agent

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Embodiment 1

[0019] Combination collector in the present embodiment improves the method for beneficiation index of low-grade lead-zinc-silver polymetallic ore, carry out according to the following steps:

[0020] (1) Ball mill the raw ore of low-grade lead-zinc-silver polymetallic ore to -200 mesh, accounting for more than 68%, add lime to adjust the pH to 9.5, add zinc sulfate and sodium sulfite and stir, the amount of zinc sulfate added is 500g / t raw ore, and the amount of sodium sulfite added 500g / t, then add 25# black medicine and butylamine to stir, 25# xanthate is added in an amount of 10g / t raw ore, and finally add ethyl disulfide and stir, and the amount of ethyl disulfide added is 60g / t raw ore to obtain lead rough dressing Perform lead roughing flotation to obtain lead roughing concentrate and lead roughing tailings;

[0021] (2) add lime to adjust pH to 9.5 in described lead roughing concentrate, then add zinc sulfate and sodium sulfite, the add-on of zinc sulfate is 200g / t lead...

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Abstract

The invention belongs to the technical field of beneficiation, particularly relates to a method for improving beneficiation indexes of low-grade lead-zinc-silver polymetallic ores by combining a collecting agent. According to the method, ethanethiol is adopted as a main collecting agent in the lead process, a butylamine black medicine, the 25 # black medicine is an auxiliary collecting agent, thezinc flow ethyl xanthate and the butyl xanthate are added according to a ratio of 1:1 to serve as a main collecting agent, and the butyl amine black medicine is used as an auxiliary collecting agent.By utilizing the use of the combined collecting agent, the concentrate grade is stable and even the small amplitude is improved, the recovery rate of the three kinds of metal of the lead and zinc silver is greatly improved, the content of the silver in the lead concentrate is improved, and the economic benefit is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a method for improving the mineral processing index of low-grade lead-zinc-silver polymetallic ore by combining collectors. Background technique [0002] The lead grade of the low-grade lead-zinc-silver polymetallic ore is about 0.6%, the zinc grade is about 1.6%, and the silver is about 70g / t. In the prior art, in the sorting process, when a single agent such as xanthate or ethylthiazide is used as a collector, although the concentrate grade can basically reach Sales requirements: lead concentrate contains about 50% lead, zinc concentrate contains about 40% zinc, but xanthate has strong recovery performance but poor selectivity, ethion has strong selectivity but recovery performance It is worse than xanthate, and the recovery rate of each metal is low: the recovery rate of lead and zinc is 80% to 85%, and the total silver is 75% to 80%, which is difficult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02B03D103/02
CPCB03D1/018B03D2201/02B03D2203/02
Inventor 高承康袁龙潭
Owner 云南中金共和资源有限公司
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