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Technology for flotation of lead and zinc sulfide ores through inflatable floatation columns

A flotation column, inflatable technology, used in flotation, solid separation, etc., to achieve the effect of simplifying the process, uniform feeding, and reliable work

Active Publication Date: 2014-07-23
GUANGXI ZHONGJIN LINGNAN MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an inflatable flotation column flotation process with high degree of automation, streamlined process, high efficiency and low production cost for low-grade, complex and refractory lead-zinc sulfide ores

Method used

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  • Technology for flotation of lead and zinc sulfide ores through inflatable floatation columns
  • Technology for flotation of lead and zinc sulfide ores through inflatable floatation columns

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Experimental program
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Embodiment approach

[0084] (1) Basic work research——research on ore properties, technological process and technological parameters, and characteristics of flotation column equipment. The research shows that the grinding fineness of the selected raw ore, the foaming effect of the flotation column, and the beneficiation efficiency are the keys to the quality of the flotation index;

[0085] (2) Use small-scale flotation column test device to carry out small-scale experimental research in the laboratory;

[0086] (3) Partial industrial tests were carried out with industrial equipment to provide a reliable basis for industrial production; industrial tests were carried out for flotation of low-grade, complex, and refractory lead-zinc sulfide ores with inflatable flotation columns, and the use of flotation columns was demonstrated. The feasibility of carrying out flotation of lead-zinc ore and mastering the shortcomings of the process provide a design basis for industrial application.

Embodiment 1

[0087] Embodiment 1: Through the industrial test of lead roughing by flotation column, a reasonable grinding fineness is determined. According to the test, when the raw ore grinding fineness reaches -200 mesh, accounting for 75.4%, the recovery rate of lead roughing single machine reaches 73.2%, and when the grinding fineness urgently needs to be increased, the recovery rate does not increase significantly. If other parameters remain unchanged, when the proportion of -200 mesh is less than 75%, the recovery rate is lower than 65.7%, and the reduction is relatively large, which directly affects the recovery rate of ore dressing. Considering the beneficiation index and the grinding cost comprehensively, the ore flotation column flotation selection grinding fineness is controlled at 75%~80%;

Embodiment 2

[0088] Embodiment 2: Through the industrial test of the flotation column, it is determined that the flotation column is applied to the roughing operation of lead-zinc ore. According to the test, the best conditions for the roughing operation of the flotation column are: the air pressure of the spray gun is 0.48 Mpa, and the gas volume per unit column section is 0.96m 3 / min, the foam layer height is 110mm. The lead roughing operation uses 2# oil as the foaming agent, lime as the regulator, butyl xanthate and ethionyl as the collector, the recovery rate of the lead roughing single machine reaches 72.6%, and the grade is 17.8%. Copper sulfate is used as the activator in zinc roughing operation, 2# oil is used as foaming agent, lime is used as regulator, and butyl xanthate is used as collector. The recovery rate of zinc roughing single machine reaches 92.8%, and the grade is 21.5%. If the air pressure, gas volume or foam layer height of the flotation column change more than the ...

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Abstract

The invention discloses a technology for floatation of lead and zinc sulfide ores through inflatable floatation columns. The floatation columns are fully utilized, and the method includes the steps of ore grinding, mixing of ore pulp and flotation reagents, rougher flotation operation, concentration operation, scavenging operation and the like. The method is based on the flotation column three-phase flow mechanics theory, through process mineralogy research and technological process research of low-grade, complex and refractory lead and zinc sulfide ores of mines and research and improvement on an inflatable flotation column device, the flotation columns are successfully applied to the flotation technology of low-grade, complex and refractory lead and zinc sulfide ores, and the technological process that the floatation columns are adopted in all the flotation operations of rougher flotation, concentration and scavenging of lead and zinc sulfide ores is achieved. The technology has the advantages that the automation degree is high, labor intensity of workers is low, ore flotation efficiency is high, the technological process is simple, production indexes are stable, maintenance is convenient, building investment and production cost are low, consumption of the reagents is saved by about 10%, electricity consumption is saved by about 20 %, and water consumption is saved by about 20 %.

Description

technical field [0001] The invention relates to a method for beneficiation, in particular to a beneficiation process for low-grade, complex and refractory lead-zinc sulfide ores. Background technique [0002] The lead-zinc recovery and separation of lead-zinc ore generally adopts foam flotation process. The flotation equipment used in the froth flotation process is mainly a mechanical agitation flotation machine, which has a history of hundreds of years. In the past ten years, another kind of flotation device—the inflatable flotation column has been developed rapidly. Compared with the traditional mechanical agitation flotation machine, this device has a high degree of automation, stable production indicators, high beneficiation efficiency, simple process flow, and easy maintenance. Convenience, low construction investment and production costs. Due to the special structure of the inflatable flotation column, many studies and experiments have shown that the flotation column...

Claims

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Application Information

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IPC IPC(8): B03D1/04B03D1/012
Inventor 马国秋戴晶平许毓海王颢敏苏振华刘兵佟立永何晋勇钟旭群张笃邓振立占小龙陈中生何媛媛兰红红
Owner GUANGXI ZHONGJIN LINGNAN MINING CO LTD
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