Method for reinforcing copper-nickel sulphide ore flotation separation in industrialized application

A copper-nickel sulfide ore and flotation technology, applied in flotation, solid separation and other directions, can solve the problems of seldom industrial application, unclear relationship between process parameters, and difficult to define the conditions of mechanical stirring process parameters, so as to eliminate adverse effects. , Simple operation, low cost effect

Inactive Publication Date: 2016-07-20
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although domestic and foreign related studies have also paid attention to the stirring and slurrying effect in the mineral separation process, and carried out research on the influence of stirring and slurrying on flotation and its related mechanism; unfortunately, the current research reports mainly focus on In the stage of theoretical research and laboratory test, there are few introductions on industrial application. The main reason may be that in the industrial scale-up process of intensive mixing, the process parameters of mechanical agitation are difficult to define, and the relationship between the main process parameters is not clear.

Method used

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  • Method for reinforcing copper-nickel sulphide ore flotation separation in industrialized application
  • Method for reinforcing copper-nickel sulphide ore flotation separation in industrialized application
  • Method for reinforcing copper-nickel sulphide ore flotation separation in industrialized application

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Effect test

Embodiment 1

[0022] Refer to the attached figure 1 , to describe Embodiment 1 of the present invention in detail.

[0023] Use manual attached figure 1 The test process is to select a copper-nickel sulfide ore slurry sample, and the slurry processing capacity is 300m 3 / h, the grinding fineness of the selected ore pulp is -0.074mm, accounting for 60-75%, the product of the first stage of grinding is strengthened by mechanical pulping, and the energy input of stirring and pulping is 1.5kW·h / m 3 ~0.8kW·h / m 3 Within the range, the linear velocity of the tip of the stirring impeller is in the range of 7.5m / s~10.0m / s; the slurry after pulping immediately enters the first stage of flotation cycle to obtain the first stage of concentrate, and the first stage of tailings enters the second stage of grinding to obtain the second stage Concentrate and final tailings, the mineral processing indicators obtained are shown in Table 1.

[0024] With conventional copper sulfide nickel ore flotation sch...

Embodiment 2

[0029] Refer to the attached image 3 with attached Figure 4 , to describe Embodiment 2 of the present invention in detail.

[0030] Use manual attached image 3 According to the test procedure, the slurry sample 2 of a copper-nickel sulfide ore is selected, and the slurry processing capacity is 15m 3 / h, the grinding fineness of the selected ore pulp is -0.074mm, accounting for 70%, the product of the grinding is strengthened by mechanical pulping, and the energy input of stirring and pulping is 2.5kW·h / m 3 ~1.5kW·h / m 3 Within the range, the linear velocity of the tip of the agitating impeller is in the range of 7.5m / s~10.0m / s, and the ore pulp after slurry adjustment immediately enters the flotation cycle to obtain the final concentrate and flotation tailings. The obtained mineral processing indicators are shown in Table 2 .

comparative approach 1

[0031] Contrast scheme 1: with the comparative copper sulfide nickel ore flotation scheme (parameters of mechanical agitation in the comparative scheme: energy input at 2.7kW h / m 3 , the linear speed of the tip of the stirring impeller is 10.5m / s) to select the same raw materials, the obtained mineral processing index is shown in Table 2, and the test process, process and chemical conditions are shown in the appendix Figure 4 .

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Abstract

The invention relates to a method for reinforcing copper-nickel sulphide ore flotation separation in industrialized application. According to the method, reinforced mechanical stirring and pulp mixing is carried out on ore pulp before copper-nickel sulphide ore flotation, and the conditions of stirring and pulp mixing process parameters need to meet simultaneously that energy input is in a range from 0.5kW.h/m<3> to 2.5kW.h/m<3>, and the linear speed of the blade end of a stirring impeller is in a range from 7.5m/s to 10.0m/s. The ore pulp after the reinforced stirring and pulp mixing immediately enters the flotation operation, a conventional copper-nickel sulphide ore flotation flow is adopted in the flow of the flotation operation, concentrates are obtained through the flotation and used as final concentrates, and flotation tailings can be re-grinded and re-separated to obtain concentrates, and the tailings are discarded. The invention provides a method for reinforcing copper-nickel sulphide ore flotation separation. According to the method, the negative effects of magnesium silicate ores on the copper-nickel sulphide ore flotation can be weakened and even eliminated, so that copper-nickel sulphide ore resources are efficiently utilized.

Description

technical field [0001] The invention relates to the technical field of ore flotation, in particular to a method for strengthening the flotation separation of copper-nickel sulfide ore in industrial applications. Background technique [0002] The interaction between magnesium silicate minerals and sulfide mineral particles is the key to affect the flotation separation of copper-nickel sulfide ore. Numerous studies have shown that in the weak alkaline slurry environment commonly used in the flotation of copper-nickel sulfide ore, serpentine has a high zero charge point, and the positively charged serpentine slime is covered on the surface of sulfide minerals by electrostatic attraction. , thereby seriously affecting the flotation of copper-nickel sulfide minerals, making it difficult to improve the concentrate grade and recovery rate, and it is difficult to reduce the magnesium oxide content of the concentrate. [0003] In the existing basic research and industrial practice o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D101/02B03D101/04B03D103/02
CPCB03D1/012B03D2201/02B03D2201/04B03D2203/025
Inventor 石晴卢毅屏冯其明张国范欧乐明
Owner CENT SOUTH UNIV
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