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Adding oxygen-generating agent to control the flotation of high-sulfur iron sulfide ore in the grinding process

An oxygen-making agent and high-sulfur iron technology, applied in flotation, solid separation, etc., can solve the problems of low dissolved oxygen content in ore pulp, oxygen consumption, xanthate can not play the role of collector, etc.

Active Publication Date: 2022-03-01
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] In view of the prior art, "when the content of iron sulfide and oxygen-consuming organic matter in high-sulfur iron sulfide ore is high, a large amount of oxygen will be consumed, resulting in a very low dissolved oxygen content in the ore pulp. At this time, it is difficult for xanthate (collector) Oxidation on the surface of minerals produces double xanthate or hydrophobic metal xanthate, so that xanthate cannot play the role of collector". Flotation method of high sulfur iron sulfide ore

Method used

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  • Adding oxygen-generating agent to control the flotation of high-sulfur iron sulfide ore in the grinding process
  • Adding oxygen-generating agent to control the flotation of high-sulfur iron sulfide ore in the grinding process

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Embodiment 1-3

[0048] Using a high-sulfur iron chalcopyrite mine in Yunnan, the raw ore grade is Cu 0.758%, S 14.69%, Fe grade is 18.9%; organic matter content is 2.5%;

[0049] The method of adding oxygen generator to control the flotation of chalcopyrite containing high sulfur iron during the grinding process, such as figure 1 shown, including the following steps:

[0050] (1) Grind high-sulfur iron-chalcopyrite in a mill to -200 mesh, accounting for 74%, and selectively add hydrogen peroxide solution during the grinding process to adjust the dissolved oxygen content in the pulp to obtain a predetermined fineness of pulp ;

[0051] (2) Add butyl xanthate as a copper mineral collector, lime as a pyrite inhibitor, Z200 as a flotation foaming agent, adjust the time / strength of aeration and stirring, and change the chemical environment of the pulp and mineral surface;

[0052] (3) After one roughing, two beneficiation and three sweepings, the medium ore is returned in turn, and after flotati...

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Abstract

The invention discloses a method for adding an oxygen-generating agent to control the flotation of high-sulfur iron-containing sulfide ore during the ore grinding process, which belongs to the field of mineral processing and comprises the following steps: (1) ore grinding: performing high-sulfur iron-containing sulfide ore Wet grinding, adding an oxygen generator during the grinding process to obtain a pulp of predetermined fineness; (2) pulping: adding xanthate as a collector, adjusting the time / strength of aeration and stirring, and changing the chemical environment of the pulp and mineral surface; (3) Flotation: After separation by flotation, foam concentrate and sand-set tailings are obtained. The present invention increases the dissolved oxygen content in the pulp by adding an oxygen generator and adjusting the time / strength of aeration and stirring, affects the chemical environment and electrochemical conditions of the solution in the pulp-collector-mineral system, and further regulates the concentration of high-sulfur iron sulfide ores. flotation.

Description

technical field [0001] The invention belongs to the field of mineral processing, and relates to a method for adding an oxygen-generating agent to control the flotation of high-sulfur iron-containing sulfide ore during the ore grinding process, in particular to a method for enriching and separating target minerals and gangue minerals during the flotation process of metal sulfide ores Methods. Background technique [0002] At present, there are few researches on the optimal working conditions of new flotation reagents, especially non-toxic and harmless high-efficiency sulfide ore collectors, resulting in that the performance of collectors cannot be fully exerted under many conditions. When the properties of the ore change, there are often unpredictable and unsolvable problems of large fluctuations in production indicators, resulting in serious economic losses. The flotation of minerals is closely related to the dissolved oxygen content in the pulp, and the electrochemical proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/001B03D1/018B03D101/02B03D101/06B03D103/02
CPCB03D1/00B03D1/001B03D1/018B03D2201/02B03D2201/06B03D2203/02
Inventor 王长涛刘润清孙伟荆念文胡岳华
Owner CENT SOUTH UNIV