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Method for recovering iron resources in reverse flotation tailings

A technology of reverse flotation and tailings, applied in chemical instruments and methods, wet separation, solid separation, etc., to achieve the effect of less regrinding, lower tailings grade, and light mill burden

Inactive Publication Date: 2011-11-30
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is suitable for comprehensive tailings composed of strong magnetic separation tailings and flotation tailings, but not for hematite reverse flotation tailings

Method used

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  • Method for recovering iron resources in reverse flotation tailings
  • Method for recovering iron resources in reverse flotation tailings

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Embodiment

[0046] When the grade of the reverse flotation tailings is 23.40%, and the particle size of the cyclone overflow product reaches the requirement of -320 mesh content of more than 91%, the method for reclaiming iron resources in the reverse flotation tailings of the present invention can make the tailings The grade was reduced to 14.5%, and the recovered concentrate grade reached 65.2%.

[0047] When the grade of the reverse flotation tailings is 14.50%, and the particle size of the cyclone overflow product reaches the requirement of -320 mesh content above 91%, the method for reclaiming iron resources in the reverse flotation tailings of the present invention can make the tailings The grade was reduced to 11.2%, and the recovered concentrate grade reached 60.4%.

[0048] The beneficial effects of the present invention are as follows: the reverse flotation tailings are first separated by a section of weak magnetic and a section of strong magnetic separation, part of the tailing...

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Abstract

The invention relates to the technical field of recovering reverse flotation tailings of hematite, in particular to a method for recovering iron resources in reverse flotation tailings. It is characterized in that the rough concentrate obtained from the reverse flotation tailings in the stage grinding of lean hematite and the combined process of magnetic separation-gravity separation-anion reverse flotation is separated by one stage of weak magnetic and one stage of strong magnetic separation, and then ground to After the particle size-320 mesh content reaches more than 91%, the magnetic ore in the reverse flotation tailings is recovered through the second-stage weak magnetic separation, the second-stage strong magnetic separation-reverse flotation operation, roughing, selection and three-stage scavenging. In the present invention, reverse flotation tailings are sorted by one section of weak magnetic field and one section of strong magnetic field, throwing away part of the tailings, regrinding a section of weak magnetic concentrate, and a section of strong magnetic concentrate. light. After regrinding, through the second-stage weak magnetic field, the second-stage strong magnetic field, the roughing, selection and three-stage sweeping of the reverse flotation operation, the coarse-grained intergrowth monomers in the reverse flotation tailings are dissociated, and the reverse flotation process is recovered. Flotate the metals in the tailings to reduce the loss of metals and reduce the grade of tailings.

Description

technical field [0001] The invention relates to the technical field of recovering reverse flotation tailings of hematite, in particular to a method for recovering iron resources in reverse flotation tailings. Background technique [0002] In the stage grinding of lean hematite, the combined process of magnetic separation-gravity separation-anion reverse flotation, the final tailings are composed of strong magnetic separation tailings, gravity separation tailings, and flotation tailings. Among them, the grade of flotation tailings is 14-23%. When the selectivity of lean hematite is poor, the grade of flotation tailings is often 18-23%, resulting in a large amount of metal loss, and the mineral resources are not fully utilized. [0003] In the 7th issue of 2006, "Metal Mine" P77-P79 published "Experimental Research on Tailings Re-selection of Diaojuntai Concentrator" The tailings re-selected in the paper are: "Continuous grinding, magnetic separation Anion reverse flotation ...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 何晓明徐俊峰刘国义刘志斌赵彬
Owner ANSTEEL GRP MINING CO LTD
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