Hematite reverse flotation tailings re-election process

A technology of reverse flotation and hematite, which is applied in the direction of solid separation, wet separation, chemical instruments and methods, etc., to achieve the effects of small footprint, reduced foam, and lower tailings grade

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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  • Hematite reverse flotation tailings re-election process
  • Hematite reverse flotation tailings re-election process

Examples

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Embodiment

[0044] When the grade of the reverse flotation tailings is 25.32%, and the particle size of the cyclone overflow product reaches the requirement of -320 mesh content of more than 90%, the hematite reverse flotation tailings re-election process of the present invention can make the tailings The grade was reduced to 16.3%, while the recovered concentrate grade was 64.2%.

[0045] When the grade of the reverse flotation tailings is 15.30%, and the particle size of the cyclone overflow product reaches the requirement of -320 mesh content above 91%, the hematite reverse flotation tailings re-election process of the present invention can make the tailings The grade was reduced to 11.8%, while the recovered concentrate grade was 60.2%.

[0046] The beneficial effects of the present invention are: the reverse flotation tailings processed by concentration and defoaming are regrinded, and the reverse flotation tailings The coarse-grained intergrowth monomers in the process are dissocia...

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Abstract

The invention relates to the technical field of hematite reverse flotation tailings, in particular to a hematite reverse flotation tailings re-election process, which is characterized in that the stage grinding of lean hematite, magnetic separation-gravity separation-anion reverse The reverse flotation tailings in the flotation combined process are re-selected, that is, the reverse flotation tailings are concentrated, then ground to a particle size of -320 mesh with a content of more than 90%, and then subjected to weak magnetic separation, strong magnetic separation-reverse flotation Operation, recovery of magnetic minerals in the reverse flotation tailings, the advantages of the present invention: firstly, the reverse flotation tailings are concentrated and defoamed to reduce the foam in the pulp, which is beneficial to the subsequent sorting operation. The reverse flotation tailings after concentration and defoaming undergo regrinding, weak magnetic, strong magnetic, reverse flotation operations of roughing, selection and three-stage sweeping to decompose the coarse-grained intergrowth monomers in the reverse flotation tailings Separation, separation and recovery of metals in reverse flotation tailings, reducing metal loss and lowering the final tailings grade. The process is simple, the number of equipment is small, and the occupied area is small.

Description

technical field [0001] The invention relates to the technical field of hematite reverse flotation tailings, in particular to a hematite reverse flotation tailings re-election process. 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 "- comprehensive tailings...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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