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A method for treating phosphate rock tailings using a single positive flotation process

A phosphate ore tailings and positive flotation technology, applied in flotation, solid separation, etc., to achieve the effects of pollution mitigation, high quality concentrate products, and reasonable method design

Active Publication Date: 2017-11-14
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is aimed at the phosphorite tailings P in the prior art 2 o 5 To solve the problem of secondary recycling, provide a method with reasonable design, easy operation and good effect, using a single positive flotation process to treat phosphate rock tailings

Method used

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  • A method for treating phosphate rock tailings using a single positive flotation process

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Experimental program
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Effect test

Embodiment 1

[0016] Embodiment 1, with reference to accompanying drawing, a kind of method that adopts single positive flotation process to process phosphate rock tailings, its steps are as follows:

[0017] (1) Feed the phosphate ore tailings directly into the roughing flotation machine for a roughing, add appropriate amount of pH regulator, inhibitor and anion collector during the roughing, and choose NaCO as the pH regulator 3 , NaOH or lime, water glass and sodium lignosulfonate as the inhibitor, and fatty acid anion collector as the collector;

[0018] (2) The foam product of the roughing operation is classified according to the particle size of 325 mesh; the product of +325 mesh is sent to the grinding operation, and it is ground to the grinding fineness required by the flotation operation;

[0019] (3) The product ground through the ore grinding operation and the -325 purpose product are combined together and given to the secondary roughing operation;

[0020] (4) The foam product ...

Embodiment 2

[0021] Embodiment 2, in the step (1) of a kind of method that adopts single positive flotation process to process collophosite tailings described in embodiment 1, main component contains P by weight percentage in the described phosphate rock tailings 2 o 5 4.0~12.0%, MgO 2.0~18.0%, SiO 2 8.0-30.0%, and a small amount of other impurities.

Embodiment 3

[0022] Embodiment 3, in the step (2) of a method for processing collophosite tailings by a single positive flotation process described in embodiment 1 or 2, the +325 mesh product is given to the grinding operation, and ground to -325 mesh Accounted for 85 to 95%.

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Abstract

The present invention is a method for treating phosphate ore tailings by adopting a single positive flotation process. The phosphate ore tailings are directly fed into a roughing flotation machine for one roughing, and an appropriate amount of pH regulators and inhibitors are added during the roughing. , anion collector; the foam product of the roughing operation is classified according to the particle size of 325 mesh; the product of +325 mesh is sent to the grinding operation, and it is ground to the grinding fineness required by the flotation operation; it is ground after the grinding operation The product and the product of ‑325 purpose are put into the second roughing operation; the foam product of the second roughing is selected 3~4 times, and the product in the tank is swept 1~2 times to obtain the concentrate product. The grade and recovery rate of the final phosphorous concentrate obtained by the invention are high, the process is simple, and industrialization is easy to realize. It not only greatly alleviates the pollution caused by phosphate rock tailings to the environment, but also has great significance for the efficient utilization and recycling of phosphate rock resources in my country.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a method for treating phosphorite tailings by a single positive flotation process. Background technique [0002] my country is very rich in phosphate rock resources, and the resource base reserves rank second in the world, but more than 94% of them are medium and low-grade phosphate rocks. This kind of ore must be extracted from carbonate gangue and silicate gangue at the same time to meet the requirements of downstream operations. Require. At present, there are mainly three flotation processes for low-grade calcium silica colloidal phosphate rock: direct reverse flotation process, direct-reverse flotation process, reverse-direct flotation process, and double reverse flotation process. At present, my country is undergoing After mineral processing and sorting, a large amount of tailings are produced every year, of which w(P 2 o 5 ) = 4% to 10%, w(MgO) = 2% to 18%, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/02B03D1/08B03D101/00B03D103/06
Inventor 李丰钱押林曹效权刘星强张红茹李青海刘云涛
Owner BLUESTAR LEHIGH ENG INST CO LTD
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