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Phosphate rock floating process

A phosphate rock and flotation technology, applied in flotation, solid separation and other directions, can solve the problems of large consumption of flotation reagent collectors, decreased reverse flotation efficiency, fine-grain inclusions, etc., and reduce the consumption of flotation reagents. , Improve the sorting efficiency and save the effect of chemicals

Inactive Publication Date: 2007-08-22
WUHAN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

Because dolomite and phosphorus minerals have similar buoyancy under alkaline positive flotation conditions, a large number of fine-grained dolomite will inevitably compete with phosphorus minerals to adsorb flotation reagents in the positive flotation of phosphate rocks. As a result, the coarse-grained grade of phosphorus minerals in positive flotation is difficult to float, while the fine-grained grade is seriously mixed, and the consumption of flotation reagents, especially collectors, is often large.
This effect of particle size will continue to the reverse flotation process and lead to a decrease in reverse flotation efficiency

Method used

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  • Phosphate rock floating process

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Embodiment 1

[0035] As shown in Figure 1, a kind of phosphate rock flotation process, it comprises the steps:

[0036] 1) After the raw phosphate ore is finely ground, the raw ore pulp enters a classification device (such as a hydrocyclone) to divide the raw ore pulp into two parts: coarse-grained and fine-grained according to the particle size; the fine-grained part The particle size of the raw ore pulp is less than or equal to 38 microns, and the particle size of the coarse-grained part of the raw ore pulp is greater than 38 microns;

[0037] 2a) Part of the coarse-grained raw ore pulp is concentrated to a pulp with a concentration of 55%, and then flows into the stirring tank, and then respectively adds a positive flotation regulator and a positive flotation collector to the pulp to adjust the slurry. The positive flotation regulator, positive flotation The addition amount of flotation collectors is 2kg / t coarse-grained part of raw ore pulp and 1.36kg / t coarse-grained part of raw ore pu...

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Abstract

The phosphate rock floating process is one phosphate rock grading forward-backward floating process, in which the raw ore pulp is first separated into two parts of different fineness and then forward-backward floated in two separated branches. The coarse ore pulp is made to separated in high concentration so as to save floating chemical; while the fine ore pulp is floated through adding dispersant to raise the floating efficiency. The grading floating process can avoid the mutual interference between coarse and fine grains, and thus has raised separating efficiency, raised floated concentrate quality, lowered floating chemical consumption and raised technological and economic indexes.

Description

technical field [0001] The invention relates to a phosphate rock flotation process. Background technique [0002] Flotation is one of the main methods of phosphate ore beneficiation. Due to the difference in phosphate rock geological origin, impurity type and content, phosphate rock flotation can have a variety of processes, such as the commonly used single forward flotation process, single reverse flotation process, forward-reverse flotation process, reverse-positive Flotation process, double reverse flotation process, etc. [1-7] . [0003] Si-calcium phosphate rock occupies a dominant position in my country's phosphate rock resources, and its flotation process mainly includes ① (phosphorus mineral) single forward flotation process, ② (silicon or magnesium) single reverse flotation process, ③ forward-reverse Flotation process, ④ reverse-positive flotation process, ⑤ double reverse flotation process, etc. [1-7] . In phosphate rock flotation, the particle size and distrib...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/001B03B1/00B03D101/00B03D103/04
Inventor 魏以和
Owner WUHAN INSTITUTE OF TECHNOLOGY
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