Phosphorite double-reverse flotation process

A double reverse flotation and reverse flotation magnesium removal technology, applied in flotation, solid separation, etc., can solve problems such as high viscosity, difficult engineering practice, and interference with normal flotation

Active Publication Date: 2012-05-09
BLUESTAR LEHIGH ENG INST CO LTD
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Problems solved by technology

[0009] The above double reverse flotation process for phosphate rock can partially weaken the influence of ore slime on reverse flotation desiliconization, and can improve the separation efficiency to a certain extent, but the above process is only effective for specific ores or ores that are easy to select. For ores that are difficult to select, because t

Method used

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  • Phosphorite double-reverse flotation process

Examples

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Effect test

Embodiment 1

[0021] Embodiment 1, with reference to figure 1 , a double reverse flotation process for phosphate rock, its steps are as follows:

[0022] (1) Reverse flotation magnesium removal: After the phosphate rock is ground to the particle size required by flotation, add reverse flotation magnesium removal regulator 5kg / t raw ore and magnesium removal collector 0.8kg / t raw ore to carry out magnesium roughing operation , the magnesium roughing tank is the demagnesium coarse concentrate; the magnesium roughing foam is added with 3 kg / t raw ore demagnesium regulator, and then the magnesium re-election operation is carried out, and the magnesium re-selection tank is the demagnesium medium ore, Mine returns to magnesium roughing, magnesium re-selection foam is carbonate tailings;

[0023] (2) Desliming and pulping of the demagnesium coarse concentrate: The demagnesium coarse concentrate enters the desliming device to remove the particles smaller than 10 microns. The mass concentration of ...

Embodiment 2

[0027] Embodiment 2, with reference to figure 1 , a double reverse flotation process for phosphate rock, its steps are as follows:

[0028] (1) Reverse flotation magnesium removal: After the phosphate rock is ground to the particle size required by flotation, add reverse flotation magnesium removal regulator 20kg / t raw ore and magnesium removal collector 3.5kg / t raw ore to carry out magnesium roughing operation , the magnesium roughing tank is the demagnesium coarse concentrate; after the magnesium roughing foam is added with 2 kg / t raw ore demagnesium regulator, the magnesium re-election operation is carried out, and the magnesium re-selection tank is the demagnesium medium ore, Mine returns to magnesium roughing, magnesium re-selection foam is carbonate tailings;

[0029] (2) Desliming and pulping of the demagnesium coarse concentrate: The demagnesium coarse concentrate enters the desliming device to remove the particles smaller than 38 microns. More than 25%; the sand ent...

Embodiment 3

[0034] Embodiment 3, with reference to figure 1 , a double reverse flotation process for phosphate rock, its steps are as follows:

[0035](1) Reverse flotation magnesium removal: After the phosphate rock is ground to the particle size required by flotation, add reverse flotation magnesium removal regulator 10kg / t raw ore and magnesium removal collector 2.5kg / t raw ore to carry out magnesium roughing operation , the magnesium roughing tank is demagnesium coarse concentrate; after the magnesium roughing foam is added with 0.5 kg / t raw ore demagnesium regulator, the magnesium re-election operation is carried out, and the magnesium re-selection tank is the demagnesium medium ore, Mine returns to magnesium roughing, magnesium re-selection foam is carbonate tailings;

[0036] (2) Desliming and pulping of the demagnesium coarse concentrate: The demagnesium coarse concentrate enters the desliming device to remove the particles smaller than 20 microns. More than 25%; the sand enters...

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Abstract

The invention relates to phosphorite double-reverse flotation process, which comprises reverse flotation de-magging, desliming and pulp mixing and reverse flotation desilicication. The phosphorite double-reverse flotation process is characterized in that ore pulp after reverse flotation de-magging realizes desliming, the concentration of a desliming bottom flow and the content of fine particles are controlled, and reverse flotation desilicication is realized after pulp mixing of the bottom flow. The phosphorite double-reverse flotation process can eliminate or mostly remove interference of slime to reverse flotation desilicication, increases flotation efficiency, more importantly, improves fluidity of flotation foam, and lead phosphorite double-reverse flotation to be engineered.

Description

technical field [0001] The invention relates to a flotation process of phosphate rock, in particular to a double reverse flotation process of phosphate rock. Background technique [0002] Flotation is the most important method for processing phosphate rock resources. For silicon-calcium phosphate rock, in order to improve the quality of the concentrate, it is currently more effective to introduce reverse flotation gangue minerals (carbonate minerals or silicate minerals) . The reverse flotation operation is carried out in the process of "floating less and suppressing more", which not only ensures high selectivity in the flotation process, but also is easy to control and stabilize the flotation process, reducing mechanical inclusions and flotation in the flotation process. Difficulty in foam delivery. This is one of the important advantages of single reverse flotation or double reverse flotation compared with forward flotation or forward-reverse flotation process. Phosphat...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/08
Inventor 杨勇刘升林钱押林朱孔金冯春晖刘星强
Owner BLUESTAR LEHIGH ENG INST CO LTD
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