Selective flocculation reverse flotation desilication process of collophanite containing primary slime

A technology of reverse flotation desiliconization and colloidal phosphate rock, which is applied in the direction of selective deposition, solid separation, etc., can solve the problems of large temperature influence, large floating amount of flotation concentrate, and low temperature, so as to achieve good adaptability, The effect of avoiding adverse effects

Active Publication Date: 2011-04-13
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of positive flotation desiliconization are: the floating amount of flotation concentrate is too large, accounting for more than 80% of the raw ore, and anion collectors such as fatty acids are greatly affected by temperature, low temperature, large collectors
It is difficult to balance defoaming and foaming, the consumption of chemicals is large, the cost is high, and the effect on the original slime is poor

Method used

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  • Selective flocculation reverse flotation desilication process of collophanite containing primary slime
  • Selective flocculation reverse flotation desilication process of collophanite containing primary slime
  • Selective flocculation reverse flotation desilication process of collophanite containing primary slime

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Example 1. refer to figure 1 . A selective flocculation reverse flotation desiliconization process for collophosite containing primary ore slime, adding a regulator to the pulp after reverse flotation demagnesization of collophosite containing primary ore slime to make the pH of the pulp = 9.5, and then Add dispersant, flocculant and collector for roughing, the roughing tank is concentrated ore; the roughing foam is added to the collector, and then be selected, the selected foam is used as tailings, and the selected tank is returned as middle ore Rough separation; the adjusting agent is sodium hydroxide or sodium carbonate; the dispersant is water glass, the consumption is 1.0kg / t raw ore, or the phosphate of alkali metal, the consumption is 150g / t raw ore; the flocculant It is anionic starch, and the dosage is 200g / t raw ore; the collector is alkyl ether propylamine or alkylpropylenediamine, the rough selection amount is 200g / t raw ore, and the concentration dosage i...

Embodiment 2

[0033] Example 2. refer to figure 2 . A selective flocculation reverse flotation desiliconization process for collophosite containing primary ore slime, adding a regulator to the pulp after reverse flotation demagnesium containing collophosite containing primary ore slime to make the pH of the pulp = 10.5, and then Add dispersant, flocculant, and collector for roughing, and the roughing tank is the concentrate; after the roughing foam is added with the collector, it is selected, and the selected foam is used as tailings, and the selected tank is used as middle ore and The concentrate in the roughing tank is combined into a mixed phosphorus concentrate; the regulator is sodium hydroxide or sodium carbonate; the dispersant is water glass, and the dosage is 3.0kg / t raw ore, or the phosphate of alkali metal, the dosage is 750g / t raw ore; the flocculant is anionic starch, the dosage is 1000g / t raw ore; the collector is alkyl ether propylamine or alkyl propylenediamine, the rough...

Embodiment 3

[0034] Example 3. refer to figure 1 . A selective flocculation reverse flotation desiliconization process for collophosite containing primary ore slime, adding a regulator to the pulp after reverse flotation demagnesization of collophosite containing primary ore slime to make the pH of the pulp = 9.9, and then Add dispersant, flocculant and collector for roughing, the roughing tank is concentrated ore; the roughing foam is added to the collector, and then be selected, the selected foam is used as tailings, and the selected tank is returned as middle ore Rough selection; the adjusting agent is sodium hydroxide or sodium carbonate; the dispersant is water glass, the consumption is 1.8kg / t raw ore, or the phosphate of alkali metal, the consumption is 400g / t raw ore; the flocculant It is anionic starch, and the dosage is 580g / t raw ore; the collector is alkyl ether propylamine or alkylpropylenediamine, the rough selection amount is 350g / t raw ore, and the concentration dosage is...

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Abstract

The invention relates to a selective flocculation reverse flotation desilication process of collophanite containing primary slime. The process comprises the following steps of: adding a modifier sodium hydroxide or sodium carbonate to the pulp obtained after the collophanite containing primary slime is subjected to the reverse flotation demagging till the pH value of the slurry is between 9.5 and10.5; then, adding a dispersant water glass or alkali metal phosphate, a flocculant anionic starch and a collector ethers propylamine or alkyl diaminopropane for roughing and obtaining concentrate ina roughing groove; and adding a collector to roughed foam, concentrating, using concentrated foam as tailing, returning middling in a concentrating groove for roughing or mixing with the concentrate in the roughing groove into mixed phosphor concentrate, wherein flotation machine impellers have the rotating speed of 1900-2400 rounds/min. In the process provided by the invention, the anti-flotation separation of siliceous gangue of quartz class is realized by adjusting the pH value of the slurry, adding various agents and selectively flocculating and inhibiting the collophanite according to the surface acting force of the various medicaments on the collophanite surface, and the optimal separation effect is achieved through adjusting the rotating speed of the flotation machine impellers.

Description

technical field [0001] The invention relates to a collophosite reverse flotation process, in particular to a collophosite selective flotation reverse flotation desiliconization process. Background technique [0002] Phosphate resources in my country are characterized by ancient ore-forming ages, P-containing 2 o 5 Medium and low grade, silicon-calcium refractory sedimentary phosphorite ore is the main body. Flotation of this type of phosphate rock not only requires the removal of carbonate gangue minerals (mainly dolomite), but also requires the discharge of some siliceous gangue minerals (mainly quartz, chalcedony, and feldspars). [0003] In phosphate rock flotation technology, desiliconization can be divided into positive flotation desilication and reverse flotation desilication. Positive flotation desiliconization is to use anion collectors such as fatty acids to float phosphate minerals and carbonate minerals (better floatability than phosphate minerals) under weakly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D3/06B03B1/00
Inventor 杨勇朱孔金柳佃义李艳冯春晖刘星强
Owner BLUESTAR LEHIGH ENG INST CO LTD
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