Method for separating collophanite

A beneficiation method, collophosite technology, applied in flotation, solid separation, etc., to achieve the effects of reducing energy consumption and dosage of chemicals, high selectivity, and simplifying the drug system

Inactive Publication Date: 2010-12-08
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Each technique has its own advantages, but also has obvious deficiencies, and up to now, there is no patent related to the method for removing impurities of trioxide (sesquioxide) in phosphate rock

Method used

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  • Method for separating collophanite
  • Method for separating collophanite
  • Method for separating collophanite

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Experimental program
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Effect test

Embodiment 1

[0043] Silica colloidal ore P 2 o 5 25.64%, MgO 2.65%, SiO 2 13.24%, Al 2 o 3 3.03%, Fe 2 o 3 1.42%. The process of beneficiation and impurity removal includes: coarse grinding of the raw ore (grinding fineness -0.074mm grain size accounts for 45%), adding water to control the pulp concentration to 35%; Sulfuric acid 10kg / t, stearic acid 350g / t, roughing for 6 minutes once, the flotation foam is tailings containing magnesium, and the pulp in the tank is further removed from sulfur (pyrite); the pulp in the tank is reverse flotation for the first time The chemical system used for desulfurization is: xanthate 50g / t, roughing for 6 minutes once, the flotation foam is the first sulfur-containing tailings, and the pulp in the tank is further desiliconized; the pulp in the tank is reverse flotation and desiliconized roughing for 4 times , 4 minutes each time, the reagent system for each roughing is: dodecylamine 35g / t, the flotation foam is merged into silicon-containing t...

Embodiment 2

[0047] Silica colloidal ore P 2 o 5 25.80%, MgO 2.78%, SiO 2 13.54%, Al 2 o 3 3.12%, Fe 2 o 3 1.35%. The process of beneficiation and impurity removal includes: coarse grinding of the raw ore (grinding fineness -0.074mm grain size accounts for 55%), adding water to control the pulp concentration to 35%; Sulfuric acid 10kg / t, oleic acid 350g / t, roughing for 6 minutes once, the flotation foam is tailings containing magnesium, and the pulp in the tank is further desulfurized (pyrite); the pulp in the tank is desulfurized by reverse flotation for the first time The chemical system used is: xanthate 50g / t, roughing for 6 minutes once, the flotation foam is the first sulfur-containing tailings, and the pulp in the tank is further desiliconized; the pulp in the tank is reverse flotation desiliconized roughing for 4 times, 4 minutes each time, the reagent system for each roughing is: dodecylamine 35g / t, the flotation foam is merged into silicon-containing tailings, the slurr...

Embodiment 3

[0051] Silica colloidal ore P 2 o 5 24.84%, MgO 2.87%, SiO 2 14.32%, Al 2 o 3 3.23%, Fe 2 o 3 1.26%. The process of beneficiation and impurity removal includes: rough grinding of raw ore (grinding fineness -0.074mm grain size accounts for 65%), adding water to control the pulp concentration to 35%; Sulfuric acid 10kg / t, oleic acid 350g / t, roughing for 6 minutes once, the flotation foam is tailings containing magnesium, and the pulp in the tank is further desulfurized (pyrite); the pulp in the tank is desulfurized by reverse flotation for the first time The chemical system used is: xanthate 50g / t, roughing for 6 minutes once, the flotation foam is the first sulfur-containing tailings, and the pulp in the tank is further desiliconized; the pulp in the tank is reverse flotation desiliconized roughing for 4 times, 4 minutes each time, the reagent system for each roughing is: dodecylamine 35g / t, the flotation foam is merged into silicon-containing tailings, the slurry in ...

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Abstract

The invention relates to a method for separating collophanite, which is characterized by comprising the following steps of: (1) coarsely grinding raw collophanite; (2) performing reverse floatation on the grinding product to remove magnesium; (3) reacting floatation base flow of the step (2) with a desulfurization floatation medicament for reverse floatation to remove sulfur; (4) reacting the floatation base flow in the step (3) with a desilicification floatation medicament for reverse floatation to remove silicon; (5) performing intensity magnetic separation on the floatation base flow in the step (4) to remove iron; (6) regrinding a non-magnetic product in the step (5); (7) reacting the grinding product in the step (6) with a desulfurization floatation medicament for reverse floatation to remove sulfur; and (8) reacting the floatation base flow in the step (7) with a dealumnization floatation medicament for reverse floatation to remove aluminum to obtain aluminum-containing floatation foam and the floatation base flow, wherein the floatation base flow is the final phosphorus concentrate. The method can perform floatation at normal temperature and even low temperature to obtain phosphorus concentrate, and has the advantages of high separation property, low energy consumption and effective improvement of the P2O5 recovery rate.

Description

technical field [0001] The invention relates to a method for beneficiating collophosite, which relates to a method for obtaining phosphate concentrate by beneficiating and removing impurities from phosphate rock, especially middle and low grade silicon-calcium collophosite. Background technique [0002] Phosphate minerals are important chemical raw materials. With the development of society and economy, the demand for phosphate rocks is increasing, while the reserves of high-grade phosphate rocks that are easy to mine and select are decreasing day by day. Therefore, how to effectively and economically enrich the poor and refractory phosphate rock has attracted widespread attention in the world's phosphate rock industry. Especially the beneficiation technology of sedimentary siliceous-calcium collophosite with large reserves and difficult beneficiation is more eye-catching. Sedimentary phosphorite ore (the phosphorus-containing mineral is collophoste) is the most important p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03B1/00B03D1/004B03D101/02B03D103/06
Inventor 魏明安任爱军李松清祁宗郑桂兵曾克文刘水红田祎兰张云海
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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