Method for separating collophanite

A beneficiation method and a technology for collophosphate rock, which are applied in flotation, solid separation and other directions to achieve the effects of reducing energy consumption and dosage of chemicals, high selectivity, and simplifying the system of chemicals

Inactive Publication Date: 2012-11-28
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

Examples

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Embodiment 1

[0043] Silica-calcium collophane 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: rough grinding of the original ore (grinding fineness -0.074mm grain size accounts for 45%), adding water to control the slurry concentration to 35%; the reagent system used in the reverse flotation of coarse grinding products for demagnesization is: adjustment Sulfuric acid 10kg / t, stearic acid 350g / t, a rough separation of 6 minutes, the flotation foam is magnesium-containing tailings, the slurry in the tank is further desulfurized (pyrite); the slurry in the tank is the first reverse flotation The reagent system used for desulfurization is: xanthate 50g / t, a rough separation of 6 minutes, the flotation foam is the first sulfur-containing tailings, and the slurry in the tank is further desiliconized; the slurry in the tank is desiliconized by reverse flotation for 4 times , Each 4 minutes, the reagent syst...

Embodiment 2

[0047] Silica-calcium collophane 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: rough grinding of the original ore (grinding fineness -0.074mm grain size accounted for 55%), adding water to control the slurry concentration to 35%; the reagent system used in the reverse flotation of coarse grinding products for demagnesization is: adjustment Sulfuric acid 10kg / t, oleic acid 350g / t, a rough separation of 6 minutes, the flotation foam is magnesium-containing tailings, the slurry in the tank is further desulfurized (pyrite); the slurry in the tank is desulfurized by reverse flotation for the first time The reagent system adopted is: Xanthate 50g / t, a rough separation of 6 minutes, the flotation foam is the first sulfur-containing tailings, and the slurry in the tank is further desiliconized; the slurry in the tank is desiliconized by reverse flotation for 4 times. Each 4 minutes, the reagen...

Embodiment 3

[0051] Silica-calcium collophane 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 the original ore (grinding fineness -0.074mm grain size accounts for 65%), adding water to control the slurry concentration to 35%; the reagent system used in the reverse flotation demagnesization of the rough grinding product is: adjustment Sulfuric acid 10kg / t, oleic acid 350g / t, a rough separation of 6 minutes, the flotation foam is magnesium-containing tailings, the slurry in the tank is further desulfurized (pyrite); the slurry in the tank is desulfurized by reverse flotation for the first time The reagent system adopted is: Xanthate 50g / t, a rough separation of 6 minutes, the flotation foam is the first sulfur-containing tailings, and the slurry in the tank is further desiliconized; the slurry in the tank is desiliconized by reverse flotation for 4 times. Each 4 minutes, the reagent s...

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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] A method for beneficiation of collophane ore relates to a method for obtaining phosphate concentrate by beneficiation and impurity removal of phosphate ore, especially low- and medium-grade silica-calcium collophane. Background technique [0002] Phosphate minerals are important chemical raw materials. With the development of social economy, the demand for phosphate ore is increasing, while the reserves of high-grade phosphate ore that are easy to mine and easy to choose are decreasing. Therefore, how to efficiently and economically enrich the poor and difficult-to-select phosphate rock has aroused widespread concern in the world phosphate rock community. In particular, the beneficiation technology of sedimentary siliceous-calcium collophane with large reserves and difficult beneficiation is more attention-grabbing. Sedimentary phosphate rock (the phosphorous mineral is collophane) is the most important phosphate rock in the world's phosphate rock resource...

Claims

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Application Information

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Patent Type & Authority Patents(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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