Application of a kind of inhibitor aa/amps in positive flotation demagnesization of phosphate rock

A technology of inhibitor and phosphate rock, which is applied in flotation, solid separation, etc., can solve the difficulty of flotation and separation of apatite and dolomite, restrict the comprehensive development and utilization of high magnesium phosphate rock, and treat acid-containing wastewater from tailings Difficulty and other problems, to achieve good selective inhibition, good industrial feasibility, and eliminate corrosion maintenance costs

A technology of inhibitor and phosphate rock, which is applied in flotation, solid separation, etc., can solve the difficulty of flotation and separation of apatite and dolomite, restrict the comprehensive development and utilization of high magnesium phosphate rock, and treat acid-containing wastewater from tailings Difficulty and other problems, to achieve good selective inhibition, good industrial feasibility, and eliminate corrosion maintenance costs

CN111036413BInactive Publication Date: 2021-01-26NORTHEASTERN UNIV LIAONING
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  • Application of a kind of inhibitor aa/amps in positive flotation demagnesization of phosphate rock

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Experimental program
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Effect test

Embodiment 1

[0037] The application of a kind of inhibitor AA / AMPS in the positive flotation magnesification of phosphate rock, the process flow chart of its implementation is shown in figure 1 , including the following operation process of positive flotation magnesium removal of high-magnesium and low-grade phosphate rock:

[0038] Step 1: Crushing and Grinding

[0039] Crushing and ball milling high-magnesium and low-grade phosphate rock to obtain phosphate rock powder; wherein, in the phosphate rock powder, the mass of the phosphate rock powder smaller than 74 μm accounts for 75% of the total mass of the phosphate rock powder;

[0040] Step 2: Blending

[0041] Put the phosphate rock powder in the XFG single-cell flotation machine, adjust the speed of the XFG single-cell flotation machine to 1700rpm, add deionized water and the inhibitor AA / AMPS solution, and stir and mix evenly, and carry out slurry mixing for 3 minutes. Obtain phosphate rock slurry; wherein, in the phosphate rock slur...

Embodiment 2

[0049] The application of an inhibitor AA / AMPS in positive flotation magnesification of phosphate rock, specifically includes the following operation process of positive flotation magnesification of high-magnesium and low-grade phosphate rock:

[0050] Step 1: Crushing and Grinding

[0051] Crushing and ball milling high-magnesium and low-grade phosphate rock to obtain phosphate rock powder; wherein, in the phosphate rock powder, the mass of phosphate rock powder particles smaller than 74 μm accounts for 80% of the total mass of the phosphate rock powder;

[0052] Step 2: Blending

[0053] Put the phosphate rock powder in the XFG single-cell flotation machine, adjust the speed of the XFG single-cell flotation machine to 1900rpm, add deionized water and the inhibitor AA / AMPS solution, and stir and mix evenly, and carry out slurry mixing for 3 minutes. Obtain phosphate rock slurry; wherein, in the phosphate rock slurry, the mass percentage concentration of phosphate rock is 20%...

Embodiment 3

[0061] The application of an inhibitor AA / AMPS in positive flotation magnesification of phosphate rock, specifically includes the following operation process of positive flotation magnesification of high-magnesium and low-grade phosphate rock:

[0062] Step 1: Crushing and Grinding

[0063] Crushing and ball milling high-magnesium and low-grade phosphate rock to obtain phosphate rock powder; wherein, in the phosphate rock powder, the mass of phosphate rock powder particles smaller than 74 μm accounts for 80% of the total mass of the phosphate rock powder;

[0064] Step 2: Blending

[0065] Put the phosphate rock powder in the XFG single-tank flotation machine, adjust the speed of the XFG single-tank flotation machine to 2100rpm, add deionized water and inhibitor AA / AMPS solution, stir and mix evenly, and perform slurry mixing for 3 minutes. Obtain phosphate rock slurry; wherein, in the phosphate rock slurry, the mass percentage concentration of phosphate rock is 25%, and the ...

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Abstract

The invention relates to the application of an inhibitor AA / AMPS in positive flotation demagnesization of phosphate rock, which belongs to the field of mineral processing and purification technology of phosphate rock. This application is to add inhibitor AA / AMPS in the process of positive flotation demagnesification of phosphate rock. Specifically, the inhibitor AA / AMPS is used to prepare phosphate rock pulp, wherein the mass concentration of the phosphate rock pulp is 20-25%; the inhibitor AA / AMPS accounts for 100-140 g / t of the phosphate rock pulp. Inhibitor AA / AMPS (acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer), for phosphate rock containing a lot of dolomite, under alkaline conditions, inhibits the flotation of dolomite by positive flotation process It can effectively increase the difference in flotation performance between apatite and dolomite, and facilitate the efficient removal of dolomite. In addition, the inhibitor AA / AMPS has the characteristics of strong selectivity of inhibitory performance, low cost, and simple use, etc. It can effectively reduce the magnesium content of phosphate concentrate, improve the quality of concentrate, and realize the flotation of high-magnesium and low-grade phosphate rock to reduce magnesium. Target.

Description

technical field [0001] The invention relates to the field of phosphate rock ore dressing and purification technology, in particular to the application of an inhibitor AA / AMPS in positive flotation demagnesization of phosphate rock. Background technique [0002] Phosphate rock usually refers to the general term of phosphate minerals that can be used economically, and is the most important basic mineral material of phosphorus chemical industry. Phosphate rock is used as the main raw material for the production of phosphate fertilizers and phosphate chemical products, and is used in industrial sectors such as medicine, food, matches, dyes, sugar, ceramics, and national defense. my country has abundant reserves of phosphate rock resources, which ranks second in the world. However, the reserves of high-grade phosphate rock in my country are low, and the complex and difficult-to-handle high-magnesium phosphate rock resources account for a large proportion. At present, high-magnes...

Claims

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Application Information

Patent Timeline
26 Jan 2021
Publication
CN111036413B
IPC
B03D1/00; B03D1/016; B03B9/00; B03D101/06; B03D103/06
CPC
B03B9/00; B03D1/00; B03D1/016; B03D2201/06; B03D2203/06
Inventors
姚金; 杨斌