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Collophanite flotation collector and application thereof

A technology of collophosphate rock and collector, applied in flotation, solid separation and other directions, can solve the problems of high energy consumption, unfavorable environmental protection, etc., and achieve the effect of saving heating costs, less coal burning, and simplifying the flotation process.

Active Publication Date: 2013-03-20
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is: heating and positive flotation, and the temperature must first reach 50-55°C to get a better sorting effect, and the energy consumption is very large
At the same time, the addition of organic sulfonated naphthalene and other substances in positive flotation is not conducive to environmental protection. Therefore, the development of environmentally friendly agents and processes that can achieve flotation at natural temperature will be crucial to solve the problem of refractory low-grade collophanite

Method used

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  • Collophanite flotation collector and application thereof
  • Collophanite flotation collector and application thereof
  • Collophanite flotation collector and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Taking the three-layer ore (medium and low-grade phosphate rock) of Hubei Dayukou phosphate rock as raw material, the combination agent provided by the present invention is used as collector to investigate the flotation effect

[0035] Flotation process and reagent addition see figure 1 .

[0036] Add 400g of raw ore into the grinding machine each time, and grind to -0.074mm to be 95%. The test is carried out on a 1L hanging tank flotation machine. Adjust the flotation temperature and follow the dosing sequence and dosage shown in the test process. Dosing, every time the dosing is completed, stir for 3 minutes, and finally inflate for flotation. Separately filter the foam (i.e. concentrate) and the product in the tank (i.e. tailings), dry, weigh and send to the laboratory. (The following collectors 350g / t are based on the mass of the collector itself)

[0037] Inhibitor: polymeric lignosulfonate

[0038] Collector composition (mass ratio): mixed hydroxamic acid: C 18...

Embodiment 2

[0044] Taking the three-layer ore (medium and low-grade phosphate rock) of Hubei Dayukou phosphate rock as raw material, the combination agent provided by the present invention is used as collector to investigate the flotation effect

[0045] Flotation process see figure 2 . Add 400g of raw ore into the grinding machine each time, and grind to -0.074mm to be 95%. The test is carried out on a 1L hanging tank flotation machine. Adjust the flotation temperature and follow the dosing sequence and dosage shown in the test process. Dosing, every time the dosing is completed, stir for 3 minutes, and finally inflate for flotation. Separately filter the foam (i.e. concentrate) and the product in the tank (i.e. tailings), dry, weigh and send to the laboratory. (The following collectors 350g / t are based on the mass of the collector itself)

[0046] Inhibitor: polymerized lignosulfonate (molecular weight 2000-100000)

[0047] Collector composition (mass ratio): mixed hydroxamic acid:...

Embodiment 3

[0053] Taking the three-layer ore (medium and low-grade phosphate rock) of Hubei Dayukou phosphate rock as raw material, the combination agent provided by the present invention is used as collector to investigate the flotation effect

[0054] Flotation process see figure 1 . Add 400g of raw ore into the grinding machine each time, and grind to -0.074mm to be 95%. The test is carried out on a 1L hanging tank flotation machine. Adjust the flotation temperature and follow the dosing sequence and dosage shown in the test process. Dosing, every time the dosing is completed, stir for 3 minutes, and finally inflate for flotation. Separately filter the foam (i.e. concentrate) and the product in the tank (i.e. tailings), dry, weigh and send to the laboratory. (The following collectors 350g / t are based on the mass of the collector itself)

[0055] Inhibitor: polymeric lignosulfonate

[0056] Collector composition (mass ratio): mixed hydroxamic acid: C 18 Unsaturated fatty acid: OP-...

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Abstract

The invention discloses a collophanite flotation collector and application thereof. The collector consists of the following materials in percentage by mass: 55 to 75 percent of mixed hydroxamic acid. 24 to 44 percent of unsaturated fatty acid of C18 and 1 to 3 percent of OP-10 and is prepared by the method comprising the following steps of: mixing coconut oil and palm oil in a mass ratio of 2:1-2 to obtain mixed oil; heating the mixed oil until the mixed oil is melted; maintaining the temperature; adding hydroxylamine, NaOH or KOH into the mixed oil to react; and after the reaction, acidizing and separating the reactant to obtain mixed hydroxamic acid, wherein sodium carbonate serves as a modifier and sodium silicate and polymerized lignosulfonate serve as an inhibitor. The collector provided by the invention can realize positive floatation for low-grade collophanite at the normal temperature of between 25 and 35 DEG C.

Description

technical field [0001] The invention relates to a collophosite flotation collector and its application. Background technique [0002] The beneficiation and separation of collophosite is an international problem, but the separation difficulty of the same type of ore in foreign countries is far less than that in my country due to the coarse particle size and low dolomite content. Taking the Yichang area of ​​my country as an example, in the ore-forming three-layer ore, the MgO content of the upper lean ore is as high as 10.74%, and the lower lean ore has a high content of feldspar and silicate, SiO2 > 18%, Al 2 o 3 4.6%, Fe 2 o 3 1.8%. These impurities are not conducive to the preparation of phosphoric acid, and must be removed first to make the phosphorous concentrate meet certain quality requirements. In order to economically produce high-quality phosphoric acid, phosphorus compound fertilizer and a series of fine phosphorus chemical products. [0003] At present, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/01B03D101/02B03D103/06
Inventor 葛英勇姜振胜张敏张革利李洪强叶林
Owner CHINA NAT OFFSHORE OIL CORP
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