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A method for reducing phosphorus by physical beneficiation of skarn-type high-phosphorus molybdenum ore

A skarn-type, high-phosphorus-molybdenum technology, which is applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of high cost and loss of molybdenum metal, so as to improve grade, reduce covering and wrapping, reduce Effect of Phosphorus Grade

Inactive Publication Date: 2017-12-05
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of this process is high, and it will produce toxic and harmful leaching waste liquid that needs to be treated, and at the same time, it will cause about 0.5% loss of molybdenum metal

Method used

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  • A method for reducing phosphorus by physical beneficiation of skarn-type high-phosphorus molybdenum ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] With Mo content being 0.13%, the phosphorus-molybdenum ore of P content 0.12% is raw material, utilizes technology of the present invention, carries out following steps, as figure 1 :

[0036] (1) Crushing: The raw ore is crushed and screened by a crusher, and the raw ore with a particle size of +3mm is returned for crushing until the particle size of all the raw ore reaches the -3mm level.

[0037] (2) Grinding: For the crushed -3mm raw ore, use a rod mill or a ball mill for closed-circuit grinding. At the same time, 600g / t of inhibitor water glass and 400g / t of sodium hexametaphosphate were added to the mill, and the raw ore was ground to -0.075mm content of 61.0%.

[0038] (3) Flotation roughing operation: For the raw ore sample that has been ground, firstly stir and adjust the slurry to control the concentration of the slurry to 35%, and then add kerosene 240g / t, 2 # The oil is 60g / t, and the roughing operation is carried out in the flotation machine. The operati...

Embodiment 2

[0044] Be that 0.12% with Mo content, the phosphorus-molybdenum ore of P content 0.18% is raw material, utilize technology of the present invention, carry out following steps, as figure 1 :

[0045] (1) Crushing: The raw ore is crushed and screened by a crusher, and the raw ore with a particle size of +3mm is returned for crushing until the particle size of all the raw ore reaches the -3mm level.

[0046] (2) Grinding: For the crushed -3mm raw ore, use a rod mill or a ball mill for closed-circuit grinding operations, and at the same time add 800g / t of water glass, low molecular weight acrylic acid and maleic anhydride to the mill. The copolymer is 400g / t, and the raw ore is ground to -0.075mm with a content of 71.5%.

[0047] (3) Flotation roughing operation: For the raw ore sample that has been ground, firstly stir and adjust the slurry to control the concentration of the slurry to 31%, and then add kerosene 280g / t, 2 # The oil is 70g / t, and the roughing operation is carrie...

Embodiment 3

[0053] Be that 0.14% with Mo content, the phosphorus-molybdenum ore of P content 0.17% is raw material, utilize technology of the present invention, carry out following steps, as figure 1 :

[0054] (1) Crushing: The raw ore is crushed and screened by a crusher, and the raw ore with a particle size of +3mm is returned for crushing until the particle size of all the raw ore reaches the -3mm level.

[0055] (2) Grinding: For the crushed -3mm raw ore, use a rod mill or a ball mill for closed-circuit grinding operations. At the same time, add 700g / t of water glass and 500g / t of low molecular weight sodium polyacrylate to the mill to grind the raw ore To -0.075mm content 73.8%.

[0056] (3) Flotation roughing operation: For the raw ore sample that has been ground, firstly stir and adjust the slurry to control the concentration of the slurry to 34%, and then add kerosene 360g / t, 2 # The oil is 80g / t, and the roughing operation is carried out in the flotation machine. The operatio...

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Abstract

The invention discloses a physical concentration and phosphorus reduction method for a skarn-type high-phosphorus molybdenum ore. The physical concentration and phosphorus reduction method comprises the following steps of (1) crushing, namely crushing raw ores by using a crusher, sieving, and returning a +3mm-grade raw ore to crush until the particle size of the raw ore is up to the -3mm grade; (2) grinding the ores, namely adding the crushed -3mm-grade raw ore into raw ore grinding equipment to carry out closed-circuit ore grinding operation, meanwhile, adding 500-1000g / t of water glass and 250-800g / t of a phosphate mineral inhibitor into a grinding machine, and grinding the raw ore until the particle size is up to the -0.075mm grade and the phosphorus content is up to 55-75%; (3) carrying out roughing operation; (4) carrying out scavenging operation; (5) regrinding a roughed molybdenum concentrate, namely adding 100-280g / t of a sulfur inhibitor and 150-300g / t of a phosphate mineral inhibitor to regrind the roughed molybdenum concentrate in roughed molybdenum concentrate regrinding equipment until the particle size is up to the -0.045mm grade and the phosphorus content is up to 70-95%; and (6) carrying out fine flotation operation. By using the physical concentration and phosphorus reduction method, the phosphorus content of a molybdenum concentrate product can be reduced to be lower than the standard, and a high-quality molybdenum concentrate product can be obtained.

Description

technical field [0001] The invention relates to the technical field of beneficiation and enrichment of skarn-type high-phosphorus-molybdenum ore, in particular to a method for reducing phosphorus through physical beneficiation of skarn-type high-phosphorus-molybdenum ore, which can obtain high-quality molybdenum concentrate with qualified impurity phosphorus content Minerals. The invention is applicable to various skarn-type high-phosphorus molybdenum ores to produce high-quality molybdenum concentrates containing phosphorus up to the standard through a physical beneficiation process. Background technique [0002] Molybdenum is a silver-white rare metal, which is widely used in metallurgy, electrical, chemical, aerospace and other industries due to its advantages such as high strength, high melting point, corrosion resistance and abrasion resistance. It is an important basic material for high-tech, national modernization, and modern national defense construction. It occupi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03D1/018B03D101/06B03D101/04B03D101/02B03D103/02
CPCB03B7/00B03D1/018B03D2201/02B03D2201/04B03D2201/06B03D2203/025
Inventor 毛益林杨进忠陈晓青严伟平王秀芬刘能云
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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