A kind of screening method of molybdenum concentrate

A screening method and technology of molybdenum concentrate, applied in the direction of cyclone device, etc., can solve the problems of low recovery rate of molybdenum concentrate and low resource utilization rate, and achieve the goal of reducing application cost, high equipment utilization rate, and less waste dust generation Effect

Active Publication Date: 2016-01-20
ZHEJIANG TAIZHENG MOLYBDENUM IND DEVCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the deficiencies of low resource utilization rate and low recovery rate of molybdenum concentrate in the molybdenum concentrate screening method in the prior art, and provide a screening method for molybdenum concentrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for screening molybdenum concentrate, said method comprising the following steps:

[0027] (1) Pretreatment of molybdenum raw ore: the molybdenum raw ore with a particle size of 500mm is crushed by two stages and one closed circuit to obtain fine ore with a particle size of about 10mm. After coarse crushing and then coarse screening by vibrating screen, the molybdenum raw ore retained by the vibrating screen is finely crushed by the cone crusher and then returned to the vibrating screen for screening until all the molybdenum raw ore passes through the vibrating screen. The selected grade of the molybdenum raw ore is 0.2% ;

[0028] (2) Grinding and grading: the fine ore in step (1) is processed through a closed-circuit grinding process to obtain a grinding product, and the particle size of the grinding product is 200 mesh, accounting for 50%, and then closed-circuit through a hydrocyclone Grading, obtaining overflow;

[0029] (3) Flotation: add flotation agen...

Embodiment 2

[0033] A method for screening molybdenum concentrate, said method comprising the following steps:

[0034] (1) Molybdenum raw ore pretreatment: the molybdenum raw ore with a particle size of 50mm is crushed by two stages and one closed circuit to obtain fine ore with a particle size of about 10mm. After coarse crushing and then coarse screening by vibrating screen, the molybdenum raw ore retained by the vibrating screen is finely crushed by the cone crusher and then returned to the vibrating screen for screening until all the molybdenum raw ore passes through the vibrating screen. The selected grade of the molybdenum raw ore is 0.2% ;

[0035] (2) Grinding and grading: the fine ore in step (1) is processed through a closed-circuit grinding process to obtain grinding products, and the particle size of the grinding products is 200 mesh, accounting for 60%, and then closed-circuit through the hydrocyclone Grading, obtaining overflow;

[0036] (3) Flotation: add flotation agent ...

Embodiment 3

[0040] A method for screening molybdenum concentrate, said method comprising the following steps:

[0041] (1) Pretreatment of molybdenum raw ore: the molybdenum raw ore with a particle size of 500mm is crushed by two stages and one closed circuit to obtain fine ore with a particle size of about 10mm. After coarse crushing and then coarse screening by vibrating screen, the molybdenum raw ore retained by the vibrating screen is finely crushed by the cone crusher and then returned to the vibrating screen for screening until all the molybdenum raw ore passes through the vibrating screen. The selected grade of the molybdenum raw ore is 0.2% ;

[0042] (2) Grinding and grading: The fine ore in step (1) is processed through a closed-circuit grinding process to obtain a grinding product, and the particle size of the grinding product is 200 mesh, accounting for 55%, and then closed-circuit through a hydrocyclone Grading, obtaining overflow;

[0043] (3) Flotation: add flotation agen...

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Abstract

The present invention relates to a screening method for molybdenum concentrate, aiming at solving the problems of low resource utilization rate and low recovery rate of molybdenum concentrate in the screening method of molybdenum concentrate in the prior art. The method comprises the following steps: (1) Molybdenum raw ore pretreatment Treatment: Molybdenum raw ore is processed to obtain fine ore; (2) Grinding and grading: Grinding the fine ore to obtain the grinding product, and then passing through the closed-circuit classification of the hydrocyclone to obtain the overflow; (3) Flotation: Add flotation agents to the overflow after grinding and grading, and get rough concentrate through molybdenum ore roughing and dense classification; (4) selection: the rough concentrate obtained in step (3) is passed through After the regrinding process, it enters into the selection process, and after two selections and three sweeps, the molybdenum concentrate is obtained. (5) Concentrate dehydration: Molybdenum concentrate is concentrated and then further squeezed and dehydrated to obtain finished molybdenum concentrate. The screening method of the present invention has high utilization rate of raw molybdenum ore resources, produces less waste residue and waste dust in the screening process, and is friendly to the production environment.

Description

technical field [0001] The invention belongs to the technical field of molybdenum ore finishing, and in particular relates to a screening method of molybdenum concentrate. Background technique [0002] Molybdenum is mainly used in the iron and steel industry, and is also widely used in other alloys and chemical industries. It is an important material in the electronics industry. Because it is not eroded by air at room temperature, it does not react with hydrochloride or hydrofluoric acid. Molybdenum is not easy to change, while adding molybdenum can greatly improve the strength, toughness, heat resistance, corrosion resistance and weldability of various alloy steels. With the rapid development of China's economy, the production capacity of molybdenum concentrate in China has been expanding. Molybdenum The output of concentrate is in a trend of rising slightly. However, the current screening method of molybdenum concentrate has a low recovery rate of molybdenum concentrate, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B04C9/00
Inventor 季小华王建仁
Owner ZHEJIANG TAIZHENG MOLYBDENUM IND DEVCO
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