Smashing and classifying technology for molybdenite

A molybdenite and process technology, which is applied in the field of molybdenite grinding and classification technology, can solve the problems of high production cost of grinding and classification, low content of ore easy to select, and influence on the recovery rate of molybdenum, so as to reduce the number of spare parts. Consumption, reduce maintenance intensity, improve the effect of molybdenum recovery rate

Inactive Publication Date: 2015-11-11
JINDUICHENG MOLYBDENUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process effectively solves the existing technical problems such as long process flow, many sets of equipment, high production cost of crushing and grading, low grading efficiency, low content of ore easy-to-select particle size, and influence on the recovery rate of molybdenum beneficiation. It has broad application prospects.

Method used

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  • Smashing and classifying technology for molybdenite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] combine figure 1 , the crushing and grading process of molybdenite in the present embodiment comprises the following steps:

[0023] Step 1. The molybdenite is roughly crushed by a gyratory crusher with a width of 160 mm at the ore discharge port to obtain a coarse crushed ore powder, and then the coarse crushed ore powder is screened once with a sieve with an aperture of 50 mm to obtain a primary oversize and primary undersize;

[0024] Step 2: Use a cone crusher with a width of 30 mm to carry out secondary crushing on the primary sieve material described in step 1 to obtain medium crushed ore powder, and then use a screen with an aperture of 50 mm to process the medium crushed ore powder Secondary sieving to obtain secondary oversize and secondary undersize; return the secondary oversize to the cone crusher for secondary crushing;

[0025] Step 3. Mix the primary undersize described in step 1 and the secondary undersize described in step 2, and then add it to the hi...

Embodiment 2

[0029] combine figure 1 , the crushing and grading process of molybdenite in the present embodiment comprises the following steps:

[0030] Step 1. The molybdenite is roughly crushed by a gyratory crusher with a width of 160 mm at the ore discharge port to obtain a coarse crushed ore powder, and then the coarse crushed ore powder is screened once with a sieve with an aperture of 50 mm to obtain a primary oversize and primary undersize;

[0031] Step 2: Use a cone crusher with a width of 35 mm to carry out secondary crushing treatment on the primary sieve material described in step 1 to obtain medium crushed ore powder, and then use a screen with an aperture of 50 mm to process the medium crushed ore powder Secondary sieving to obtain secondary oversize and secondary undersize; return the secondary oversize to the cone crusher for secondary crushing;

[0032] Step 3. Mix the primary undersize described in step 1 and the secondary undersize described in step 2, and then add it...

Embodiment 3

[0036] combine figure 1 , the crushing and grading process of molybdenite in the present embodiment comprises the following steps:

[0037] Step 1. The molybdenite is roughly crushed by a gyratory crusher with a width of 160 mm at the ore discharge port to obtain a coarse crushed ore powder, and then the coarse crushed ore powder is screened once with a sieve with an aperture of 50 mm to obtain a primary oversize and primary undersize;

[0038] Step 2: Use a cone crusher with a width of 32 mm to carry out secondary crushing on the primary sieve material described in step 1 to obtain medium crushed ore powder, and then use a screen with an aperture of 50 mm to process the medium crushed ore powder Secondary sieving to obtain secondary oversize and secondary undersize; return the secondary oversize to the cone crusher for secondary crushing;

[0039]Step 3. Mix the primary undersize described in step 1 and the secondary undersize described in step 2, and then add it to the hig...

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Abstract

The invention provides a smashing and classifying technology for molybdenite. The technology comprises the following steps that first, a gyratory crusher is used for conducting coarse crushing treatment on the molybdenite, so that coarsely-crushed mineral powder is obtained; then primary screening is carried out, and accordingly primary oversize products and primary screen underflow are obtained; second, a cone crusher is used for conducting intermediate crushing treatment on the primary oversize products, so that intermediately-crushed mineral powder is obtained; then secondary screening is carried out, and accordingly secondary oversize products and secondary screen underflow are obtained; third, the primary screen underflow and the secondary screen underflow are evenly mixed and then added into a high-pressure grinding roller to be smashed, so that smashed mineral powder is obtained; and fourth, the smashed mineral powder is classified, and hence smashed and classified products with the granularity D55 being smaller than or equal to 0.074 mm are obtained. By the adoption of the smashing and classifying technology, the technical problems that the process is long, the number of devices is large, smashing and classifying production cost is high, classification efficiency is low, easy-to-select size fraction content of the mineral is low, and the molybdenum selection recovery rate is affected in the prior art are effectively solved. The application prospect is broad.

Description

technical field [0001] The invention belongs to the technical field of molybdenite treatment, and in particular relates to a crushing and grading process of molybdenite. Background technique [0002] At present, molybdenum concentrators mostly use three-stage and one-closed-circuit crushing technology for crushing, and the grinding and classification technology of ball mill plus cyclone or spiral classifier is used for grinding and classification. / 160 gyratory crusher for coarse crushing, coarse crushing and discharge of mineral products for primary screening, and products larger than 25mm on the primary screen enter PYB2200 standard cone crusher for secondary crushing, medium crushing and discharge of mineral products for secondary screening, secondary The products larger than 25mm on the screening sieve enter the PYD2200 short head cone crusher for fine crushing, and the finely crushed ore products return to the secondary screening, and the secondary screening and primary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C23/14
Inventor 刘迎春李九洲肖刚俞国庆张岩邹艳赵涛
Owner JINDUICHENG MOLYBDENUM CO LTD
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