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Agglomeration process of -200 mesh celestite concentrate

A technology of celestite and agglomeration, which is applied in the field of agglomeration of powder materials, can solve the problems of easy adhesion on the surface of the roller, difficulty in demoulding, low grade of celestite ore, etc., and achieves light weight, simple equipment, and improved The effect of drop strength

Inactive Publication Date: 2006-02-22
QINGHAI JINRUI MINERAL DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main characteristics of the ore are: the ore body is shallow on the surface, suitable for open-pit mining, the grade of celestite is low, SrSO 4 The content is only about 30%, and it needs to be pre-enriched to improve the grade before it can be used as a production raw material for the carbon reduction process; for celestite ore, it goes through the crushing process, rod milling process, flotation process, concentration process, one-stage desliming process and two-stage desliming process. Mud process; rough flotation process, sweep flotation process, sweep fine flotation process, first-level selection process, second-level selection process, third-level selection process, fourth-level selection process, and fifth-level selection process The fine-grained and viscous celestite flotation concentrate is easy to adhere to the surface of the rollers during the roller pressing process, resulting in difficulty in demoulding. Therefore, the above two methods are not suitable for celestite flotation concentrates. block making

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Take 100kg of celestite flotation concentrate material with -200 mesh and 6.5% moisture content, put it in a disc pelletizer with a diameter of 1000mm and an inclination angle of 45°, add 9.2% of water, add 0.5% of additive G, and add H0.8%, pelletizing machine at 22r / min -1 Turn the cue ball to form, then add water and materials continuously, so that the cue ball grows into a green ball with a particle size of 10mm within 18 minutes, and continue to roll for 2 minutes to further compact the green ball. Unload the green balls from the pelletizer, and measure the falling strength of the green balls to be 7.4 times 0.5.m -1 .

Embodiment 2

[0013] Take 100kg of celestite flotation concentrate material with -200 mesh and 7% moisture content, put it in a disc pelletizer with a diameter of 1000mm and an inclination angle of 45°, add 9.35% of water, add 0.8% of additive G, and add H1.0%, pelletizing machine at 24r / min -1 Turn the cue ball to form, then add water and materials continuously, so that the cue ball grows into a green ball with a particle size of 11mm within 19 minutes, and continue to roll for 2 minutes to further compact the green ball. Unload the green balls from the pelletizer, and measure the drop strength of the green balls to be 7.8 times 0.5.m -1 .

Embodiment 3

[0015] Take 100kg of celestite flotation concentrate material with -200 mesh and 7.5% moisture content, put it in a disc pelletizer with a diameter of 1000mm and an inclination angle of 45°, add 9.5% of water, add 1.0% of additive G, and add H1.2%, pelletizing machine at 25r / min -1 Turn the cue ball to form, then add water and materials continuously, so that the cue ball grows into a green ball with a particle size of 12mm within 20 minutes, and continue to roll for 2 minutes to further compact the green ball. Unload the green balls from the pelletizer, and measure the falling strength of the green balls to be 8.2 times 0.5.m -1 .

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Abstract

The invention relates the pulverulent material agglomerated technology, which is celestine agglomerated technology. The technological process of celestine finished ore agglomerated technology comprises the following steps: -200 mesh celestine finished ore and binding agent or addition agent - mixing ingredient homogeneously - preparing mother pellet - adding material and water - mother pellet growing - continuing rolling - compressing the pellet - drying and obtaining the celestine finished ore pellet. Because the invention adapts the method of pellet ore roll forming, the inner structure of the pellet is fine and close, and the materials, which hit against the pellet stick on the surface of the pellet to make the ball grow by layer. Merry-go-round agglomerated machine has the advantages of simple apparatus, light weight, automatic grading function and preparing the pelet epigranularly. The invention uses the addition agent to improve the incidence intensity of the pellet to 8.2 times per 0.5m.

Description

technical field [0001] The invention relates to a block-making process of powder materials, in particular to a block-making process of celestite flotation concentrate. Background technique [0002] The commonly used powder material agglomeration methods in industry mainly include extrusion molding, roller pressing and rolling molding. Extrusion molding is the combined action of the thrust generated by the material and the conical shrinkage discharge port when the material is conveyed by the spiral blade, so that the material is dense and extruded from the discharge port in a cylindrical shape, so as to achieve the purpose of agglomeration. Although the extrusion molding process is simple, it has disadvantages such as low production efficiency, strict moisture requirements, and poor adaptability of raw materials. Therefore, this method is only applied to a few kinds of materials. Roll forming is through the pressure generated between two round rol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/14
Inventor 李光辉田世光范晓慧王启民岳忠姜涛郭宇峰尹宏君杨永斌余国礼黄柱成李玉寿许斌权炳盛刘牡丹董海刚张元波
Owner QINGHAI JINRUI MINERAL DEV
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