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Device capable of controlling mineral fiber crystal microstructure and controlling method utilizing device

A mineral fiber and microstructure technology, applied in grain processing and other directions, can solve the problems of high proportion of superfine powder and low concentration of particle size distribution, and achieve the effects of accelerating dissociation, improving dissociation characteristics and reducing energy consumption.

Active Publication Date: 2020-06-16
大连环球矿产股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention solves the problem of powder remaining in the container, but due to its impact components, the proportion of superfine powder will be high, and the structural characteristics of crushing and sorting inside the container lead to a low concentration of particle size distribution

Method used

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  • Device capable of controlling mineral fiber crystal microstructure and controlling method utilizing device
  • Device capable of controlling mineral fiber crystal microstructure and controlling method utilizing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A device for controlling the fine structure of mineral fiber crystal form, the device includes a roller press 1, a cleavage device 2, a jet mill 3, and a classifier 4;

[0030] The roller surface of the pressing roller of the roller press 1 is a diamond pattern, and the hardness of the diamond pattern is HRC58;

[0031] The discharge port of the roller press 1 is connected with the cleavage device 2;

[0032] The lining of the cleaving device 2 and its cleaving blades are special industrial ceramics with a replaceable structure and no pollution to materials;

[0033] The unqualified product discharge port of the cleavage device 2 is connected with the feed port of the roller press 1;

[0034] The qualified product outlet of described cleavage device 2 is connected with jet mill 3;

[0035] The upper cavity of the jet mill 3 is connected with a classifier 4 .

Embodiment 2

[0037] A method utilizing the controllable mineral fiber crystal structure of the device described in Example 1, said method comprising the steps of:

[0038] S1, coarsely crushing wollastonite raw ore to 50-80mm particles;

[0039] S2, the product obtained in step S1 is subjected to photoelectric beneficiation to remove impurities such as gangue;

[0040] S3, the product obtained in step S2 is transported to the roller press 1, and the pressing device of the roller press 1 applies a pressure of 190MPa to the pressure roller, and the speed difference of the two pressure rollers is 500rpm, and the material is subjected to frictional shear while loading the static pressure. Shear force, the product obtained in step S2 is broken to 0.08-1.20mm;

[0041] S4, the product obtained in step S3 is transported to the cleavage device 2, the rotating speed of the cleavage grading sieve of the cleavage device 2 is 800rpm, and the wollastonite coarse powder greater than 1mm after cleavage ...

Embodiment 3

[0045] A method utilizing the controllable mineral fiber crystal microstructure of the device described in embodiment 1, the difference from embodiment 2 is:

[0046] S3, the product obtained in step S2 is transported to the roller press 1, and the pressing device of the roller press 1 applies a pressure of 160MPa to the pressure roller, and the speed difference of the two pressure rollers is 200rpm, and the material is subjected to frictional shear while loading the static pressure. Shear force, the product obtained in step S2 is broken to 0.08-1.50mm;

[0047] S4, the product obtained in step S3 is transported to the cleavage device 2, the rotating speed of the cleavage grading sieve of the cleavage device 2 is 800rpm, and the wollastonite coarse powder greater than 1mm after cleavage classification is returned to the roller press 1, and the wollastonite coarse powder less than 1mm is returned to the roller press 1. The wollastonite powder is transported to the jet mill 3 af...

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Abstract

The invention relates to a device capable of controlling a mineral fiber crystal microstructure and a controlling method utilizing the device, and belongs to the field of preparation and application of ultrafine functional materials. The device comprises a roller press, a cleavage device, an air flow crusher and a grader; a discharging outlet of the roller press is connected with the cleavage device; a non-qualified product discharging outlet of the cleavage device is connected with a feeding inlet of the roller press; a qualified product discharging outlet of the cleavage device is connectedwith the air flow crusher; and an upper cavity of the air flow crusher is connected with the grader. As for ore crushed through the high-pressure roller press, the ultrafine crushing work index is significantly decreased, the cleavage characteristic is improved, and thus single-body cleavage of the ore in a subsequent ore grinding process can be accelerated.

Description

technical field [0001] The invention relates to a device for controlling the microstructure of mineral fiber crystal form and a controllable method using the same, which belongs to the field of preparation and application of ultrafine functional materials. Background technique [0002] Wollastonite is a chain silicate mineral caused by metamorphism. As a new industrial raw material that has attracted much attention, it originates from its special fibrous, radial, and needle-like aggregates. The ultra-fine preparation technology of materials is the inevitable product of high-tech development in recent years. Modern industry requires many solid materials to be used as industrial raw materials in powder form. They must not only have extremely fine particle size, strict particle size distribution, and high purity. But also need to have a specific particle morphology. Wollastonite mineral fiber should be fine-grained and surface-activated like other mineral powders, and its aspe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C4/02B02C23/20
CPCB02C21/00B02C4/02B02C23/20
Inventor 张延大
Owner 大连环球矿产股份有限公司
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