A device for controlling the microstructure of mineral fiber crystal form and its controllable method

A technology of fine structure and mineral fiber, which is applied in the direction of grain processing, etc., can solve the problems of high proportion of superfine powder and low concentration of particle size distribution, and achieve the goals of accelerating dissociation, improving dissociation characteristics, and improving grinding and sorting efficiency Effect

Active Publication Date: 2022-04-12
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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  • A device for controlling the microstructure of mineral fiber crystal form and its controllable method
  • A device for controlling the microstructure of mineral fiber crystal form and its controllable method

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 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. The device of the present invention includes a roller press, a cleavage device, an airflow mill, and a classifier; the discharge port of the roller press is connected with the cleavage device; the unqualified product discharge port of the cleavage device is connected with the roller The feed inlet of the press is connected; the qualified product outlet of the cleavage device is connected with the jet mill; the upper cavity of the jet mill is connected with the classifier. In the present invention, after the ore is pulverized by a high-pressure roller press, the ultrafine pulverization work index of the ore is obviously reduced, the dissociation characteristic of the ore is improved, and the dissociation of the ore monomer can be accelerated in the subsequent grinding process.

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 Patents(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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