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Asbestos-free high-purity natural flaky mineral and process for production thereof

A manufacturing method, asbestos-free technology, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., can solve problems such as unavailability, and achieve the effect of improving yield and low cost

Inactive Publication Date: 2013-10-23
SHOWA KDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot be used in small-scale mines in China and other countries

Method used

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  • Asbestos-free high-purity natural flaky mineral and process for production thereof
  • Asbestos-free high-purity natural flaky mineral and process for production thereof
  • Asbestos-free high-purity natural flaky mineral and process for production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Natural flake mineral ore (lump) contains hydromica and vermiculite (flake mineral) as main components and also contains hornblende and serpentine as mineral components other than the flake mineral, each containing pyroxene, quartz and The asbestos component of feldspar, while the natural flake mineral ore is coarsely crushed using a roller crusher. Subsequently, most of the mineral components except the flake minerals are removed by airflow classification to prepare a first mixture, and the first mixture is sieved to prepare a second mixture having a controlled particle size of 0.5 mm to 1 mm. Two mixtures.

[0062]The second mixture having a controlled particle size of 0.5 mm to 1 mm is fed to the figure 1 In the said pneumatic table (type: V-135; product of Nitto Denko Co., Ltd.). In the following cases, sheet material receiving strong air resistance (hereinafter simply referred to as light weight portion) is collected from the light side A of the outlet 5, and bul...

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PUM

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Abstract

The invention provides an asbestos-free high-purity natural flaky mineral obtained by ridding a natural flaky mineral raw ore of non-flaky mineral components and asbestos contained therein as impurities; and a process for producing easily an asbestos-free high-purity natural flaky mineral. The invention relates to an asbestos-free high-purity natural flaky mineral produced by a process which comprises coarsely crushing an asbestos-containing natural flaky mineral raw ore to prepare the first mixture comprising flakes consisting of a flaky mineral alone, lumps consisting of asbestos-containing non-flaky minerals and / or lumps consisting of a flaky mineral, and powdery asbestos; screening the first mixture to prepare the second mixture having a classifiable particle size range; and separating the second mixture with a specific gravity difference separation apparatus into flakes consisting of a flaky mineral alone, lumps consisting of asbestos-containing non-flaky minerals and / or lumps consisting of a flaky mineral, and powdery asbestos.

Description

technical field [0001] The invention relates to an asbestos-free high-purity natural flake mineral and a manufacturing method thereof. Specifically, the present invention relates to an asbestos-free high-purity natural flake mineral separated from natural flake mineral ore and a method for producing the same, containing as impurities mineral components other than the flake mineral and asbestos. Background technique [0002] Air classification is widely used in the separation of mineral components other than the flake minerals from natural flake mineral ores. However, due to insufficient classification accuracy, separation of components having small differences in specific specific gravity and separation from powdery components thereof adsorbed on the flake minerals is difficult and thus limited. [0003] The separation of components in the wet separation method is based on the difference in sedimentation rate or whether they are buoyant in the liquid, which is suitable for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/38B03B4/00B07B4/00
CPCB03B4/02C01B33/42
Inventor 水户洋彦后内貴胤
Owner SHOWA KDE
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