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Process for processing nano grade super fine tourmaline micro crystal with negative ion generating function

A technology of negative ion generation and processing method, which is applied in the field of mechanical ultra-fine pulverization and can solve problems such as pulverization engineering problems

Inactive Publication Date: 2003-06-25
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, people naturally try to use modern ultra-fine crushing technology to ultrafinely pulverize tourmaline, but when tourmaline is crushed to a particle size of less than 1 micron, the peculiar charging characteristics of tourmaline, tourmaline crystal is a kind of positive charge at one end. Electricity, the negatively charged polar molecule at the other end, restricts it from being further pulverized. Obviously, it brings new problems to pulverization engineering

Method used

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Examples

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Effect test

Embodiment 1

[0026] Take 100 grams of tourmaline of ≤50 μm (more than 80% of which has a particle size of 10-15 μm) obtained by finishing, and 900 grams of deionized water, put them in a ball mill, and carry out primary ball mill ultrafine processing with the help of grinding aid zirconia balls After 32 hours, the resulting tourmaline slurry is introduced into a decanter high-speed centrifuge for centrifugal sedimentation classification, and the tourmaline slurry with a particle size of ≤2 μm is separated for use, and its yield is 90%, and the remaining particle size> 2 μm The tourmaline slurry is returned to the ball mill to continue the first-stage ball mill ultrafine processing. Take 900 grams of the above-mentioned tourmaline slurry with a particle size≤2 μm and 100 grams of an aqueous solution containing 18 grams of hexametaphosphate, place them in another ball mill, and carry out secondary ball milling ultrafine processing for 24 hours by means of grinding aid zirconia balls, After t...

Embodiment 2

[0029] Take 200 grams of tourmaline of ≤50 μm (more than 80% of which has a particle size of 10-15 μm) obtained by finishing, and 800 grams of deionized water, put them in a ball mill, and carry out primary ball mill ultrafine processing with the help of grinding aid zirconia balls After 48 hours, the resulting tourmaline slurry is introduced into a decanter high-speed centrifuge for centrifugal sedimentation classification, and the tourmaline slurry with a particle size of ≤2 μm is separated for use, and the yield is 90%, and the remaining particle size is > 2 μm The tourmaline slurry is returned to the ball mill to continue the first-stage ball mill ultrafine processing.

[0030]Take 800 grams of the tourmaline slurry obtained above with a particle size of ≤2 μm and 200 grams of an aqueous solution containing 40 grams of hexametaphosphate, put them in another ball mill, and carry out secondary ball milling ultrafine processing with the help of grinding aid zirconia balls 32 ...

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Abstract

The present invention disclooses the preparing process of nano level superfine tourmalline microcrystal with negative ion generating function. The process may obtain superfine tourmaline microcrystalwith stable size and doubled negative ion generating function. The present invention may be used in raising the negative ion density in air to create optimized living environment.

Description

technical field [0001] The invention belongs to the field of mechanical ultrafine crushing, and in particular relates to a production method for applying ultrafine processing technology to nano-scale special materials. Background technique [0002] Common sense tells us that when you stop by a fountain, a waterfall, a scenic beach, a lake, or take a wild walk after a rain or shine, you feel refreshed and refreshed. This is because the air here contains a large amount of negative ions, (as measured by an atmospheric ion concentration measuring instrument, the negative ion concentration in the air can reach 10,000 / cm / 3～ 20,000 pieces / cm 3 ), resulting in particularly fresh air, which is a beautiful living environment created by nature for human beings. Such an environment is conducive to people's health and longevity. However, the content of air negative ions in the cities, residences, offices, hotels, restaurants, hospitals, etc. where the populatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C17/00
Inventor 葛晓陵蒋士忠李书季建平
Owner EAST CHINA UNIV OF SCI & TECH
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