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Nano stripping method for coal series hard kaolinite

A kaolinite and nanotechnology, applied in chemical instruments and methods, inorganic chemistry, inorganic pigment treatment, etc., can solve the problems of complex peeling process, and achieve the effect of low energy consumption and less pollution

Inactive Publication Date: 2008-02-13
HEBEI UNIV OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter invention has a complicated stripping process, which requires grinding and intercalation for 3 to 4 times. The stripping is at the micron level, and only 20% of the nanoparticles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take 300 grams of hard kaolinite micropowder (10 μm), add 2000 milliliters of water to make a slurry, and add 0.5 g of sodium hexametaphosphate at a stirring speed of 600 rpm, and continue stirring for 5 minutes. Then, add 100 ml of 30% H 2 o 2 , then stirred at a stirring speed of 300 rpm for 30 minutes, after the reaction was completed, filter, wash, and dehydrate on a vacuum filter until the washing liquid reached pH=7; 250 grams of purified kaolinite were added to 1000 milliliters of saturated acetic acid In the potassium solution, perform power ultrasound, the power ultrasound parameters are: ultrasound frequency 18kHz, ultrasound power 200W, ultrasound intensity 40W / cm 2 , the ultrasonic time was 30 minutes, and after the ultrasonic was completed, the reaction was stirred for 3 hours at a stirring speed of 300 rpm, and the reaction temperature was kept at 60°C. After the reaction is completed, filter and remove the saturated potassium acetate solution on a vacuu...

Embodiment 2

[0035] Take 400 grams of hard kaolinite micropowder (10 μm), add 2000 milliliters of water to make a slurry, add 0.3 grams of sodium silicate under the condition that the stirring speed is 750 rpm, keep stirring for 10 minutes, then add 150 milliliters Concentration of 30% H 2 o 2 , then stirred at a stirring speed of 300 rpm for 30 minutes. After the reaction was completed, filter, wash and dehydrate on a vacuum filter until the washing liquid reached pH=6.5; 350 grams of purified kaolinite was added to 1000 milliliters of saturated In potassium acetate solution, perform power ultrasound, power ultrasound parameters are: ultrasound frequency 18kHz, ultrasound power 200W, ultrasound intensity 32W / cm 2 , the ultrasonic time was 10 minutes. After the ultrasonic was completed, the reaction was stirred for 4.5 hours at a stirring speed of 300 rpm, and the reaction temperature was kept at 60°C throughout. After the reaction is completed, filter and remove the saturated potassium ...

Embodiment 3

[0037] Get 500 grams of hard kaolinite micropowder (20 μm), add 3000 milliliters of water to make a slurry, and add 0.4 gram of sodium tripolyphosphate at a stirring speed of 600 rpm, and continue stirring for 15 minutes. Then, add 200 ml of 30% H 2 o 2 , then stirred at a stirring speed of 300 rpm for 35 minutes. After the reaction was completed, filter, wash and dehydrate on a vacuum filter until the washing solution reached pH=7; 400 grams of purified kaolinite was added to 2000 milliliters of saturated acetic acid In the potassium solution, perform power ultrasound, the power ultrasound parameters are: ultrasound frequency 18kHz, ultrasound power 200W, ultrasound intensity 32W / cm 2 , the ultrasonic time was 15 minutes, and after the ultrasonic was completed, the reaction was stirred for 4 hours at a stirring speed of 400 rpm, and the reaction temperature was kept at 55°C throughout. After the reaction is completed, filter and remove the saturated potassium acetate soluti...

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PUM

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Abstract

The present invention discloses a coal hard kaolinite nano-stripping method. The hard kaolinite powder (the particle size of 10 to 20 microns) is used as the raw material; the water and dispersant are added to make the pulp; then the oxidant is added to remove the carbon for purification; then the mixture is put into the saturated solution of potassium acetate; the potassium acetate is used as the intercalation agent; the intercalation layer is made between the kaolinite layers to form the kaolinite-potassium acetate intercalation complex; the power ultrasonic acoustic cavitation is used to strip the intercalated kaolinite; then the surfactant is added to decorate the surface of the stripped kaolinite; finally, the materials are dried and broken to make the nano-kaolinite. The average thickness of the nano-kaolinite chip is between 20 and 60 nanometers; the average particle size of the chip is between 300 and 500 nanometers.

Description

technical field [0001] The invention relates to a method for nano-stripping of coal series hard kaolinite, which belongs to the deep processing of non-metallic ore. Background technique [0002] Coal-measure kaolinite is a unique mineral resource with great development value in my country, and is an important substitute resource for traditional kaolin. According to the (National Coal-Measure Kaolinite (Soil) Resources and Research on Application of Deep Processing Technology) report: By the end of 1998, the total amount of coal-measure kaolinite resources in the country was 49.709 billion tons, of which the proven reserves were 2.839 billion tons, and the prediction is reliable The reserves are 15.120 billion tons, and the predicted and inferred resources are 31.75 billion tons. The content of kaolinite in kaolinite in some areas is as high as 99%, and the chemical composition is close to the theoretical composition of kaolinite. Among the current commercial kaolinites, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/28C09C3/00C01B33/40
Inventor 丁述理
Owner HEBEI UNIV OF ENG
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