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Method for producing nano-scale white carbon black with rice hull ash

A technology of rice husk ash and white carbon black, which is applied in the direction of silicon dioxide and silicon oxide, can solve the problems of large volume, low density, environmental pollution, etc., and achieve the effects of simple preparation process, improved corrosion resistance, and reduced costs

Inactive Publication Date: 2009-04-08
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional rice husks are used as primary fuel, and most of the burned rice husk ash is not treated, because of its small density and large volume, it pollutes the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Take by weighing 40g of ultrafinely pulverized rice husk ash and place it in a round-bottomed flask, then pour 100ml of boiled NaOH solution with a concentration of 2mol / l at a solid-to-liquid ratio of 2:5 (solid mass: liquid volume), and place it in a round-bottomed flask. Install a condensation reflux device on the flask, place the round bottom flask in a boiling water bath to react for 4 hours, filter it with a suction filter immediately after the reaction is completed, boil and wash twice with 200ml boiled deionized water, recover the combined filtrate, and wash the filter residue with water To neutral, dry in an oven at 105°C for 12 hours.

[0020] Concentrate the above water glass solution to 14°Be with a rotary evaporator, measure 200ml of 14°Be and pour it into a 250ml beaker, place it in a constant temperature box, keep it warm at 30°C for 24h, and add it under the action of a magnetic stirrer Add a small amount of sodium chloride (11.7g), add polyethylene glyc...

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PUM

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Abstract

The invention relates to a method for preparing nanometer level white carbon black by rice husk ash. The method is characterized in that the process method comprises the following steps: the rice husk ash is treated by an alkaline method to prepare soluble glass; and a soluble glass solution is subjected to condensation, heat insulation, acidic reaction, aging, rinsing, filtering, preparing, homogenizing, spraying and drying, and airflow pulverization. The method has the technical effects that the method reduces cost, improves corrosion resistance, high hardness and high toughness of the material, and has simple preparation process flow, low production cost and good stability.

Description

technical field [0001] The invention relates to a method for preparing nanometer white carbon black, in particular to a method for preparing nanometer white carbon black with rice husk ash. Background technique [0002] At home and abroad, white carbon black is mainly produced from inorganic mineral resources such as sulfuric acid alkylation acid slag. There are few reports on the production of white carbon black from rice husks, and some researches on producing white carbon black from rice husks are actively being carried out. [0003] my country's rice husk resources are extremely rich, and most of them are used as primary fuels at present, and most of the burned rice husk ash has not been further processed. Not only the comprehensive utilization rate is very low, but also the pollution problem cannot be solved. [0004] my country is the main rice producing country in the world, and rice husk, as a by-product after rice processing, accounts for 18%-22% of the weight of ri...

Claims

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Application Information

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IPC IPC(8): C01B33/12
Inventor 刘成梅刘伟李俶涂宗财郑典模陈正行张彦军
Owner NANCHANG UNIV
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