Method of preparation white carbon black and sodium bexameta phosphate

A technology of sodium hexametaphosphate and white carbon black, applied in chemical instruments and methods, phosphorus compounds, silicon dioxide, etc., can solve the problems of large environmental pollution, high product cost, and high impurity content, and achieve the effect of reducing production costs

Inactive Publication Date: 2005-03-23
绵阳市森泰新材料科技有限公司
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  • Claims
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Problems solved by technology

[0003] The present invention simultaneously prepares white carbon black and sodium hexametaphosphate two kinds of products by utilizing phosphoric acid and water glass, has overcome traditional white carbon black production m

Method used

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  • Method of preparation white carbon black and sodium bexameta phosphate

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Embodiment 1

[0039] Embodiment 1: utilize the preparation method of 85% or 40% phosphoric acid

[0040] Preparation of phosphoric acid and water glass solution: put 4 tons of 85% phosphoric acid into the regulating tank, then start stirring, slowly add 4.5 tons of pure water to the regulating tank, stir for 20 minutes, and take a sample to measure its specific gravity should be 1.25g / cm 3 , when the specific gravity is qualified, pump the qualified phosphoric acid to the high metering tank of the neutralization post for use; if it is 40% phosphoric acid, it can be directly pumped to the high metering tank of the neutralization post for use; pump 40Be raw water Put 3 tons of glass into the water glass regulating tank, turn on the agitator, open the pure water valve, accurately add 4.1 tons of pure water into the regulating tank, stir for 10 minutes, and take a sample to measure its specific gravity should be 1.13g / cm 3 (17°Be), when the adjusted concentration is qualified, open the bottom d...

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Abstract

A process for preparing white carbon black and sodium hexametaphosphate incldues such steps as neutralizing reaction between phosphoric acid and water glass to obtain white carbon black, filtering the resultant liquid, regulating pH value, evaporating, polymerizing reaction, cooling by roller pair, breaking and sieving to obtain finished sodium hexametaphosphate.

Description

technical field [0001] The invention relates to a preparation method of white carbon black, in particular to a method for simultaneously preparing white carbon black and sodium hexametaphosphate by using phosphoric acid and water glass. Background technique [0002] Molecular formula of white carbon black: SiO 2 nH 2 O, the product is usually a white amorphous fine powder, light in weight, with an original particle size below 0.3μm, a relative density of 2.31-2.653, and a melting point of 1750°C. After absorbing moisture, it forms aggregated fine particles, which are porous and large in specific surface area. There is a large dispersion force in the glue, and it shows high reinforcement when filled in rubber. Sodium hexametaphosphate molecular formula (NaPO 3 ) 6 , relative molecular weight 611.77, the product is colorless transparent glass or white granular crystal; relative density 2.484 (20 ℃); melting point 616 ℃; easily soluble in water, insoluble in organic solvent...

Claims

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Application Information

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IPC IPC(8): C01B25/445C01B33/113C01B33/18
Inventor 杜模全李天云
Owner 绵阳市森泰新材料科技有限公司
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