| 摘要 |
A process for preparing ultrafine aluminum silicate salt particles, said process comprising the steps of admixing a solution of aluminum chloride with water glass to form an aluminum silicate gel, adding a suspension of calcium and magnesium hydroxides into said aluminum silicate gel to form a calcium and magnesium salt of aluminum silicate, aging said calcium and magnesium salt of aluminum silicate by heating and agitating, neutralizing a mixture of a solution of sodium aluminate and water glass by adding hydrochloric acid to form another aluminum silicate gel, and admixing said another aluminum silicate gel into with aged calcium and magnesium salt of aluminum silicate, and simultaneously heating and agitating the resulting mixture.
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