Title: Semi-dry acid method for hot activation of adobe clay
Application Number: 89105893 Application Date: 1989.04.11
Publication Number: 1039193 Publication Date: 1990.01.31
Approval Pub. Date: Granted Pub. Date: 1993.12.08
International Classifi-cation: B01J20/12,C09C1/42
Applicant(s) Name: Sichuan College of Building Material Industry Address:
Inventor(s) Name: Fen Qiming, Feng Qiming, Wang Qingcheng
Attorney & Agent: WANG DETIANG
Abstract:
     This invention provides a simple processes by which an activated adobe earth with excellent decolouring and absorption properties is produced. Adobe clay with adobe stone content not less than 50% is used as raw material which is impregnated in water, drained by extrusion, dried, ground into grains, blended fiercely with small amount of inorganic acid ( Hcl, H2so4, etc.) and water. The flowable grain with a certain amount of moisture, thus obtained is fransferred into the final product by indirect heating at 120-600 deg. C for a given period. It can be used to replace activated carbon for decolouring, deodorization and detoxication in such areas as petrolium, chemical engineering, grains and oil, and environmental protection.
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