Title: Refined kaolin calcined from kaolinite
Application Number: 90101929 Application Date: 1990.04.12
Publication Number: 1055526 Publication Date: 1991.10.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C01B33/26,C04B33/04,C09C1/42
Applicant(s) Name: Zhongke Research Inst. of Material Engineering, Be Address: 100007
Inventor(s) Name: Wang Zigeng
Attorney & Agent:
Abstract:
     The feature of this invention is: Kaolinite is pulverized into powder of 10-160 mesh, then water is added and stirred evenly. By pressing into porous substance, it is roasted. It is dried for 4 hrs at temp. below 400 deg.C; it is dehydrated for removal of crystal water at temp. of 600 deg.C for 3 hrs; it is roasted for 12 hrs at temp of 800-925 deg.C for thorough oxidation of organic matter. After cooled, it is remilled, and its strength requirement is met. Then iron-removing is conducted, and refined kaolin clay is obtained. This invention may provide raw material for papermaking and electronic porcelain.
Time: 9