Title: Prodn. process of powdery alum
Application Number: 87103820 Application Date: 1987.05.22
Publication Number: 1022618 Publication Date: 1988.12.07
Approval Pub. Date: Granted Pub. Date: 1992.11.04
International Classifi-cation: C01F7/76
Applicant(s) Name: Pan Tonghan Address: 325005
Inventor(s) Name:
Attorney & Agent:
Abstract:
     The mud containing hot alum solution from the process for making alum from alunite or the hot alum solution made by hot dissolution of granular alum in water is poured into vessels shielded from light and left to cool naturally under stagnant condition to let the water insoluble matter settle. After cooling and clarifying of the solution, the powdery alum product will be obtd.
Time: 10