Title: Coilloid remover of heavy metal irons in aqueous solution and its preparation method
Application Number: 86108746 Application Date: 1986.12.26
Publication Number: 1019824 Publication Date: 1988.07.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C08B1/62,C08F8/36,C08L29/02
Applicant(s) Name: Beijing General Inst. of Nonferrous Metals Address:
Inventor(s) Name: Liang Weimin, Yang Guifang
Attorney & Agent: MU ZONGXU ZHANG GYONGHU
Abstract:
     The complex compound consists mainly of crosslinked xanthate of water-unsolvable polyvinyl alcohol. It also contains trithiocarbonate, hydroxide and carbonate. The said complex compound can remove the heavy metal ions in aqueous solution. Its preparation method is that crosslinked water-unsolvable polyvinyl alcohol which has been soaked in strong alkaline solution reacts on CS2 resulting in xanthation reaction at 20-40 deg.C in alkaline solution. The said complex compound has high efficiency of removing heavy metal ions. It has high capture capability like that of water-unsolvable starch xanthate and the regeneration property like that of wood scrap xanthate, but it has no demerits of the two above-said xanthates. Therefore, it is possible to save huge high-quality starch and timber.
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