Abstract: The present invention provides a process for the preparation of detergent builder Zeolite-A from Kimberlite tailing generated as solid waste during diamond mining is disclosed. The process comprises, reacting an acid treated Kimberlite tailing with alkali solution to obtain sodium silicate and reacting it with alkaline aluminum source at room temperature and crystallizing at higher temperature to obtain Zeolite-A. The product is useful as builder in detergent formulation.
Type:
Grant
Filed:
January 18, 2008
Date of Patent:
July 14, 2009
Assignees:
Council of Scientific and Industrial Research, National Mineral Development Corporation Limited
Abstract: The present invention provides a process for the preparation of detergent builder Zeolite-A from Kimberlite tailing generated as solid waste during diamond mining is disclosed. The process comprises, reacting an acid treated Kimberlite tailing with alkali solution to obtain sodium silicate and reacting it with alkaline aluminum source at room temperature and crystallizing at higher temperature to obtain Zeolite-A. The product is useful as builder in detergent formulation.
Type:
Application
Filed:
January 18, 2008
Publication date:
December 18, 2008
Applicants:
Council of Scientific and Industrial Research (CISR), National Mineral Development Corporation Limited
Abstract: A new process is described for the preparation of free flowing hydrated amorphous silica from kimberlite tailing—a waste in diamond mining. The process comprises treating of kimberlite with acid, further reacting it with alkali solution to obtain soluble metal silicate solution, which is subsequently neutralized with mineral acid to polymerize silica as insoluble precipitates. The products is useful in rubber, paints as abrasive etc.
Type:
Grant
Filed:
December 27, 2004
Date of Patent:
May 2, 2006
Assignees:
Council of Scientific and Industrial Research, National Mineral Development Corporation Limited