A Novel Process and Appratus for the manufacture of precipitated silica from rice husk ash

Mukunda, Hanasoge Suryanarayana Avadani and Dasappa, Srinivasaiah and Paul, Palkat Joseph and Subbukrishna, Dibbur Nagesh Rao and Rajan, Nagamangala Krishnaiyengar Sriranga (2004) A Novel Process and Appratus for the manufacture of precipitated silica from rice husk ash. Patent Number(s) WO 2004073600 A2. Patent Assignee(s) Indian Institute of Science.

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Abstract

A novel process for the manufacture of precipitated silica from rice husk ash, having a surface area ranging from $50-400m^2/g$ and tap density of $80-600kg/m^3$ having multiple applications in the field of rubbers and plastics, paints, toothpastes, catalyst, carrier agent, insulation, stabilizing and desiccants. The process method for silica precipitation is novel, where in the chemicals used are regenerated making it a closed loop operation. The extraction process through digestion, precipitation and regeneration are done based on the application specifies, so as to get the required particle size and densities.

Item Type:	Patent
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	26 Apr 2005
Last Modified:	19 Sep 2010 04:18
URI:	http://eprints.iisc.ac.in/id/eprint/3089

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