Patent Number: 7,785,555

Title: Synthesis of lizardite from olivine

Abstract: Methods of converting olivine to lizardite without formation of chrysotile or brucite are disclosed. The methods comprise heating a mixture of olivine, silica, water, and a caustic agent. The addition of silica allows for complete conversion of the olivine to lizardite through a more thermodynamically favorable reaction. The olivine and silica are preferably of small particle size to increase reactivity.

Inventors: Kragten; David D. (Burnsville, NC), Capobianco; Chris (Asheville, NC)

Assignee: Unimin Corporation

International Classification: C01B 33/24 (20060101); B01J 21/14 (20060101); C01B 33/00 (20060101)

Expiration Date: 8/31/12018