2007•Conservation and Utilization of Mineral ResourcesRequires access

Modification Research of Ca-bentonite as Drilling Na-bentonite

Yang Shao-wen

Abstract

A Ca-bentonite clay from He'nan province was used to prepare Na-bentonite by semi-dry extrusion modification process using sodium carbonate as modified agent.The results showed that the production had high colloid index and expansion rate and meet to GB/T5005-2001 when the dosage of sodium carbonate was 3%,extrusion times was 3,the dosage of water was 17.5% and the particle size of raw material was minus 20 mesh.

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Available abstract

Key concepts: Bentonite, Drilling fluid, Extrusion, Raw material, Sodium carbonate, Carbonate, Mineralogy, Particle size