ベントナイト利用の現状と新展開

概要

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Recent development of application in the fields of 1) Foundry, 2) Civil engineering (largest markets), 3) Cat litter (new market) and 4) Radioactive waste disposal (future market) were reviewed. 1) Foundry market: The properties for mix bentonite were evaluated and indicated that Na type bentonite has high thermal stability, but less compressive strength. While Na exchanged bentonite possess the renew properties, with high compressive strength, but low thermal stability. According to the bentonite properties, molding sand for impact molding system are different from usual system. The composition of mix bentonite for each foundry use are further disscussed in the text. 2) Civil engineering market: New process in recycling waste mud by flocculation was succesfully developed. 3) Cat litter market: Cat litter is now becoming a valuable product. 4) Radioactive waste disposal: Various studies of bentonite were made in this field through natural analogue technic.
日本粘土学会の論文
1994-03-25