Agrawal, Parvesh and Misra, Satyendra Nath and Sharma, T (2013) Kaolin clay beneficiation: Effectiveness of different unit operations involved. Indoceram of AIPMA, 2 (1). pp. 6-21. ISSN 2321-1970

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Kaolinite is the major mineral phase in clays and it is white burning in a pure state. It is widely used in ceramic industries and in filler grade applications e.g. paints and paper and plastics etc. In our country, due to rapid growth of ceramic industries especially tiles, the demand of good grade kaolin clay is increasing and their reserves fast depleting. However, the low-grade clays or dump clays are available in plenty that may be utilized if upgraded to desired specifications by beneficiation. Impurity mineral identification and their removal are the two important aspects in clay processing. The beneficiation requirements of clay depend on both the specific physicochemical requirements of the processed clay and the characteristic of the crude clay materials available. A number of unit operations are involved in beneficiation of clays viz., size reduction, size separation by levigation, hydrocyclone classification, high intensity magnetic separation, froth flotation, chemical leaching and selective flocculation etc. In view of above a critical review of the clay minerals structure, classification, applications, impurities and their effect, unit operations and national resources of clay etc aspects has been made with a special reference to low grade kaolin clays occurring in Kutch Bhuj region of Gujarat state of India.

Item Type: Article
Uncontrolled Keywords: Clay; Beneficiation; Low grade; Triaxial porcelain; Kutchh-Bhuj; Vitrified ceramic tile
Subjects: Structural Clay Products
Depositing User: Bidhan Chaudhuri
Date Deposited: 10 Feb 2014 12:52
Last Modified: 11 Jun 2015 06:29

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