China Clay for Paint Industry:
When china clay is imported it comes in large containers and the clay is in lump form. This usually contains anywhere from 6 to 10 per cent moisture that has to be driven off before it can be used by the paint maker. This will add up to the material cost. Enormous quantities of this clay are imported for industrial purposes, where it is used in the pulped form and in that case the amount of moisture cuts a figure only as to its weight. The clay absorbs some moisture in transit and on being stored in the open ware house, hence resulting in the large percentage of water which demands efficient processing.
Few Kaolin varieties are more opaque than the others. For Kaolin to be used as extenders in Paint, one has to choose the most opaque type. When using kaolin in paints for reducing color, the clays with less opacity is best as they do not absorb so much of color which is usually higher in cost when compared to the clay. This industry demands fine grade kaolin. The finer the grade the more greasy the feel between the fingers. Domestic Kaolin’s feel rougher though they are free from grit. Better China Clay Beneficiation Process will help produce the fine grade material.
To be Contd…
