Calcination of Kaolin Clay
It is essential to calcine kaolin clay to improve its brightness and abrasion properties. Kaolin clay calcination at elevated temperature will improve the whiteness of clay to a good extent which will make it highly usable in paint, rubber and plastic industries. In order to obtain the optimum whiteness, the kaolin clay […]

Kaolin Clay for Cosmetics
For cosmetic grade, the kaolin clay has to be pure and white. Generally untreated and only washed kaolin clay is used for cosmetics. 1-2% moisture content is allowable in this grade. Kaolin clay is used in cosmetics due to its mildness in nature and exfoliating effects. Kaolin is used in soap as […]

Kaolin Clay for Cosmetics
Kaolin Clay is the most versatile and common clay type which is used in cosmetics for its excellent characteristics. All cosmetics both dry and wet contain Kaolin Clay. Kaolin Clay finds its usage in cosmetics due to its adsorbent properties. It is due to this property that the china clay becomes an […]

Bentonites:
Bentonite clays are formed through extensive weathering of volcanic glass or ash. These clays are mined by both open pit and underground mining methods. As mentioned due to good plasticity and strength this mineral is used in whiteware manufacturing. But to a minimal extent as excessive addition can cause cracks in the whiteware body

Bentonites:
Clays that contain 75% of montmorillonite as the primary clay mineral are called as Bentonite. They swell to a great extent in water due to the interlayer water adsorption tendencies. Following are few of the highlighted properties of this mineral.
1. Fine size of this mineral makes it very plastic
2. The mineral has very high base-exchange […]

Clay for Manufacturing Refractory Bricks
On that note just a very brief description on how refractory bricks are manufactured. The Refractory Brick manufacturing needs good sound in usage of amount of mix to use. Plastic clay has to be used for preparation of chamotte and as a binder. Chamotte is prepared by burning the plastic clay […]

Clay for Manufacturing Refractory Bricks
Fire clay bricks are produced by mixing crushed grog with sufficient binder clay to produce a mass which can be molded into bricks and which will retain their shape during subsequent drying and burning. The ideal chemical composition of clay for producing bricks should be
Alumina – 37%
Silica – 57.8%
TiO2 – 1.6%
Fe2O3 […]

Clay for Manufacturing Refractory Bricks:
One another application usage of Clay is the manufacturing of refractory bricks…. Any idea on how these are made??? We shall discuss the same in the coming blogs… Fire Clay Bricks are the largest type of bricks used in industrial refractory’s. Research works are being carried out extensively to see if […]

Improve Kaolin Whiteness
Note that China Clay processing for improving whiteness greatly depends upon the type of iron contamination. As mentioned in previous blog type of iron impurity Free or Structural plays a major role in determining process for improving whiteness. The Kaolin wet beneficiation process for improving whiteness consists mainly of degritting, fractionation by special […]

Improve Kaolin Whiteness
Before getting into the process steps to follow for improving whiteness, let us first discuss how to determine whiteness of the kaolin in laboratory. Whiteness Index and Opacity can be measure using a Commercial Colorimeter. To determine the particle size and finesses of Kaolin, it is necessary to perform granulometric analysis. Granulometric […]