These are an impure variety of siliceous clays containing more calcareous impurities along with sand and other vegetable impurities. These clays are mainly used for making tiles and bricks. The colour varies from yellow to brown. The excavated clay is stored in an open yard for quite a long time and exposed to weathering conditions. […]

The excavated material is crushed into small chips in a beater mill. It is then subsequently crushed into powder in a Muller and the powder is sieved through a screen. The screened fine powder can be blended with other ceramic raw materials based on the body formulation of individual ceramic bodies. Alternatively these chips from […]

Shale is a variety of clay that is naturally indurated and compressed hard under high pressure of the strata. They generally occur in stratified layers and occupy an intermediate position between clay and slate. The chemical composition varies greatly from mine to mine. The slaking property of shale is very poor — unless it is […]

Fusible clay is a variety of clay which relatively fuses at very low temperature and commonly used for making common pottery and tiles. The most common varieties are used for making common bricks. These clays contain very high ratio of free silica and fluxes like lime, iron, soda and potash. These substances form a eutetic […]

Bentonite is a very peculiar type of clay which is the disintegration product of glassy particles of volcanic ash. Chemically, bentonites contain more silica, lime and magnesia than Ball clay. But the alumina content is very low while iron content is very high than that of ball clays and china clays. The colour of bentonite […]

Fire clay is a variety of plastic refractory type clay which is normally found beneath the coal bed. The composition of the clay varies drastically from aluminous type to highly siliceous type.
Fire Clay is usually used for making variety of refractory materials. The physical colour of the clay varies from greenish grey to off-white creamish […]

From the dryer the cake is transported to a shredding machine. In the shredding machine it is made into small lumps.  These small lumps are packed and shifted to the storage yard from where it can be dispatched to end users. The Clay properties should be tested and uniformity has to be maintained in […]

The Clay brought from various locations should be stored separately based on its properties. The weighing can be done separately.  The material has to be brought into a Clay shredding machine and then blended in a blending machine. During transportation of the Clay to the shredding machine, the unwanted materials need to be […]

Each individual Ceramic manufacturer needs Ball Clay with different characteristics for their products. For example, Sanitaryware manufacturer gives higher preference for its strength and flow behaviour, whereas an Insulator manufacturer gives more importance for its plasticity.
The Clay manufacturer can meet these different individuals and understand the final quality of clay required by them. […]

The Ball Clay Mine Owners can set up their own Quality Control Testing Lab at their Mine Site and they can do the following tests to ascertain quality characteristics of the clay available at various locations of their mine.
This test normally includes:
a)Chemical Analysis including Carbon.
b)Calculate rational analysis.
c)Viscosity and Thixotropy
d)Particle size analysis
e)Thermal Expansion
f)pH Values
g)Refractoryness
h)Shrinkage behaviour both […]