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ball clay kaolinite

Ball Mill

Ball Mill

Ball mill is the vital equipment for recrushing after being crushed.

Processing ability:0.5-500t/h

Feeding size:≤25mm

Applied material:cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc.

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what is ball clay? what are its properties, processing

Ball clays are characterised by higher plasticity, dry shrinkage and dry strength as compared to china clay. They are chemically impure and often contain a large proportion of silica, iron and titanium impurities

The sedimentary clay also contains both carbonaceous matter and lignite in the agglomerate form (>50Mic) and colloidal form(<2 Mic). It’s believed that the carbonaceous material within the prescribed limit (<2wt %) influences the physical properties of the clay and also increases the unfired strength of clay. However, it increases porosity after firing, resulting in a decrease in fired strength. It also increases the casting thickness

The ball clay deposit is sedimentary and consists of numerous strata which frequently vary significantly in physical properties although perhaps not much in chemical composition. Ball Clay is generally called Kaolin, that had been transported from the primary decomposed parent, or igneous rock which were usually granite by nature via glacial displacement making It is a secondary clay, and in this process, it not only does it gain high organic impurities and iron contaminants but the material gets ground down into a finer particle size!

what is ball clay? what are its properties, processing

Main features include high plasticity due to fine particles which give high green strength for handling the product at the green stage. Requires much more deflocculant to get required fluidity compared to china clay because of fine particles and organic impurities. High Green MOR compared to china clay due to more fine particles. Fired shrinkage is comparatively more due to high loss on ignition and particle size distribution. Green Modulus of Rupture: 65 Kg/cm2

Normally Single ball clay is not used in the process because of much varying properties from one delivery to another delivery. So normally two or more ball clay is mixed and used in production process in sanitaryware

industrial clays: kaolin (china clay), ball clay and

Kaolin (china clay) — is chemically inert and can be prepared as a white powder specified (in part) according to its whiteness and brightness. It is ideal for a wide range of ceramic, filling and coating applications, where the appearance of the finished product is important (Jepson, 1984). It is particularly valuable as a surface coating pigment on high quality glossy paper, which might contain up to 30% of the mineral. It is present as a filler in the paper on which this book is printed

Ball clay — is a plastic clay used in the ceramic industry to provide strength and malleability to a ceramic body prior to firing. Also, during firing, ball clay is one of the components which fuses to act as a ‘cement’ binding together the refractory, non-shrinking components of the ceramic body. Much of the ceramic ware produced using ball clay is moulded (such as sanitaryware) and the use of ball clay is essential to ensure that mouldings do not sag or lose shape prior to firing

Bentonite — is both physically and chemically reactive. It shrinks or swells in response to its ability to readily accept or release interlayer water (and organic molecules), and it exhibits important cation exchange and chemical sorption properties. It is ideal for applications where absorbance is important (particularly in the handling of waste materials), and in suspensions or slurries where its interaction with the liquid gives a fluid with particular mechanical properties (viscosity or plasticity; Odom, 1984)

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