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Ball Mills
Ball Mills
NSI Equipments Pvt Ltd offers Ball Mills – a key equipment to grind the crushed materials in to fine powder or fine paste by grinding in a wet way. A ball mill is used widely for grinding materials like ores, chemicals, ceramic raw materials, cement, paints, etc., ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc. The ball mill is a horizontal rotating device transmitted by the outer gear. The materials are transferred to the grinding chamber through the quill shaft uniformly or through opening manhole on the cylinder shell. Ball mill rotates on horizontal axis partially filled with raw material to be ground plus the grinding medium. Material fed through the mill is crushed by impact and grounded by attrition between the balls and also the internal cascading effect reduces the material in to a fine powder. Ball mills usually have replaceable liners inside suitable to the product and these liners are replaced when they wear out. These liners will be of wave shape which key the ball charge in to the shell and prevent the slippage. Grinding media is usually of metallic balls or other media like porcelain, pebbles suitable to the product. The ground material is discharged through the other end of the hollow shaft or through opening manhole and thus the grinding process is finished. Ultimate particle size depends entirely on how hard the ground material is and how long the ball mill runs. To achieve reasonable efficiency the ball mills are to be operated in a closed circuit system where the over size particles are continuously being re-circulated back to the mill and to be reduced. Types: cylindrical single/multi compartment with and without classifier; conical cylindrical with classifier; jacketed cylinder.