2.The fine ore grinded by the ball mill enters the next process: classification.The spiral classifier washes and classifies the ore mixture with the help of the principle that the specific gravity of solid particles is different and the speed of precipitation in the liquid is different.
If you are interested in the machine-- lab ball mill machine, horizontal planetary ball mill for grinding salt ,.
Steel balls is the lifeblood of the ball mill, steel balls is an essential accessory.Steel balls is generally divided into two types: casting and forging, they are not the same degree of wear.
Gypsum powder process line, crushing & powder grinding.Ball mill, jaw crusher, quarrying plant, mining equipment.Is well received in usa, canada, france, germany.
The cement ball mill usually can be applied to raw meal grinding or cement grinding.Besides, the cement ball mill also can be used for metallurgical, chemical, electric power, other mining powder grinding, and other grindable materials.
The lime ball mill can superfinely grind lime or coal ash.The equipment consists of the main parts such as the feeding part, the discharging part, the turning part, and the transmission part (reducer, small transmission gear, motor, and electronic control).Simple and reasonable structure, reliable operation and large processing capacity.Lime is one of the main raw materials for concrete production, and its main function is to provide effective calcium oxide with cement, so that it can interact with certain ingredients in siliceous materials under hydrothermal conditions.
The fine grinding of ores is increasing due to the depletion of coarse grained, easily processed ore bodies and the increased need to process disseminated, fine grained deposits.The main reason ball mills are not utilised for fine grinding is the perceived poor energy efficiency generally experienced when grinding to fine sizes.However there is a trend towards ball mill grinding for product sizes below the traditional ball mill cut-off of 45 m.The effect of ball size on the feed and product size distributions in a fine grinding situation was studied.The grinding tests identified a number of trends for fine grinding, including: efficient grind curves forming the same shape as for traditional grinding (exponential decay). the results supporting the claim that fine material is best ground with small media and coarse material with larger media. the smallest charge was most efficient at treating the finer feeds. the smaller charges were very ineffective and inefficient for grinding of the coarser feeds. efficient grind was undertaken by smaller charges than that recommended by bonds ball sizing formula, and operating work index analysis confirming the results of the p 80 -energy analysis.
Construction; a ball mill consists of a hollow cylindrical shell that rotates about its axis, this axis can be either horizontal or at a small angle to the horizontal.This horizontally shell is filled with balls; the grinding media.The grinding media that is ball can be made up of steel, stainless steel or rubber.The inner surface of the hollow cylindrical shell is usually lined with an abrasion resistance material such as manganese steel or rubber.
The ball mill is one of the most widely used super fineness grinding equipments in the industry.There are many types such as tube ball mill, cement ball mill, super fineness and energy-saving ball mill, overflow ball mill, chinaware ball mill, and grid ball mill.Ball mill is mainly used to grind materials in mineral, cement, refractory, chemical industry, etc.Ball mill has dry and wet ways.
Cascade mode motion of grinding balls carried out at low drum speed.At start-up of a mill, the grinding material rotated by a certain angle and grinding balls start to move by closed path.The curved surface of natural slope is close to the plane inclined at some angle to the horizontal.This angle is equal to a limit angle of rotation.In this mode, the ground material remains in this position, but the grinding balls continuously circulate, rise on circular trajectory and cascade roll to the reference point.There is a zone or core in the central trajectory of the grinding material.This zone is inactive.In cascade mode grinding occurs as a result of crushing and abrasive actions by grinding balls.This mode used in the ball mill with a central discharge.
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