The ball mill is a key equipment to grind the crushed materials, and the ball mill is widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc, and the ball mill can grind various ores and other materials with dry type and wet type. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material.
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. There are ladder liner and ripple liner and different specifications of steel balls in the chamber. The centrifugal force caused by rotation of barrel brings the steel balls to a certain height and impact and grind the materials. The ground materials are discharged through the discharging board thus the grinding process is finished.
Materials enter into the first grinding chamber through hollow shaft. There are liner of ladder type or curve type, and steel balls of different specifications in the first grinding chamber. The centrifugal force caused by turning of he barrel take balls into a certain height inside the chamber, and then balls fall down, have striking and grinding effect on materials. Materials after primary grinding in the first grinding chamber is fed into eh second grinding chamber through single layer chamber dividing plate. There are flat liners and steel balls in the second grinding chamber. The balls make further grinding effect on materials. Finished powder which meet requirement is discharged through discharge grade plate and the grinding work is finished.
1. Ball mill can be used in cement grinding
Invention of cement provides a material basis for the development of construction. From land engineering to water, underground engineering, and cement plays an important role. Cement has been invented for a hundred years and it has always been the most widely used the most consumed binder. In order to meet the needs of different construction, the increasing variety of cement has reached more than 200 kinds. Ball mill is an important equipment to grind cement.
2. Ball mill can be used to grind silica
Silica, also called silicon dioxide, has been known for its hardness since antiquity. Silica powder is widely used in the production of glass for windows, drinking glasses, beverage bottles, and many other uses. The majority of optical fibers for telecommunications are also made from silica. It is a primary raw material for many whiteware ceramics such as earthenware, stoneware, porcelain, as well as industrial Portland cement. Ball mill is an important equipment for grinding silica.
3. Ball mill can be used to grind limestone
Limestone often contains variable amounts of silica in the form of chert or siliceous skeletal fragment, as well as varying amounts of clay, silt and sand sized terrestrial detritus carried in by rivers. Limestone powder can be used as filler in painting industry to enhance the performance of quality paints. Ball mill plays an important role in grinding limestone.