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Mixing mill
JM series vertical spiral mixing grinding machine is a new type of fine grinding or ultra-fine grinding equipment successfully developed by Changsha Research Institute of Mining and Metallurgy (hereinafter referred to as Changsha Mining and Metallurgy Institute) and has obtained national patent. This mill is similar to a Japanese tower mill.
Structure and working principle: This machine is composed of cylinder, spiral agitator, transmission and frame. The cylinder contains a certain grinding medium (steel ball, porcelain ball or gravel). The spiral agitator is driven to rotate slowly by the reducer, and the grinding medium and materials are used as a whole multi-dimensional cyclic motion and rotation motion in the cylinder. Under the weight of the grinding medium and the pressing force generated by the spiral rotation, the material utilizes friction and a small amount of friction. The impact is squeezed and sheared and effectively ground. The technical parameters are listed in Table 1.
Its main features are: 1 can effectively grind the material to 1μm or finer; 2 energy saving more than 50% compared with the horizontal ball mill ; 3 efficiency is more than 10 times that of the horizontal ball mill; 4 product size can be adjusted, intermittent, Circulating, continuous production; 5 noise less than 85dB, low vibration; 6 simple structure, convenient operation and maintenance, less floor space; 7 product fineness can be adjusted between 1100m.
Applications: wet fine grinding: regrinding silver gold ore, molybdenum ore, copper ore, lead-zinc ore; calcium carbonate, kaolin, mica, talc, barite, red iron oxide, graphite, ferrite, wrong sand , electrolytic, manganese dioxide and finely ground coal-water slurry or ultrafine grinding. Dry fine grinding: calcium carbonate, mica, light burned magnesia powder, barite, slag and other non-metallic mineral and chemical raw materials.
The SJ90 high-efficiency agitating ball mill developed and produced by Beijing Research Institute of Mining and Metallurgy is a wide-ranging and in-depth investigation and summary of the design and application of many similar products at home and abroad, focusing on advantages, abandoning shortcomings, and carrying out comprehensive optimization design. Introduced, with high ultra-fine grinding efficiency and production capacity, better wear parts wear resistance and lower material pollution, better cooling effect.
Its main advantages are: 1 reasonable cylinder height and driving power configuration, can achieve higher ultra-fine grinding capacity; 2 specially designed agitator form with appropriate stirring speed, with high ultra-fine grinding efficiency; Well-designed wear-resistant system with high wear life and minimized contamination of materials; 4 external circulation cooling to ensure cooling effect; 5 circulating pump manufactured by imported technology, reliable operation, fault Low rate, long wear parts; 6 control system can flexibly control and control the main motor, cooling tank and circulation pump. The main technical parameters are listed in Table 2.
In addition, the North Mine Institute also produces GJ5×2 large double-slot high-strength agitating ball mill (also known as stripping machine), which is a new type of continuous ultra-fine grinding (peeling) equipment, which is characterized by: 1 large equipment, high production capacity , up to 1.5~4.Ot/h; 2 two tanks connected, material can be milled from -325 mesh (or -400 mesh) to -2μm; 3 can be continuously produced; 4 high stirring strength, grinding (peeling) High efficiency; 5 all parts in contact with the material are lined with polymer material lining, which can prolong the service life and prevent metal contamination of materials. Due to the above characteristics, the equipment is suitable for wet superfine grinding (peeling) of kaolin, heavy calcium carbonate, talc, mica and other materials, especially suitable for the continuous production of large ultra-fine material production plants. The technical parameters are shown in Table 3.
   Table 1  Table 2  table 3