The inner structure of cement ball mill According to information, in recent years, the municipal facilities, road construction and even real estate industry growing vigorously. And cement plant has also developed along with the downstream industry all over the country. However, some small cement plants with old equipment, low productivity, production environment substandard have to stop for consolidation. Any way, it is a big impact for cement industry. Such as Shandong cement factories have to be integrated from 500 to 5 companies, Recently, Hongxing heavy industry technology has assisted more and more cement enterprises expand to sand aggregate industries, new material and non-metallic mining field.The mill is usually divided into at least two chambers,(Depends upon feed input size presently mill installed with Roller Press are mostly single chambered), allowing the use of different sizes of grinding media. Large balls are used at the inlet, to crush clinker nodules (which can be over 25 mm in diameter). Ball diameter here is in the range 60-80 mm.
In a two-chamber mill, the media in the second chamber are typically in the range 15 40 mm, although media down to 5 mm are sometimes encountered. As a general rule, the size of media has to match the size of material being ground: large media can’t t produces the ultra – fine particles required in the finished cement, but small media can t break large clinker particles. Mills with as many as four chambers, allowing tight segregation of average sizes, were once used, but this is now becoming rare. The engines are categorized into piston engine, ramjets, rocket engine, turbine engine. Work process: intake compression Combustion injection expansion for power exhaust. (1) the intake stroke The working fluid into the cylinder is pure air. David Karp spoke with conviction. Due to the smaller resistance of diesel engine intake system, terminal pressure on air intake is pa = (0.85 to 0.95) p0, higher than gasoline engine. Inlet end temperature is Ta = 300 340 K, lower than gasoline engine.
(2) compression stroke The compressed refrigerant is pure air, diesel engine compression ratio is higher than that of gasoline engine (do usually? = 16 22). Compression pressure at the end is 3 000 to 5 000kPa, compressed temperature at the end is 750 1000 K, much higher than the ignition temperature of diesel engine (about 520 K). (3) The power stroke Near the end of compression stroke, under the function of the high pressure pump, diesel is spurted into the cylinder combustion chamber on about 10MPa high-pressure fuel injector, then mixed with air in immediate through time, namely self-ignition combustion.
