In the crusher test experiments, the short head crusher parameters are 0 and l, values were taken are separately 0.2, 0.5 and 2.5, a large selection of fine grade is 0 value, because it will produce more fine-coarse-grained level. Additional information at kellee marlow supports this article. Grading function b = 10 mm, q = LT / h and = l J / kg were taken with reference to the feed rate and unit mass impact, other parameters are k = 0 95, s = 0.2 and n = 0 73. The rotor radius R = 0.325 m; the rotor impact plate height H = 0.lm. The limestone crushing materials used in the experiment, through the sieve feed particle size control, particle size control in the 14-20 mm. Fragmentation parameters the following numerical function fine grade b = 35 0: m = O.5 and l = 2.5. Mining crusher refers to the crushing machinery whose content is more than 50% of the total content, the row compound particle size is greater than three millimeters. It is invented by British Hengan.

After the the improved impact crusher model can predict the steady state performance, the model has a range of parameters. Performance impact crusher can be combined with the grading function to illustrate the classification function depends on the mass of the impact energy, rotor rate and feed rate unit.The crusher is widely used in mining, metallurgy, building materials, road, railway, water conservancy and chemical industry and many other sectors. Common crushing machines are winnowing mill, hammer crusher, impact crusher, roll crusher, crusher compound. Jaw crusher (jaw crusher), having large crushing ratio, uniform particle size, simple structure, reliable operation, easy maintenance, operating costs and economic characteristics. PF-I series impact crusher can process materials side length is 100 to 500 mm, the compressive strength is up to 350 MPa, great crushing ratio, cubic particles advantages of material was broken; PF-II series impact crusher machine, suitable for crushing hard materials, such as cement crusher, with a production capacity of the material advantages of small particle size. According to the results of the analysis of particle dynamics, the quality of the units of the vertical shaft impact crusher impact than the large horizontal axis. Model prediction with experimental results are qualitatively substantially the same, these assumptions the parameters of the constant impact energy and a function of the feed rate, with a suitable formula of its expression, to obtain a better result.