Ore crushing ore production is an important part of one of the conventional crushing grinding, the crushing of grinding energy consumption 12% -25%, and crushing efficiency is higher than grinding. Larger scale mining processing plant, feed size reduction grinding economic benefits to the enterprise, there would be more remarkable. According to the research shows that, for the scale of 10 million t concentrator, when the crushing of the final product down to size by the-20mm-12mm, although crushing production capacity decreased by 30%, but the ball mill grinding efficiency can be increased 16% annual savings of more than 30,000 degrees lower energy, accounting for about 10% of plant electricity consumption. So grinding and crushing work which, to the greatest possible efforts to improve crushing, grinding in a more convenient operation, saving the cost of grinding. Therefore the plant design, crushing and grinding work arrangements as well as the proportion of broken equipment selection, will directly affect the economic and technical indicators concentrator. Concentrator in the crushing process, there were two major and three stage crushing process. Three stage crushing process, the second step in the screening crusher equipment and inspection equipment to form a closed, doing so in order to ensure that products meet the requirements of size, does not affect the conduct of the grinding operation. Sec crushing process is suitable for underground mining method, the total reduction ratio is not used for 15-25 ore business. Under normal circumstances most of the plants are chosen Sec Process - closed circuit, just a few of the re-election of factory choose to use two - open processes. Beneficiation process flow in the three stage crushing process has three sections - open and three sections of the process - closed two kinds. Under normal circumstances, three stage crushing located before the pre-screening, but can also be no pre-screening process, depending on the crusher feed size. General three-stage process plant is rarely used - in the form of open, because this method is not good control product discharge size. Most three-stage selection process plant - closed, this process is the most common three-stage process, large, medium and small concentrator can be applied. Currently the most commonly used plant equipment generally have coarse crushing jaw crusher or a gyratory crusher, broken generally standard or medium-sized cone crusher cone crusher, crushing generally short head type cone crusher and double roll crusher machine, there is also counterattack or hammer crusher. The latter three crusher is only suitable for crushing medium hard ore soft or fragile nature, and the more obvious shortcomings, double roll crusher roller liner easy to wear, require frequent maintenance, low production capacity; hammer crusher and the back plate is very easy to wear damage, need to constantly be replaced. Article Link: http://xinyunposuiji.com/ps/ Article Keywords: crusher crusher equipment corporate website: drying equipment http://www.xinyunhongganji.com (crusher equipment http://xinyunposuiji.com) bake dry machine manufacturers http://www.0371hgj.com Mianshaozhuanji equipment http://www.xinyunjixie.com Aerated Concrete http://www.xyzg555.com