China in the late fifties there Crusher came in before the 1980s, domestic crusher limited to dealing in coal and hard materials like limestone. Until the late eighties the introduction of the original Shanghai KHD-type construction machinery factory hard rock crusher, fill the gaps. But behind foreign twenty years. Figure 1, 2 shows two kinds of crusher in the cavity design, the rotor structure, in particular, board materials and chucking hammer method is fundamentally different. Made of hard rock crusher, at the beginning of its core parts hammer dependent on imports, domestic plate hammer in the "85" as a ministerial-level scientific research projects during the project success, not only domestic plate hammer to replace imports, and has a large number of export to Europe, Japan and other countries. Wear-resistant materials breakthroughs have led to even more powerful hard rock crusher, only Shanghai Road and Bridge Construction Machinery Co., Ltd. (hereinafter referred to as road and bridge construction company), for example: ten years, hard rock crusher sales increased by 15 times. 10 times the export growth for China to contribute to capital works.
For example: Ministry of Transportation to improve the quality of highway construction in China, raised stone crushing of concrete pavement research projects, and included in the country "85" research project. The project of a prototype device in the Northeast failed to use the site. The user to switch to hard rock crusher after the production of stone, concrete, fully comply with requirements of the highway slip road. So hard rock crusher reputation has been boosted. Communications Department, Liaoning Province, once the device has, as a tender to undertake the necessary conditions for road construction. According to statistics, road construction in the provinces and cities nationwide have adopted the hard rock in the crusher as road stone Preparation Equipment, to break up to 300MPa compressive strength of basalt, andesite and other hard materials, and meet the following gradation 19.6mm stone. The flakiness percentage content of less than 10%. There are currently more than 400 units in use around, not only to solve a problem in highway construction, but also blocking the import, as the hard rock crusher of the leading manufacturers, road and bridge construction companies from Shanghai to develop, hard rock Crusher has three series of dozens of specifications. Figure 3 shows the standard type. Shown in Figure 4 is derived , allowing the feed size up to 600mm, suitable for reinforced concrete crushing. Figure 5 shows the derived V-shaped, increasing both the entire board, the change of particle size distribution, increasing the proportion of fine material.
Germany HAZAMAC produced both crusher broken into coarse, medium broken, small broken three purposes, is divided into for hard materials and hard materials in two different occasions, so the combination of a dozen models. To meet the needs of all aspects of the market. In contrast, our crusher broken hard rock areas although there is a breakthrough, but the lack of variety, size small. Demand from the market point of view, should strengthen the development of the following types of products.
mquina de flotacin: http://www.chinazhongke.net/esp
Immpact Crusher: http://www.china-xingbang.com/37.htm
chancadora de piedra: http://www.xingbang.es
Jaw Crusher
impact crusher
chancadora de piedra
mquina de flotacin
Molino de bolas
