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With the rapid develop of the modern technology, foreign country has optimized the crushing and grinding machine from decades ago. Our country has a late start research on the crushing and grinding mode. Many experts have optimized the structure of the jaw crusher in nigeria in recent years.They have research the crushing and grinding machine with the advanced technology to realize the function of the automatic control, automatic clean, and other advanced features.

As China economy develops rapidly, it has led many different industries to extend their production scale such as metal and non-metal industry, cement plant, construction industry and gravel metallurgy. The concrete crushers for hire are playing key role in Chinese construction industry and its market share is getting larger and larger. There is possibility that the rock rock crusher manufacturing industry will become the supporting industry that will have influence on the national economy.

The stone crusher is playing an important role in many industries like the cement making, chemical engineering, electricity, mining, metallurgy, construction materials, refractory matter and coalmines. For example, stone crusher plant germany can be used to make sand for the construction industry, to do fine crushing of the iron ore and quartzite in the mining industry, and to crush raw materials in the ceramics industry.

As one of the most important crushing machines in mining industry, stone crusher in pakistan has been developing very fast since the establishment of the nation. However, there are still differences between Chinese manufacturers and the worlds advanced technology that needs us to pay more attention.There exist some deficiencies and flaws in the crusher manufacturing process. First, the whole crushing procedure is too simple to realize multi-functional breaking.

In the process of industrial development in China, crusher manufacturing greatly promotes its development and has also become a successful example in China's industrial sector. After in-depth study of the current development of international and domestic construction machinery industry, especially the advanced technology of ball mill for ceramics, we holds the view that it is particularly important to further develop and improve the manufacturing level of mining machinery.

The crusher has been researched since 1960. There are a variety of specifications at present. The domestic crushers for iron ore has four specifications such as 900, 1200, 1650 and 2100. Technology performance can be summarized as: this machine can be able to provide more fine-grained raw materials. Therefore, it is often called as super tertiary impact crusher.

Aggregate crushing equipment is mainly used for the aggregate crushing operation; depending on the different feeding size and the particle sizeof the finished product, the aggregate crushing can be divided into many types. The quarry crusher is collectively referred to as the aggregate crushing equipment. The aggregate crushing equipment has a wide range of applications in the mining, building material, highway, railway,water conservancy and other sectors.

According to statistics, sand making equipment at present, the urbanization level of the central region is only 40.3%, in order to reach the level of 48% in the year of 2015, peoples needs to housing, transportation and integrated infrastructure will be increased, which will directly lead to the demand to sand making machine.As for the construction machinery manufacturing industry, the mining machinery with stone crusher as its lead has become one of the fastest growing heavy-duty machine industries in China.

The quarry crusher has high productivity, small energy consumption, safety use, easy maintenance and wide range of applications. When design quarry crusher we need to pay particular attention to the design of wearing parts, including quarry, bearings,grate bar, impact plate; this paper mainly describes the design of grate and impact plate.

The quarry stone crusher is very suitable for crushing the mining ore and stone. Every year, a large number of raw materials and the reused fertilizers need to be crushed by the crusher in many industrial sectors, such as metallurgy, mining, chemical and cement industry. For example, in the concentrator, in order to achieve the monomer separation of the useful minerals in the ore, the quarry crusher is needed to be used to crush the raw ores to the required particle size of the grinding process.