Explain various technical advantages crusher has 1, can effectively deal with a large amount of material moisture, prevent clogging of the crusher when processing the material moisture content is too large, crusher feed chute and back plate can equipped with heating devices to prevent the adhesive material. Crusher not be equipped with the bottom of the sieve can effectively prevent clogging. The hammer crusher heating mode can not be used to prevent the adhesive material, and be equipped with the bottom plate, roll crusher, increases the likelihood of blockage. 2, can easily be flexibly adjusted the expected size, hammer crusher, wide range of adjustment counterattack crusher are several ways to adjust the particle size of the material, such as adjusting the rotor speed, adjusting the gap between the back plate and grinding chamber and the like. Gap adjustment can be adjusted by mechanical or hydraulic, hydraulic adjustment system can be easily fortune through local operating buttons or control systems to complete the adjustment gap. The hammer crusher discharge size adjustment can only achieve by replacing the bottom of the sieve. 3, wear wearing parts than hammer crusher small, high efficiency metal crusher hammer wear only appear in Looking material side. When the rotor speed is normal, the feed will drop to the board hammer surface (of attack), the back and side panels are not being worn hammer. Even Looking material this side rarely wear. 4, impact crusher is suitable for both soft material and is suitable for very large material hardness crusher plate hammer mechanical clamping structure firmly fixed on the rotor, with a great moment of inertia when the rotation with the rotor. With respect to the hammer crusher (hammer was hanging state), rotor crusher has a greater momentum, crushing harder to adapt to the material, while lower energy consumption. 5, easy replacement of spare parts, maintenance costs reduced accordingly installed on only six plate hammer crusher rotor, provided with special tools can easily replace the board hammer, hammer only replacement of a board one shift time. Replace the bottom of the grinding chamber grinding rod is also only several tens of minutes, significantly reducing the time and cost of repair and maintenance. National Standard GB / T14684? 2001 "building sand" revised primary content is to increase the use of artificial sand for building sand, to determine the definition of artificial sand, technical requirements, test methods. With the reform and opening up the development, gravel industry, like other building materials industry has developed rapidly. Aggregate annual output of more than 600 million tons by the pre-reform period to 15 million tonnes, including about 600 million tons of sand. Currently the majority of our area applied sand is a natural sand, natural sand resource is a local resource, is within a short and long-distance transport of non-renewable, with the increasing development of infrastructure, the emergence of natural sand resources in many areas of China gradually reduced, or even no case of natural sand, crusher manufacturers, concrete sand contradiction between supply and demand is particularly prominent, while sand prices higher and higher, and in some areas up to 110 yuan / ton, sand peak Shihai no sand available, impact progress of the project construction. Artificial sand into the construction market is the need to build the market development of the situation. At present, Shanghai crusher, domestic technology maturity artificial sand production line has a number of production equipment and technology of artificial sand fully equipped, at home and abroad have different brands and models of sand making equipment available. Therefore, the development of artificial sand is imperative. Sand quality control thanks to the use of test unit after entering quality construction sand responsibility falls almost entirely upon the user, this control is actually very passive and helpless, which led to the accident occurred some projects. The reason is mainly the quality of the natural sand production methods and producers of the decision. The artificial sand production has been a fundamental difference between the natural sand, artificial sand production regardless of size, always in fixed production sites, production technology and equipment, the quality of their products is completely controlled and stable, and therefore, improve Quality artificial sand producers, improve the artificial sand production business requirements are necessary and possible. Roll crusher, North mine Zhongcheng (certified), Shanghai crusher from Shenyang North Mine Zhongcheng machinery Limited. Shenyang North Mine Zhongcheng equipment Limited (sybkzc.com) (www.sybkzcjq.com) Liaoning Shenyang, machining leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In North mine public into leadership with the staff warmly welcome all inquiries negotiations to create the North mine public into a better future.