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 fine jaw crusher, sand resources is a place of natural resources, non-renewable in the short and long-distance transport, with the increasing development of infrastructure in our country many area appears natural sand resources gradually reduce, or even no natural sand, the concrete supply and demand especially sand, and sand prices higher and higher, and in some areas up to 110 yuan / ton, sand peak Shihai no sand available, affecting the progress of the project construction. Artificial sand into the construction market is the need to build the market development of the situation. At present, the domestic mature technology of 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. So jaw crusher, 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 will have a fundamental difference with the natural sand, artificial sand production regardless of size jaw crusher Factory Which is good, always in fixed production sites, production technology and equipment, the quality of their products is completely control and stability, and therefore improve the quality of artificial sand producers, improve the artificial sand production business requirements are necessary and possible. People if long-term inactivity will lead to decline in physical function, muscle contraction, feel powerless again when you want to be active. The same is also true crusher. Crusher is a lot of our work indispensable, hammer crusher crushing machine is a high-speed rotation. Some work without it there is no way to work, so we use the time we should know know it's maintenance, hammer crusher is how to operate and maintain it? (1) To empty start, pay attention to the crushing chamber should be emptied before the material down. (2) to be associated with the machine on, the next step before the open parking made contact, according to the order open parking for proper operation. (3) maintaining uniform feeding, and care not to feed the metal debris. (4) regularly examine the use of hammer, liner, and so easy to wear and easy wearing parts, if they are found promptly. (5) pay attention to check the height of the expected size meets the quality requirements, such as not, should be replaced or adjusted grate grate bracket. (6) regular checks of all equipment anchor bolts, liner bolts, loose jaw crusher machine, if loose, should be tightened. (7) should always look at lubrication, lubrication system in good condition. Rotor bearing temperature should be kept below 60 ℃, the maximum does not exceed 70 ℃, if found overtemperature reasons should be identified, to take timely measures to eliminate. Jaw crusher, North mine Zhongcheng, jaw crusher manufacturers from Shenyang North Mine Zhongcheng machinery Limited. Jaw crusher, North mine Zhongcheng, jaw crusher manufacturers Shenyang North Mine Zhongcheng equipment Limited (sybkzc.com) (www.sybkzcjq.com) this year introduced a new upgrade, the above picture is for reference only, please You call Tel picture on this page or to obtain the latest information, contact: Yang Zhongbin.