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What is the difference between jaw crushing and hammer crushing for crushing large rocks?
view：569 source： Time：2020-4-7
Hammer crusher is abbreviated as hammer crusher, mainly used for stone crushing in building materials industry, highway and railway construction, and other industries using stone materials. This product is suitable for crushing various materials of medium hard and below, such as limestone, gypsum, bricks, slag, coal gangue, salt, chalk and other materials. It can directly crush materials with a large particle size of 750-1500mm to about 20mm. Jaw crusher is abbreviated as jaw crusher. It is widely used for coarse crushing of various minerals and rocks in various industries such as mining, building materials, highway, railway, water conservancy, chemical industry, etc., and coarse crushing of various ores and bulk materials. So, when to use a jaw breaker and when to use a hammer break, you must first understand the differences in these aspects!
1. Different appearance and working principle Friends who know these two types of equipment can be distinguished from the appearance, and the working principle is also very different. The working mode of the jaw crusher is extrusion crushing. The crushing cavity is composed of two jaw plates, a movable jaw and a static jaw, to simulate animals. The two jaws move to complete the material crushing, so it is also called "tiger's mouth"; the hammer crusher is mainly crushed by impact. After the equipment is started, the motor first drives the rotor to rotate at a high speed, and the material enters the hammer crusher cavity and is subjected to rotation The impact, shearing, tearing of the hammer head, the mutual impact between materials and the counterattack of the lining board will break. 2. Different broken materials The jaw crusher can crush various soft and hard materials, such as: granite, quartz stone, diabase, river pebble, iron ore, etc. Hammer crushers are mainly used to crush ores with low hardness, and their compressive strength is generally less than 200Mpa, such as limestone, bluestone, coal gangue, etc. The hammer head wears severely when crushing hard materials. It may cost thousands of dollars to replace a set of hammer heads. For ordinary high manganese steel hammer heads, some need to be replaced in 2 or 3 days, which is too costly. 3. Different discharge adjustment methods The adjustment of the discharging particle size of the hammer crusher is achieved by replacing the bottom sieve plate. There are many options for the adjustment method of the jaw crusher, including pad adjustment, wedge adjustment and hydraulic cylinder. 4. Different production line configuration Generally speaking, the content of needles in the jaw crusher is relatively high, and it needs to be shaped with a counterattack, so we often see the configuration of jaw crusher + counterattack. Hammer crushers are mainly used for industrial first-level crushers. They are formed at one time without the need for two-stage crushing and shaping process. Therefore, in small and medium-sized production lines, hammer crushing is often used alone. 5. Different applications of sand and gravel aggregate lines Hammer crushers are rarely used in sand and gravel aggregate production lines. Although the process is simple, the yield is low, easy to be crushed, and there are many powdery materials. The finished aggregate may have micro-cracks, low compressive strength, and affect the aggregate Quality also affects sales and prices, so it is often used as auxiliary sand making equipment. Jaw crusher is often used as coarse crushing equipment in aggregate production line, followed by impact crusher or cone crusher for medium crushing, and then sand making machine for fine crushing and reshaping. Hammer crusher and jaw crusher have large crushing ratio, simple structure and high output. They are common coarse crushing equipment in the mining industry. The former crushes materials by impact, and the finished material has a more uniform particle size and less pin content. The limitation is that it is not suitable for hard rock crushing and the hammer wears quickly. The jaw crusher is suitable for materials with various hardness, but the limitation is that the particle size is not ideal. The follow-up needs to be equipped with a secondary crusher (cone crusher and impact crusher). For those with high requirements for the particle size of the finished product, a sand making machine is also required. , The material is finely crushed and then reshaped. It is worth mentioning that the hammer crusher integrates crushing and shaping functions when crushing limestone, bluestone and other soft rocks, which can achieve the effect of breaking the top and the two. Therefore, when using these two types of crushers, you must choose them according to your actual situation, and use the crushers in the right place to maximize their value! If you want to know more about the crusher, you can leave a message or call: 0570-3393766
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