Hammer crusher and jaw crusher are common crushing equipment in the mine/building materials industry. They have large feed inlet and high crushing efficiency and are mainly used for coarse crushing of various ore materials. But they are different in many parts, which is better?
The appearance and working principle of the 2 crushers are different. The jaw crusher is of the curved dynamic extrusion type, and the materials are crushed in the crushing cavity composed of the moving jaw and the fixed jaw. The hammer crusher is mainly broken by the impact, shear and tear of the rotating hammer head, the mutual impact between materials and the counterattack of the lining plate.
Hammer crusher is mainly used to crush ores with low hardness, and its compressive strength is generally lower than 200Mpa, such as limestone, bluestone, coal gangue, etc. When crushing hard materials, the hammer head is seriously worn and the cost of frequent replacement is high.
The adjustment of the discharging granularity of the hammer crusher is realized by changing the bottom sieve plate. There are three adjustment modes of jaw crusher: base plate adjustment, wedge adjustment and hydraulic cylinder.
Hammer Crusher is rarely used in aggregate production line. Although the process is simple, the yield is low, it is easy to be over crushed, and there are many powdery materials. Moreover, the finished aggregate may have microcracks, low compressive strength, which will affect the quality of aggregate, sales and price. Therefore, it is often used as auxiliary sand making machine.
The main advantage of hammer crusher is that the ore with low hardness can be formed in one time. For the production line with output < 300t/h, a single hammer crusher can replace a jaw crusehr + a impact crusehr.
The main advantages of jaw crusehr are simple structure, convenient maintenance, high wear resistance, high cost performance, suitable for all kinds of hard ores. However, due to the high content of needle and flake aggregates in the discharge, it is necessary to cooperate with impact crusher for shaping.