Jaw crushers, also known as jaw crushers, jaw crushers, jaw crushers, are widely used in the coarse crushing of various minerals and rocks in various industries such as mining, building materials, highways, railways, water conservancy, and chemical industries. Various ores and bulk materials are coarsely crushed.
Hammer crusher is abbreviated as hammer crusher, which is 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.
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 understand these two types of equipment can be distinguished from each other in terms of appearance, and the working principle is quite different. The working mode of the jaw crusher is a curved extrusion type, and the material is compressed in the crushing cavity composed of the movable jaw and the fixed jaw. Squeeze crushing; the hammer crusher is mainly crushed by the impact, shearing, tearing of the rotating hammer, the mutual impact between the materials and the counterattack of the liner.
2. Different broken materials
The jaw crusher can crush all kinds of soft and hard materials, with a compressive strength between 300-350Mpa, such as: granite, quartz stone, diabase, river pebbles, iron ore, etc.
Hammer crushers are mainly used to crush ore with low hardness, and the 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. Once chatted with a user, he used a hammer to break the granite. He had to change the hammer in less than two days, which not only delayed production but also increased the input cost. Finally, he wanted to replace the equipment, which was time-consuming, laborious and costly.
3. Different discharge adjustment methods
The adjustment of the output particle size of the hammer crusher is achieved by replacing the bottom sieve plate.
There are many choices of adjustment methods for jaw crushers, including three types: 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 in industrial secondary crushers. They are formed at one time and do not require secondary crushing and shaping. Therefore, they are often used alone in small and medium-sized production lines.
5. The application of sand and gravel aggregate production line is different
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, there are many powdery materials, and the finished aggregate may have microcracks, and the compressive strength is low, which affects the aggregate Quality also affects sales and prices, so it is often used as auxiliary sand making equipment.
Jaw crusher is often used as the rough crushing equipment of aggregate production line, followed by counter-attack crushing or cone crushing, and then adding sand making machine (shaping machine) for shaping.
Sand aggregate production line
After understanding the 5 major differences between jaw breaking and hammer breaking, we must choose equipment according to our own needs, and we must understand our material properties and production requirements (for example, whether the requirements of the finished material are high), so as to configure the best The best production line equipment avoids subsequent production problems like the ones mentioned above. If you have any questions, please contact the editor for consultation.
