Impact crusher and hammer crusher are the main equipment of mining, they both use impact principle to crush materials. Although in terms of appearance, hammer crushing and impact crushing are somewhat similar, but there are essential differences between the two. Which is better, hammer crushing or impact crushing for gravel production? Here is the answer for you:
Here, we mainly start from the aspects of structure, application and effect, and introduce the difference between hammer crusher and impact crusher.
Hammer crusher: It is mainly composed of body, transmission device, rotor and so on. The transmission device includes a V-belt, a winding motor and a pulley; the rotor with a hammer head is a part of the hammer crusher, and there is a layer of material on its surface to avoid excessive wear of the rotor.
Impact crusher: The impact crusher is mainly composed of a frame, a transmission mechanism, an impact plate and a rotor. The frame is divided into upper and lower parts, and the middle is connected by bolts; the impact plate is suspended inside the crushing chamber; the plate on the rotor The hammer is its main wearing part, and most of them are of integral cast steel structure.
Hammer crushing: It is mainly suitable for the compressive strength of materials within 200 MPa, such as coarse crushing and fine crushing of limestone, gypsum, bricks, slag, coal gangue, salt and other materials. It can directly crush materials with a large particle size of 600-1800 mm to below 25 or 25 mm, without the need to configure the second and third crushing equipment, which saves investment.
Impact Crusher: It is suitable for processing all kinds of coarse, medium and fine materials (granite, limestone, concrete, etc.) with side length less than 500mm and compressive strength less than 350MPa. It is widely used in processing and other fields, and is an ideal processing equipment for aggregates.
The impact crusher goes through the process of 2-3 times of impact shaping. The product has a good grain shape, which is rounder than the hammer crushed grain shape, and the crushing is relatively large, generally 10-25, and the highest can reach 50. Usually, secondary shaping is performed. It is used, but the powder content of the product is also high due to the high number of blows.
Through the above introduction, it can be found that hammer crusher and impact crusher have different degrees of difference in structure, application and effect. In addition, these two types of crushing equipment have their own advantages, and it is impossible to simply say which one. The specific selection and use need to be determined according to the actual use environment. If the hardness of the material to be processed is high or there are strict requirements for the finished product, it is inclined to impact crushing, otherwise it is better to choose hammer crushing. There are also users who will choose the combined operation of “hammer crushing + impact crusher” to make sand. These can be selected according to the actual needs of users. It is necessary to comprehensively consider the consideration of finished aggregate particle size, environmental protection performance and investment costs.