According to the role of broken power crusher can be roughly divided into two categories: (1) crusher; (2) mill. Crusher generally larger block of material, products, coarse grain size, usually greater than 8 mm. Its structure is characterized by broken pieces of a certain gap between, do not touch each other. Crusher broken machines can be divided into coarse, medium and minor broken machine. Grinding machines are generally handled by smaller materials, product particle size is fine, up to 0.074 millimeters, even more detailed. Structural characteristics of its components is broken (or the media) contact with each other, the media used is steel ball, steel bars, such as gravel or mineral block. However, some machinery is both crushing and grinding role, such as from the mill. ∮ 5. 5 × 1. 8 meters from the ore processing mill size limit of up to 350-400 mm, the product fineness of -200 up to about 40% head.
Under the broken ways the characteristics of mechanical structure (the principle of action) to the division, in general, divided into six categories.
(1) jaw crusher (Tiger I). Is broken by the movable plate E to the fixed pressure periodically E-board, will be caught in the crushing of the ore block.
(2) cone crusher. Mine is both within and outside the block between the two cone, outer cone fixed with eccentric cone for swing, which will be caught in the crushing of the ore block or broken.
(3) Roll Crushers. Ore blocks in the two opposite rotating roller between the yen, the main subject for the crushing, but also with the role of grinding peel, roll surface profile was also the role of cleavage broken.
(4) the impact crusher. Ore block by rapid rotation of the impact of the role of moving parts have been shattered. Falls into this category can be divided into: hammer broken machine; cage crusher; counterattack crusher.
(5) mill. Ore in the cylinder by rotating grinding media (steel balls, steel, gravel or mineral block) the impact and abrasive was crushed.
(6) other types of broken grinding machine.
A roller mill: by rotating roller crushed material.
B, plate mill: the use of vertical or horizontal axis of the disk rotation axis as the broken parts.
C, centrifugal mill. The use of high-speed rotating components and media production to complete the production of centrifugal force, the role of fragmentation.
D, vibration mill. The use of high frequency rotor vibration, so that media and materials to complete each other carom breaking role.
Various types of crushers have different specifications, the use of different. At present, the elected multi-purpose plant rough broken jaw crusher or cone crusher cycle; in broken standard type cone crusher; chronology using short head cone crusher type. Rod mill with coarse grinding, fine grinding by ball mill.

Performance and use of gravel:

1.sand making machine
Main Features: 1)sand making machine is a new development in the nineties, fine stone equipment, is also widely used in the world to replace broken cone machine, on the roller machine, ball mill model. 2) the structure of novel, unique, smooth operation. 3)sand making machine small energy consumption, high output, than broken. 4) Equipment small, simple, convenient installation and maintenance. 5)sand making machine with plastic features, product was cubic-shaped, large packing density. 6) the production process, the stone can be formed to protect the bottom of the fuselage without wear and tear, durable. 7)sand making machine a small number of easy to wear pieces of hardware with special wear-resistant material made of small size, light weight, ease of replacement parts.
2. Jaw Crusher
Have broken than large, uniform product size, simple structure, reliable operation, maintenance is simple, characterized by economic and other operating expenses. The jaw crusher series widely used in mining, smelting, building materials, roads, railways, water conservancy and chemical industry and many other departments, non-breaking strength of more than 320 different kinds of materials MPa.
Breakers back function to deal with side length of 100 ~ 500 mm the following materials, the compressive strength of up to 350 MPa, with more than broken, and broken particles after the materials were the advantages of the cube. Counterattack crusher for crushing of hard materials, such as broken limestone cement plant with production capacity, and the expected advantages of small size.
3. Roll Crushers
For beneficiation, chemical, cement, building materials, such as the industrial sector in the chronology of various middle-breaking and the hardness of the ore and rock the following purposes.
4. Composite Crusher
Applicable to building materials, mining, metallurgy, chemical industry broken limestone, clinker, coal and other minerals, the compressive strength of not more than 140 MPa not more than 15% humidity. Red card composite crusher features: large capacity; broken ratio, low energy consumption; sealing well, smooth operation; easy maintenance.
5. Hammer crusher
Applicable to a variety of brittle materials broken mineral. Material to be broken coal, salt, white-Asian, gypsum, alum, brick, tile, limestone and so on. Compressive strength of the materials is not more than 100 MPa, humidity is not more than 15%.