The structure of a rock is a combination of the degree of crystallization, particle size, morphological characteristics and cementation conditions of the minerals that make up the rock. The finer the particles, the tighter the bonding, the stronger the cementation, the higher the strength and hardness, and the harder it is to break with machines and tools. For example, quartzite, which is composed of silica-cemented quartz particles, is more resistant to fracture than many coarse-grained igneous rocks, including granite, diorite, etc.

According to the crystallization degree of the mineral particles that make up the rock, the rock can be divided into three major types: crystalline rock, amorphous rock and clastic rock. Crystalline rocks include igneous rocks, metamorphic lithology and some sedimentary rocks; according to their grain size, they can be subdivided into coarse crystalline rocks (grains larger than 1 mm), mesocrystalline rocks (grains 1-0.1 mm), and pericrystalline rocks. (grains are 0.1-0.01 mm) and micro-grains (grains are 0.01-0.02 mm). The mineral particles of non-quality rocks are all below 0.002 mm. Clastic rocks are cements or mechanical combinations of various rock fragments. . Particle size varies greatly. Among them, conglomerate particles are larger than 1-2 mm; sandstone, 1-0.1 mm, fine sandstone, 0.1-0.01 mm, and mudstone, less than 0.01 mm. ·

The glue structure is mostly evenly distributed between particles, and the cementation strength varies depending on the properties of the cement. According to the cementing strength, the cements are arranged in order: siliceous, iron, calcareous, muddy, marl and gypsum, etc. When rock is broken, its fracture surface can be along the grain (crystal) interface or across the grain, depending on the relative strength and stress properties of the crystal and cement. The structure of rocks refers to certain macroscopic phenomena that occur due to geological or dynamic effects when or after the formation of rocks, including the massive and rhyme structures of rock purple rocks, the bedding of sedimentary rocks, and the schizophrenia of metamorphic rocks. wait. The block structure has no obvious effect on mechanical crushing. Rhyostructure, bedding and schistosity often cause anisotropy in rocks.

Commonly used rock crushers

There are many types of crushers, including jaw crushers, impact crushers, cone crushers, vertical impact crushers, tertiary crushers, hammer crushers, etc. Although the name is just a code name, crushers with different names have different functions. Times are progressing, society is developing, and the crushers in my country's mining machinery industry are also changing rapidly. The materials crushed by the crusher include granite, basalt, cobblestone, limestone, etc. The models range from small to large, among which the large rock crusher is a representative one.