Classification of cast sand

Classification of cast sand
According to the basic ingredients of casting raw sand, sand can be divided into two categories: silicon sand and non -silicon sand.
The quartz crystals in nature can be divided into quartz, scales quartz, and square quartz.
Different polycrystalline types. There are two types of crystal transitions in the form of three crystals. This transition can usually be divided into two transition horizontal and vertical transitions. Among them, the first horizontal offset of the primitive fracture siliconane main chain, the silicon oxygen destroys the original key, and then forms a new skeleton.
The composition of the raw sand includes particle size, particle size distribution, particle shape and surface properties.
At present, the treatment methods of the original sand mainly include water washing, washing and floating.
Magnesium oxide was obtained through high temperature roasting, and then crushed and separated from the magnesium ore. The main ingredients are magnesium oxide.
Chromium iron ore obtained by chromium iron ore, main mineral chromium iron ore, magnesium chromium iron ore and aluminum · magnesium -chromium iron ore, thereby determining CR203, which is the main chemical composition.
Olive sand is often said that magnesium and olives are the same as the same product, but it is used as the main component as an olive sand casting should be magnesium olives.
Baozhu sand, also known as ceramic sand, is a new type of casting made of aluminum ore with high temperature melt, compressed air blowing, and screening. It has the advantages of granular spherical, high fire resistance, neutrality, low rate of crushing rate. It is currently good comprehensive performance sand