Ceramsite is generally used to replace gravel and pebbles in concrete. It uses a variety of raw materials such as clay, slate, shale, coal gangue, and industrial solid waste, and is made of ceramics. Made by sintering. Ceramsite sand has many advantages such as low density, thermal insulation, excellent impermeability, excellent alkali-resistant aggregate reactivity, low water absorption, good frost resistance and durability. In particular, ceramsite sand has low density, is porous internally, has a relatively uniform shape and composition, and has a certain strength and solidity. Therefore, it has multi-functional characteristics such as light weight, corrosion resistance, frost resistance, earthquake resistance and good insulation. Ceramsite sand is a substitute for medium and low-strength proppant such as natural quartz sand, glass balls, and metal balls. It is mainly used for underground support in oil fields to increase the production of oil and natural gas. It can also be widely used in building materials, horticulture, food and beverage, refractory insulation materials, chemical industry, petroleum and other sectors, with a wide range of application fields.
At present, my country's ceramic production equipment all uses industrial rotary kilns. The cylindrical main kiln body is placed on the supporting roller at an inclination angle of about 3° to the horizontal. The material enters the kiln at the high end. Under the action of the rotary motion of the kiln body, the material rolls down from the high place (kiln tail) to the low place (kiln head). At the same time, at the kiln head, the high-pressure fan blows the pulverized coal ( Or other fuels such as natural gas) are sprayed into the kiln and fully burned. The heat generated causes physical and chemical changes in the material, causing expansion. After cooling, it becomes ceramsite.
The equipment of the ceramsite sand production line mainly includes: raw material storage warehouse, dust suppression room, induced draft fan, main kiln body, coal injection system, control cabinet, etc. Among them, the feeder, kiln speed and coal volume in the lower part of the raw material bin are all steplessly adjustable in order to adjust the process parameters and obtain maximum output while ensuring product quality.