Introduction to Petroleum Proppant Process (I)

Fracture

Bauxite mined is generally 300~500mm in size and contains a small amount of water. Generally, a two-stage crushing system consisting of jaw crusher and hammer crusher is adopted to control the particle size to be ≤ 8mm.

Bauxite after entering the plant can be stacked separately according to different grades. Use according to indicators.

Manganese (Mn) is usually added in the process of producing ceramsite sand to reduce the sintering temperature and dye the product into dark color. At present, most domestic manufacturers use low-grade (~50%) manganese ore or manganese ash as the source of manganese.

mixed ingredients

Bauxite, manganese powder, recycled materials and other materials are respectively transported to their respective silos. Speed regulating belt scales are set under the silos to realize automatic batching and metering of materials.

Grinding

Generally, the ball mill used for drying and grinding is equipped with a powder concentrator to form a closed circuit system. The grinding efficiency is high.

The hot air for drying materials can come from the waste gas of rotary kiln, so that the waste heat can be utilized; Special hot blast stove can also be set.

Ball making

The raw meal powder discharged from the mill is stored in the raw meal warehouse. Generally, 2~3 warehouses are set, which can be used for separate discharging, or multiple warehouses can be used for combined discharging.

The raw meal powder is fed into a small silo, and a screw metering device or a speed regulating belt scale device is set under the silo to measure the raw meal quantity. The raw meal enters the disc ball making machine. At the same time, the flowmeter can be used to measure the amount of water, which is sprayed into the disc ball making machine by the pipe pump. During the rotation of the ball making machine, it can be made into pellets of various particle sizes.

After the pellets are taken out of the tray, they are sent to the screening device by the belt conveyor. The qualified pellets enter the rotary kiln, and the oversized pellets return to the raw material grinding process.

According to the output of different kilns, different numbers of disc ball making machines can be equipped.

The ball making system has a high degree of automation and continuous process. After being equipped with bag type dust collector, the dust at the post can reach the standard and the working environment at the post can be purified.