Seamless Pipe Sintering Layered Granulation Technology

For sintering, granulation is quite critical, the common granulation methods are outside rolling coke granulation and layered granulation two schools. The former is based on the fine high-grade hematite as the main iron ore raw materials, the latter is based on low-grade limonite and high-phosphorus iron ore as raw material. Increasing scarcity based on high grade hematite resources. Therefore, layered granulation technology has received more attention.

The main process of the seamless pipe stratified granulation is as follows: firstly, the high-phosphorous ore or limonite is granulated in a high-speed mixing mixer, then fed into a cylinder mixer and mixed with hematite for secondary granulation, and finally with limestone and coke powder coating granulation. After the stratified granulation process caused by the particle structure is that the porous iron ore distribution in the center of the particle, and dense iron ore will limestone and porous iron ore isolated as the intermediate transition layer.

During the sintering granulation process, the mixed limestone ratio, bed height and granulation humidity remain unchanged. In order to avoid worsening the permeability of the sinter layer, the coke powder particle size

A worker from a steel pipe company, which is located in China.