We are offering high performance ferrite powder production line, according to the production features of high performance ferrite, and combing with foreign advanced technology, we develop and design this automatic rotary kiln for producing high performance permanent pre-sintered ferrite powder. Comparing with other domestic made pre-sintering equipment, it has the features of high automation, small areas occupied, no floating dust. the rotary kiln consist of four parts: 1)material feeding device. By this device, feeding material at manual control quantity can be made, and the quantity may be continuously adjusted according to the requirement of production. 2)the kiln and transmission device. The kiln is divided into three function sections by the building and pouring of fire-resistant material. 3)sintering and temperature and pressure control device. By this device, the temperature, pressure and atmosphere will meet the requirement of ferrite pre-sintering actions, and they will be adjusted automatically. The fuel includes heavy oil, diesel and gas, etc. 4)slow cooling device. It makes the high temperature pre-sintered material cooled in a short time.