Alumina rotary kiln

Alumina rotary kiln

Alumina rotary kiln is used for calcination of materials at 950℃-1700℃ in the process of preparing alumina by Bayer method, alkali lime sintering method and Bayer-sintering method, so as to achieve the physical and chemical changes required in the process such as dehydration, crystal transformation and pyrolysis.

Raw materials: bauxite, aluminum hydroxide, crude aluminum oxide, etc

Fuel: natural gas, gas, coal, etc

Application: Mainly used in metal aluminum smelting, refractory materials, ceramics and other fields of alumina raw materials roasting.

Alumina rotary kiln product introduction

Alumina is widely used in electrolytic aluminum, ceramics, medicine, electronics, machinery and other industries, and the market demand for alumina still has a large room for growth. Our company's alumina rotary kiln is a kind of diameter rotary kiln developed by technical personnel on the basis of existing industrial alumina production practice after years of research, which has the characteristics of energy saving, easy operation and stable operation.

Outstanding advantage

1, rotary kiln transmission using frequency conversion speed regulation, high efficiency, low power consumption;

2, low fuel energy consumption per unit product, negative pressure operation, small dust pollution;

3, strong adaptability, can be used for Bayer, alkali lime sintering and a variety of mixed production processes;

4, PLC remote centralized control, easy to operate and adjust, safe and stable.

Working principle

The alumina hydroxide or bauxite ingredients are fed into the kiln by the kiln tail. Due to the tilt and slow rotation of the cylinder, the material rolls along the circumference and moves axially from the kiln tail (high end) to the kiln head (low end). Fuel from the kiln head (low-end) through the burner into the kiln for combustion, heat to radiation, convection, conduction and other ways to transfer to the material, the material in the process of moving, a variety of physical changes and chemical reactions, to meet the technical indicators required by the production process, and finally discharged from the kiln head, into the cooling machine.

Technical parameter