The cyclone for alumina is aiming at the classification of alumina industry. In view of the harsh working environment of high temperature, high alkali and strong abrasion in alumina industry, Haiwang adopts wear-resistant rubber, high aluminum ceramics and wear-resistant polyurethane materials, and combines the latest production process, to develop and produce: bauxite grinding classifying cyclone, aluminium hydroxide crystal seed separating cyclone, red mud concentration, sand removal and iron separating cyclone. Haiwang alumina cyclone is the preferred equipment for alumina industry classification with the virtue of its material characteristics and mature processing technology.