The Influence of Chamosite on Treatment Process of Red Mud

Abstract

There was examined material composition of red mud (RM) of Urals Aluminium Plant (UAP) in comparison with RM of Nikolayev Alumina Refinery (NAR). There was revealed that special feature of RM’s material composition from UAP is presence in its significant quantity (15-30 %) of chamosite. There was investigated the influence of mineral composition on end products of RM treatment process. There was demonstrated the influence of chamosite on iron content in end products, and inefficiency of magnetic dressing in comparison with gravity dressing. There was revealed the dependence of chamosite and hematite content on initial coarseness of RM. Chamosite is adversely effect on subsequent treatment process of RM as its contents only 18 per cents of total iron, and decrease quality of ferriferous concentrate. Furthermore, significant difference of UAP’s RM in comparison with NAR’s RM is superfine coarseness of given raw materials.