DEVELOPMENT OF QUALITY ALUMINA AND HYDRATE BASED PRODUCTS IN HUNGARY

Baksa, G., Szalay, G. and Siklosi, P.

HUNGALU AJKA WORKS is a member of the HUNGARIAN ALUMINIUM CORPORATION. Two more or less independent alumina plants operate within the WORKS, having close contact with each other. The measures taken for improving the modification of the alumina manufacturing process according to the demand of the alumina market are described by the authors.

They give account of the development of a fine grained alumina hydrate product family. Certain products of this family are produced in the air-jet-mill, other ones by precipitation with certain additives, the finest one by the decomposition of aluminium gallame.

Synthetic zeolite products have also been developed in the plant on the basis of spent liquor of the Bayer process, emphasizing the competitive advantages of manufacturing these products in an alumina plant.