Abstract
Cia. Vale do Rio Doce-CVRD, from Brazil, is implementing its Titanium Project since 1972 for exploitation of its huge anatase ore deposits (500 million tons) in southeast region. After long and costly research work on geological and technological studies, CVRD started up in 1983 the operation of a Pilot Plant in order to evaluate this new raw material for titanium industry. The beneficiation process that was developed yields a high grade (90% TiO2) concentrate that is an alternative to rutile for chloride route TiO2 pigment industry.Pilot work was successfull so that now, in 1987, CVRD has started the engineering of a commercial anatase plant of 200, 000 tpy capacity to come on stream in 1990.The anatase ore deposit is of such complexity that other valuable components and by-products are being considered in the Project.Rare-earths, titaniferus magnetites for steel mills and petroleum drilling operations are the main by-products.New development programs are also being implemented by CVRD for better anatase industrial application, such molten salt chlorination for fines. Metal Titanium, based on this process, is another goal.
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