Evaluation of a process that uses phosphate additions to upgrade titania slag

From: Metallurgical and Materials Transactions | Date: August 1, 1999| Author: | Copyright information

Thermal reduction is the oldest ilmenite concentration process and involves smelting ore in an electric arc furnace to produce pig iron and a TiO2-rich slag.[l] The resulting TiO2-rich slag is a suitable feed material for the chloride process if the ilmenite feed material is low in alkaline earth impurities. While the thermal reduction process is successful in upgrading ilmenite ore, some practical difficulties remain:

(1 ) the operating temperature during reduction is very high (in excess of 1600degC) as a result of the absence of flux additions;

(2) the quality of the slag product is ...

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