White Circle Oxides Develops Two-step Sintering Process

Hyderabad, May 21: | Updated: May 22 2003, 05:30am hrs
Claimed to be the first of its kind in the country, the White Circle Oxides Ltd (WCO) has developed a two-stage reaction sintering process to manufacture magnesium aluminate spinels, used in refractory brick-making in the country.

By adding spinel to the existing manufacturing process of magnesia carbon bricks, the quality of the brick will improve besides increasing its efficiency, Mr MV Ramana Rao, managing director WCO said. The innovative process has been developed jointly by WCO and IRC-I, an autonomous laboratory of the Department of Science and Technology. After patenting the process technology with the Indian Patent authority, the company is now thinking of applying for an international patent, Mr Rao said.

Spinel is a complex compound of magnesia and alumina with a chemical formula Mg Al2 O4, having desirable properties of aluminia and magnesia like high melting point, high thermal stock resistance, high resistance to corrosion and erosion and chemically inert.

WCO has already set up a 6,000 mt plant at Peddapuram in East Godavari district in Andhra Pradesh, with a project cost of Rs 26.20 crore funded by Technology Development Board, IDBI Venture Capital and State Bank of Indore. The company has commenced commercial production about four months ago, Mr Rao said.

The company is receiving export enquiries for the product as that particular rawmaterial is extensively used in Germany and The Netherlands.