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07/07/2011

CHINA STEEL TO IMPROVE BF SLAG PRODUCTION BY INSTALLING INBA SYSTEM

China Steel to Improve BF Slag Production by Installing INBA System

China Steel Corporation, Kaohsiung, Taiwan has awarded the Paul Wurth Group with an order for engineering and supply of two new slag granulation systems with INBA® dewatering technology for CSC’s Blast Furnace No. 4 at the Kaohsiung steel works.

The new systems will be commissioned in the beginning of 2013, along with the completely relined BF4 which will produce 3.0 million tons of hot metal annually. Each INBA plant will serve one of the two casthouses (with two tapholes each) and is designed for processing a maximum slag flow rate of 10 tons/min. The liquid slag is granulated by water jets as it falls into a granulation tank; the generated steam is captured by means of a condensation tower. This is the most advanced technology in terms of reducing the environmental impact from the granulation process.

CSC had experience with another slag granulation method during the first campaign of BF4. On the other hand, the operational results of the Paul Wurth INBA plants at CSC’s No.1-3 furnaces with, particularly, their high reliability, effective emission control and low operating and maintenance costs led CSC to decide for the INBA system. Thus, by 2013, all 6 blast furnaces in Taiwan will be using Paul Wurth’s proven granulation and dewatering technology for producing highly vitrified blast furnace slag for the cement and construction industry.

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