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China Steel Successfully Commissions New Paul Wurth INBA System

07/10/2013 - China Steel Corp. (CSC) has successfully commissioned the first of two new slag granulation systems with INBA® dewatering technology for its blast furnace no. 4 at the Kaohsiung steel works in Taiwan.

In 2011, the Paul Wurth Group was awarded the contract for the engineering and supply of two new systems with the aim of improving the customer’s BF slag production method. The construction of the second system will begin in September this year and the plant will start up during the first quarter of 2014, along with the completely relined BF4 which will produce 3 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 per 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 a different slag granulation and dewatering 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, from now on, all 6 blast furnaces in Taiwan are using Paul Wurth’s proven granulation and dewatering technology for producing highly vitrified blast furnace slag for the cement and construction industry.

Headquartered in Luxembourg since its creation in 1870, the engineering company Paul Wurth is a leading technology provider and supplier of complete plants and facilities for the primary stage of integrated steelmaking. Besides its activities for the iron and steel industry, Paul Wurth is also specialized in the management and coordination of large civil construction and infrastructure projects. With more than 1500 employees, Paul Wurth is active worldwide, operating entities and affiliated companies in the main iron and steelmaking regions of the world.