Posted on 29 Jul 2013
CHINA STEEL SUCCESSFULLY COMMISSIONED A NEW PAUL WURTH INBA SYSTEM
China Steel Corporation, Kaohsiung, Taiwan, successfully commissioned
on May 6, 2013 the first of two new slag granulation systems with INBA
dewatering technology for CSC’s Blast Furnace No. 4 at the Kaohsiung
steel works.
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 blast furnace 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 3.0 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 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.