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Technology of Bell-less Top
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The BT type BF bell-less top was firstly used in No.1 blast furnace (1513m3) of Baotou Iron and Steel Co. in 1985. Since then the BT type bell-less top technology has been improved for many times over 20 years and seven national patents for invention and utility models have been awarded. It becomes preferable equipment for newly-built blast furnaces, which have been used for blast furnaces ranging from 450m3to 3200m3.The patented equipment is advanced, practical and reliable, which is not only widely used in China, but also exported to the countries like India, Vietnam, etc.


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