A Comparison of the Leading Hot Metal Desulphurization Methods
The current market demands desulphurized steel.Steelmakers worldwide agree that the most efficient and cost effective solution in BOF steelmaking is to desulphurize the hot metal between the blast furnace and converter.Various methods are currently in use for hot metal desulphurization.Among these methods the Kanbara Reactor(KR)process(using only lime as a reagent),the Magnesium mono-injection process(using only magnesium as a reagent; also known as the Ukraina Desmag process)and the co-injection process(using magnesium and lime/CaC2 as reagents)are worldwide the most popular.These three hot metal desulphurization methods are compared based on metallurgy,efficiency,costs and overall performance.Both available data from literature and experience from Danieli Corus engineers is used for this study.The KR process is able to reach low sulphur concentrations(> 10ppm)in hot metal and has lower reagent costs.However,due to higher Fe-loss and heavy wear the KR process has the highest operational costs.The Magnesium mono-injection process is very fast due to the use of the reactive magnesium as reagent.Major problems with resulphurization(sulphur levels below 50ppm cannot be reached)and the violence of the process made that this process(which originates from the former USSR)could never get a firm foothold in the western steel industry.The co-injection process with magnesium and lime proves to be able to combine the best of both worlds.It can reach low sulphur concentrations and desulphurize fast.Co-injection is also the most flexible cost effective method in the market.Therefore this process is still viewed as the standard practice in the world of BOF steelmaking.
BOF steelmaking hot metal desulphurization co-injection Kanbara Reactor magnesium mono-injection Ukraina Desmag process
Frank SCHRAMA Bart van den BERG Guido van HATTUM
Danieli Corus,Velsen-Noord,the Netherlands
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
61-66
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）