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钢包喷粉是七十年代发展起来的新技术、新工艺,目前世界上有40余台设备投入了工业生产。设备的主要类型有TN法(Thyssen Niederrhein)和SL法(Scandinavian Lancers)。使用的粉剂有Ca-Si、CaC_2、MgO+CaO、Ca(CN)_2、CaO等。TN法要求钢包内衬用白云石砌成,SL法对钢包内衬无要求(粘土砖、镁砖均可)。一般用氩气作为输送气体。经钢包喷粉处理,可使钢中S<0.002～0.005％,P<0.005%,O<0.0015％,消除MnS型夹杂,形成不易变形的钙铝尖晶石型夹杂物。从而能生产超低硫钢,低磷钢和Z向韧性优良的厚钢板等。钢包喷粉技术具有设备简单,投资少,操作费用低廉,灵活性大等优点,预计八十年代喷射冶金将得到更广泛的应用。
Ladle dusting is the development of the seventies new technology, new technology, the world has more than 40 sets of equipment into industrial production. The main types of equipment are TN method (Thyssen Niederrhein) and SL method (Scandinavian Lancers). Used powder Ca-Si, CaC_2, MgO + CaO, Ca (CN) _2, CaO and so on. The TN method requires the ladle to be lined with dolomite. The SL method has no requirements on the ladle lining (clay bricks and magnesia bricks can be used). Argon is generally used as the delivery gas. The ladle dusting treatment can make S <0.002-0.005%, P <0.005%, O <0.0015% in the steel and eliminate MnS type inclusions to form the easily deformed calcium aluminate spinel inclusions. Which can produce ultra-low sulfur steel, low phosphorus steel and Z to the excellent toughness of steel plate. Ladle dusting technology with simple equipment, low investment, low operating costs, flexibility and other advantages, is expected in the eighties jet metallurgy will be more widely used.