Multifunctional synthesized slag for refining furnace

• Main Authors: DONGSHENG SU, JUN SU, JIALAN SU
• Format: Patent
• Language: English
• Published: 03.03.1999
• Edition: 6
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

The multifunction synthetic slag for refining furnace comprises the following ingredients (wt%): lime 55-65%. limestone 3-10%, fluorite 3-10%, caustic soda 3-9%, raw dolomite 4-8%, aluminium grain with diameter of 3-5 mm 3-5%, silicon carbide (silicon content is 45-55%) 5-10%, silicon-calcium alloy 2-3% and aluminium dust (aluminium content is 10-15%) 1-3%. Said invented product posseses several functions of desulphurization, deoxidation and foaming and smothering arc. As compared with existent synthetic slag, its desulphurization capacity is raised by above 30%, refining time can be shortened by above 15 min, and can be up to below 30 min, and can make ladle life prolonged by 8-10 times.