Process for smelting low-silicon ferrotitanium by fusing titanium-containing blast furnace slag

• Main Authors: TANG XUEFENG, ZHANG JIE, ZHANG WEIWEI, KANG LEI, LYU CHUNFENG, LIAO XIANGWEI, SHANG DELI, KANG WEI, JIA JIXIANG
• Format: Patent
• Language: Chinese; English
• Published: 28.11.2017
• Subjects: ALLOYS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a process for smelting low-silicon ferrotitanium by fusing titanium-containing blast furnace slag. The process comprises the following steps: preparing slag, ferro-aluminium and calcium oxide in a mass ratio of 100 to 37.94 to (10-15); crushing ferroaluminum alloy, grinding the ferroaluminum alloy into powder with particles sizes which are more than or equal to 300 meshes, adding calcium oxide, mixing a calcium oxide mixture until the surface of the ferroaluminum alloy powder is uniformly coated; putting the titanium-containing blast furnace slag into a magnesia crucible, putting the magnesia crucible into a resistance furnace, carrying out furnace heating to 1450-1650 DEG C, and carrying out constant-temperature control; uniformly adding the mixed material into a fusion tank in a speed of 4.5g/min-5.5g/ml, and after the adding, maintaining the temperature for 5-10 minutes; taking out the material at 1450-1650 DEG C, carrying out water cooling, and drying; and separating slag and alloy