New integrated method to recover the TiO2 component and prepare glass-ceramics from molten titanium-bearing blast furnace slag

Experimental Study on the Phase Relations of the SiO2-MgO-TiO2 System in Air at 1500°C

“…With the steady growth in the generation of blast furnace slags from vanadium-titanium magnetite ores, the recovery of titania from industrial titaniabearing slags containing 22-25 wt.% TiO 2 1-3 is attracting increasing attention. [3][4][5][6][7][8][9][10][11][12][13][14][15] Over the past decades, both hydrometallurgical and pyrometallurgical methods [15][16][17][18][19][20][21][22][23][24] for processing titania-bearing slags have been applied and investigated intensively. Recently, a selective crystallization method and separation of a titania-enriched phase has also been proposed [25][26][27] to collect titania into a certain phase.…”

An approach to prepare high-purity TiSi2 for clean utilization of Ti-bearing blast furnace slag

“…2, the liquid Si-Ti solvents can be written as "liquid TiSi 2 + Si". Assuming the chemical potential of impurity element, M, in solid TiSi 2 is equal to that in liquid TiSi 2 + Si in the equilibrium state, as shown in eqn ( 4)-( 6), the segregation ratio K M between solid TiSi 2 and liquid TiSi 2 + Si can be expressed as eqn (7).…”

“…4 Many methods have been proposed for the clean utilization of Ti-bearing blast furnace slag, which include two routes: non-Ti extraction and Ti extraction. In non-Ti extraction routes, Ti-bearing blast furnace slag can be used as a photocatalytic degradation material, 5 compound fertilizer, 6 foam glass-ceramic, 7 and building materials (concrete 8 and sintered slag bricks 9 ); however, the most valuable element in Ti-bearing blast furnace slag, Ti, is not utilized effectively, and much of it is wasted; therefore, to make better use of Ti, the extraction of Ti from Ti-bearing blast furnace slag has been investigated. Hydrometallurgical treatment methods are a candidate approach.…”

SINTERING MECHANISM, STRUCTURE AND CRYSTALLISATION OF CaO-MgO-Al₂O₃-SiO₂GLASS-CERAMICS FROM BLAST FURNACE SLAG

“…In recent years, the preparation of glass-ceramics has been considered as an effective way to recover BFS [3,4,5]. In the process of preparing glass-ceramics with BFS, some other oxides were added to adjust the preparation and properties of the glass-ceramics [6,7,8].…”