What is the principle and chemical formula of titanium production by FFC in Cambridge?

FFC Cambridge process has the advantages of simple process, less pollution and continuous production. This is a new metallurgical process with green, low carbon and short process. Its technical core is to electrolyze with solid oxide as cathode at a temperature lower than metal melting point and molten salt decomposition voltage, that is, to electrolyze with solid oxide as cathode and graphite (or inert material) as anode in CaCl2 molten salt at a temperature lower than metal melting point and molten salt decomposition voltage. Metal oxide is reduced to metal or alloy, and oxygen enters molten salt in ionized form and migrates to anode discharge to generate gas (CO, CO2 or O2). The specific process flow is as follows: firstly, TiO2 powder is molded by die casting or casting, and then sintered, connected or wrapped with a high-temperature resistant metal current collector as a cathode and graphite as an anode, and electrolyzed in a CaCl2 molten salt system at 850-950℃. In the process of electrolysis, the oxygen in the solid TiO2 _ 2 cathode ionizes and removes the oxide, and the oxide reaches the anode through CaCl2 _ 2 molten salt to discharge, producing O2 (inert anode) or CO and CO2 gas (graphite anode), and the cathode forms metallic titanium. Figure 1 is a schematic diagram of the process flow of FFC method, and its basic reaction is as follows.

Cathode: TiO 2+4e = Ti+2O2-( 1)

Anode (inert): 2O2-= O2 (g) +4e (2)

Graphite anode: O2-+c = co (g)+2e (3)

2O2-+C =CO2 (g) +4e (4)