Production technology of titanium sponge

Na reduction method: four titanium chloride is mainly used for the production of sponge titanium, titanium dioxide and titanium trichloride. Many of its preparation method, mainly in boiling chloride fused salt chlorination furnace, and 3 methods of chloride. Boiling chlorination is the main method of the current production of four titanium chloride (China, Japan, America use), followed by the molten salt chlorination (the CIS countries), and the shaft chloride has been eliminated. Boiling chlorination is generally low in calcium and magnesium content of high grade titanium rich material as raw material, and molten salt chlorination could use the materials containing high contents of calcium and magnesium. Boiling chlorination: boiling chlorination is the use of fine particles of titanium rich material and solid carbonaceous reducing agent (petroleum coke),‪#‎Aerospace_investment_castings‬ at high temperature, chlorine flow under the action of a chlorination reaction of fluidization state, and preparation method of four titanium chloride. This method has accelerated the gas-solid interphase mass transfer and heat transfer process, strengthen the production characteristics. The boiling chloride using raw materials with high titanium slag, rutile, rutile. China's Fushun titanium factory and Zunyi titanium factory new boiling chlorination furnace diameters of Φ 1.4 m and phi 2.4 m, with no sieve chlorination technology unique, Zunyi titanium plant designed daily crude four titanium chloride 70 t. Molten salt chlorination: molten salt chlorination is milled titanium slag and rutile and petroleum coke, suspended in a molten salt (mainly composed of KCl, NaCl, MgCl2 and CaCl2) in the medium, and the chlorine gas, and preparation method of four titanium chloride. Waste electrolyte in general can also use the electrolytic magnesium, under the condition of 973K~1073K filled with chlorine,#‎Titanium_Welded_Tubes‬ the chlorination reaction velocity by the melt properties, composition, different reducing agent, raw material properties, chlorination temperature, chlorine concentration and inlet velocity, melt height, carbon content and other factors. Molten salt best four titanium chloride production in the cis form as shown in table 4. Molten salt chlorination process is developed in the former Soviet Union in twentieth Century 60, method for production of four titanium chloride, the raw material characteristics of this method is applicable not only to the former Soviet Union (titanium slag containing CaO+MgO about 6%), the furnace production capacity of 20 t/m2 ~25 t/m2 four titanium chloride, molten salt section area of 6m2. Large molten salt Nissan four titanium chloride was 120 t~150 T, formerly the rectangular furnace, the furnace for the round, round molten salt chlorination furnace size of Φ 5 m × 8.5 m, inner diameter is 2.76 m, the rectangle is 4.5 m × 3.5 m × 8.5 M. No dead angle circular furnace, furnace body strength increase, 3 years 1 times than the rectangular furnace overhaul, nearly 1 times the service life extension. Molten salt chlorination can use a variety of rich titanium material, in addition to titanium slag containing calcium magnesium, is now widely used by red ilmenite (Fe2O3 3TiO2) Ti slag smelting (TiO2 87%~91%), can also use the rutile.