摘要:
An apparatus for producing Ti by Ca reduction by the invention includes a reaction tank retaining a molten salt in which a molten salt CaCl2 is contained and Ca is dissolved, an electrolytic cell retaining a molten salt containing CaCl2, and a continuum body which is movably constructed while part of the continuum body is immersed in the molten salt either within the reaction tank or electrolytic cell. In the inventive method for producing Ti by Ca reduction, the molten salt in the electrolytic cell is electrolyzed to generate Ca on the cathode side which is transported to the reaction tank while deposited on and adheres to the continuum body, and TiCl4 is supplied to the reaction tank to generate Ti. The invention enables a feed rate of TiC14 as a raw material to be enhanced, and continuous production to be performed, while allowing Ca consumed in the TiCl4 reduction reaction to be replenished by electrolysis of CaCl2, which proves to have an economical advantage, thus becoming means for efficiently and economically producing high-purity metallic Ti to widely be applied.
摘要:
A method for production of metal by molten-salt electrolysis of the present invention is a method for production of metal by molten-salt electrolysis which is performed by filling a molten salt of calcium chloride in an electrolysis vessel having a anode and a cathode, one of the anode or cathode is arranged surrounding the other electrode, the cathode has at least one hole communicating the inner area surrounded by the cathode with the outer area, and the molten salt flows through the communicating holes from one area including the anode (the inner area or outer area) to the other area.
摘要:
A method for production of metal by molten-salt electrolysis is a method for production of metal by molten-salt electrolysis which is performed by filling molten salt of a metal chloride in an electrolysis vessel having an anode and a cathode, and a molten salt which reduces solubility of the metal in the molten salt is used.
摘要:
The present invention is a method for producing Ti or a Ti alloy through reduction of TiCl4 by Ca, which can produce the high-purity metallic Ti or high-purity Ti alloy. A molten salt containing CaCl2 and having Ca dissolved therein is held in a reactor vessel, and a metallic chloride containing TiCl4 is reacted with Ca in the molten salt to generate Ti particles or Ti alloy particles in a molten CaCl2 solution, which allows enhancement of a feed rate of TiCl4 which is of a raw material of Ti, and also allows a continuous operation. Therefore, the high-purity metallic Ti or the high-purity Ti alloy can economically be produced with high efficiency. Further, the method by the present invention eliminates the need of replenishment of expensive metallic Ca and of the operation for separately handling Ca which is highly reactive and difficult to handle.
摘要:
The invention is a method for producing Ti or Ti alloys through reduction of TiCl4 by Ca, which can produce high-purity Ti metals or Ti alloys. A molten salt containing CaCl2 and having Ca dissolved therein is held in a reactor cell, electrolysis is performed in the molten salt in the reactor cell, and particulate Ti or Ti alloys are generated in the molten salt by supplying a metallic chloride containing TiCl4 to the molten salt so as to react with Ca generated on a cathode electrode side by the electrolysis, allowing enhancement of a feed rate of TiCl4 as a raw material of Ti, and also a continuous operation. Further, the method by the invention eliminates the need of the separate handling of Ca, because a reducing reaction and an electrolytic reaction can simultaneously proceed in the reactor cell to replenish Ca, consumed in the reducing reaction, by the electrolytic reaction. Accordingly, the production method by the invention can be used as means for efficiently and economically producing high-purity Ti metals or Ti alloys.
摘要:
A method for producing Ti or Ti alloys through reduction by Ca, including: a reduction step of holding a molten salt, containing CaCl2 and having Ca dissolved therein, in a reactor vessel 1, and reacting a metallic chloride containing TiCl4 with Ca in said salt to generate particles of Ti or Ti alloys in said salt; and a separation step of separating particles of Ti or Ti alloys, generated in said salt, from said salt. An electrolysis step 8, in which CaCl2 discharged outside the reactor vessel 1 is electrolyzed into Ca and Cl2, and the generated Ca is used for the generation reaction of Ti or Ti alloys in the reactor vessel 1, is preferably added. In the electrolysis step 8, an alloy electrode made of a molten Ca alloy, if applied for a cathode, is effective in enhancing the electricity efficiency, and also can be effectively utilized as a carrier medium of Ca for raising a Ca concentration of molten salt. By this method, high-purity Ti metals can be efficiently and economically produced.
摘要:
A process for producing Ti, comprising a reduction step of reacting TiCl4 with Ca in a CaCl2-containing molten salt having the Ca dissolved therein to thereby form Ti particles, a separation step of separating the Ti particles formed in said molten salt from said molten salt and an electrolysis step of electrolyzing the molten salt so as to increase the Ca concentration, wherein the molten salt increased in Ca concentration in the electrolysis step is introduced into a regulating cell to thereby render the Ca concentration of the molten salt constant and thereafter the molten salt is used for the reduction of TiCl4 in the reduction step. In the present invention, the Ca concentration of the molten salt to be fed to the corresponding reduction vessel can be inhibited from fluctuating and, at the same time, can maintain high concentration levels. Further, a large volume of the molten salt can be treated continuously. Therefore, the reduction reaction of TiCl4 can be efficiently performed, and the process can be effectively utilized in the production of Ti by Ca reduction as a production process for realizing Ti production on an industrial scale.
摘要:
A mixed molten salt containing CaCl2 and NaCl is held in the reactor cell 1 at a temperature not more than 600° C. TiCl4 which is of a Ti raw material is introduced into the reactor cell 1 while Na is introduced into the reactor cell 1. Na introduced into the reactor cell 1 is replaced by Ca, Ca is dissolved in the molten salt, Ca reduces TiCl4 introduced into the reactor cell 1, and thereby Ti particles are generated. The generated Ti particles are introduced to a separation cell 2 along with the molten salt, and the Ti particles and Na are separated from the molten salt. The residual molten salt is introduced to an electrolytic cell 3 to generate Na by high-temperature electrolysis at the temperature more than 600° C. The generated Na is returned to the reactor cell 1 to replenish Na consumed in the reactor cell 1. The highly reactive Ca is not directly handled, and Na which is easy to handle is used in a circulating manner. Therefore, the Ti or Ti alloy can economically be produced by Ca reduction.
摘要:
The present invention relates to a method for producing a metal by a direct oxide reduction process with Ca. A CaCl2-based molten salt containing Ca is held in a reduction chamber 1, a metal oxide is introduced into the molten salt in the reduction chamber 1, and the metal oxide is reduced with the Ca in the molten salt to form said metal. The metal formed in the molten salt is separated from the molten salt in a separation means 2, and the molten salt deprived of the metal is introduced into a chlorination chamber 7 and subjected to chlorination treatment with chlorine gas to eliminate the byproduct CaO in the molten salt. The molten salt after chlorination treatment is introduced into an electrolysis chamber 8 and electrolyzed for the formation of Ca and chlorine from CaCl2, and the thus-formed Ca or Ca-containing molten salt is transferred from the electrolysis chamber 8 to the reduction chamber 1. The chlorine obtained in the electrolysis chamber 8 is used in the chlorination chamber 7. Thus, the present invention provides a metal production method and an apparatus wherein high levels of productivity are obtained and the product metal can be inhibited from carbon contamination due to CaO, without any generation of CO2 from the production process, while their being based on the direct oxide reduction process comprising the step of reducing a metal oxide with Ca.
摘要:
The present invention is a method for producing Ti or a Ti alloy through reduction of TiCl4 by Ca, which can produce the high-purity metallic Ti or high-purity Ti alloy. A molten salt containing CaCl2 and having Ca dissolved therein is held in a reactor vessel, and a metallic chloride containing TiCl4 is reacted with Ca in the molten salt to generate Ti particles or Ti alloy particles in a molten CaCl2 solution, which allows enhancement of a feed rate of TiCl4 which is of a raw material of Ti, and also allows a continuous operation. Therefore, the high-purity metallic Ti or the high-purity Ti alloy can economically be produced with high efficiency. Further, the method by the present invention eliminates the need of replenishment of expensive metallic Ca and of the operation for separately handling Ca which is highly reactive and difficult to handle.