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Preparation method of composite anode during electrolytic extraction of titanium metal

A composite anode and electrolytic extraction technology, applied in the direction of electrodes, electrolytic process, electrolytic components, etc., can solve the problems of large amount of reducing agent and high energy consumption, and achieve the effects of reducing production costs, accelerating anode reaction, and reducing consumption

Active Publication Date: 2017-10-24
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Problems solved by technology

This method has similar advantages and disadvantages to the above-mentioned Chinese invention patents. Similarly, thermal reduction under high temperature and vacuum is required to prepare composite anodes, so the energy consumption of this method is still relatively high.
[0007] In the thermal reduction step of the above two patents, C in the titanium-containing material overflows in the form of CO, which leads to a large amount of reducing agent

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  • Preparation method of composite anode during electrolytic extraction of titanium metal

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preparation example Construction

[0019] The preparation method of the composite anode during the electrolytic extraction of metal titanium of the present invention comprises the following steps:

[0020] a. Raw material preparation: measure the titanium content M in the titanium liquid obtained in the process of producing titanium dioxide by the sulfuric acid method;

[0021] b. Mixing of composite anode materials: add 12%M to 20%M reducing agent to the titanium solution obtained in step a, then add 1%M to 5%M binder, and mix evenly to obtain a mixed material; wherein, Reducing agent + binder = 13%M ~ 23%M;

[0022] c. Preparation of composite anode: Press the mixed material obtained in step b under a pressure of 0.5-1.5MPa, dry at 100-120°C for 3-5 hours, and calcinate at 300-350°C for 2 ~4h, is that the crystal water is removed from the material at high temperature to obtain a titanium-containing composite anode;

[0023] d. Production of titanium metal: the titanium-containing composite anode obtained in...

Embodiment 1

[0037] Step 1, anode preparation

[0038] Raw materials: titanium liquid, carbon powder, asphalt;

[0039] According to a certain volume of titanium liquid, according to the determined hydrolysis rate, calculate the Ti content after hydrolysis, add 17% carbon powder and 3% pitch according to the mass ratio, and mix evenly. Rinse according to the existing steps of sulfuric acid titanium dioxide to obtain a titanium-containing mixture. According to 10kg / cm 2 It is formed under high pressure, and then dried at 100-120°C for 3-5 hours. After the free water is released from the formed material block, it is calcined at 300-350°C for 2-4 hours. Composite anode, the obtained sample block falls freely at a height of 1 meter, and the sample block remains intact, which can meet the requirements of the next step of electrolysis. Analysis of this material by means of X-ray diffraction shows that it is still C and TiO 2 mixture.

[0040] Step 2, molten salt electrolysis

[0041] The blo...

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Abstract

The invention relates to a method for producing metal by molten salt electrolytic metallurgy, in particular to a method for extracting metal titanium by molten salt electrolysis, and in particular to a method for preparing a composite anode when electrolytically extracting metal titanium. The method of the present invention comprises the following steps: a, raw material preparation: measuring the titanium content M in the titanium liquid obtained in the process of producing titanium white by the sulfuric acid method; b, mixing composite anode materials: adding a reducing agent and viscose to the titanium liquid obtained in step a binder, rinsing to obtain a uniformly mixed mixed material; c, preparation of composite anode: press the mixed material under a pressure of 0.5 to 1.5 MPa, dry, and calcinate to obtain a titanium-containing composite anode; d, preparation of metal titanium: The titanium-containing composite anode is used as the battery anode, carbon steel is used as the cathode, and metal titanium is obtained on the battery cathode according to the molten salt electrolysis method. The method for preparing the anode material is simple, the energy consumption is low, and the reaction rate of the anode material is fast.

Description

technical field [0001] The invention relates to a method for producing metal by molten salt electrolytic metallurgy, in particular to a method for extracting metal titanium by molten salt electrolysis, and in particular to a method for preparing a composite anode when electrolytically extracting metal titanium. Background technique [0002] Titanium and its alloys are widely used in modern aviation, rocket and missile industry, aerospace technology, guns and ships, biomedical materials and chemical equipment due to their high melting point, light specific gravity, high strength and strong corrosion resistance. [0003] At present, the only titanium production method used in industrial production in the world is the Kroll method, that is, the magnesium reduction method. The sponge titanium produced can be purified by vacuum consumable electrode remelting or electron beam melting. The whole production process of the Kroll method includes four main parts: electrolysis of magnes...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/28C25C7/02
Inventor 穆宏波穆天柱邓斌彭卫星赵三超陈兵闫蓓蕾
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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