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Method for producing metal material by composite compound

A technology for metal materials and compounds, applied in the field of preparing metal materials from composite compounds, can solve the problems of reduced mass transfer efficiency, increased energy consumption, low electrolysis efficiency and low current efficiency, and achieves improved current efficiency, reduced energy consumption, and simple process. Effect

Inactive Publication Date: 2009-12-16
WUHAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, the cation M in the molten salt during the cathodic reduction process 3 It will combine with the cathode or cathode reduction products in the cathode to block the ion migration channel and reduce the mass transfer efficiency, resulting in lower electrolysis efficiency and current efficiency, and increased energy consumption

Method used

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  • Method for producing metal material by composite compound
  • Method for producing metal material by composite compound

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Take Ca(OH) in equimolar ratio 2 and TiO 2 , add an appropriate amount of distilled water, and use a planetary ball mill to mill for 2-5 hours at a speed of 200-300 rpm to make it fully mixed. After drying the homogeneous slurry mixture, take 2-3g of powder and press it into tablets with a pressure of 2-10MPa. Sinter the pellet at 900-1200°C for 2-10h to obtain porous CaTiO 3 (particle size 0.5-3μm, see attached figure 1 ). CaCl at 850-950°C 2 In the molten salt, argon is used as the protective gas, and CaTiO is wrapped with Mo wire or Mo net. 3 Press the tablet as a composite cathode, use graphite as an anode, apply a voltage of 3.0V, electrolyze for 6 hours, take out the product after cooling, and wash it with water to obtain metal Ti (particle size 2-10 μm, see attached figure 2 ). Electrolysis of TiO under the same conditions 2 It takes more than 10 hours to get the same result.

Embodiment 2

[0033] Take Panzhihua Iron and Steel blast furnace slag (mainly containing Ca, Mg, Si, Ti, Fe, S, O and other elements) or titanium concentrate (mainly containing Ca, Mg, Si, Ti, V, Fe, S, O and other elements) 1.5 - 2.0g, grind it to a particle size of about 0.5-10μm, press into a tablet with 2-10MPa pressure, and then sinter at 800-1000°C for 2h. CaCl at 850-950°C 2 In the molten salt, use argon as the protective gas, wrap blast furnace slag pellets with Mo wire or Mo mesh as composite cathode, use graphite rod as anode, apply 3.0-3.2V voltage, electrolyze for 6-15h, take out the product after cooling and wash with water , TiFeSi alloy powder (particle size about 10-20 μm) can be obtained.

Embodiment 3

[0035] Take fine spar (CaNaTa 2 o 6 (OH)) 100g, put it in a planetary ball mill, grind it through a 300 mesh sieve, take a 2g sample and press it with 6MPa, sinter it at 900°C for 2h, compound it with molybdenum mesh as the cathode, and use graphite as the anode, at 700°C CaCl 2 - Applying 2.9-3.3V voltage to electrolyze for 6 hours in NaCl molten salt, taking out the sample after cooling, and washing with water and dilute acid to obtain tantalum powder with a particle size of several hundred nanometers.

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Abstract

This invention relates to a method of preparing metal material using complex compounds. Electrolysis is carried out in the electrolyte under the protection of inert gas or air containing M3Y with composite compounds of M1M2X combine with the collector as a cathode and carbon, metal or conductive ceramic as anode. Controlling electrolysis voltage, so that M2 reduction reaction is the dominated reaction, and M1 and X is partly or all dissolved in the electrolyte as electrolysis going on. When M1 is H, M1 can be reduced to gas leaving away the cathode. At the end of electrolys, M2 alone or with part of the M1 and X-stay is left on the cathode, which is the corresponding metal. Since M1X part or all leave away cathode in this invention during electrolysis process, the reactivity and ability of cathode is enhanced, the reaction rate and the current efficiency are effectively improved and energy consumption is reduced.

Description

technical field [0001] The invention relates to a method for preparing metal materials from composite compounds, and belongs to the field of electrometallurgy, new materials and new preparation technologies. Background of the invention [0002] Metals, semi-metals, alloys, intermetallic compounds and other materials are currently mainly produced and prepared by high-temperature thermal reduction and high-temperature smelting of carbon or metals. This method is used in the smelting of steel, titanium, niobium, tantalum and some alloy materials. Industrial application, but this kind of method has high reaction temperature, high requirements on equipment and devices, and huge energy consumption and serious pollution. With the increasing attention to energy and environmental issues, it is very urgent to develop new technologies with low energy consumption and less pollution . [0003] Some metals, semi-metals, alloys, intermetallic compounds and other materials can also be prep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C5/00C25C1/00C25C3/00
CPCY02P10/20
Inventor 陈政汪的华胡晓宏蒋凯金先波
Owner WUHAN UNIV
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