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Method for repairing reactor titanizing layer in titanium sponge production process

A technology of production process and repair method, applied in the direction of coating, solid diffusion coating, metal material coating process, etc., can solve the problems of unable to produce sponge titanium synchronously, unable to repair titanium infiltration layer, etc., to save power consumption and The effect of labor consumption, cheap solvent and improving utilization rate

Active Publication Date: 2021-11-02
洛阳双瑞万基钛业有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

The above methods of titanium infiltration in the reactor are the first time to use the titanium infiltration method in the reactor, and none of them can be completed simultaneously with the production of sponge titanium, so the titanium infiltration layer to be repaired cannot be repaired during the use of the reactor

Method used

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  • Method for repairing reactor titanizing layer in titanium sponge production process

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the examples, but not as the basis for any limitation on the invention.

[0019] A method for repairing a titanium-infiltrated layer of a reactor during the production of sponge titanium comprises the following steps:

[0020] (1) Clean up the inside of the reactor to be repaired, use D40-D200 solvent oil: titanium powder = 2:1 to form a paste, use a brush to brush the parts of the reactor to be repaired, and the coating thickness is 0.4-0.8mm ;

[0021] (2) Assemble the painted reactor with a large cover in the preparation section, vacuumize the reactor through the Roots pump, and then flush it with argon to a slight positive pressure;

[0022] (3) After evacuating and flushing argon to pass the test, put the reactor into the furnace in the distillation stage as the cold end. The temperature of the reactor at the cold end is controlled at 100-550°C, and it is evacuated to 7.0×10 with a...

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Abstract

The invention relates to a method for repairing a reactor titanizing layer in a titanium sponge production process. The method comprises the following steps: mixing D40-D200 solvent oil with titanium powder, smearing a reactor titanizing layer to be repaired, evacuating a reactor, filling the reactor with argon, putting the reactor into a cold end of a distillation stage for use, placing the reactor into a hot end of a next reduction stage for use after operation at the cold end of the distillation stage is finished, and finishing the repair of the titanizing layer in the process. The method is combined with production, the reactor titanizing repair and production can be simultaneously performed, the utilization rate of the reactor is greatly improved, meanwhile, the power consumption of an independent titanizing process is reduced, and the furnace occupation condition of independent titanizing is avoided.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal smelting, and in particular relates to a method for repairing the titanium infiltration layer of a reactor in the process of producing sponge titanium. Background technique [0002] The steel reactor used in the production of sponge body is only treated with titanium infiltration when it is used for the first time during the period from being put into use to the scrapping of the reactor. Oxidation, deliquescence, and shedding of the titanized layer cause rust on the reactor wall. If the reactor is not subjected to titanized treatment again, the titanium sponge produced will be degraded due to excessive iron elements. Because liquid magnesium can dissolve iron in a large amount during the reduction stage, once the titanium infiltration layer is damaged, it will leak out of the substrate of the reactor plate, and the iron will enter the sponge titanium through reduction reaction and cannot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/12C22B9/02C23C10/30
CPCC22B34/1295C22B9/02C23C10/30
Inventor 李汉刘正红张盘龙郭磊郭辉张琪林邵智
Owner 洛阳双瑞万基钛业有限公司
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