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A method for repairing the titanium infiltration layer of the reactor in the production process of sponge titanium

Active Publication Date: 2022-07-19
洛阳双瑞万基钛业有限公司
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  • Description
  • Claims
  • Application Information

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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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  • A method for repairing the titanium infiltration layer of the reactor in the production process of sponge titanium

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Embodiment Construction

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

[0019] A method for repairing a titanium infiltrating layer of a reactor in a titanium sponge production process, comprising the following steps:

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

[0021] (2) The brushed reactor is assembled with a large cover in the preparation section, and the reactor is evacuated and negatively charged by the Roots pump, and then flushed with argon to a slightly positive pressure;

[0022] (3) After the evacuation and argon flushing are qualified, put the reactor into the furnace of the distillation stage for use at the cold end. The temperature of the reactor at the cold end is controlled ...

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Abstract

The invention relates to a method for repairing a titanium infiltration layer of a reactor in the production process of sponge titanium. The method uses D40-D200 solvent oil and titanium powder mixed with titanium powder to smear the titanium infiltration layer of a reactor to be repaired, and then evacuates the reactor and flushes it with argon. It is then put into the cold end of the distillation stage for use. After the cold end of the distillation is completed, the reactor is put into the hot end of the next round of reduction stage for use, and the repair of the titanium infiltration layer is completed in the process. Combining the invention with production, the reactor titanium infiltration repair and production can be carried out at the same time, which greatly improves the utilization rate of the reactor, saves the power consumption of the separate titanium infiltration process, and avoids the furnace occupation of the separate titanium infiltration process.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal smelting, and in particular relates to a method for repairing a titanium infiltration layer of a reactor in the process of producing titanium sponge. Background technique [0002] The steel reactor used for the production of sponge is only infiltrated with titanium when it is put into use until the reactor is scrapped. Oxidation, deliquescence, and falling off of the titanium infiltration layer cause the reactor wall to rust. If the reactor is not subjected to titanium infiltration treatment again, the produced titanium sponge will be degraded due to excessive iron elements. Because liquid magnesium can greatly dissolve iron in the reduction stage, once the titanium infiltration layer is destroyed, it leaks out of the substrate of the reactor plate, and iron cannot be removed by entering the sponge titanium through the reduction reaction. Therefore, the integrity of the titanium infiltra...

Claims

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Application Information

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Patent Type & Authority Patents(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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