A kind of electrode paste repair material and its preparation method and application method

Abstract

The invention discloses a preparation method an electrode paste repairing material, and a use method of the electrode paste repairing material. The electrode paste repairing material is used for repairing the furnace lining of an electric furnace, and is made by using 85-92 parts by weight of an electrode paste, 5-10 parts by weight of an adhesive and 3-5 parts by weight of an additive. The small electric furnace lining repairing method using the electrode paste repairing material is very different from a traditional magnesium spray material repairing method, and the electrode paste repairing material is prepared by mixing the electrode paste with different granularities with the appropriate adhesive and the additive, and uniformly stirring. When the electrode paste repairing material is used, the granularity of the repairing material can be adjusted according to the size and the depth of a placed to repaired; and an appropriate adhesive can be selected according to the difference of products smelted in the small electric furnace. The electrode paste repairing material is directly added to the place to be repaired by a tool after the model of the electrode paste repairing material is well selected through observation. Compared with a wet spray repairing method, the method using the electrode paste repairing material to repair the small electric furnace has the advantages of simple operation, long hanging time and fast solidification.

Description

technical field [0001] The invention relates to a steelmaking furnace lining gunning repair technology, in particular to an electrode paste repair material and its preparation method and use method. Background technique [0002] Repairing and maintaining the furnace is an important measure to prolong the life of the furnace lining and reduce the consumption of refractory materials. The most frequently used repair measure is to repair the furnace lining. In the middle and late stages of the furnace lining use, regular or irregular repairs and maintenance are carried out on the partial melting parts of the furnace lining, which can effectively prolong the life of the furnace lining. Gunning includes dry gunning, semi-dry gunning and wet jetting. Magnesium gunning technology is widely used in converters in steel mills, and is also favored by users. However, this gunning material has certain limitations when repairing the inner lining of small electric furnaces. In recent year...

AI Technical Summary

Problems solved by technology

Magnesium gunning technology is widely used in converters in steel mills, and is also favored by users, but this gunning material has certain limitations when repairing the inner lining of small electric furnaces

In recent years, since the small electric furnace is a multi-functional product integrating slagging, deoxidation, desulfurization and dephosphorization, the small electric furnace has been favored by steelmaking enterprises, the market demand is large, and it has been widely used in metallurgical furnace charge enterprises. However, during the production process, the lining of the small electric furnace is severely eroded, and the consumption of refractory materials is large. With the increasingly fierce competition, metallurgical furnace charge enterprises are facing the problems of small electric furnace furnace life, small production capacity, and high energy consumption. Therefore, it is imminent to solve the problem of increasing the service life of the electric furnace to maximize the profit of the enterprise

The furnace age of the electric furnace and the raw materials, refractory materials, and operating processes during smelting cause different degrees of erosion on different positions of the furnace lining, so that the furnace lining cannot be consumed synchronously and will be repaired offline, which also brings a lot of inconvenience to metallurgical furnace charge enterprises.

The use of magnesia gunning materials requires the use of special equipment to bring cost increases to metallurgical furnace charge enterprises, the smelting temperature of small electric furnaces is not high, and the gunning and solidification of magnesia gunning materials is slow, and the lining of small electric furnaces is easy to stick to slag. Short feeding time and large rebound

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