A reduction furnace oxygen lance device

Abstract

The invention provides a reduction furnace oxygen lance device. The reduction furnace oxygen lance device comprises a lance body and a lance brick. A through hole is formed in the center axis of the lance brick. An air flow distributor is arranged at the front end of the interior of the through hole. A first cooling channel and a second cooling channel are formed in the lance brick. The lance body comprises a central tube, a first sleeve and a second sleeve. The central tube, the first sleeve and the second sleeve are coaxial. The central tube is sleeved with the first sleeve. The first sleeve is sleeved with the second sleeve. The service life of the reduction furnace oxygen lance device can be prolonged from seven days in the prior art to about sixty days, the production cost is greatly lowered, and resources are saved.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to an oxygen lance device for a reduction furnace. Background technique [0002] In the production practice of lead smelting, the reduction furnace is the main equipment for the reduction reaction of high lead slag in the process of direct smelting lead. It can use high lead slag to carry out the reduction directly in the molten state, so compared with the traditional blast furnace, it has the advantages of improving the on-site operating environment and reducing energy consumption. Consumption and other advantages. However, during the operation of the reduction furnace, the oxygen lance of the reduction furnace is burned by high temperature, slag erosion and chemical corrosion, etc., resulting in a short life of the oxygen lance, generally about 7 days, resulting in frequent replacement of the lance, which has an adverse impact on production. Most of the current technology ...

AI Technical Summary

Problems solved by technology

However, during the operation of the reduction furnace, the oxygen lance of the reduction furnace is burned by high temperature, slag erosion and chemical corrosion, etc., resulting in a short life of the oxygen lance, generally about 7 days, resulting in frequent replacement of the lance, which has a negative impact on production

Most of the current technology is to improve the structure of the oxygen lance body, which has a complicated structure. The patent CN20235121111U discloses a water cooling device for the oxygen lance of the bottom blowing lead smelting furnace, which uses softened water as the cooling medium to reduce the temperature of the oxygen lance to protect the oxygen The purpose of the gun, but the effect is not significant, still not ideal

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