Automatic blowing and spraying device for ferrovanadium refining

Abstract

The invention discloses an automatic blowing and spraying device for ferrovanadium refining and belongs to the field of iron and steel smelting equipment. The automatic blowing and spraying device forferrovanadium refining comprises a spraying and blowing tank and a spray gun which are connected through a conveying pipeline; the spraying and blowing tank is externally connected to a high-pressureinert gas source through a high-pressure pipe; the spray gun is positioned at an opening at the upper part of a smelting furnace; the upper end of the spray gun is mounted on a rotating device and the lower end of the spray gun is deep into the smelting furnace; in addition, the automatic blowing and spraying device for ferrovanadium refining further comprises a control module; and the control module automatically controls the work of the high-pressure inert gas source, the spray gun and the rotating device. A reducing agent is automatically sprayed and blown into molten slag through the blowing and spraying device, feeding is continuous and uniform and wide in range, so that vanadium oxide in the furnace is subjected to secondary reduction, the vanadium content of the slag is reduced andthe recovery rate of the vanadium is improved; furthermore, part of high-pressure insert gas is carried with the reducing agent sprayed into the smelting furnace and flowing of the molten slag is promoted by continuously stirring the molten slag, so that separation of ferrovanadium alloy and the slag is further promoted and alloy drop settlement is promoted.

Description

technical field [0001] The invention relates to the field of iron and steel smelting equipment, in particular to an automatic blowing device for ferrovanadium refining. Background technique [0002] At present, the main method of smelting high-vanadium ferro-vanadium is the electroluminothermic method. After the aluminothermic reaction, there are still about 3%-5% residual vanadium in the slag solution. After the thermal reaction, the slag solution is blown and refined to further reduce the vanadium oxide in the hot slag. In the refining process, whether the injection volume, injection time, injection range and the depth of the lance inserted into the slag can be accurately controlled in strict accordance with the requirements of the process technology is the embodiment of the injection effect. [0003] In the actual production process, in order to reduce the residual vanadium in the slag, an excessive amount of aluminum is usually added, which will result in high aluminum ...

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Problems solved by technology

[0003] In the actual production process, in order to reduce the residual vanadium in the slag, an excessive amount of aluminum is usually added, which will result in high aluminum in the alloy and poor surface quality, which will bring more workload to the next process; At the same time, the existing high-vanadium ferro-vanadium refining process has a low degree of automation for adding reducing agents, mostly manual operations, low work efficiency, and the injection volume cannot be guaranteed, which cannot meet the technical requirements of the injection process

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