Method of adopting oxygen-enriched vortex bath smelting furnace to treat tin-containing material

Abstract

The invention The invention discloses a method of adopting an oxygen-enriched vortex bath smelting furnace to treat secondary tin-containing sundry. The oxygen-enriched vortex bath smelting furnace comprises a furnace body and multiple spray guns, a furnace cavity is arranged in the furnace body which is provided with a feeding port, a smoke dust outlet, a slag outlet and a discharging port, the furnace cavity has a round cross section, multiple spray gun inserting holes which are distributed along the peripheral direction of the furnace body at intervals, and the spray guns are inserted into the spray gun inserting holes and deviate from the circle center of the round cross section of the furnace cavity along a same direction. The method includes the following steps: feeding the tin-containing material and reducing coal into the furnace cavity through the feeding port; adopting the spray guns to spray fuel and oxygen-enriched air into the furnace cavity to generate coarse tin and intermediate slag, and discharging the coarse tin from the discharging port; continuing adopting the spray guns to spray fuel and oxygen-enriched air into the furnace cavity, adding reducing coal to smelt the intermediate slag to generate high-iron tin and molten slag, discharging the high-iron tin from the discharging port, and discharging the molten slag from the slag outlet. The method has the advantages of low energy consumption and good smelting effect.

Description

technical field [0001] The invention relates to a non-ferrous metallurgy method, in particular to a method for treating tin-containing materials with an oxygen-enriched vortex molten pool melting furnace. Background technique [0002] A relatively common problem in molten pool smelting metallurgical furnaces in the related art is that the materials fed into the furnace from the feed port tend to float on the surface of the melt, and cannot fully participate in the molten pool reaction, affecting production efficiency, and sometimes even cannot produce normally. For example, in the side-blowing smelting technology in the related art, the side-blowing lance blows toward the center of the furnace body, and the blowing produces a certain stirring effect on the melt in the furnace, but the materials added at the top tend to float on the surface of the melt, making it difficult to enter the melt. body fully participates in the reaction. Although the top-blowing smelting technolog...

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Problems solved by technology

[0002] A relatively common problem in molten pool smelting metallurgical furnaces in the related art is that the materials fed into the furnace from the feeding port tend to float on the surface of the melt, and cannot fully participate in the molten pool reaction, which affects production efficiency and sometimes even fails to produce normally.

For example, in the side-blowing smelting technology in the related art, the side-blowing lance blows toward the center of the furnace body, and the blowing produces a certain stirring effect on the melt in the furnace, but the materials added at the top tend to float on the surface of the melt, making it difficult to enter the melt. Participate fully in the response

Although the top-blowing smelting technology in the related art can stir the molten pool, the working principle of the top-blowing lance makes the melt roll up and down too violently in the furnace. In order to avoid splashing, the top-blowing furnace must increase the height of the furnace body, which leads to the construction of the furnace body. Difficult to increase the cost of furnace body and spray gun

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