Fuming process of tin-containing material
A process and fuming technology, which is applied in the field of fuming technology of tin-containing materials, can solve the problems of large flue gas volume and environmental protection pressure
Pending Publication Date: 2022-07-01
贺毅林
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Problems solved by technology
The amount of flue gas produced by the fuming furnace processing unit material is large, and the flue gas contains SO 2 High, desulfurization is required, and environmental protection pressure is high
Method used
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[0064] The technical solutions in the embodiments of the invention will be clearly and completely described below in conjunction with the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
[0065] from figure 1 It can be seen that the process of the present invention mainly includes main processes such as raw material warehouse and batching, smelting in the smelting zone of the oxygen-enriched side-blowing dual-zone furnace, and slag fuming and smelting in the fuming zone of the oxygen-enriched side-blowing dual-zone furnace. The specific steps are as follows:
[0066] (1) Batching of tin ore and tin slag to control Fe:SiO 2 In 0.8~1.2, the processing capacity is 20t / h. The main ...
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The fuming process for the tin-containing material of the oxygen-enriched side-blown double-zone furnace is obvious in energy-saving effect and good in environmental protection. The mixed materials such as the tin-containing material, the flux, the pyrite, the low-grade matte and the pea coal are metered and then conveyed into a smelting area. And blowing oxygen-enriched air into the smelting area. Generated copper matte and slag are subjected to precipitation separation, the copper matte is settled on the bottom layer of the hearth, and hot slag flows into a fuming area; the flux, pyrite, pea coal and other materials are conveyed into the fuming area after being metered. Oxygen-enriched air is blown into the fuming area. And the generated copper matte is precipitated and separated from the slag, settles at the bottom layer of the hearth, is mixed with the copper matte in the smelting area and is discharged from a siphon port. And the slag is discharged through the slag hole and crushed. In the smelting area and the fuming area, stannous oxide in the slag and a vulcanizing agent are subjected to fuming reaction, generated stannous sulfide is oxidized on the upper portion in the furnace, and generated stannous oxide is collected by dust collecting equipment to serve as a product. SO2-containing high-temperature flue gas discharged from the furnace body is cooled, dedusted and then fed for acid making.
Description
technical field [0001] The invention relates to a fuming process for tin-containing materials in the non-ferrous metal metallurgical industry, in particular to a fuming process for tin-containing materials using an oxygen-enriched side-blown double-zone molten pool furnace to produce tin-containing fumes and low-grade ice. Copper, flue gas sent to acid. The process slag has low tin content, low copper content, high recovery rate, energy saving, acid production from flue gas, good environmental protection effect and high degree of mobilization. Background technique [0002] The tin ore and tin slag are usually treated with traditional smoke furnaces, the coal consumption rate per unit material is 50-70%, and the electricity consumption per ton of material is about 300 kWh. The amount of flue gas produced by the unit material processed by the flue gasifier is large, and the flue gas contains SO 2 High, desulfurization is required, and environmental protection pressure is hig...
Claims
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IPC IPC(8): C22B25/02C22B25/06C22B15/00C01B17/74
CPCC22B25/02C22B25/06C22B15/005C01B17/74
Inventor 贺毅林
Owner 贺毅林