Equipment and method for recovering mercury in waste gas generated by metal smelting
A technology of metal smelting and recovery methods, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of low recovery efficiency, environmental pollution, low recovery rate, etc., and achieve the effect of avoiding waste
Pending Publication Date: 2022-02-25
郑晓峰
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Problems solved by technology
Roasting of ores in the non-ferrous metal smelting industry is generally carried out under high temperature conditions, so most of the mercury in the ore enters the smelting flue gas in the form of zero-valent mercury. dust, product sulfuric acid or flue gas, causing further environmental pollution
[0003] In addition, although mercury is a pollutant, it is also a rare resource. It is widely used in smelting, instrument manufacturing, chemical industry, pharmaceutical industry and atomic energy industry. , it is advisable to adopt a mercury removal technology based on recovery, but mercury cannot be completely recovered in the traditional mercury recovery process, because the exhaust gas is directly discharged into the air after passing through concentrated sulfuric acid in countercurrent, resulting in residual mercury vapor in the exhaust gas, etc. , and the recovery rate is not high only by sulfuric acid washing, and the recovery efficiency is low
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[0028] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the conventionally placed position when the product of the invention is used. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", ...
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The invention belongs to the field of waste metal recovery, and particularly relates to equipment and method for recovering mercury in waste gas generated by metal smelting. The equipment comprises a reaction box, wherein a condensation box is fixedly arranged in the middle of the upper end of the reaction box, a ventilation opening is formed in the middle of the bottom of the reaction box, second ventilation openings are formed outside partition plates around the ventilation opening, a connecting rod is fixedly arranged at the upper end of the ventilation opening in the upper end face of the reaction box, one end of the connecting rod penetrates into the ventilation opening and is slidably provided with a fan shaft, the fan shaft is arranged on the outer circumference of the fan shaft, third ventilation openings are formed outside the partition plates of the second ventilation openings, and sulfuric acid storage boxes are fixedly arranged on the two sides of the third ventilation openings. According to the invention, mercury metal in metal smelting can be recycled, and the mercury metal is prevented from being discharged into air through multi-layer efficient recycling.
Description
technical field [0001] The invention belongs to the field of scrap metal recycling, and in particular relates to equipment and a recycling method for recycling mercury in waste gas generated by metal smelting. Background technique [0002] Mercury is a toxic pollutant that exists in many common metallurgical raw materials. Almost all zinc ores contain mercury. Mercury is also present in lead ores, some copper ores, and even gold ores and pyrites. Roasting of ores in the non-ferrous metal smelting industry is generally carried out under high temperature conditions, so most of the mercury in the ore enters the smelting flue gas in the form of zero-valent mercury. dust, product sulfuric acid or flue gas, causing further environmental pollution. [0003] In addition, although mercury is a pollutant, it is also a rare resource. It is widely used in smelting, instrument manufacturing, chemical industry, pharmaceutical industry and atomic energy industry. , it is advisable to ado...
Claims
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IPC IPC(8): B01D53/78B01D53/64B01D53/00
CPCB01D53/78B01D53/64B01D53/002B01D2257/602
Inventor 郑晓峰
Owner 郑晓峰