Resource recycling device for mercury in nonferrous smelting acid mud

Abstract

The utility model provides a resource recycling device for mercury in nonferrous smelting acid mud. The resource recycling device comprises a feeding bin, an aging chamber, an electric heating distillation furnace, a mercury metal condensing system, a mercury metal collecting system, a waste residue recycling system and a flue gas treatment system, a coulter mixer and a blanking screw conveyor are sequentially arranged between the feeding bin and the aging chamber; a grab bucket crane and a feeding screw conveyor are arranged between the aging chamber and the electric heating distillation furnace; the electric heating distillation furnace is respectively connected with the mercury metal condensation system and the waste residue recovery system; the mercury metal condensation system is respectively connected with the mercury metal collection system and the flue gas treatment system; the mercury metal collecting system comprises a mercury collecting tank, a vortex separator, a water collecting pit and a mercury finished product barrel, wherein the vortex separator and the water collecting pit are connected with the mercury collecting tank, and the mercury finished product barrel is connected with the vortex separator. The resource recycling device for the mercury in the nonferrous smelting acid mud, provided by the utility model, is relatively high in automation degree and relatively high in mercury recycling rate.

Description

Technical Field

[0001] The utility model relates to the technical field of non-ferrous metal smelting waste treatment, in particular to a mercury resource recovery device for acid sludge in non-ferrous smelting. Background Art

[0002] At present, the treatment of mercury pollution in China is still in its primary stage, and the treatment level is not high. China's mercury pollution prevention and control technology capabilities are backward. The large-scale use of mercury in traditional industries and the improper treatment of waste have led to the continuous spread of mercury pollution across the country, seriously affecting our environment.

[0003] Among them, mercury pollution in non-ferrous metal smelting is one of the main sources of mercury pollution in China. Whether at home or abroad, mercury resource recovery technology has always been a major problem in the industry. At present, for the treatment of mercury-containing waste residue or acid sludge, methods such as roasting-pyrolysis method, electrochemical oxidation method and solid-state oxidation method are generally used. Among them, the roasting-pyrolysis method is a commonly used industrial method for mercury recovery at home and abroad because of its simple process, but it has the characteristics of low mechanization level and insufficient system tightness.

[0004] Therefore, there is an urgent need for a mercury resource recovery device for acid sludge in non-ferrous smelting with high mechanization level, simple and convenient operation and high mercury recovery rate. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a mercury resource recovery device for acid sludge in non-ferrous smelting with high automation degree and high mercury recovery rate.

[0006] To solve the above technical problem, the utility model provides a mercury resource recovery device for acid sludge in non-ferrous smelting, which includes a feeding bin, an aging chamber, an electrothermal distillation furnace, a mercury metal condensation system, a mercury metal collection system, a waste residue recovery system and a flue gas treatment system;

[0007] A plowshare mixer and a feeding screw are sequentially arranged between the feeding bin and the aging chamber;

[0008] A grab crane and a feeding screw are arranged between the aging chamber and the electrothermal distillation furnace;

[0009] The electrothermal distillation furnace is respectively connected to the mercury metal condensation system and the waste residue recovery system;

[0010] The mercury metal condensation system is respectively connected to the mercury metal collection system and the flue gas treatment system;

[0011] The mercury metal collection system includes a mercury collection tank, a vortex separator and a sump respectively connected to the mercury collection tank, and a mercury finished product barrel connected to the mercury collection line.

[0012] Further, the electrothermal distillation furnace includes a heating zone, a high-temperature zone, and a cooling zone, and the heating zone, the high-temperature zone, and the cooling zone adopt a fully enclosed negative-pressure working mode.

[0013] Further, the mercury metal condensation system is a four-stage condenser, and the four-stage condenser includes a first-stage condenser, a second-stage condenser, a third-stage condenser, and a fourth-stage condenser connected in series.

[0014] Further, the first-stage condenser is a jacket-type condenser cooled by circulating air, with the inlet temperature of the first-stage condenser controlled at 400-700 °C and the outlet temperature controlled at 350-300 °C; the second-stage condenser, the third-stage condenser, and the fourth-stage condenser are all shell-and-tube heat exchangers cooled by circulating cooling water, with the outlet temperature of the second-stage condenser controlled at 90-110 °C and the outlet temperature of the third-stage condenser controlled at 40-50 °C.

[0015] Further, the waste residue recovery system includes a bucket elevator connected to the waste residue outlet of the electrothermal distillation furnace, and a waste residue buffer bin for collecting, temporarily storing, and regularly transporting the waste residue generated by the electrothermal distillation furnace to a non-ferrous volatilization kiln for treatment.

[0016] Further, the flue gas treatment system includes a scrubbing tower connected to the flue gas outlet of the mercury metal condensation system, a liquid-phase spray multi-stage purified flue gas system connected to the scrubbing tower, an absorption tower and an inclined plate sedimentation tank respectively connected to the liquid-phase spray multi-stage purified flue gas system.

[0017] Further, the feeding screw conveyor, the feeding screw conveyor, and the bucket elevator are each provided with a fully automatic flipping system.

[0018] Further, the fully automatic flipping system is flipped under the control of a PLC.

[0019] A mercury resource recovery device for non-ferrous smelting acid sludge provided by the utility model can evenly mix acid sludge, caustic soda and lime in a feeding bin by using a plowshare mixer. The obtained mixed material can be sent into an aging chamber by a feeding screw conveyor, and dispersed on the ground of the aging chamber by a grab crane for aging reaction, and then sent into a feeding screw conveyor by the grab crane and transported to an automatic distillation furnace for distillation. Moreover, both the feeding screw conveyor and the feeding screw conveyor are respectively provided with a fully automatic flipping system controlled by PLC intelligent control to control the automatic feeding and discharging of materials. Furthermore, the waste residue after distillation is sent into a bucket elevator through a fully automatic flipping system controlled by PLC intelligent control, and then sent to a waste residue buffer bin by the bucket elevator, and regularly transported to a non-ferrous volatilization kiln in the factory area for treatment. At the same time, the enriched mercury obtained by condensation is purified by a vortex separator to obtain finished mercury, and then filled into a mercury finished product bucket under water seal conditions by an automatic filling machine controlled by PLC intelligent control. The process is mechanized and controlled by PLC intelligent control, with simple and convenient operation, avoiding the traditional manual feeding, feeding and discharging methods, realizing the automation of operation, greatly improving the work efficiency, solving the problem of low mechanization level in the current roasting-pyrolysis method for mercury resource recovery, having a relatively high mercury resource recovery efficiency, improving the economic benefits of mercury resource recovery, having a high mercury recovery efficiency, and the recovery rate of mercury in acid sludge can be stabilized above 95%. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a mercury resource recovery device for non-ferrous smelting acid sludge provided by an embodiment of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] See Figure 1 , a mercury resource recovery device for non-ferrous smelting acid sludge provided by an embodiment of the utility model, includes a feeding bin for placing acid sludge, caustic soda and lime, an aging chamber for carrying out a normal-temperature aging reaction on the mixed material formed by evenly mixing acid sludge, caustic soda and lime, an electric heating distillation furnace for distilling the mixed material after the aging reaction, a mercury metal condensation system for condensing the mercury vapor distilled from the mixed material in the electric heating distillation furnace, a mercury metal collection system for collecting the mercury liquid condensed in the metal condensation system, a waste residue recovery system for recovering the waste residue generated after distillation by the electric heating distillation furnace, and a flue gas treatment system for comprehensively treating the flue gas generated in the metal condensation system.

[0022] Among them, a plowshare mixer and a feeding screw conveyor are sequentially arranged between the feeding bin and the aging chamber. After the plowshare mixer evenly mixes raw materials such as acid sludge, caustic soda and lime in the feeding bin, it is transported to the aging chamber by the feeding screw conveyor.

[0023] A grab crane and a feeding screw conveyor are arranged between the aging chamber and the electrothermal distillation furnace. The grab crane grabs the mixed materials after the aging reaction in the aging chamber and sends them to the feeding screw conveyor, and then they are transported into the electrothermal distillation furnace by the feeding screw conveyor.

[0024] The electrothermal distillation furnace is connected to the mercury metal condensation system. The mercury vapor distilled from the mixed materials in the electrothermal distillation furnace is sent to the mercury metal condensation system for condensation. The waste residue obtained after the mixed materials are distilled to produce mercury vapor in the electrothermal distillation furnace is sent to the waste residue recovery system for recovery.

[0025] The mercury metal condensation system is respectively connected to the mercury metal collection system and the flue gas treatment system. The mercury liquid obtained after the mercury vapor is condensed in the mercury metal condensation system enters the mercury metal collection system for collection, and the flue gas generated in the mercury metal condensation system is treated by the flue gas treatment system.

[0026] Among them, the mercury metal collection system includes a mercury collection tank, a mercury collection line and a sump respectively connected to the mercury collection tank, and a mercury finished product barrel connected to the vortex separator.

[0027] Among them, the electrothermal distillation furnace includes a heating-up zone, a high-temperature zone and a cooling zone, and the heating-up zone, the high-temperature zone and the cooling zone adopt a fully enclosed negative-pressure working mode.

[0028] Among them, the mercury metal condensation system is a four-stage condenser, and the four-stage condenser includes a first-stage condenser, a second-stage condenser, a third-stage condenser and a fourth-stage condenser connected in series.

[0029] Among them, the first-stage condenser is a jacketed condenser, which is cooled by circulating air. The inlet temperature of the first-stage condenser is controlled at 400 - 700 °C, and the outlet temperature is controlled at 350 - 300 °C; the second-stage condenser, the third-stage condenser and the fourth-stage condenser are all shell-and-tube heat exchangers, which are cooled by circulating cooling water. The outlet temperature of the second-stage condenser is controlled at 90 - 110 °C, and the outlet temperature of the third-stage condenser is controlled at 40 - 50 °C.

[0030] Among them, the waste residue recovery system includes a bucket elevator connected to the waste residue outlet of the electrothermal distillation furnace, and a waste residue buffer bin, which is used to collect, temporarily store and regularly transfer the waste residue generated by the electrothermal distillation furnace to the non-ferrous volatilization kiln for treatment.

[0031] Among them, the flue gas treatment system includes a scrubbing tower connected to the flue gas outlet of the mercury metal condensation system, a liquid-phase spray multi-stage purified flue gas system connected to the scrubbing tower, an absorption tower and an inclined plate sedimentation tank respectively connected to the liquid-phase spray multi-stage purified flue gas system.

[0032] Among them, the discharging screw conveyor, the feeding screw conveyor and the bucket elevator are respectively provided with a fully automatic flipping system.

[0033] The fully automatic flipping system is controlled by the PLC to perform flipping.

[0034] The following specifically describes the usage method and steps of a mercury resource recovery device for non-ferrous smelting acid sludge provided by the present utility model.

[0035] Step 1) The acid sludge packed in ton bags is transported to the project raw material yard by truck or forklift, and then hoisted to the feeding bin platform by crane. Then, caustic soda and lime are added to the acid sludge on the feeding bin platform, and stirred and mixed for 20 - 40 minutes with a plow mixer. After being evenly mixed, the mixed material is obtained, and then the mixed material is sent into the aging chamber through a feeding screw conveyor.

[0036] Among them, by mass percentage, the components of the acid sludge include 6% - 9% Hg, 1% - 15% S, and 6 - 12% Se. The moisture content of the acid sludge is 25% - 35%, and the solid content of the acid sludge is 10% - 15%.

[0037] Among them, the caustic soda is NaOH with a purity of 98%, and the component of the lime is CaO.

[0038] Among them, when the acid sludge, caustic soda, and lime are mixed, the mass ratio of the acid sludge to the caustic soda is controlled at 1:9 - 1:12, and the mass ratio of the mercury residue to the lime is controlled at 1:3 - 1:5.

[0039] Moreover, the feeding screw conveyor is provided with a fully automatic flipping system, and the fully automatic flipping system of the feeding screw conveyor is intelligently controlled by using the PLC, which can automatically flip and displace the mixed material to the aging chamber, avoiding the traditional manual feeding method, realizing the automation of the operation, and greatly improving the work efficiency.

[0040] Step 2) The mixed material of the acid sludge, caustic soda, and lime sent into the aging chamber is evenly dispersed on the ground of the aging chamber by a grab crane, and the neutralization and solidification reaction is completed under normal temperature and natural conditions. The aging time is 7 - 9 days. During the aging process of the mixed material, the following reactions occur:

[0041] NaOH + H 2 SO 4 →H 2 O + Na 2 SO 4

[0042] HgSe + CaO + O 2 →CaSeO 3 + Hg

[0043] Se + CaO + O 2 →CaSeO 3

[0044] MeSe + CaO + O 2 →MeSeO3

[0045] As 2 O 3 +3CaO == Ca 3 (AsO 3 ) 2

[0046] During the processes of hoisting the acid sludge to the feeding bin platform, stirring and mixing the acid sludge with caustic soda and lime, feeding the mixed material into the aging chamber through the feeding screw conveyor, and natural aging of the mixed material in the aging chamber, all these processes are carried out at normal temperature. The maximum temperature rise caused by the heat release during the mixing and aging reactions of the acid sludge, caustic soda, and lime does not exceed 40 °C. In this way, it is very difficult for mercury in the mixed material to evaporate and enter the gas phase. Therefore, there is no unorganized emission of mercury during this process.

[0047] Step 3) The mixed material after the aging reaction is fed into the feeding screw conveyor by a grab crane and then transported to an electric heating distillation furnace for distillation. The distillation temperature is controlled at 700 - 800 °C, and the reaction time is controlled at 4 - 6 h. During the distillation process, mercury in the mixed material is heated from a solid state to mercury vapor, and the water in the mixed material becomes water vapor and mixes with the mercury vapor to obtain mercury-containing flue gas containing mercury vapor and water vapor, which is discharged from the electric heating distillation furnace. The remaining solid in the mixed material becomes waste residue and is discharged from the electric heating distillation furnace.

[0048] Among them, the electric heating distillation furnace includes a heating-up zone, a high-temperature zone, and a cooling zone. The mixed material after the aging reaction is gradually heated to 700 - 800 °C in the heating-up zone of the electric heating distillation furnace, and then distilled at 700 - 800 °C for 4 - 6 h in the high-temperature zone to fully distill out the mercury in the mixed material. The mercury-containing flue gas distilled out then enters the cooling zone and is appropriately cooled to 400 - 700 °C and discharged from the electric heating distillation furnace into the condensation system. The waste residue obtained after distillation in the electric heating distillation furnace is cooled to 45 °C - 55 °C in the cooling zone and then discharged from the electric heating distillation furnace.

[0049] Among them, the heating-up zone, high-temperature zone, and cooling zone of the electric heating distillation furnace adopt a fully enclosed negative-pressure working mode. In this fully enclosed negative-pressure environment, there is no discharge of mercury gas from the mixed material, so there will be no unorganized emission of mercury.

[0050] Step 4) The mercury-containing flue gas enters the mercury metal condensation system from the electric heating distillation furnace and undergoes multi-stage condensation to obtain a mercury-water mixture and flue gas.

[0051] Among them, the mercury metal condensation system is a four-stage condenser. The first-stage condenser is a jacketed condenser, which is cooled by circulating air. The inlet temperature of the first-stage condenser is controlled at 400-700 °C, and the outlet temperature is controlled at 350-300 °C, producing 2% mercury and mercury soot. The second-stage, third-stage, and fourth-stage condensers are shell-and-tube heat exchangers, which are cooled by circulating cooling water. The heat exchange tubes of the shell-and-tube heat exchangers are made of 316L 050×4mm, and the other materials of the shell-and-tube heat exchangers are made of Q235 material. The outlet temperature of the second-stage condenser is controlled at 90-110 °C, producing about 15% mercury, water, and mercury soot. The outlet temperature of the third-stage condenser is controlled at 40-50 °C, producing about 68% mercury, water, and mercury soot. The fourth-stage condenser condenses to produce about 15% mercury, water, and mercury soot.

[0052] In this way, after the mercury-containing flue gas is cooled and condensed by the four-stage condensers of the first stage, the second stage, the third stage, and the fourth stage respectively, most of the mercury vapor and water vapor in the mercury-containing flue gas will be condensed to form a mercury-water mixture containing mercury soot. And there is still a small amount of mercury vapor in the mercury-containing flue gas that is not condensed and forms flue gas together with other gases and is discharged from the mercury metal condensation system.

[0053] In step 5), the mercury-water mixture containing mercury soot produced by the mercury metal condensation system is discharged into the mercury collection tank. Since the specific gravities of the mercury soot, mercury liquid, and condensed water in the mercury-water mixture containing mercury soot are different, the mercury soot and mercury liquid with a larger specific gravity are deposited at the lower part of the mercury collection tank, while the condensed water with a smaller specific gravity is located at the upper part of the mercury collection tank. After the mercury-water mixture in the mercury collection tank accumulates to a certain amount, the condensed water flows out from the overflow port of the mercury collection tank and converges into the sump, and the mercury soot and mercury liquid are regularly discharged from the bottom of the mercury collection tank to obtain enriched mercury with a mercury content of 99.9%.

[0054] Since a small amount of mercury liquid is easily mixed in the condensed water, in order to further recover the mercury contained in the condensed water, the condensed water converging in the sump is returned to the acid sludge as a raw material to circularly extract and recover the mercury mixed in the condensed water.

[0055] Step 6) The enriched mercury is separated by a vortex separator to obtain finished mercury and mercury soot. Among them, the vortex separator uses a separation funnel to separate and purify the collected enriched mercury. The separated finished mercury is filled into a mercury finished product barrel under the condition of water seal by an automatic filling machine controlled by PLC intelligence. A small amount of impurities such as ash and oxides are mixed in the mercury soot separated from the enriched mercury. The mercury soot is directly returned to the acid sludge as a raw material to further recycle the mercury in it. Among them, the mercury finished product barrel is a cylindrical container made of carbon steel or stainless steel with a capacity of 30 Kg to 35 Kg. The finished mercury is filled and sealed at normal temperature by an automatic filling machine controlled by PLC intelligence. The whole filling process is carried out under water seal. Moreover, the mercury vapor pipe network of the mercury metal condensation system for condensing the mercury-containing flue gas has strong airtightness. The pipe network material is made of high-quality stainless steel without leakage risk, so that it can ensure that no mercury gas is discharged during the process, realizing non-organized emission without mercury, thus avoiding the impact of mercury escape on the environment during the process.

[0056] As a specific embodiment of the present invention, the waste residue discharged from the electric heating distillation furnace enters the waste residue recovery system. The waste residue is first sent to a bucket elevator, then sent to the waste residue buffer bin by the bucket elevator for collection and storage, and finally regularly transported to a non-ferrous volatilization kiln for treatment by a vehicle in the factory area. Among them, the bucket elevator is provided with a fully automatic flipping system controlled by PLC intelligence, which can automatically flip and shift the waste residue into the bucket elevator, and no longer uses the traditional manual method for feeding the waste residue, realizing the automation of the operation.

[0057] As a specific embodiment of the present invention, the flue gas generated by the mercury metal condensation system is sent to the flue gas treatment system to further recover the residual mercury in the flue gas, and at the same time, the flue gas is purified up to the standard and then discharged into the atmosphere. The flue gas treatment system mainly includes a washing tower, a liquid-phase spray multi-stage flue gas purification system (i.e., ZYHB flue gas system), an absorption tower and a pressure filtration device. Among them, the liquid-phase spray multi-stage flue gas purification system includes a purification tower. The diameter of the purification tower is 1.5 m and the height is 7 m. It adopts a series connection mode of four-stage washing purification towers. The liquid-phase spray multi-stage mercury removal process can efficiently remove mercury in the flue gas.

[0058] During the flue gas treatment process, the flue gas is sent to the washing tower by a booster fan for washing and then enters the liquid-phase spray multi-stage flue gas purification system (i.e., ZYHB flue gas system). The liquid-phase spray multi-stage flue gas purification system can efficiently remove the residual mercury in the flue gas. The removal rate of mercury in the flue gas can reach more than 99%, and the mercury concentration in the outlet flue gas can be reduced to 0.02 mg / Nm 3, far lower than the "Lead and Zinc Industrial Pollutant Emission Standard GB25466". The flue gas after mercury removal enters the absorption tower to remove harmful gases and becomes qualified waste gas to be discharged. In the liquid phase spray multi-stage flue gas purification system, mercury is efficiently removed to form saturated waste liquid. The saturated waste liquid is filtered through the filter press equipment to separate the solid and liquid. The slag produced after the filtration is returned to the acid mud as a batching for further recycling, and the liquid produced by the filtration is sent to the water treatment station for further treatment and then discharged after meeting the standards.

[0059] The utility model provides a mercury resource recovery device in non-ferrous smelting acid mud, which can evenly mix acid mud, flake caustic soda and lime in a feeding bin using a plow mixer, and the obtained mixed material can be sent to an aging chamber by a feeding screw machine, and dispersed on the ground of the aging chamber by a grab bucket for aging reaction, and then sent to a feeding screw machine by a grab bucket for distillation. In addition, the feeding screw machine and the feeding screw machine are respectively provided with a fully automatic turning system controlled by a PLC intelligent system to control the automatic feeding and unloading of materials. In addition, the waste residue after distillation is sent to a bucket elevator through a fully automatic turning system controlled by a PLC intelligent system, and then sent to a waste residue buffer bin by a bucket elevator, and regularly transported to a non-ferrous volatilization kiln for treatment by vehicles in the factory area. At the same time, the enriched mercury obtained by condensation is purified by a vortex separator to obtain finished mercury, and then filled into a finished mercury barrel under water-sealed conditions by an automatic filling machine controlled by a PLC intelligent system. The process is mechanized and controlled by PLC intelligent control, which is simple and convenient to operate. It avoids the traditional manual loading, feeding and unloading, realizes the automation of operation, greatly improves the work efficiency, and solves the problem of low mechanization level in the current roasting-pyrolysis method of mercury resource recovery. The resource recovery efficiency of mercury is high, which improves the economic benefits of mercury resource recovery. The mercury recovery efficiency is high, and the recovery rate of mercury in acid mud can be stabilized at more than 95%.

[0060] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A device for recycling mercury from non-ferrous smelting acid mud, characterized by: It includes a feeding bin, an aging chamber, an electric distillation furnace, a mercury metal condensation system, a mercury metal collection system, a waste residue recovery system and a flue gas treatment system; A plowshare mixer and a feeding screw machine are arranged in sequence between the feeding bin and the aging chamber; A grab bucket and a feeding screw machine are arranged between the aging chamber and the electric heating distillation furnace; The electric distillation furnace is respectively connected to the mercury metal condensation system and the waste residue recovery system; The mercury metal condensation system is connected to the mercury metal collection system and the flue gas treatment system respectively; The mercury metal collection system comprises a mercury collection tank, a vortex separator and a sump respectively connected to the mercury collection tank, and a mercury finished product barrel connected to the mercury collection line.

2. The mercury resource recovery device in non-ferrous smelting acid mud according to claim 1 is characterized by: The electric distillation furnace comprises a heating zone, a high temperature zone and a cooling zone, and the heating zone, the high temperature zone and the cooling zone adopt a fully enclosed negative pressure working mode.

3. The mercury resource recovery device in non-ferrous smelting acid mud according to claim 1 is characterized by: The mercury metal condensation system is a four-stage condenser, and the four-stage condenser comprises a first-stage condenser, a second-stage condenser, a third-stage condenser and a fourth-stage condenser connected in series.

4. The mercury resource recovery device in non-ferrous smelting acid mud according to claim 3 is characterized by: The first-stage condenser is a jacketed condenser, which is cooled by circulating air. The inlet temperature of the first-stage condenser is controlled at 400-700°C, and the outlet temperature is controlled at 350-300°C. The second-stage condenser, the third-stage condenser and the fourth-stage condenser are all shell and tube heat exchangers, which are cooled by circulating cooling water. The outlet temperature of the second-stage condenser is controlled at 90-110°C, and the outlet temperature of the third-stage condenser is controlled at 40-50°C.

5. The device for recycling mercury from non-ferrous smelting acid mud according to claim 1, characterized in that: The waste residue recovery system includes a bucket elevator connected to the waste residue outlet of the electric distillation furnace, and a waste residue buffer bin, which is used to collect, temporarily store and regularly transport the waste residue generated by the electric distillation furnace to the non-ferrous volatilization kiln for treatment.

6. The device for recycling mercury from non-ferrous smelting acid mud according to claim 1, characterized in that: The flue gas treatment system comprises a washing tower connected to the flue gas outlet of the mercury metal condensation system, a liquid phase spray type multi-stage flue gas purification system connected to the washing tower, and an absorption tower and an inclined plate settling tank respectively connected to the liquid phase spray type multi-stage flue gas purification system.

7. The device for recycling mercury from nonferrous smelting acid mud according to claim 1, characterized in that: The unloading screw machine, the loading screw machine and the bucket elevator are respectively provided with a fully automatic turning system.

8. The device for recycling mercury from non-ferrous smelting acid mud according to claim 7, characterized in that: The fully automatic turning system is turned under the control of PLC.

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