CN212199377U - System for efficiently recovering valuable metals in soldering tin electrolysis anode mud - Google Patents
System for efficiently recovering valuable metals in soldering tin electrolysis anode mud Download PDFInfo
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- CN212199377U CN212199377U CN202020549842.3U CN202020549842U CN212199377U CN 212199377 U CN212199377 U CN 212199377U CN 202020549842 U CN202020549842 U CN 202020549842U CN 212199377 U CN212199377 U CN 212199377U
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Abstract
A system for efficiently recovering valuable metals in soldering tin electrolysis anode mud comprises a batching system (1), a rotary smelting furnace system (4), a vacuum furnace (8), a fuming furnace system (9) and a flue gas treatment system (13) which are arranged in a unified field; the batching system comprises a group of raw material bins (2) and a mixture hopper (3) which are arranged in parallel; the rotary smelting furnace system comprises a rotary smelting furnace (5), a rotary furnace flue gas cooler (6) and a rotary furnace cloth bag dust collector (7); the fuming furnace system comprises a fuming furnace (10), a fuming furnace flue gas cooler (11) and a fuming furnace cloth bag dust collector (12); the flue gas treatment system (13) comprises a tail gas desulfurization system (14) and a chimney (15). The utility model discloses can high-efficient the valuable metal that contains in retrieving soldering tin electrolysis anode mud, harmful impurity obtains effectively opening a way, and the flow is short, easy operation, and the operating cost is low, and the valuable metal rate of recovery is high, and is energy-conserving, environmental protection is effectual.
Description
Technical Field
The utility model relates to a valuable metal recovery system technical field in soldering tin electrolysis anode mud.
Background
The soldering tin electrolysis anode mud is a byproduct generated in the soldering tin electrolysis refining process, and mainly comprises tin, lead, bismuth, antimony, silver, gold, arsenic and the like, and has complex components and higher treatment difficulty. Particularly, arsenic contained therein is difficult to be effectively separated from other valuable metals as a harmful element.
Some enterprises adopt wet treatment to recover part of valuable metals, but the process is long, the equipment corrosion is serious, the cost is high, and the recovery rate of the valuable metals is low. Some enterprises adopt the tin soldering electrolytic anode mud to be smelted together with tin concentrate to recover part of valuable metals, and the problems of long flow, easy dispersion of the valuable metals, low recovery rate and the like exist, and the effect is poor. The traditional smelting method of tin-soldering electrolytic anode mud matched with tin concentrate is to smelt tin concentrate in a blast furnace, a reverberatory furnace, an electric furnace and the like to produce crude tin and produce tin-rich slag. The smelting furnace tin-rich slag is subjected to fuming, dilution and recovery of tin smoke dust by a side-blown fuming furnace and the like. Blast furnace smelting belongs to the backward productivity and is basically eliminated at present. The reverberatory furnace and the electric furnace are still the smelting equipment which uses more soldering tin electrolysis anode mud and matches with tin concentrate at present. The method has the characteristics of simple process method, small capacity, high energy consumption, high labor intensity, multiple production links, long flow, difficulty in effectively opening harmful impurities such as arsenic and the like, easiness in dispersion of valuable metals in the soldering tin electrolytic anode mud, low recovery rate of the valuable metals and poor recovery effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that above-mentioned prior art exists, provide one kind can high-efficiently retrieve valuable metal among the soldering tin electrolysis anode mud, and equipment structure and easy operation, valuable metal rate of recovery are high, harmful impurity arsenic etc. can obtain effectively opening a way, the energy consumption is low, environmental protection, safe system.
The purpose of the utility model is realized through the following technical scheme:
a system for efficiently recovering valuable metals in tin soldering electrolytic anode mud comprises a batching system, a rotary smelting furnace system, a vacuum furnace, a fuming furnace system and a flue gas treatment system which are arranged in a unified field; the batching system comprises a group of raw material bins arranged in parallel and a mixture hopper arranged below the raw material bins; the rotary smelting furnace system comprises a rotary smelting furnace, a rotary furnace flue gas cooler and a rotary furnace cloth bag dust collector, wherein the rotary furnace flue gas cooler and the rotary furnace cloth bag dust collector are sequentially connected to the back of a smoke outlet of the rotary smelting furnace through pipelines; the fuming furnace system comprises a fuming furnace, a fuming furnace flue gas cooler and a fuming furnace cloth bag dust collector, wherein the fuming furnace flue gas cooler and the fuming furnace cloth bag dust collector are sequentially connected to the back of an exhaust port of the fuming furnace through pipelines; the flue gas treatment system comprises a tail gas desulfurization system and a connecting chimney which are sequentially connected through a pipeline; the mixture hopper is connected with the rotary smelting furnace through a feeding mechanism and feeds the mixture into the rotary smelting furnace; the rotary smelting furnace is indirectly connected with the vacuum furnace through an alloy ingot transfer device, alloy produced by smelting in the rotary smelting furnace is cast into ingots and then is sent into the vacuum furnace to recover valuable metals, the rotary smelting furnace is connected with the fuming furnace through a slag transfer device, and slag produced by smelting in the rotary smelting furnace is sent into the fuming furnace to be vulcanized, volatilized and recovered with tin; the exhaust ports of the rotary furnace cloth bag dust collector and the fuming furnace cloth bag dust collector are connected into a tail gas desulfurization system through pipelines.
Adopt the utility model discloses, can send into soldering tin electrolysis anode mud and smelt into many first alloys and slag in the rotation smelting furnace, send into many first alloys vacuum furnace multilevel processing and retrieve various valuable metals one by one, send into the slag fuming furnace and handle the recovery tin, send into flue gas that rotation smelting furnace and fuming furnace produced respectively behind cooling, the dust collection unified flue gas processing system that sends into behind the processing of back up to standard and discharge. Compared with other process systems, the utility model has the main advantages that:
(1) the utility model discloses the system adopts the pyrometallurgy, can high-efficiently retrieve multiple valuable metals such as tin, lead, bismuth, gold, silver, antimony that contain in the soldering tin electrolysis anode mud, and harmful impurity arsenic etc. obtains effectively opening a way, and the flow is short, easy operation, and the operating cost is low, and the energy consumption is low, and safety and environmental protection are qualified for the next round of competitions.
(2) The utility model discloses the flue gas that will smelt and fuming production handles respectively earlier, makes harmful impurity arsenic obtain effectively opening a way, and valuable metal obtains effectively retrieving, then with tail gas centralized processing, the low concentration SO in the tail gas2Finally, the tail gas is discharged after reaching the standard after desulfurization treatment.
(3) The utility model discloses equipment is simple, compact structure, and occupation of land is few, and the construction investment is low, and is high-efficient practical.
The utility model discloses carry out reasonable combination with prior art equipment, the system that can directly retrieve valuable metal in the soldering tin electrolysis anode mud high-efficiently has been built, valuable metal in the soldering tin electrolysis anode mud has been realized directly high-efficiently retrieving, the method of prior art smelting soldering tin electrolysis anode mud collocation tin concentrate together has been abandoned, it is complicated effectively to have solved prior art technology, the production link is many, the flow is long, harmful impurity arsenic etc. are difficult to obtain effectively opening a way, valuable metal in the soldering tin electrolysis anode mud disperses easily, the valuable metal rate of recovery is low, retrieve outstanding problems such as effect difference.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Detailed Description
As shown in figure 1, it is the system for efficiently recovering valuable metals in soldering tin electrolysis anode mud of the utility model, which comprises a batching system 1, a rotary smelting furnace system 4, a vacuum furnace 8, a fuming furnace system 9 and a flue gas treatment system 13 which are arranged in a unified field. The batching system 1 comprises a group of raw material bins 2 and a mixture hopper 3, wherein the raw material bins 2 and the mixture hopper 3 are arranged in parallel. The rotary smelting furnace system 4 comprises a rotary smelting furnace 5, a rotary furnace flue gas cooler 6 and a rotary furnace bag dust collector 7 which are sequentially connected to the back of a smoke outlet of the rotary smelting furnace through pipelines. The fuming furnace system 9 comprises a fuming furnace 10, a fuming furnace flue gas cooler 11 and a fuming furnace bag dust collector 12, wherein the fuming furnace flue gas cooler and the fuming furnace bag dust collector are sequentially connected to the back of a smoke outlet of the fuming furnace through pipelines. The flue gas treatment system 13 comprises a tail gas desulfurization system 14 and a connecting chimney 15 which are sequentially connected through a pipeline. The mixture hopper 3 is connected with the rotary smelting furnace 5 through a feeding mechanism 16, and feeds the mixture into the rotary smelting furnace, wherein the feeding mechanism can be a feeding pipeline or a feeding car. The rotary smelting furnace 5 is indirectly connected with the vacuum furnace 8 through an alloy ingot transfer device 18, alloy produced by smelting in the rotary smelting furnace is poured into a casting mold 17 to form an alloy ingot, the alloy ingot is sent into the vacuum furnace 8 through the alloy ingot transfer device 18 to recover valuable metals, the rotary smelting furnace 5 is connected with the fuming furnace 10 through a slag transfer device 19, and slag produced by smelting in the rotary smelting furnace is sent into the fuming furnace 10 to be vulcanized, volatilized and tin is recovered; exhaust ports of the rotary furnace bag dust collector 7 and the fuming furnace bag dust collector 12 are connected to a tail gas desulfurization system 14 through pipelines.
A set of raw materials feed bin 2 stores various materials such as soldering tin electrolysis anode mud, flux, reductant respectively in every feed bin, the feed bin adopts prior art's automatic weighing and control feed bin, can purchase in the market, has automatic weighing mechanism at every feed bin discharge gate, can carry out automatic weighing and control to the ejection of compact. The mixture hopper 3 arranged below the raw material bins is connected with the raw material bins through feeding pipelines, so that the raw materials are automatically conveyed in a closed mode, and the device is clean, efficient and environment-friendly. The discharge of each raw material bin is determined according to the charge proportion set by the smelting process of the rotary smelting furnace, and after entering the mixture hopper 3, the discharge is fed into the rotary smelting furnace 5 through the feeding mechanism 16. The feeding mechanism is a lifting movable feed hopper with a switch at the bottom, the rotary smelting furnace 5, the rotary furnace flue gas cooler 6 and the rotary furnace cloth bag dust collector 7 are prior art devices, and the rotary smelting furnace 5, the rotary furnace flue gas cooler and the rotary furnace cloth bag dust collector are rotary devicesThe smelting furnace 5 is provided with a combustion system, an exhaust system, a slag raking device, an alloy pouring device and the like. The vacuum furnace 8, the fuming furnace 10, the fuming furnace flue gas cooler 11, the fuming furnace cloth bag dust collector 12 and the tail gas desulfurization system 14 are all the prior art devices. The vacuum furnace 8 is an internally heated vacuum furnace equipped with a group of materials with daily treatment of 10 tons, 20 tons and 30 tons, and is provided with a feeding system, a water supply system, a negative pressure system and the like. The fuming furnace 10 is 4m in the prior art2The box-type fuming furnace is provided with a feeding device, an air supply and coal supply device, a flue gas waste heat utilization device and a lean slag discharge device.
The method for efficiently recovering valuable metals in the soldering tin electrolysis anode mud by adopting the system shown in FIG. 1 comprises the steps of firstly feeding the soldering tin electrolysis anode mud into a rotary smelting furnace to be smelted into alloy and slag, feeding the alloy into a vacuum furnace to be subjected to multi-stage treatment to recover various valuable metals one by one, feeding the slag into a fuming furnace to be treated to recover tin, respectively cooling smoke generated by the rotary smelting furnace and the fuming furnace, collecting dust, then uniformly feeding the smoke into a smoke treatment system to be treated, and then discharging the smoke after reaching the standard. The specific process is as follows: the soldering tin electrolysis anode mud, the flux, the reducing agent and the like which are respectively stored in the raw material bins 2 are fed into a mixture hopper 3 according to a set proportion for proportioning, then the proportioning is automatically added into a rotary smelting furnace 5 through a feeding mechanism 16, fuel, air and oxygen required by smelting are sprayed into a combustion system of the rotary smelting furnace for smelting, harmful smelting flue gas containing arsenic enters a rotary furnace bag dust collector 7 after being cooled through a rotary furnace flue gas cooler 6, effective recovery and open circuit are obtained, and the harmful smelting flue gas is handed to qualified units for open circuit treatment. The tail gas of the flue gas discharged by the rotary kiln cloth bag dust collector 7 enters a tail gas desulfurization system 14 of a flue gas treatment system 13. After the smelting of each furnace is finished, the rotary smelting furnace is tilted, slag is taken off, and then all the alloy is poured out. Pouring the smelted alloy into a casting die 17 for ingot casting, and conveying the cast alloy ingot into a vacuum furnace 8 through an alloy ingot transfer device 18, wherein the vacuum furnace recovers tin, lead, bismuth, gold, silver and antimony step by step according to the difference of the boiling points of various valuable metals contained in the alloy. The boiling point of bismuth in the alloy is 1560 ℃, which is the lowest, and bismuth is firstly volatilized and recovered in one-time vacuum; the boiling point of antimony is 1635 ℃, the rank is low, and the second stepVolatilizing and recovering antimony; boiling point of lead is 1749 ℃, discharging the third step, volatilizing and recovering lead in the third step; the boiling point of silver is 2212 ℃, the boiling point of tin is 2260 ℃, and the fourth step is carried out to obtain the tin-silver alloy which is used for preparing silver-containing solder; the remaining gold had a boiling point of 2856 ℃ and remained in the residue together with the copper. The smelting slag is sent into the fuming furnace 10 through the slag transfer device 19 to be vulcanized, volatilized and recovered with tin, and the lean slag after tin recovery is discharged out of the furnace. The tin-containing flue gas discharged from the fuming furnace is cooled by a fuming furnace flue gas cooler 11 and then enters a fuming furnace cloth bag dust collector 12 to recover tin smoke dust, and the flue gas tail gas discharged from the fuming furnace cloth bag dust collector 12 enters a tail gas desulfurization system 14 of a flue gas treatment system 13. All the flue gas tail gas entering the flue gas treatment system 13 is subjected to tail gas desulfurization 14 to remove low-concentration SO2And the tail gas reaching the standard is discharged from a chimney 15. The recovery rates of tin, lead, bismuth, gold, silver and antimony respectively reach more than 98%, 95%, 96%, 90%, 95% and 95%, and the recovery cost is reduced by 20% compared with the prior art. The operation and control of the rotary smelting furnace 5, the vacuum furnace 8, the fuming furnace 10, the rotary furnace flue gas cooler 6, the rotary furnace cloth bag dust collector 7, the fuming furnace flue gas cooler 11, the fuming furnace cloth bag dust collector 12, the tail gas desulfurization system 14 and other equipment are carried out according to the operation process specifications of all the equipment, are the prior art, and can be operated by the technicians in the field.
The utility model discloses equipment and device, if the feed proportioning system 1, rotation smelting furnace system 4, vacuum furnace 8, fuming furnace system 9, flue gas processing system 13, feeding mechanism 16, alloy ingot transfer device 18, slag transfer device 19 etc. that contain raw materials feed bin 2 and mixture hopper 3 are prior art equipment and device.
The utility model discloses system's equipment input cost is low, compact structure, process flow are short, can directly retrieve tin, lead, bismuth, gold, silver, multiple valuable metals such as antimony that contain in the soldering tin electrolysis anode mud and rate of recovery height high with high efficiency. The system has simple operation, low operation cost, low energy consumption, safety and good environmental protection condition.
Claims (1)
1. A system for efficiently recovering valuable metals in soldering tin electrolysis anode mud is characterized by comprising a batching system (1), a rotary smelting furnace system (4), a vacuum furnace (8), a fuming furnace system (9) and a flue gas treatment system (13) which are arranged in a unified field; the batching system (1) comprises a group of raw material bins (2) arranged in parallel and a mixture hopper (3) arranged below the raw material bins; the rotary smelting furnace system (4) comprises a rotary smelting furnace (5), a rotary furnace flue gas cooler (6) and a rotary furnace bag dust collector (7), wherein the rotary furnace flue gas cooler (6) and the rotary furnace bag dust collector are sequentially connected to the back of a smoke outlet of the rotary smelting furnace through pipelines; the fuming furnace system (9) comprises a fuming furnace (10), a fuming furnace flue gas cooler (11) and a fuming furnace bag dust collector (12), wherein the fuming furnace flue gas cooler (11) and the fuming furnace bag dust collector are sequentially connected to the back of a smoke outlet of the fuming furnace through pipelines; the flue gas treatment system (13) comprises a tail gas desulfurization system (14) and a connecting chimney (15) which are sequentially connected through a pipeline; the mixture hopper (3) is connected with the rotary smelting furnace (5) through a feeding mechanism (16) and feeds the mixture into the rotary smelting furnace; the rotary smelting furnace (5) is indirectly connected with the vacuum furnace (8) through an alloy ingot transfer device (18), alloy produced by smelting in the rotary smelting furnace is cast into ingots and then is sent into the vacuum furnace (8) to recover valuable metals, the rotary smelting furnace (5) is connected with the fuming furnace (10) through a slag transfer device (19), and slag produced by smelting in the rotary smelting furnace is sent into the fuming furnace (10) to be vulcanized, volatilized and tin is recovered; exhaust ports of the rotary furnace cloth bag dust collector (7) and the fuming furnace cloth bag dust collector (12) are connected into a tail gas desulfurization system (14) through pipelines.
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| CN202020549842.3U CN212199377U (en) | 2020-04-15 | 2020-04-15 | System for efficiently recovering valuable metals in soldering tin electrolysis anode mud |
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| CN202020549842.3U CN212199377U (en) | 2020-04-15 | 2020-04-15 | System for efficiently recovering valuable metals in soldering tin electrolysis anode mud |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111270080A (en) * | 2020-04-15 | 2020-06-12 | 云南锡业股份有限公司铜业分公司 | System and method for efficiently recovering valuable metals in soldering tin electrolysis anode mud |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111270080A (en) * | 2020-04-15 | 2020-06-12 | 云南锡业股份有限公司铜业分公司 | System and method for efficiently recovering valuable metals in soldering tin electrolysis anode mud |
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