CN212387742U - Device for preparing polymeric ferric sulfate from lead smelting waste residues - Google Patents
Device for preparing polymeric ferric sulfate from lead smelting waste residues Download PDFInfo
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- CN212387742U CN212387742U CN202020578433.6U CN202020578433U CN212387742U CN 212387742 U CN212387742 U CN 212387742U CN 202020578433 U CN202020578433 U CN 202020578433U CN 212387742 U CN212387742 U CN 212387742U
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Abstract
The utility model discloses a device of waste residue preparation polyferric sulfate is smelted to lead. Belongs to the technical field of lead-acid storage battery recycling. The method mainly solves the problem that valuable metals in the lead smelting tailings are not effectively utilized at present. It is mainly characterized in that: the device comprises a dilute acid storage tank, a dilute acid output pump, a waste residue pickling tank, a plate-and-frame booster pump, a plate-and-frame filter press, a plate-and-frame liquid production tank, a heat exchanger, a nanofiltration membrane booster pump, a nanofiltration membrane group, a nanofiltration liquid production tank, a reaction kettle feed pump, a ferric sulfate polymerization reaction kettle, a spiral discharging machine and a polymeric ferric sulfate storage tank which are sequentially connected through pipelines; still include lead smelting waste residue jar and belt material loading machine of keeping in. The utility model has the characteristics of waste lead acid battery electrolyte and lead smelting waste residue high efficiency are retrieved, can obtain qualified polyferric sulfate product and the high-efficient stable of apparatus for producing operation, mainly be applicable to the industrial use of lead smelting tailings preparation polyferric sulfate.
Description
Technical Field
The utility model belongs to the technical field of lead acid battery recycle, in particular to device of waste lead acid battery electrolyte and lead smelting waste residue preparation polyferric sulfate.
Background
China has become the biggest lead-acid storage battery producing country in the world, and the annual production amount of waste lead storage batteries exceeds 260x104t. The waste lead-acid storage battery mainly comprises 11-30% of waste electrolyte, 24-30% of lead alloy, 30-40% of lead paste and 22-30% of other substances. Therefore, 11-30 t of waste electrolyte can be generated every 100t of waste lead-acid storage battery, and if the waste electrolyte is directly discharged to the natural environment without being treated, soil acidification and heavy metal pollution of underground water resources can be caused. In the aspect of solving the problem of acid wastewater, the membrane separation technology is widely applied to the industries of smelting, electroplating, mining, metal surface processing and the like, is a novel and efficient fluid separation technology, and has the characteristics of low energy consumption, good separation effect, easiness in operation and the like. In the prior secondary lead smelting industry, the main component of the produced tailings is SiO in the smelting process of lead-containing materials2FeO, CaO and the like, wherein the total amount of the FeO, the CaO and the like accounts for about 95 percent of the weight of the tailings, and the content of the FeO is 40 to 65 percent; at present, 99 percent of domestic cement is calcined and fired by a qualified cement production unit, but the inventory and the transfer process of lead smelting tailings have the risk of secondary pollution, and the cement industry belongs to the high-dust pollution industry; meanwhile, the method does not consider the efficient utilization of valuable metals in the tailings. However, the productivity of the domestic regenerated lead enterprises for treating the waste lead-acid storage batteries exceeds 1000 ten thousand tons per year, about 100 ten thousand tons of smelting tailings are derived every year, and the productivity of the regenerated lead industry is rapidly increased, so the problems need to be solved urgently.
Disclosure of Invention
The utility model aims at providing a device of waste residue preparation polyferric sulfate is smelted to lead has the effect that the waste residue is smelted to the waste lead acid battery electrolyte of recovery and recycle and lead, is applicable to the industrialization and uses, solves the problem that the waste lead acid battery electrolyte environmental pollution, lead smelting waste residue commission outward treatment transportation etc. counter-value pollutes, promotes the green construction of lead acid battery circulation industrial chain.
The technical solution of the utility model is that: the utility model provides a device of waste residue preparation polyferric sulfate is smelted to lead which characterized in that: the device comprises a dilute acid storage tank, a dilute acid output pump, a waste residue pickling tank, a plate-and-frame booster pump, a plate-and-frame filter press, a plate-and-frame liquid production tank, a heat exchanger, a nanofiltration membrane booster pump, a nanofiltration membrane group, a nanofiltration liquid production tank, a reaction kettle feed pump, a ferric sulfate polymerization reaction kettle, a spiral discharging machine and a polymeric ferric sulfate storage tank which are sequentially connected through pipelines; the lead smelting waste residue temporary storage tank and the belt feeder are also included; the top of the lead smelting waste residue pickling tank is connected with a belt feeding machine, and the top end of the belt feeding machine is fixedly placed at the bottom of the lead smelting waste residue temporary storage tank.
Through adopting above-mentioned technical scheme, the plate and frame filter press carries out the preliminary treatment to lead smelting slag leachate, can filter the visibility impurity of getting rid of in the lead smelting slag leachate, avoids blockking up the membrane module, guarantees that the device is high-efficient, operate steadily, and the plate and frame booster pump is in the plate and frame filter press with lead smelting slag leachate pump, and the plate and frame production liquid that comes out gets into in the plate and frame production liquid jar. The heat exchange treatment is carried out on the plate frame product liquid through the heat exchange system, the temperature of the plate frame product liquid is controlled to be 20-60 ℃, the service life of the nanofiltration membrane is prolonged, the product liquid flux is ensured, and the metal sulfate crystallization is prevented from blocking the membrane assembly.
And (3) pumping the plate-frame product liquid subjected to heat exchange into a nanofiltration membrane group by a nanofiltration membrane booster pump, pumping the nanofiltration product liquid into a nanofiltration product liquid tank, pumping the nanofiltration product liquid into a ferric sulfate polymerization reaction kettle by a reaction kettle feed pump, and conveying the polyferric sulfate subjected to oxidation and catalytic reaction to a polyferric sulfate storage tank by a spiral discharging machine for preparation of a flocculating and settling medicament in water treatment.
And filtering by using a nanofiltration membrane to obtain a product liquid and a concentrated liquid, wherein the concentrated liquid is a waste liquid with high impurity content. The utility model discloses a mode of concentrate backward flow improves the cyclic regeneration volume of useless lead acid battery electrolyte.
By adopting the technical scheme, ferrous sulfate in the nanofiltration production liquid can be completely converted into ferric sulfate, and the utilization rate of the iron element is improved. Can realize the closed transfer of the polymeric ferric sulfate and reduce the environmental pollution.
In the technical solution of the utility model, the waste residue temporary storage tank is a conical tank; the half-frame liquid production tank, the nanofiltration liquid production tank and the polymeric ferric sulfate storage tank are all cylindrical tanks, are designed in a bottom conical mode and are made of PE plastic materials.
In the technical solution of the utility model, a concentrated solution return pipeline is arranged between the nanofiltration membrane group and the waste residue pickling tank; the ferric sulfate polymerization reaction kettle is made of 316L stainless steel material, is provided with a heating system and an automatic oxidant feeding box, and a discharge hole is provided with a spray dryer.
The technical solution of the utility model is that the waste residue pickling tank and the dilute acid storage tank are made of acid-resistant and corrosion-resistant materials.
The dilute acid output pump, the plate frame booster pump, the nanofiltration membrane booster pump and the reaction kettle feed pump in the technical solution of the utility model are all acid-resistant and corrosion-resistant membrane pumps; the lead smelting waste residue temporary storage tank is made of stainless steel materials.
The filter cloth specification of the plate-and-frame filter press in the technical solution of the utility model is 300 meshes; the nanofiltration membrane group adopts a polyether sulfone nanofiltration membrane, and the aperture is 10-20 nm.
The technical solution of the utility model in the heat exchanger be water-bath heat exchanger, including multistage series connection U type pipeline, U type pipeline material is the PVC material.
The beneficial effects of the utility model reside in that:
1. the waste electrolyte in the waste batteries is temporarily stored in a dilute acid tank and recycled after being collected by an automatic acid pouring machine, so that the pollution of the waste lead-acid storage battery electrolyte to the environment is reduced;
2. according to the content difference of ferric oxide, calcium oxide and the like in the lead smelting tailings, the unit dosage of dilute acid is adjusted, and the dilute acid is fully reacted in an acid leaching tank to form a mixed solution of ferrous sulfate, ferric sulfate and the like, so that the iron element in the lead smelting tailings is effectively extracted;
3. the equipment comprises a plate-and-frame filter pressing and heat exchange system, wherein the plate-and-frame filter pressing is used for primarily filtering the electrolyte of the waste lead-acid storage battery to remove solid impurities such as burning residues, the heat exchange system is used for controlling the temperature of mixed solution such as ferrous sulfate and ferric sulfate, and controlling the temperature to enable the membrane assembly to be in the level with the best performance, and the equipment can be adapted to normal work in a low-temperature environment and has good stability;
4. the purification and filtration of the ferric sulfate solution are realized, and the polymeric ferric sulfate is prepared by the polymerization reaction kettle, so that the aim of economic and environment-friendly utilization of the lead smelting waste residue is fulfilled;
5. the waste lead-acid storage battery electrolyte and the acid electrolyte are treated by pipelines and membrane components, and the site environment is clean and pollution-free.
The utility model has the characteristics of waste lead acid battery electrolyte and lead smelting waste residue high efficiency are retrieved, can obtain qualified polyferric sulfate product and the high-efficient stable of apparatus for producing operation, mainly be applicable to the industrial use of lead smelting tailings preparation polyferric sulfate.
Drawings
Fig. 1 is a schematic view of the structure of the device of the present invention.
In the figure: 1. lead smelting waste residue jar of keeping in, 2, belt material loading machine, 3, dilute acid storage jar, 4, dilute acid output pump, 5, waste residue soaks the acid chest, 6, sheet frame booster pump, 7, sheet frame pressure filter, 8, sheet frame product jar, 9, heat exchanger, 10, receive filter membrane booster pump, 11, receive filter membrane group, 12, receive filter product jar, 13, reation kettle charge pump, 14, ferric sulfate polymeric reaction cauldron, 15, polymeric ferric sulfate storage tank, 16, spiral discharge machine.
Detailed Description
As shown in fig. 1. A device for preparing polymeric ferric sulfate from lead smelting waste residue is characterized in that a dilute acid output pump 4 is connected to the bottom of a dilute acid storage tank 3 and is connected to a waste residue pickling tank 5 through a pipeline. The top of the waste residue pickling tank 5 is connected with a belt feeding machine 2, and the top end of the belt feeding machine 2 is fixedly placed at the bottom of the lead smelting waste residue temporary storage tank 1. The lead smelting waste residue pickling tank 5 is connected with a plate-and-frame filter press 7 through a plate-and-frame booster pump 6, and the plate-and-frame filter press 7 is sequentially connected with a half-frame liquid production tank 8, a heat exchanger 9, a nanofiltration membrane booster pump 10, a nanofiltration membrane group 11, a nanofiltration liquid production tank 12, a reaction kettle feed pump 13, a ferric sulfate polymerization reaction kettle 14, a spiral discharging machine 16 and a polymeric ferric sulfate storage tank 15 through pipelines. The waste residue pickling tank 5 conveys solutions such as ferric sulfate precipitated by pickling to a plate-and-frame filter press 7 through a plate-and-frame booster pump 6, the solutions are temporarily stored in a plate-and-frame liquid production tank 8 after insoluble impurities are removed, the ferric sulfate solution in the plate-and-frame liquid production tank 8 is subjected to heat exchange and temperature rise through a heat exchanger 9, the ferric sulfate solution is conveyed to a nanofiltration membrane group 11 through a nanofiltration membrane booster pump 10 to be subjected to nanofiltration, other sulfates are removed, the produced liquid after nanofiltration enters a nanofiltration liquid production tank 12 to be temporarily stored, the ferric sulfate solution in the nanofiltration liquid production tank 12 is further conveyed to a ferric sulfate polymerization reaction kettle 14 through a reaction kettle feed pump 13 to be subjected to polymerization reaction, and the polymerized ferric sulfate generated after the. The plate-and-frame filter press 7 pretreats the lead smelting slag leachate, the plate-and-frame booster pump 6 pumps the lead smelting slag leachate into the plate-and-frame filter press 7, and the discharged plate-and-frame production liquid enters the plate-and-frame production liquid tank 8. Produce liquid through heat transfer system to the sheet frame and carry out heat transfer treatment, heat transfer system is water bath heat exchange system, including multistage series connection U type pipeline, U type pipeline material is the PVC material, and the liquid flows through is produced in inside confession sheet frame filter-pressing. The temperature of the discharged liquid is ensured to be between 20 and 60 ℃ by controlling the temperature of the water bath.
The specification of the filter cloth of the plate-and-frame filter press 7 is 300 meshes. The nanofiltration membrane group 11 adopts a polyethersulfone nanofiltration membrane with the aperture of 10-20 nm. The device for preparing polymeric ferric sulfate from lead smelting waste residues also comprises a concentrated solution return pipeline for enabling the nanofiltration membrane concentrated solution to flow into the waste residue pickling tank 5, wherein the concentrated solution is generated after membrane filtration by plate frame filter pressing.
The method for preparing the polymeric ferric sulfate comprises the following steps:
When the environmental temperature is lower than 20 ℃, the water bath heat exchange system is started, the plate frame product liquid in the plate frame product liquid tank 8 enters the water bath heat exchange system, and the temperature of the produced liquid is controlled to be between 20 and 60 ℃. The discharged product liquid enters a nanofiltration membrane group 11 through a nanofiltration membrane booster pump 10, and the discharged nanofiltration membrane product liquid enters a nanofiltration product liquid tank 12.
Controlling single feeding of the lead smelting waste residue to be 5 tons, wherein the deviation is 25Kg, and the total content of iron elements in the waste residue is 35% after detection; 16.1 tons of dilute acid is added into the waste residue pickling tank 5, the main content of sulfuric acid is 25 percent, the reaction is carried out for 60 to 70 minutes, the upper solution of the waste residue pickling tank 5 is subjected to filter pressing after the full reaction, the specification of filter cloth of a plate-and-frame filter press 7 is 300 meshes, and the produced liquid after the filter pressing is subjected to nanofiltration purification after heat exchange of a heat exchanger 9 to 50 ℃; the nanofiltration membrane of the nanofiltration membrane group 11 is a polyamide nanofiltration membrane, the pressure difference between the inlet membrane and the outlet membrane is controlled to be 1.5Pa, the content of iron element in the produced nanofiltration liquid ferric sulfate solution is 14.75 percent, purified water is added, and the basicity of ferric sulfate is adjusted to be 30 percent; pumping the nanofiltration product liquid with the adjusted concentration into a ferric sulfate polymerization reaction kettle 14, controlling the temperature of the ferric sulfate polymerization reaction kettle 14 to be 60 ℃, and adding an oxidant to react for 35 minutes to obtain a reddish brown polymeric ferric sulfate solution; heating a polymeric ferric sulfate solution to evaporate and concentrate by heating a polymeric ferric sulfate polymerization reaction kettle 14, controlling the concentration temperature at 110 ℃, concentrating to obtain liquid polymeric ferric sulfate containing more than 15% of iron, and spray-drying at 100 ℃ to obtain light yellow solid powdered polymeric ferric sulfate; and is conveyed to a polymeric ferric sulfate storage tank 15 through a screw discharging machine 16.
Claims (7)
1. The utility model provides a device of waste residue preparation polyferric sulfate is smelted to lead which characterized in that: the device comprises a dilute acid storage tank (3), a dilute acid output pump (4), a waste residue pickling tank (5), a plate-and-frame booster pump (6), a plate-and-frame filter press (7), a plate-and-frame product tank (8), a heat exchanger (9), a nanofiltration membrane booster pump (10), a nanofiltration membrane group (11), a nanofiltration product tank (12), a reaction kettle feed pump (13), a ferric sulfate polymerization reaction kettle (14), a spiral discharging machine (16) and a polymeric ferric sulfate storage tank (15) which are sequentially connected through pipelines; the lead smelting waste residue temporary storage tank (1) and the belt feeding machine (2) are also included; the top of the lead smelting waste residue pickling tank (5) is connected with a belt feeding machine (2), and the top end of the belt feeding machine (2) is fixedly placed at the bottom of the lead smelting waste residue temporary storage tank (1).
2. The device for preparing polymeric ferric sulfate from lead smelting waste slag according to claim 1, wherein: the waste residue temporary storage tank (1) is a conical tank; the plate frame product liquid tank (8), the nanofiltration product liquid tank (12) and the polymeric ferric sulfate storage tank (15) are all cylindrical tanks, are designed in a conical shape at the bottom and are all made of PE plastic.
3. The device for preparing the polymeric ferric sulfate from the lead smelting waste residue according to the claim 1 or 2, which is characterized in that: a concentrated solution reflux pipeline is arranged between the nanofiltration membrane group (11) and the waste residue pickling tank (5); the ferric sulfate polymerization reaction kettle (14) is made of 316L stainless steel material, is provided with a heating system and an automatic oxidant feeding box, and a discharge hole is provided with a spray dryer.
4. The device for preparing the polymeric ferric sulfate from the lead smelting waste residue according to the claim 1 or 2, which is characterized in that: the waste residue pickling tank (5) and the dilute acid storage tank (3) both use acid-resistant and corrosion-resistant materials.
5. The device for preparing the polymeric ferric sulfate from the lead smelting waste residue according to the claim 1 or 2, which is characterized in that: the dilute acid output pump (4), the plate frame booster pump (6), the nanofiltration membrane booster pump (10) and the reaction kettle feed pump (13) are all acid-resistant and corrosion-resistant membrane pumps; the lead smelting waste residue temporary storage tank (1) is made of stainless steel materials.
6. The device for preparing the polymeric ferric sulfate from the lead smelting waste residue according to the claim 1 or 2, which is characterized in that: the specification of the filter cloth of the plate-and-frame filter press (7) is 300 meshes; the nanofiltration membrane group (11) adopts a polyethersulfone nanofiltration membrane with the aperture of 10-20 nm.
7. The device for preparing the polymeric ferric sulfate from the lead smelting waste residue according to the claim 1 or 2, which is characterized in that: the heat exchanger (9) is a water bath heat exchanger and comprises a multi-stage serial U-shaped pipeline, and the U-shaped pipeline is made of PVC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020578433.6U CN212387742U (en) | 2020-04-17 | 2020-04-17 | Device for preparing polymeric ferric sulfate from lead smelting waste residues |
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| CN202020578433.6U CN212387742U (en) | 2020-04-17 | 2020-04-17 | Device for preparing polymeric ferric sulfate from lead smelting waste residues |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111434615A (en) * | 2020-04-17 | 2020-07-21 | 湖北楚凯冶金有限公司 | Device and method for preparing polymeric ferric sulfate from lead smelting waste residues |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111434615A (en) * | 2020-04-17 | 2020-07-21 | 湖北楚凯冶金有限公司 | Device and method for preparing polymeric ferric sulfate from lead smelting waste residues |
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