CN1056772A - Air furnace continuous melting for waste storage battery lead-contained material - Google Patents
Air furnace continuous melting for waste storage battery lead-contained material Download PDFInfo
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- CN1056772A CN1056772A CN90101671A CN90101671A CN1056772A CN 1056772 A CN1056772 A CN 1056772A CN 90101671 A CN90101671 A CN 90101671A CN 90101671 A CN90101671 A CN 90101671A CN 1056772 A CN1056772 A CN 1056772A
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- lead
- plumbous
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Abstract
The present invention relates to the leaded powder-material of waste lead accumulator is the reverberatory furnace continuous melting process of raw material.With the anthracite is reducing agent, and sodium carbonate is flux, and the stove powder forms the charge bank with certain charge bank angle and length along the furnace side wall.Fire box temperature is 1100 ℃-1350 ℃, and oven cavity atmosphere is neutrality or week reduction.But the continuous smelting of this process alleviated working strength of workers more than 300 days, had improved working condition.Plumbous direct yield is 93-95%, and plumbous total recovery is 95-97%.This process siege ability height, the ideal fuels rate has reduced raw-material consumption and product cost less than 25%.Economic benefit can increase more than 20%.
Description
The present invention relates to refine plumbous process with pyrogenic process, the powder-material with waste lead accumulator is the process of raw material with reverberatory furnace continuous smelting lead more precisely.
Lead is one of important non-ferrous metal, and lead one of main application in automobile and electrical industry is exactly to make storage battery, and the consumption of lead of making storage battery occupies significant proportion in the plumbous year consumption of various countries.It is 1,070,000 tons that the U.S. consumed plumbous amount in 1980, and wherein the plumbous amount of storage battery consumption is 64.5 ten thousand tons, accounts for 60.3% of plumbous year total flow.390,000 tons of year consumptions of Japan's lead, wherein the plumbous amount of storage battery consumption is 210,000 tons, accounts for 53% of lead year total flow.China's storage battery year consumption of lead is about about 50,000 tons, accounts for about 25% of plumbous year total flow.
Because storage battery is used certain hour, just can not use again.Therefore plumbous regeneration is paid attention to by various countries in the waste lead accumulator.Scrap battery is the primary raw material of reviver.Whole world lead bullion consumption was 5,300,000 tons in 1980, and wherein reviver accounts for 39% for 2,800,000 tons.The year consumption of state's revivers such as American and Britain, day and West Germany accounts for about 48% of plumbous year total flow, and the Soviet Union accounts for 1/3rd.Yielding poorly of China's reviver, reviver year consumption only account for about 15% of plumbous year total flow.China's reviver annual production is about ten thousand tons of 3-4.
Handle the method for the lead-containing material of scrap battery, reverberatory smelting, shaft smelting, electro-smelting and rotary furnace smelting are generally arranged and be in the wet processing process of conceptual phase.
Lead-containing material with reverberatory furnace processing waste lead accumulator in the prior art is the periodic breaks melting, this method is to adopt anthracite to make the reducing agent of lead oxide, and adding lead in the iron powder replacement vulcanized lead, the method has been used reducing smelting process and the precipitation process in the lead-smelting method.Waste lead accumulator obtains lead-containing material after disacidify, shelling.Its material proportion (weight ratio) is about lead-containing material: iron filings: anthracite=100: 16-22: 5.Join in the reverberatory furnace after by charge ratio, on siege, be divided into some stockpiles, under the temperature of 1200 ℃-1400 ℃ of high temperature, carry out melting various material fusion.In fusion process, need artificial stirring 1-3 time, after 2-4 hour, finish melting.Slag and product lead are emitted via a discharge port, in lead pan heavy sorting from after obtain product lead.And then add the melting operation that a collection of furnace charge carries out following one-period, so fusion process is interrupted.The advantage of handling the scrap battery lead-containing material with reverberatory furnace is that equipment and technology are simple, and small investment is easy to operate, but operating condition is poor.There is not stabilised bath when being interrupted melting, treating capacity is little, every refining one stove need manually turn over the rake furnace charge 1-3 time, labour intensity is big, and is seriously polluted, and the ideal fuels rate is up to about 35%, the stove life cycle is short, need repair stove 1-2 time every year, and plumbous direct yield is low, and the direct yield of metallic lead is about 86-89%, slag and matte lead tolerance height, lead-in-dreg is generally 8-10%, and the lead that flue dust is taken away accounts for 8-11%, and the lead that slag and matte are taken away accounts for 4-6%, the slag amount of output accounts for 20% of furnace charge amount, iron-holder is near 60%, the ratio of the high iron blast furnace slag 4.3-4.5 that weighs, and it is not good that slag is separated with lead.The meltage of lead copper matte in high iron blast furnace slag increases plumbous loss also than higher.If when handling powder with this reverberatory furnace, siege ability and lead recovery are lower.Lead copper matte can not return processing again, thereby makes the total recovery and the increase economic benefit that improve lead be subjected to considerable restraint.
American documentation literature US2,966,350(1956) a kind of reverberatory furnace with new structure has been proposed, with the reverberatory furnace of this structure, be that raw material is smelted lead with the lead-containing material of scrap battery.In the literary composition furnace type structure special, complexity has been done detailed narration, but the condition of concrete melting lead is not described in detail.The advantage of this method is can carry out continuously owing to the reverberatory furnace that has utilized new structure makes lead smelting, and its shortcoming is complex structure, the operation inconvenience of reverberatory furnace, does not see that so far it is at the industrial report that obtains implementing.
The document that has (" reclaiming plumbous furnace charge from scrap lead cream newly fills a prescription ", non-ferrous metal is smelted part, 1987 the 6th phases) has proposed a kind of furnace charge from scrap lead cream recovery lead and has newly filled a prescription, and scrap lead cream is a kind of powder scrap when producing storage battery.Total lead content of scrap lead cream is about 77%, makes reducing agent with carbon, and flux is soda (sodium carbonate), silica and calcium oxide.The laboratory test smelting temperature is 1100 ℃, and the recovery time is 1 hour, and its concrete prescription is carbon 3-5%, soda 3-5%, silica 0.5-1%, calcium oxide 0.3-0.5%, but do not mention plumbous concrete smelting process, the also not mentioned recovery that can be used for waste lead accumulator.
It is raw material that purpose of the present invention just is to work out with the leaded powder-material of scrap battery, utilize the reverberatory furnace of existing copper smelting simple in structure, carry out the process of continuous smelting lead, overcome U.S. Pat 2,966,350 reverberatory furnace structure complexity, unhandy shortcoming can overcome existing shortcoming with reverberatory furnace interruption melting splicer skill again, can carry out plumbous continuous smelting, and equipment is simple, easy operating improves plumbous direct yield and total recovery, reduces fuel rate, thereby can reduce the cost of reviver, improve workman's work situation and working condition again.
The present invention is a kind of process of reverberatory furnace continuous smelting of scrap battery lead-containing material, the powder-material that containing of scrap battery is plumbous is by proportioning and reducing agent charcoal, coke, anthracite a kind of and flux sodium carbonate (soda) mixing wherein forms furnace charge, its charge ratio is for being 100 to contain plumbous powder-material, its reducing agent charcoal, coke, wherein a kind of of anthracite for containing the 4-10%(percetage by weight of plumbous powder-material, down together), flux sodium carbonate is the 2-8% that contains plumbous powder-material, the furnace charge that mixes is joined in the stove from charge door, make furnace charge side wall along stove in stove be formed with the certain charge bank angle and the charge bank of length, the control fire box temperature is at 1100 ℃ to 1350 ℃, and oven cavity atmosphere is neutral, wherein a kind of of week reduction.Form the molten bath on the siege plane in fusion process, dividing in bath has two melt layer, and bottom is a liquid lead, and superficial layer is a molten slag layer, and product and slag are emitted respectively from putting plumbous mouth and slag tap.
For lead smelting is better carried out, make furnace charge in stove, be formed with the charge bank of certain charge bank angle along the side wall of stove, its charge bank angle is good between 35 °-45 °.
After waste lead accumulator removed housing, separator materials such as hard rubber or engineering plastics by method disacidify, shelling, the sorting of prior art, obtain the lead-containing material of waste lead accumulator.Lead-containing material is made up of anode plate grid, negative electrode grid, utmost point bridge, positive plate filler and negative plate filler.Above-mentioned lead-containing material with Mechanical Crushing (fragmentation can be carried out in a ball mill or rod mill, also can take the mode of autogenous grinding), be its objective is filler is split away off from pole plate, sieve again.Oversize is for containing the lead material, and it is utmost point bridge, grid fragment.Screenings is made up of filler and a small amount of slashings grid, the powder-material that contains lead that process of the present invention exactly is used.Contain and contain metal lead powder, lead oxide, lead sulfate in the plumbous powder-material, also contain a small amount of antimony.In containing the lead material, be mainly metallic lead, also contain more antimony.Also contain elements such as micro-copper, arsenic, bismuth, silver in these two kinds of material.Contain the lead material and contain plumbous powder-material overall average lead tolerance more than 80%.Contain plumbous powder-material lead tolerance also more than 70%.Contain plumbous powder-material and account for more than 50% of total lead-containing material.
To contain the plumbous lead material usefulnessization lead pan that contains more than 90% and melt, the plumbous ingot casting of liquid obtains lead-antimony alloy.The temperature of changing molten Pb in the lead pan is controlled between 500 ℃-550 ℃, temperature is above 600 ℃, lead oxide begins rapid generation, supernatant lead oxide is the iron wall of etch pot consumingly, can cover one deck charcoal or other reducing agent at bath surface during melting, preventing plumbous oxidation, and can play reduction to containing the lip-deep oxide-film of lead material.The time produce a spot of leaded scum silica frost in fusing, carry out melting after sending the reverberatory furnace batching.
Used main equipment is the continuous smelting reverberatory furnace among the present invention.Auxiliary equipment is disintegrating machine, screening machine, change lead pan, charge mixing machine, charger, Sheng lead pan, ingot mould, dust arrester installation, burner etc.Above-mentioned all devices is that the one of ordinary skill in the art is known.
The charge door of main equipment continuous smelting reverberatory furnace is positioned at the furnace roof both sides, near side wall, charge door arranges that along the furnace length direction every side is provided with several charge doors at regular intervals, the number of charge door is decided according to the length of stove, but also can be arranged to single charge door as the case may be.Proper site on the furnace wall of continuous smelting reverberatory furnace is provided with the discharge port of plumbous and slag respectively, and realization is plumbous, slag is emitted respectively.The position that is provided with of discharge port is that the affiliated those of ordinary skill of this area is known.Liquid lead can be emitted by siphon port, can put lead continuously.The heat-supplying mode of reverberatory furnace: small-sized reverberatory furnace can be used the combustion chamber heat supply of broken coal laminar, and this can reduce the ash content that enters burner hearth, but the adjusting inconvenience of its temperature and oven cavity atmosphere; Bigger reverberatory furnace can be used the pulverized coal injection combustion heat supplying, but there is 40% ash content to fall into approximately the quantity of slag is increased, so best fuel is oil and fuel gas.A small amount of organic substance of carrying secretly in the furnace charge all is fully burned in reverberatory furnace.In order to reduce the corrosion of furnace wall, in case of necessity the slag line water jacket can be set at the slag lining of furnace wall.
And flux sodium carbonate (soda) wherein a kind of with reducing agent charcoal, coke, anthracite mixes the formation furnace charge to the powder-material that containing of scrap battery is plumbous by proportioning.Its proportioning is for being 100 to contain plumbous powder-material, wherein a kind of of reducing agent charcoal, coke, anthracite for containing the 4-10%(percetage by weight of plumbous powder-material, down together), flux sodium carbonate (soda) is for containing the 2-8% of plumbous powder-material, in reducing agent charcoal, coke, anthracite with anthracite for well.Because the anthracite low price, can reduce the cost of product.In order to reduce the fusing point of slag, reduce lead-in-dreg, wherein a kind of as auxiliary flux of 0.1-0.5% silica (with leaded powder-material is a hundred per cent, and percetage by weight is same down), 0.3-0.5% calcium oxide allocated in slag making better sometimes in furnace charge.Fluorite and iron oxide also can be used as auxiliary flux.
Above-mentioned material is mixed the formation furnace charge in charge mixing machine, (all less than below 12 millimeters, moisture content is less than 12% for its granular size) delivers to furnace top bin.By certain time interval (being generally 5-15 minute) to the reflection furnace charge.Make furnace charge be formed with the charge bank of certain charge bank angle and length along the side wall of stove in stove, its charge bank angle is 35 °-45 °, the length of the length visual reflex stove of charge bank and deciding.
Be added to material on the charge bank, processes such as under the burner hearth action of high temperature, the furnace charge of charge bank superficial layer melts, reduction, decomposition, cross reaction, slag making through charge door.Also charge bank superficial layer Yin Wendu raises rapidly and a series of physicochemical change takes place in other words.It at first is water evaporates, the fusing of metallic lead, the generation of carbon monoxide, the reduction of lead oxide, lead sulfate changes vulcanized lead into, the cross reaction between lead sulfate and vulcanized lead, lead oxide and the vulcanized lead, the reduction of vulcanized lead, the fusing of sodium carbonate and decomposition, the generation of vulcanized sodium, sodium oxide molybdena reach the slag making reaction with the relevant thing of ash content.Molten product enters the molten bath by the charge bank surface, also carries out above-mentioned reaction on the contact-making surface in charge bank and molten bath.
The various fused mass and the solid particle that enter in the molten bath carry out layering according to different proportion, form rational melt layer and distribute, and form stable molten bath on the siege plane; The two-layer melt layer of main branch in the molten bath, bottom is the liquid lead layer, and superficial layer is for melting slag blanket, and the total depth in molten bath is the 300-600 millimeter; Between liquid lead layer and slag blanket, also may form thin matte layer.The part fusion process also can carry out in the molten bath.After lead oxide, vulcanized lead, lead sulfate, carbon etc. enter the molten bath, still can proceed reaction, at weld pool surface skim carbon granules layer is arranged, make the weld pool surface layer also form reducing atmosphere.Solid carbon can play reduction to metallic compound.Plumbous in the molten bath, slag can obtain good sedimentation separation, and the plumbous and slag of liquid is emitted respectively through putting plumbous mouthful and slag tap respectively, obtain product and reduce lead and slag, slag can return prepare burden or otherwise processed to reclaim lead and vulcanized sodium.Siphon lead tap can be set, and lead can also be emitted continuously.In fusion process from being dosed to the carrying out that whole fusion process that product emits can continous-stable.
The control fire box temperature is at 1100 ℃ to 1350 ℃ in fusion process, and oven cavity atmosphere is neutrality or week reduction, furnace pressure be little negative pressure to pressure-fired, but be good with negative 2 millimeters of water to positive 2 millimeters of water.The outlet temperature scope of flue gas is 1100 ℃ ± 70 ℃.Flue gas obtains flue dust through gathering dust and returns batching, its waste gas emptying or processing discharging.Combustion air can give heat with giving hot device, and hot air temperature is reached more than 200 ℃, and normal temperature air also can as combustion air.The direct yield of process lead of the present invention is between 93-95%, and between the plumbous total recovery 95-97%, the ideal fuels rate is less than 25%, and it is low that lead is gone into dust rate, only is about 3%, can produce continuously more than 300 days in 1 year.
Process of the present invention has the following advantages:
1. but the fusion process stable continuous of process of the present invention is carried out, and can produce continuously more than 300 days every year, and the cycle of operation is long, has saved maintenance cost.Because melting carries out continuously, in fusion process, have stable molten bath to exist all the time, the sedimentation that helps lead, slag and slag separate with lead, also help fusion process further finish with stove in thermally-stabilised.Do not add iron filings in the furnace charge, do not rely on the precipitation melting reaction of iron and vulcanized lead, significantly reduced the generation of ferrous sulfide, vulcanized lead matte, improved the plumbous rate of recovery, plumbous direct yield has improved 5-6%, and plumbous overall recovery has improved 8-10%.
2. process siege ability of the present invention be the 3.5-6 ton/square metre. day, and the siege ability of existing technology only is 3 tons/square metre. about day, the siege ability can improve nearly 1 times, has improved production efficiency.
3. the ideal fuels rate of process of the present invention is less than 25%, reduced more than 15% than the ideal fuels rate of prior art, and it is low that lead is gone into dust rate, is 3% only, reduced consumption of raw materials, reduced the cost of product, and business efficiency can increase more than 20%.Produce 2000 tons of waste lead accumulator regenerative lead factories per year for one, annual benefit is more than 400,000.
4. process of the present invention need not manually be turned over the rake furnace charge fully, has alleviated working strength of workers, has improved workman's working condition and work situation, helps environmental protection, and this technology helps improving its mechanization degree.
5. the flue dust of process of the present invention and slag all can return the burden process of reverberatory furnace.
6. process of the present invention not only is applicable to the melting of scrap battery lead-containing material, also is suitable for other high leaded powder furnace charges, for example leaded lead concentrate and high lead slag more than 70%.
More specifically describe the present invention with following non-limiting examples, protection scope of the present invention is not subjected to the qualification of these embodiment.
Embodiment 1
Used main equipment continuous smelting reverberatory furnace is the reverberatory furnace that is used for copper smelting, is that the one of ordinary skill in the art is known, and it has a plumbous discharge port, a slag discharge port, and other equipment is as mentioned above.The furnace charge (its granular size is all less than 10 millimeters, and moisture is 8%) that will mix by proportioning is delivered to furnace top bin.Be added to the stove from charge door.12.7 square metres of the reverberatory furnace hearth areas of continuous smelting, every side have three charge doors, feed in raw material once every 6 minutes, and the charge bank angle is 40 °.It is leaded 80.91% that scrap battery contains plumbous powder-material, is 100 to contain plumbous powder-material, the soda consumption be its 5%, the anthracite consumption be its 6%.1150 ℃ of fire box temperatures, 450 millimeters of molten bath total depths.The control oven cavity atmosphere is a week reduction, the furnace pressure 0-1 millimeter of water, 3.8 tons/square metre of siege abilities. day, combustion-supporting with 210 ℃ of hot-airs.About 1080 ℃ of exhanst gas outlet temperature, ideal fuels rate 21.4%, it is 2.9% that lead is gone into dust rate, vertical yield 94.3%, lead from waste storage overall recovery 96.8%,
Embodiment 2
Its method of operation and condition are substantially with embodiment 1, and only different is that the every side of reverberatory furnace only has two charge doors.Other has one of siphon lead tap, one of slag tap, 7.5 square metres of hearth areas.It is leaded 74.8% to contain plumbous powder-material, soda consumption 3%, anthracite consumption 8%, 36 ° of charge bank angles.1240 ℃ of fire box temperatures, normal temperature air is combustion-supporting, and positive 0.5 millimeter of water of furnace pressure is to negative 0.5 millimeter of water, 5.2 tons/square metre of siege abilities.Day, 350 millimeters of molten bath total depths, 1160 ℃ of exhanst gas outlet temperature, ideal fuels rate 23.7%, vertical yield 93.1%, plumbous overall recovery 96.2%.
Claims (6)
1, a kind of process of reverberatory furnace continuous smelting of scrap battery lead-containing material, the powder-material that containing of scrap battery is plumbous is by proportioning and reducing agent charcoal, coke, anthracite a kind of and flux sodium carbonate (soda) wherein, mix the formation furnace charge, feature of the present invention is
1) its proportioning is that to contain plumbous powder-material be 100, and wherein a kind of of its reducing agent charcoal, coke, anthracite is the 4-10% that contains plumbous powder-material (percetage by weight, down with), and flux sodium carbonate is the 2-8% that contains plumbous powder-material.
2) furnace charge that mixes is joined in the stove from charge door, make furnace charge side wall along stove in stove be formed with the certain charge bank angle and the charge bank of length.
3) the control fire box temperature is at 1100 ℃-1350 ℃, and oven cavity atmosphere be neutrality, wherein a kind of of weak property reproducibility.
4) form the molten bath on grate surface, the molten bath branch has two melt layer, and bottom is a liquid lead, and superficial layer is a molten slag layer, and product lead and slag are emitted respectively from putting plumbous mouth and slag tap.
2, according to the process of the reverberatory furnace continuous smelting of a kind of scrap battery lead-containing material of claim 1, it is characterized in that the charge bank angle is 35 °-45 °.
3, according to the process of the reverberatory furnace continuous smelting of a kind of scrap battery lead-containing material of claim 1, it is characterized in that, (to contain plumbous powder-material is 100 to allocate the 0.1-0.5% silica in furnace charge into, percetage by weight, down with), wherein a kind of of the calcium oxide of 0.3-0.5% as auxiliary flux.
4, according to the process of the reverberatory furnace continuous smelting of a kind of scrap battery lead-containing material of claim 1, it is characterized in that the total depth in molten bath is the 300-600 millimeter.
5, according to the process of the reverberatory furnace continuous smelting of a kind of scrap battery lead-containing material of claim 1, it is characterized in that furnace pressure is that little negative pressure is to pressure-fired.
6, according to the process of the reverberatory furnace continuous smelting of a kind of scrap battery lead-containing material of claim 5, it is characterized in that, furnace pressure for negative 2 millimeters of water to positive 2 millimeters of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90101671A CN1027457C (en) | 1990-03-29 | 1990-03-29 | Air furnace continuous melting for waste storage battery lead-contained material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN90101671A CN1027457C (en) | 1990-03-29 | 1990-03-29 | Air furnace continuous melting for waste storage battery lead-contained material |
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| Publication Number | Publication Date |
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| CN1056772A true CN1056772A (en) | 1991-12-04 |
| CN1027457C CN1027457C (en) | 1995-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN90101671A Expired - Fee Related CN1027457C (en) | 1990-03-29 | 1990-03-29 | Air furnace continuous melting for waste storage battery lead-contained material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197459B (en) * | 2006-12-04 | 2012-09-05 | 许兴义 | Solid waste recovery and processing system of waste lead acid accumulator |
| CN103320614A (en) * | 2013-07-10 | 2013-09-25 | 郴州市金贵银业股份有限公司 | Lead matte pyrogenic process treatment technology |
| CN103451444A (en) * | 2013-10-09 | 2013-12-18 | 河南豫光金铅股份有限公司 | Device and technology for smelting and processing secondary lead materials to generate lead bullion by adopting bottom blowing furnace hearth |
| CN104451161A (en) * | 2014-12-04 | 2015-03-25 | 中南大学 | Method for low-temperature smelting of regenerated lead |
| CN109266865A (en) * | 2018-10-17 | 2019-01-25 | 湖北楚凯冶金有限公司 | A kind of smelting process of lead-acid accumulator lead plaster |
-
1990
- 1990-03-29 CN CN90101671A patent/CN1027457C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197459B (en) * | 2006-12-04 | 2012-09-05 | 许兴义 | Solid waste recovery and processing system of waste lead acid accumulator |
| CN103320614A (en) * | 2013-07-10 | 2013-09-25 | 郴州市金贵银业股份有限公司 | Lead matte pyrogenic process treatment technology |
| CN103320614B (en) * | 2013-07-10 | 2015-11-18 | 郴州市金贵银业股份有限公司 | A kind of lead matte pyrogenic attack technique |
| CN103451444A (en) * | 2013-10-09 | 2013-12-18 | 河南豫光金铅股份有限公司 | Device and technology for smelting and processing secondary lead materials to generate lead bullion by adopting bottom blowing furnace hearth |
| CN104451161A (en) * | 2014-12-04 | 2015-03-25 | 中南大学 | Method for low-temperature smelting of regenerated lead |
| CN109266865A (en) * | 2018-10-17 | 2019-01-25 | 湖北楚凯冶金有限公司 | A kind of smelting process of lead-acid accumulator lead plaster |
| CN109266865B (en) * | 2018-10-17 | 2021-01-01 | 湖北楚凯冶金有限公司 | Smelting method of lead paste of lead-acid storage battery |
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| Publication number | Publication date |
|---|---|
| CN1027457C (en) | 1995-01-18 |
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