CN108677031A - A method of recycling lead from lead sponge - Google Patents
A method of recycling lead from lead sponge Download PDFInfo
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- CN108677031A CN108677031A CN201810619894.0A CN201810619894A CN108677031A CN 108677031 A CN108677031 A CN 108677031A CN 201810619894 A CN201810619894 A CN 201810619894A CN 108677031 A CN108677031 A CN 108677031A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000004064 recycling Methods 0.000 title claims description 13
- 230000018044 dehydration Effects 0.000 claims abstract description 55
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 55
- 238000002844 melting Methods 0.000 claims abstract description 32
- 230000008018 melting Effects 0.000 claims abstract description 32
- 238000000926 separation method Methods 0.000 claims abstract description 32
- 239000003792 electrolyte Substances 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 238000002425 crystallisation Methods 0.000 claims description 59
- 230000008025 crystallization Effects 0.000 claims description 52
- KGHMFMDJVUVBRY-UHFFFAOYSA-N antimony copper Chemical compound [Cu].[Sb] KGHMFMDJVUVBRY-UHFFFAOYSA-N 0.000 claims description 26
- 238000007670 refining Methods 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000010006 flight Effects 0.000 claims description 9
- 238000010792 warming Methods 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 23
- 229910052802 copper Inorganic materials 0.000 description 23
- 239000010949 copper Substances 0.000 description 23
- 239000010410 layer Substances 0.000 description 17
- 239000000126 substance Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000013094 purity test Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000007667 floating Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 241001417490 Sillaginidae Species 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/06—Refining
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The method that the present invention relates to a kind of to recycle lead from lead sponge, belongs to lead recovery technology field.By lead sponge vacuum degree be 0.03 ~ 0.07MPa, vacuum melting dehydration temperature be 350 ~ 400 DEG C of stirring conditions under be dehydrated, obtain the dehydration product that upper layer is electrolyte, lower layer is molten bullion, molten bullion obtained after the layered separation of dehydration product；The time of vacuum melting dehydration is 25 ~ 35min/ tons；Obtained molten bullion is refined, lead bullion is obtained.The present invention is dehydrated using vacuum melting, and electrolyte and molten bullion can be made to detach in vacuum metling dehydration, and upper layer is electrolyte, and lower layer is molten bullion.
Description
Technical field
The method that the present invention relates to a kind of to recycle lead from lead sponge, belongs to lead recovery technology field.
Background technology
Lead is widely used in industrial circle, can be used as accumulator, cable protection skin or fuse wire in electric field；
It smelts and chemical field, stereotype or lead pipe can be used as in acidproof title, the protective layer of corrosion cap, atomic energy industry and light；In addition, lead
Compound can be used for pigment industry, glass industry, petroleum industry and medical department etc..Therefore, the smelting production of lead also obtains
Pay attention to extensive.
Wet method refining lead is concentrate through leaching and being electrolysed the process of output metallic lead, and in this course, cathode plate can obtain
Containing large quantity of moisture, electrolyte and copper impurity, and open-textured lead sponge needs to remove to recycle lead from lead sponge
Moisture, electrolyte and copper impurity therein.Traditional sponge lead processing mode is taken off by manually removing the lead sponge on cathode plate
It falls, is then placed into the mold of forcing press, after forcing press briquet, re-dry water removal is finally sent to refining furnace progress
It smelts；Later Wang Zhen clouds et al. have invented the device for removing lead sponge from cathode plate automatically, realize mechanical stripping, production efficiency
There are a degree of promotion, but the process of used compacting dehydration, dewatering time is long, the lead sponge for being such as 8% by water content
To not aqueous, processing capacity is up to 0.2 ton/h for dehydration, affects the efficiency of lead sponge recycling lead.
Invention content
The problem of existing for the above-mentioned prior art and deficiency, the present invention provide a kind of side recycling lead from lead sponge
Method.The present invention is dehydrated using vacuum melting, and electrolyte and molten bullion can be made to detach in vacuum metling dehydration, upper layer
For electrolyte, lower layer is molten bullion.The invention is realized by the following technical scheme.
A method of recycling lead from lead sponge, specific steps include：
Step 1, by lead sponge vacuum degree be 0.03 ~ 0.07MPa, vacuum melting dehydration temperature be 350 ~ 400 DEG C of stirring bars
It is dehydrated under part, obtains the dehydration product that upper layer is electrolyte, lower layer is molten bullion, obtained after the layered separation of dehydration product thick
Lead melt；The time of vacuum melting dehydration is 25 ~ 35min/ tons；
Step 2 refines the molten bullion that step 1 obtains, and obtains lead bullion.
Lead sponge moisture content is 3 ~ 10wt% in the step 1.
It is 50 ~ 80r/min that mixing speed is dehydrated under step 1 stirring condition.
The vapor that vacuum melting is dehydrated in the step 1 will be condensed to obtain condensed water.
Step 2 refining process is that Crystallization Separation refining is carried out in Crystallization Separation device.
The Crystallization Separation device includes electric furnace body 1, trough outlet 2, helical axis 3, trough 4, flight 5, feed inlet
6, slot tail 7 and slot last row outlet 8, electric furnace body 1 is obliquely installed horizontal by 6 ~ 10 °, and electric furnace body 1 is divided into copper antimony richness from high to low
Ji Qu, stirred crystallization area, three pieces of lead bullion collecting region, copper antimony enrichment region are located at 4 position of trough of electric furnace body 1, and 4 end of trough is equipped with
Trough outlet 2；Stirred crystallization area is located at 1 middle section of electric furnace body, and 1 top of electric furnace body in stirred crystallization area is equipped with feed inlet 6；
Lead bullion collecting region is located at 1 slot tail of electric furnace body, 7 position, and 7 end of slot tail is equipped with slot last row and exports 8, and helical axis is inserted into 1 inside of electric furnace body
3, several flights 5 are uniformly provided on helical axis 3.
The copper antimony enrichment region temperature is 520 ~ 580 DEG C, and lead bullion collecting region temperature is 325 ~ 335 DEG C, and lead bullion collecting region prolongs
It 4 direction of trough and is gradually warming up to copper antimony enrichment region temperature highest, 3 mixing speed of helical axis is 2r/min or less.
The beneficial effects of the invention are as follows：
（1）The present invention carries out vacuum melting to lead sponge, and the water in lead sponge is easy to vaporization under vacuum and melting condition and generates
Vapor escapes melting system；Electrolyte density in lead sponge is smaller, above floats on the upper layer of melting system, and then obtains not
Aqueous and electrolyte molten bullion；Coordinate refining again, removes the copper ashes in lead bullion, obtain the higher lead bullion of purity.
（2）The efficiency that the present invention handles lead sponge reaches 45 ~ 55 ton days, the purity ＞ 99.9% of gained lead bullion.
Description of the drawings
Fig. 1 is present invention process flow chart；
Fig. 2 is continuous crystallisation machine structural schematic diagram of the present invention.
In figure：1- electric furnace bodies, 2- trough outlets, 3- helical axis, 4- troughs, 5- flights, 6- feed inlets, 7- slot tails,
8- slot last rows export.
Specific implementation mode
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
As shown in Figure 1, the method that should recycle lead from lead sponge, specific steps include：
Step 1, by 850kg lead sponges（Chemical composition such as table 1）It is 0.05MPa in vacuum degree, the temperature of vacuum melting dehydration is
360℃（Heating power is 20kW）Stirring condition（Dehydration mixing speed is 50r/min）Lower dehydration, obtain upper layer be electrolyte,
Lower layer is the dehydration product of molten bullion, and 790kg molten bullions are obtained after the layered separation of dehydration product（Molten bullion specifically at
Divide as shown in table 2）；The time of vacuum melting dehydration is 30min/ tons；The vapor that vacuum melting is dehydrated in step 1 will be into
Row condensation obtains condensed water；
Step 2 refines the molten bullion that step 1 obtains, and obtains lead bullion；Wherein refining process is to have brilliant point of change
Copper removal is refined from Crystallization Separation is carried out in device, as shown in Fig. 2, Crystallization Separation device includes electric furnace body 1, trough outlet 2, spiral shell
Spin axis 3, trough 4, flight 5, feed inlet 6, slot tail 7 and slot last row outlet 8, electric furnace body 1 is obliquely installed horizontal by 7 °, electricity
Furnace body 1 is divided into copper antimony enrichment region, stirred crystallization area, three pieces of lead bullion collecting region from high to low, and copper antimony enrichment region is located at electric furnace body 1
4 position of trough, 4 end of trough are equipped with trough outlet 2；Stirred crystallization area is located at 1 middle section of electric furnace body, stirred crystallization area
1 top of electric furnace body is equipped with feed inlet 6；Lead bullion collecting region is located at 1 slot tail of electric furnace body, 7 position, and 7 end of slot tail is exported equipped with slot last row
8, helical axis 3 is inserted into 1 inside of electric furnace body, and several flights 5 are uniformly provided on helical axis 3；Lead bullion collecting region temperature is 325 DEG C,
It is 550 DEG C to be gradually increased to copper antimony enrichment region maximum temperature along 4 direction of trough, and 3 mixing speed of helical axis is 1.8r/min, lead bullion
It is 475 DEG C of stirred crystallization areas that melt enters temperature by feed inlet 6, under 1.8r/min stirring conditions, in molten bullion
Copper floats, and lead density is larger sinks to continuous crystallisation trough tail bottom, obtains lead bullion（Lead bullion purity test result such as 3 institute of table
Show）, obtained lead bullion is sent to carrying out pouring into lead pig at cast.The content of lead is more than 99.9% in the lead pig of gained after testing,
The content of copper is less than 0.05%；Lead pig gross weight is 785kg.
The present embodiment is continuously handled 50 tons of lead sponge, and used time 25.4h, processing speed reaches 1.97 tons/h.
Embodiment 2
As shown in Figure 1, the method that should recycle lead from lead sponge, specific steps include：
Step 1, by 850kg lead sponges（Chemical composition such as table 1）It is 0.03MPa in vacuum degree, the temperature of vacuum melting dehydration is
400℃（Heating power is 20kW）Stirring condition（Dehydration mixing speed is 80r/min）Lower dehydration, obtain upper layer be electrolyte,
Lower layer is the dehydration product of molten bullion, and molten bullion is obtained after the layered separation of dehydration product（The specific ingredient of molten bullion is such as
Shown in table 2）；The time of vacuum melting dehydration is 28min/ tons；The vapor that vacuum melting is dehydrated in step 1 will carry out cold
It is solidifying to obtain condensed water；
Step 2 refines the molten bullion that step 1 obtains, and obtains lead bullion；Wherein refining process is in Crystallization Separation device
Middle progress Crystallization Separation refines copper removal, as shown in Fig. 2, Crystallization Separation device include electric furnace body 1, trough outlet 2, helical axis 3,
Trough 4, flight 5, feed inlet 6, slot tail 7 and slot last row outlet 8, electric furnace body 1 is obliquely installed horizontal by 9 °, electric furnace body 1
It is divided into copper antimony enrichment region, stirred crystallization area, three pieces of lead bullion collecting region from high to low, copper antimony enrichment region is located at the trough 4 of electric furnace body 1
Position, 4 end of trough are equipped with trough outlet 2；Stirred crystallization area is located at 1 middle section of electric furnace body, the electric furnace in stirred crystallization area
1 top of body is equipped with feed inlet 6；Lead bullion collecting region is located at 1 slot tail of electric furnace body, 7 position, and 7 end of slot tail is equipped with slot last row and exports 8, electricity
Helical axis 3 is inserted into 1 inside of furnace body, and several flights 5 are uniformly provided on helical axis 3；Lead bullion collecting region temperature is 325 DEG C, along
It is 580 DEG C that 4 direction of trough, which is gradually increased to copper antimony enrichment region maximum temperature, and 3 mixing speed of helical axis is 2.0r/min, molten bullion
It is 475 DEG C of stirred crystallization areas to enter temperature by feed inlet 6, under 2.0r/min stirring conditions, on the copper in molten bullion
It is floating, and lead density is larger sinks to continuous crystallisation trough tail bottom, obtains lead bullion（The results are shown in Table 3 for lead bullion purity test）,
Obtained lead bullion is sent to carrying out pouring into lead pig at cast.The content of lead is more than 99.9% in the lead pig of gained after testing, copper
Content is less than 0.05%.
The present embodiment is continuously handled 30 tons of lead sponge, and used time 13h, processing speed reaches 2.3 tons/h.
Embodiment 3
As shown in Figure 1, the method that should recycle lead from lead sponge, specific steps include：
Step 1, by 850kg lead sponges（Chemical composition such as table 1）It is 0.03MPa in vacuum degree, the temperature of vacuum melting dehydration is
380℃（Heating power is 20kW）Stirring condition（Dehydration mixing speed is 60r/min）Lower dehydration, obtain upper layer be electrolyte,
Lower layer is the dehydration product of molten bullion, and molten bullion is obtained after the layered separation of dehydration product（The specific ingredient of molten bullion is such as
Shown in table 2）；The time of vacuum melting dehydration is 30min/ tons；The vapor that vacuum melting is dehydrated in step 1 will carry out cold
It is solidifying to obtain condensed water；
Step 2 refines the molten bullion that step 1 obtains, and obtains lead bullion；Wherein refining process is in Crystallization Separation device
Middle progress Crystallization Separation refines copper removal, as shown in Fig. 2, Crystallization Separation device include electric furnace body 1, trough outlet 2, helical axis 3,
Trough 4, flight 5, feed inlet 6, slot tail 7 and slot last row outlet 8, electric furnace body 1 is obliquely installed horizontal by 8 °, electric furnace body 1
It is divided into copper antimony enrichment region, stirred crystallization area, three pieces of lead bullion collecting region from high to low, copper antimony enrichment region is located at the trough 4 of electric furnace body 1
Position, 4 end of trough are equipped with trough outlet 2；Stirred crystallization area is located at 1 middle section of electric furnace body, the electric furnace in stirred crystallization area
1 top of body is equipped with feed inlet 6；Lead bullion collecting region is located at 1 slot tail of electric furnace body, 7 position, and 7 end of slot tail is equipped with slot last row and exports 8, electricity
Helical axis 3 is inserted into 1 inside of furnace body, and several flights 5 are uniformly provided on helical axis 3；Lead bullion collecting region temperature is 325 DEG C, along
It is 580 DEG C that 4 direction of trough, which is gradually increased to copper antimony enrichment region maximum temperature, and 3 mixing speed of helical axis is 1.9r/min, molten bullion
It is 475 DEG C of stirred crystallization areas to enter temperature by feed inlet 6, under 1.9r/min stirring conditions, on the copper in molten bullion
It is floating, and lead density is larger sinks to continuous crystallisation trough tail bottom, obtains lead bullion（The results are shown in Table 3 for lead bullion purity test）,
Obtained lead bullion is sent to carrying out pouring into lead pig at cast.The content of lead is more than 99.9% in the lead pig of gained after testing, copper
Content is less than 0.05%.
The present embodiment is continuously handled 10 tons of lead sponge, and used time 4.76h, processing speed reaches 2.1 tons/h.
Embodiment 4
As shown in Figure 1, the method that should recycle lead from lead sponge, specific steps include：
Step 1, by 850kg lead sponges（Chemical composition such as table 1）It is 0.04MPa in vacuum degree, the temperature of vacuum melting dehydration is
400℃（Heating power is 20kW）Stirring condition（Dehydration mixing speed is 60r/min）Lower dehydration, obtain upper layer be electrolyte,
Lower layer is the dehydration product of molten bullion, and molten bullion is obtained after the layered separation of dehydration product（The specific ingredient of molten bullion is such as
Shown in table 2）；The time of vacuum melting dehydration is 35min/ tons；The vapor that vacuum melting is dehydrated in step 1 will carry out cold
It is solidifying to obtain condensed water；
Step 2 refines the molten bullion that step 1 obtains, and obtains lead bullion；Wherein refining process is in Crystallization Separation device
Middle progress Crystallization Separation refines copper removal, as shown in Fig. 2, Crystallization Separation device include electric furnace body 1, trough outlet 2, helical axis 3,
Trough 4, flight 5, feed inlet 6, slot tail 7 and slot last row outlet 8, electric furnace body 1 is obliquely installed horizontal by 8 °, electric furnace body 1
It is divided into copper antimony enrichment region, stirred crystallization area, three pieces of lead bullion collecting region from high to low, copper antimony enrichment region is located at the trough 4 of electric furnace body 1
Position, 4 end of trough are equipped with trough outlet 2；Stirred crystallization area is located at 1 middle section of electric furnace body, the electric furnace in stirred crystallization area
1 top of body is equipped with feed inlet 6；Lead bullion collecting region is located at 1 slot tail of electric furnace body, 7 position, and 7 end of slot tail is equipped with slot last row and exports 8, electricity
Helical axis 3 is inserted into 1 inside of furnace body, and several flights 5 are uniformly provided on helical axis 3；Lead bullion collecting region temperature is 327 DEG C, along
It is 580 DEG C that 4 direction of trough, which is gradually increased to copper antimony enrichment region maximum temperature, and 3 mixing speed of helical axis is 1.9r/min, molten bullion
It is 475 DEG C of stirred crystallization areas to enter temperature by feed inlet 6, under 1.9r/min stirring conditions, on the copper in molten bullion
It is floating, and lead density is larger sinks to continuous crystallisation trough tail bottom, obtains lead bullion（The results are shown in Table 3 for lead bullion purity test）,
Obtained lead bullion is sent to carrying out pouring into lead pig at cast.The content of lead is more than 99.9% in the lead pig of gained after testing, copper
Content is less than 0.05%.
The present embodiment is continuously handled 10 tons of lead sponge, and used time 4.63h, processing speed reaches 2.16 tons/h.
Comparative example 1
Use lead sponge same as Example 1.Remove moisture removal in such a way that compacting is dehydrated, gained molten bullion it is specific at
Analysis can be shown in Table 2；Using pyro-refining copper removal, refining temperature is 450 ~ 500 DEG C, and other parameters are conventional existing parameter.Institute
It obtains lead bullion purity test and the results are shown in Table 3.
Comparative example 1 handles 10 tons of lead sponge, and used time 60.5h, processing speed reaches 0.17 ton/h.
Comparative example 2
Use 2 identical lead sponge of embodiment.Moisture removal, the specific ingredient of gained molten bullion are removed in such a way that compacting is dehydrated
Analysis can be shown in Table 2；The temperature of pyro-refining copper removal is 550 DEG C, and other parameters are conventional existing parameter.Gained lead bullion purity test
It the results are shown in Table 3.
Comparative example 2 handles 10 tons of lead sponge, and used time 65h, processing speed reaches 0.15 ton/h.
1 embodiment of table, 1 ~ 4 lead sponge chemical composition（wt.%）
1 ~ 2 molten bullion ingredient of 2 embodiment 1 ~ 4 of table and comparative example（wt.%）
1 ~ 2 lead bullion purity test result of 3 embodiment 1 ~ 4 of table and comparative example
Molten bullion ingredient can be seen that from table 2 is dehydrated using vacuum melting, can carry out depth to the moisture in lead sponge
Removing, it is more preferable to the removal effect of water and electrolyte for traditional compacting dewatering process.
From table 3 it can be seen that the purity of lead bullion obtained by the embodiment of the present invention reaches 99.9% or more, the rate of recovery reach 99% with
On, relative to conventional method, the purity of lead bullion slightly rises, and the rate of recovery, which then has, to be significantly risen, and illustrates side provided by the invention
Method can carry out high efficiente callback to the lead in lead sponge.
By embodiment 1 ~ 4 and comparative example 1 ~ 2 it is found that method provided by the invention can fast and effectively remove lead sponge
In moisture and electrolyte, so that the production efficiency of lead sponge recycling lead is improved to 55 ton days, relative to conventional method, production effect
Rate improves nearly 13 times；Method provided by the invention can effectively solve the problems, such as dehydration and decopper(ing) in lead sponge, and technological process is short, if
It is standby simple, it is at low cost, it is applied widely, it can realize semicontinuous industrial production.
Embodiment 5
As shown in Figure 1, the method that should recycle lead from lead sponge, specific steps include：
Step 1, by 850kg lead sponges（Chemical composition is identical with lead sponge component in embodiment 4）It is in vacuum degree
The temperature of 0.07MPa, vacuum melting dehydration are 380 DEG C（Heating power is 20kW）Stirring condition（Dehydration mixing speed is 60r/
min）Lower dehydration obtains the dehydration product that upper layer is electrolyte, lower layer is molten bullion, is obtained after the layered separation of dehydration product
Molten bullion；The time of vacuum melting dehydration is 25min/ tons；The vapor that vacuum melting is dehydrated in step 1 will carry out cold
It is solidifying to obtain condensed water；
Step 2 refines the molten bullion that step 1 obtains, and obtains lead bullion；Wherein refining process is in Crystallization Separation device
Middle progress Crystallization Separation refines copper removal, as shown in Fig. 2, Crystallization Separation device include electric furnace body 1, trough outlet 2, helical axis 3,
Trough 4, flight 5, feed inlet 6, slot tail 7 and slot last row outlet 8, electric furnace body 1 is obliquely installed horizontal by 6 °, electric furnace body 1
It is divided into copper antimony enrichment region, stirred crystallization area, three pieces of lead bullion collecting region from high to low, copper antimony enrichment region is located at the trough 4 of electric furnace body 1
Position, 4 end of trough are equipped with trough outlet 2；Stirred crystallization area is located at 1 middle section of electric furnace body, the electric furnace in stirred crystallization area
1 top of body is equipped with feed inlet 6；Lead bullion collecting region is located at 1 slot tail of electric furnace body, 7 position, and 7 end of slot tail is equipped with slot last row and exports 8, electricity
Helical axis 3 is inserted into 1 inside of furnace body, and several flights 5 are uniformly provided on helical axis 3；Lead bullion collecting region temperature is 335 DEG C, along
It is 520 DEG C that 4 direction of trough, which is gradually increased to copper antimony enrichment region maximum temperature, and 3 mixing speed of helical axis is 1.9r/min, molten bullion
It is 500 DEG C of stirred crystallization areas to enter temperature by feed inlet 6, under 1.9r/min stirring conditions, on the copper in molten bullion
It is floating, and lead density is larger sinks to continuous crystallisation trough tail bottom, obtains lead bullion, obtained lead bullion is sent to pouring at cast
Form lead pig.The content of lead is more than 99.9% in the lead pig of gained after testing, and the content of copper is less than 0.05%.
Embodiment 6
As shown in Figure 1, the method that should recycle lead from lead sponge, specific steps include：
Step 1, by 850kg lead sponges（Chemical composition is identical with lead sponge component in embodiment 4）It is in vacuum degree
The temperature of 0.06MPa, vacuum melting dehydration are 350 DEG C（Heating power is 20kW）Stirring condition（Dehydration mixing speed is 60r/
min）Lower dehydration obtains the dehydration product that upper layer is electrolyte, lower layer is molten bullion, is obtained after the layered separation of dehydration product
Molten bullion；The time of vacuum melting dehydration is 35min/ tons；The vapor that vacuum melting is dehydrated in step 1 will carry out cold
It is solidifying to obtain condensed water；
Step 2 refines the molten bullion that step 1 obtains, and obtains lead bullion；Wherein refining process is in Crystallization Separation device
Middle progress Crystallization Separation refines copper removal, as shown in Fig. 2, Crystallization Separation device include electric furnace body 1, trough outlet 2, helical axis 3,
Trough 4, flight 5, feed inlet 6, slot tail 7 and slot last row outlet 8, electric furnace body 1 is obliquely installed horizontal by 10 °, electric furnace body 1
It is divided into copper antimony enrichment region, stirred crystallization area, three pieces of lead bullion collecting region from high to low, copper antimony enrichment region is located at the trough 4 of electric furnace body 1
Position, 4 end of trough are equipped with trough outlet 2；Stirred crystallization area is located at 1 middle section of electric furnace body, the electric furnace in stirred crystallization area
1 top of body is equipped with feed inlet 6；Lead bullion collecting region is located at 1 slot tail of electric furnace body, 7 position, and 7 end of slot tail is equipped with slot last row and exports 8, electricity
Helical axis 3 is inserted into 1 inside of furnace body, and several flights 5 are uniformly provided on helical axis 3；Lead bullion collecting region temperature is 335 DEG C, along
It is 520 DEG C that 4 direction of trough, which is gradually increased to copper antimony enrichment region maximum temperature, and 3 mixing speed of helical axis is 1.5r/min, molten bullion
It is 540 DEG C of stirred crystallization areas to enter temperature by feed inlet 6, under 1.5r/min stirring conditions, on the copper in molten bullion
It is floating, and lead density is larger sinks to continuous crystallisation trough tail bottom, obtains lead bullion, lead bullion will be obtained and sent to pouring into a mould at cast
At lead pig.The content of lead is more than 99.9% in the lead pig of gained after testing, and the content of copper is less than 0.05%.
The specific implementation mode of the present invention is explained in detail above in association with attached drawing, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (7)
1. a kind of method recycling lead from lead sponge, it is characterised in that specific steps include：
Step 1, by lead sponge vacuum degree be 0.03 ~ 0.07MPa, vacuum melting dehydration temperature be 350 ~ 400 DEG C of stirring bars
It is dehydrated under part, obtains the dehydration product that upper layer is electrolyte, lower layer is molten bullion, obtained after the layered separation of dehydration product thick
Lead melt；The time of vacuum melting dehydration is 25 ~ 35min/ tons；
Step 2 refines the molten bullion that step 1 obtains, and obtains lead bullion.
2. the method according to claim 1 for recycling lead from lead sponge, it is characterised in that：Lead sponge in the step 1
Moisture content is 3 ~ 10wt%.
3. the method according to claim 1 for recycling lead from lead sponge, it is characterised in that：Step 1 stirring condition
Lower dehydration mixing speed is 50 ~ 80r/min.
4. the method according to claim 1 for recycling lead from lead sponge, it is characterised in that：Vacuum is molten in the step 1
The vapor that refining dehydration obtains will be condensed to obtain condensed water.
5. the method according to claim 1 for recycling lead from lead sponge, it is characterised in that：Step 2 refining process
To carry out Crystallization Separation refining in Crystallization Separation device.
6. the method according to claim 5 for recycling lead from lead sponge, it is characterised in that：The Crystallization Separation device packet
Include electric furnace body（1）, trough outlet（2）, helical axis（3）, trough（4）, flight（5）, feed inlet（6）, slot tail（7）With slot tail
Outlet（8）, electric furnace body（1）It is obliquely installed horizontal by 6 ~ 10 °, electric furnace body（1）It is divided into copper antimony enrichment region from high to low, stirs
Three pieces of crystal region, lead bullion collecting region are mixed, copper antimony enrichment region is located at electric furnace body（1）Trough（4）Position, trough（4）End is equipped with
Trough outlet（2）；Stirred crystallization area is located at electric furnace body（1）Middle section, the electric furnace body in stirred crystallization area（1）Top be equipped with into
Material mouth（6）；Lead bullion collecting region is located at electric furnace body（1）Slot tail（7）Position, slot tail（7）End is exported equipped with slot last row（8）, electric furnace
Body（1）Helical axis is inserted into inside（3）, helical axis（3）On be uniformly provided with several flights（5）.
7. the method according to claim 6 for recycling lead from lead sponge, it is characterised in that：The copper antimony enrichment region temperature
It it is 520 ~ 580 DEG C, lead bullion collecting region temperature is 325 ~ 335 DEG C, and lead bullion collecting region is along trough（4）Direction is gradually warming up to copper antimony
Enrichment region temperature highest, helical axis（3）Mixing speed is 2r/min or less.
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| RU2399687C1 (en) * | 2009-03-03 | 2010-09-20 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский Государственный политехнический университет" (ГОУ "СПбГПУ") | Procedure for extracting silver from concentrated chloride solutions |
| CN104141152A (en) * | 2014-07-28 | 2014-11-12 | 蒙自矿冶有限责任公司 | Method for recycling tin from lead bullion |
| CN205710871U (en) * | 2016-07-13 | 2016-11-23 | 来宾华锡冶炼有限公司 | A kind of equipment from thick scolding tin enrichment silver metal |
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| CN1415785A (en) * | 2002-10-22 | 2003-05-07 | 郴州金旺实业有限公司 | Technique for electrolyzing slurry of fluosilicic acid in bismuth mine |
| RU2399687C1 (en) * | 2009-03-03 | 2010-09-20 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский Государственный политехнический университет" (ГОУ "СПбГПУ") | Procedure for extracting silver from concentrated chloride solutions |
| CN101570826A (en) * | 2009-06-08 | 2009-11-04 | 昆明鼎邦科技有限公司 | Method for multilevel vacuum distilling and separating tin-lead alloy |
| CN104141152A (en) * | 2014-07-28 | 2014-11-12 | 蒙自矿冶有限责任公司 | Method for recycling tin from lead bullion |
| CN205710871U (en) * | 2016-07-13 | 2016-11-23 | 来宾华锡冶炼有限公司 | A kind of equipment from thick scolding tin enrichment silver metal |
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