CN115232973B - Device for improving leaching rate of copper-zinc ash and improving method thereof - Google Patents
Device for improving leaching rate of copper-zinc ash and improving method thereof Download PDFInfo
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- CN115232973B CN115232973B CN202210890371.6A CN202210890371A CN115232973B CN 115232973 B CN115232973 B CN 115232973B CN 202210890371 A CN202210890371 A CN 202210890371A CN 115232973 B CN115232973 B CN 115232973B
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- gas burner
- natural gas
- rotary kiln
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- 238000002386 leaching Methods 0.000 title claims abstract description 45
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 23
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 130
- 239000003345 natural gas Substances 0.000 claims abstract description 65
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 239000004071 soot Substances 0.000 claims abstract description 8
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 8
- 239000011701 zinc Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000004537 pulping Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 71
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 28
- 239000002002 slurry Substances 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 claims description 3
- 229910000342 sodium bisulfate Inorganic materials 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 12
- 239000012535 impurity Substances 0.000 abstract description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052804 chromium Inorganic materials 0.000 abstract description 6
- 239000011651 chromium Substances 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 copper zinc metals Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/06—Sulfating roasting
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0002—Preliminary treatment
- C22B15/001—Preliminary treatment with modification of the copper constituent
- C22B15/0013—Preliminary treatment with modification of the copper constituent by roasting
- C22B15/0017—Sulfating or sulfiding roasting
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with acids or salts thereof
- C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of copper-zinc soot leaching technology, and discloses a device and a method for improving the leaching rate of copper-zinc soot, wherein the method comprises the steps of batching, roasting and pulping leaching; b. adjusting the heat supply of the natural gas burner, and ensuring that the furnace temperature of the feeding end of the rotary kiln is in the range of 80-100 ℃ and the furnace temperature of the high-temperature zone is in the range of 550-600 ℃; c. the rotating speed of the rotary kiln is regulated, so that the material is ensured to stay in the rotary kiln for 60-90 min. According to the device and the method for improving the leaching rate of the copper-zinc ash, for the arrangement of the copper-zinc leaching treatment flow, the acidified copper-zinc ash is baked by utilizing the high-temperature rotary kiln, so that the leaching rate of copper and zinc in the copper-zinc ash can be effectively improved, the selectivity of impurities such as chromium and iron is high, and the leaching purity of the copper-zinc is high.
Description
Technical Field
The invention relates to the technical field of copper-zinc ash leaching processes, in particular to a device and a method for improving the leaching rate of copper-zinc ash.
Background
In recent years, with the enhancement of recycling economy and national environmental protection policy, metal resource regeneration is also becoming more important, wherein copper is widely used as an important metal material in various industries, and a large amount of waste water containing heavy metals is generated in the production and smelting process, in order to extract valuable metal components contained in the waste water, a leaching method is often adopted in the prior art to extract copper zinc metals in waste water sludge, but the conventional acid leaching treatment has lower leaching efficiency on copper zinc and lower selectivity on impurities, particularly on chromium, iron and other impurities, and when the conventional sulfuric acid leaching treatment is adopted, the leaching solution contains a large amount of chromium, iron and other impurities, so that the leaching effect on copper zinc is poor, and the stability and reliability are lower.
Therefore, a method for improving the leaching rate of copper and zinc is needed to solve the problems of low leaching rate and poor effect of conventional acid leaching treatment on copper and zinc.
Disclosure of Invention
The invention provides a device and a method for improving the leaching rate of copper-zinc ash, which have the advantages of effectively improving the leaching rate of copper-zinc, having higher selectivity to impurities, and having higher leaching purity, stability and reliability to copper-zinc, and solving the problems that the conventional acid leaching treatment has lower leaching efficiency to copper-zinc, and has lower selectivity to impurities, particularly to impurities such as chromium, iron and the like, and when the conventional sulfuric acid leaching treatment is adopted, the leaching solution contains a large amount of impurities such as chromium, iron and the like, so that the leaching effect to copper-zinc is poorer, and the stability and reliability are lower.
The invention provides the following technical scheme: the device for improving the leaching rate of the copper zinc soot comprises a rotary kiln, wherein a natural gas burner is arranged in the rotary kiln, the natural gas burner comprises a gas burner outer shell, one side of the outer part of the gas burner outer shell is fixedly provided with an electronic igniter, the inner part of the gas burner outer shell is connected with a movable valve body through constant-pressure spring transmission, the middle part of the inner cavity of the gas burner outer shell is fixedly provided with a fixed block, the inner cavity of the gas burner outer shell is divided into a first cavity and a second cavity by the fixed block, the inner wall of the first cavity is of a conical structure, and a communication hole I is formed in the inner part of the gas burner outer shell and communicated with the first cavity and the second cavity on the gas burner outer shell through the communication hole I;
The movable valve body comprises a valve core movably sleeved in the first cavity, an air guide pipeline is fixedly arranged on the right side of the inner portion of the valve core, the middle portion of the outer surface of the air guide pipeline is movably sleeved with the inner wall of the fixed block, a flow hole II is formed in the valve core, the air guide pipeline is communicated with the outer portion of the valve core through the flow hole II, a movable clamping plate is fixedly sleeved on the right side of the outer surface of the air guide pipeline, the outer surface of the movable clamping plate is in contact with the inner wall of the second cavity, and a connecting pipe orifice is arranged in the movable clamping plate.
Preferably, the inner wall of the first cavity on the outer shell of the gas burner and the outer surface of the valve core are in a completely attached state in an initial state.
Preferably, a first heat conducting rod is fixedly arranged at one end of the inner part of the valve core, one end of the first heat conducting rod extends to the middle part of the inner cavity of the air guide pipeline and is dispersed radially to extend to the outer part of the inner part of the air guide pipeline, a second heat conducting rod extending to the outer part of the valve core is fixedly arranged at the other end of the inner part of the valve core, and the end surfaces of the first heat conducting rod and the second heat conducting rod are respectively contacted with a memory fuse body fixedly arranged in the inner part of the valve core.
Preferably, the fusing temperature of the memory fuse body is controlled within the range of 30 ℃ to 50 ℃ below the natural gas ignition temperature.
A method for improving the leaching rate of copper zinc ash, which comprises the following treatment processes:
s1, proportioning: mixing the ash containing copper and zinc with sulfuric acid solution, and uniformly mixing the ash and the sulfuric acid solution in a stirrer according to the difference of ash components and the ratio of 1:0.04-0.12;
s2, roasting:
a. Uniformly conveying the mixed materials into a rotary kiln through a feeder;
b. adjusting the heat supply of the natural gas burner, and ensuring that the furnace temperature of the feeding end of the rotary kiln is in the range of 80-100 ℃ and the furnace temperature of the high-temperature zone is in the range of 550-600 ℃;
c. the rotating speed of the rotary kiln is regulated, so that the material is ensured to stay in the rotary kiln for 60-90 min;
s3, pulping and leaching:
a. Adding water into the baked clinker according to the solid-to-liquid ratio of 1:3-4 to prepare slurry, and controlling the granularity of clinker on the slurry to be below 100 meshes through a roller mill;
b. regulating pH value of the slurry and controlling the pH value within the range of 1-1.5;
c. The slurry is mechanically stirred for 90-120 min, and the temperature of the slurry is reduced to a natural temperature (50-60 ℃), so that valuable metal components in the copper zinc ash can be leached out efficiently.
Preferably, the sulfuric acid solution can be one or a mixture of more than two of sodium sulfate, sodium bisulfate, ferric sulfate, ammonium bisulfate and sulfuric acid.
Preferably, the adjusting the heating size of the natural gas burner in S2 mainly includes the following three states:
Under normal state, natural gas enters the natural gas burner through a gas guide pipeline, and impacts the inner wall of the first cavity under the guiding action of the circulation hole II, so that the outer shell of the gas burner is forced to move leftwards and compress a constant-pressure spring in transmission connection between the outer shell of the gas burner and the movable valve body, and meanwhile, under the condition of high flow velocity and low pressure intensity, air in the second cavity on the outer shell of the gas burner is automatically sucked and mixed through the circulation hole I, and mixed gas of the natural gas and the air is ignited under the action of the electronic igniter, so that the rotary kiln is heated;
When the furnace temperature of the rotary kiln is required to be reduced, the delivery quantity of natural gas in the gas guide pipeline is reduced, the impact force generated by the gas guide pipeline on the first cavity on the outer shell of the gas burner is reduced, the outer shell of the gas burner is driven to move to the right side under the elastic force of the constant-pressure spring, the gap between the inner wall of the first cavity and the outer surface of the valve core is reduced, but the circulation speed of the natural gas in unit time is kept unchanged, and meanwhile, the gap between the inner wall of the first cavity and the outer surface of the valve core is reduced, so that the air quantity sucked through the flow hole I is changed, the flame size of the natural gas burner is reduced, the furnace temperature of the rotary kiln is reduced, and the higher combustion rate of the natural gas on the rotary kiln can be ensured;
When the furnace temperature of the rotary kiln is required to be reduced, the delivery quantity of natural gas in the gas guide pipeline is increased, the impact force generated by the natural gas on the first cavity on the outer shell of the gas burner is increased, the constant-pressure spring is further compressed to drive the outer shell of the gas burner to move leftwards, so that the gap between the inner wall of the first cavity and the outer surface of the valve core is increased, but the circulation speed of the natural gas in unit time is kept unchanged, and meanwhile, the gap between the inner wall of the first cavity and the outer surface of the valve core is increased, so that the air quantity sucked through the circulation hole I is changed, and further, the flame size of the natural gas burner is increased, the furnace temperature of the rotary kiln is improved, and meanwhile, the higher combustion rate of the natural gas on the rotary kiln can be ensured.
The invention has the following beneficial effects:
1. According to the device and the method for improving the leaching rate of the copper-zinc ash, for the arrangement of the copper-zinc leaching treatment flow, the acidified copper-zinc ash is baked by utilizing the high-temperature rotary kiln, compared with a conventional acid leaching treatment method, the leaching rate of copper and zinc in the copper-zinc ash can be effectively improved, the selectivity of impurities such as chromium and iron is higher, the leaching purity of the copper-zinc is higher, the phenomenon of excessive pollution to leached copper and zinc is avoided, and the reliability and the applicability are higher.
2. According to the device for improving the leaching rate of the copper zinc soot and the improving method thereof, when the supply amount of the natural gas is changed, the suction amount of the natural gas to the air can be automatically adjusted under the condition of keeping the flow rate of the natural gas unchanged, compared with the existing natural gas burner, no additional power output equipment or monitoring system is needed to adjust the conveying control of the natural gas burner to the air flow, the structure is simple, the controllability is higher, and the service life of the natural gas burner under the condition of long-time high temperature is effectively prolonged.
3. According to the device for improving the leaching rate of the copper-zinc soot and the improving method thereof, the first heat conducting rod, the second heat conducting rod and the memory fuse body are arranged, so that the flame in the natural gas burner can be effectively utilized to preheat the fuel gas and air, the combustion rate of the fuel gas is improved, and when the first heat conducting rod is utilized to preheat the fuel gas passing through the natural gas burner, the phenomenon of burning explosion caused by overhigh temperature is avoided, and the stability and the reliability are high.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the outer casing of the gas burner of the present invention;
FIG. 3 is a schematic view of the structure of the movable valve body of the present invention;
fig. 4 is a front view of the structure of the present invention.
In the figure: 1. a gas burner outer case; 2. an electronic igniter; 3. a movable valve body; 4. a constant pressure spring; 5.a first heat conduction rod; 6. a second heat conduction rod; 7. a memory fuse; 8. a fixed block; 9. a first cavity; 10. a second cavity; 11. a flow hole I; 12. a valve core; 13. an air guide pipeline; 14. a flow hole II; 15. a movable clamping plate; 16. and connecting the pipe orifice.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The device comprises a rotary kiln for acidizing and baking, wherein a natural gas burner for adjusting the temperature of a kiln chamber is arranged in the rotary kiln, as shown in fig. 1, the natural gas burner comprises a gas burner outer shell 1, one side of the outer part of the gas burner outer shell 1 is fixedly provided with an electronic igniter 2, the inner part of the gas burner outer shell 1 is in transmission connection with a movable valve body 3 through a constant-pressure spring 4, as shown in fig. 2, the middle part of the inner cavity of the gas burner outer shell 1 is fixedly provided with a fixed block 8, the fixed block 8 divides the inner cavity of the gas burner outer shell 1 into a first cavity 9 and a second cavity 10, the inner wall of the first cavity 9 is of a conical structure, a plurality of groups of circulation holes I11 which are arranged in an annular array are formed in the inner part of the gas burner outer shell 1, and the first cavity 9 and the second cavity 10 are communicated with each other through the circulation holes I11;
As shown in fig. 3-4, the movable valve body 3 comprises a valve core 12 movably sleeved in a first cavity 9 on the gas burner outer shell 1, an air guide pipeline 13 is fixedly installed on the right side of the inner part of the valve core 12, the middle part of the outer surface of the air guide pipeline 13 is movably sleeved with the inner wall of a fixed block 8 on the gas burner outer shell 1, one end of the air guide pipeline 13 is communicated with an external natural gas pipeline, a plurality of groups of circulation holes II 14 which are arranged in an annular array are arranged in the valve core 12 and are communicated with the air guide pipeline 13 and the outer part of the valve core 12 through the circulation holes II 14, a movable clamping plate 15 is fixedly sleeved on the right side of the outer surface of the air guide pipeline 13, the outer surface of the movable clamping plate 15 is in contact with the inner wall of a second cavity 10 on the gas burner outer shell 1, a connecting pipe orifice 16 is arranged in the inner part of the movable clamping plate 15 so as to be communicated with the second cavity 10, one end of the connecting pipe orifice 16 is communicated with an external gas pump, and the air pressure in the inner cavity of the second cavity 10 can be kept.
In this technical scheme, the inner wall of first cavity 9 on the gas nozzle shell body 1 is in the state of laminating completely with the surface of case 12 under initial condition (when not letting in the gas to gas nozzle shell body 1 promptly) to effectively prevent the dust in this gyration jiao and other gases from entering into this natural gas nozzle and causing the problem of jam.
As shown in fig. 3, in this technical solution, a first heat conducting rod 5 is fixedly mounted at one end inside a valve core 12, one end of the first heat conducting rod 5 extends to the middle part of an inner cavity of an air duct 13 and radially spreads to the outside, a second heat conducting rod 6 extending to the outside is fixedly mounted at the other end inside the valve core 12, and end surfaces of the first heat conducting rod 5 and the second heat conducting rod 6 are respectively contacted with a memory fuse 7 fixedly mounted inside the valve core 12, so that gas and air on the valve core can be preheated by flame in the natural gas burner to improve the combustion rate of the gas.
In the technical scheme, the fusing temperature of the memory fuse 7 is controlled within the range of 30-50 ℃ below the natural gas ignition temperature, and when the first heat conducting rod 5 is utilized to preheat the fuel gas passing through the natural gas burner, the phenomenon of explosion caused by overhigh temperature is avoided.
The device for improving the leaching rate of the copper zinc ash and the improving method thereof are characterized by comprising the following processing flows:
s1, proportioning: mixing the ash containing copper and zinc with sulfuric acid solution, and uniformly mixing the ash and the sulfuric acid solution in a stirrer according to the difference of ash components and the ratio of 1:0.04-0.12;
s2, roasting:
a. Uniformly conveying the mixed materials into a rotary kiln through a feeder;
b. adjusting the heat supply of the natural gas burner, and ensuring that the furnace temperature of the feeding end of the rotary kiln is in the range of 80-100 ℃ and the furnace temperature of the high-temperature zone is in the range of 550-600 ℃;
c. the rotating speed of the rotary kiln is regulated, so that the material is ensured to stay in the rotary kiln for 60-90 min;
s3, pulping and leaching:
a. Adding water into the baked clinker according to the solid-to-liquid ratio of 1:3-4 to prepare slurry, and controlling the granularity of clinker on the slurry to be below 100 meshes through a roller mill;
b. regulating pH value of the slurry and controlling the pH value within the range of 1-1.5;
c. The slurry is mechanically stirred for 90-120 min, and the temperature of the slurry is reduced to a natural temperature (50-60 ℃), so that valuable metal components in the copper zinc ash can be leached out efficiently.
In the technical scheme, the sulfuric acid solution can be one or a mixture of more than two of sodium sulfate, sodium bisulfate, ferric sulfate, ammonium bisulfate and sulfuric acid.
In the technical scheme, the heating size of the natural gas burner is adjusted in the step S2, and the natural gas burner mainly comprises the following three states:
Under normal state, natural gas enters the natural gas burner through the gas guide pipeline 13, and impacts the inner wall of the first cavity 9 under the guiding action of the circulation hole II 14, so that the gas burner outer shell 1 is forced to move leftwards and compress the constant-pressure spring 4 in transmission connection between the gas burner outer shell 1 and the movable valve body 3, and simultaneously, under the condition of high flow velocity and small pressure intensity, air in the second cavity 10 on the gas burner outer shell 1 is automatically sucked and mixed through the circulation hole I11, and mixed gas of the natural gas and the air is ignited under the action of the electronic igniter 2, so as to heat the rotary kiln;
When the furnace temperature of the rotary kiln needs to be reduced, the delivery amount of natural gas in the gas guide pipeline 13 is reduced, and at the same time, the impact force generated by the gas guide pipeline on the first cavity 9 on the gas burner outer shell 1 is reduced, so that the gas burner outer shell 1 is driven to move to the right side under the action of the elastic force of the constant-pressure spring 4, the gap between the inner wall of the first cavity 9 and the outer surface of the valve core 12 is reduced, but the circulation speed of the natural gas in unit time is kept unchanged, and at the same time, the gap between the inner wall of the first cavity 9 and the outer surface of the valve core 12 is reduced, so that the air sucked through the flow hole I11 is changed, and the flame size of the natural gas burner is reduced, the furnace temperature of the rotary kiln is reduced, and at the same time, the higher combustion rate of the natural gas on the rotary kiln can be ensured;
When the furnace temperature of the rotary kiln needs to be reduced, the delivery amount of the natural gas in the gas guide pipeline 13 is increased, the impact force generated by the natural gas on the first cavity 9 on the gas burner outer shell 1 is increased, the constant-pressure spring 4 is further compressed to drive the gas burner outer shell 1 to move leftwards, so that the gap between the inner wall of the first cavity 9 and the outer surface of the valve core 12 is increased, but the circulation speed of the natural gas in unit time is kept unchanged, and meanwhile, the gap between the inner wall of the first cavity 9 and the outer surface of the valve core 12 is increased, so that the air quantity sucked through the circulation hole I11 is changed, and the flame size of the natural gas burner is increased, so that the high combustion rate of the natural gas on the rotary kiln can be ensured while the furnace temperature of the rotary kiln is increased.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a device for improving copper zinc cigarette ash leaching rate, includes gyration cellar for storing things, the inside of gyration cellar for storing things is equipped with the natural gas nozzle, the natural gas nozzle includes gas nozzle shell body (1), one side fixed mounting of gas nozzle shell body (1) outside has electron lighter (2), and the inside of gas nozzle shell body (1) is connected with movable valve body (3) through constant voltage spring (4) transmission, its characterized in that:
The middle part of the inner cavity of the gas burner outer shell (1) is fixedly provided with a fixed block (8), the fixed block (8) divides the inner cavity of the gas burner outer shell (1) into a first cavity (9) and a second cavity (10), the inner wall of the first cavity (9) is of a conical structure, the inside of the gas burner outer shell (1) is provided with a flow hole I (11), and the first cavity (9) and the second cavity (10) on the gas burner outer shell (1) are communicated through the flow hole I (11);
The movable valve body (3) comprises a valve core (12) movably sleeved in a first cavity (9), an air guide pipeline (13) is fixedly installed on the right side of the inner portion of the valve core (12), the middle portion of the outer surface of the air guide pipeline (13) is movably sleeved with the inner wall of the fixed block (8), a flow hole II (14) is formed in the valve core (12), the air guide pipeline (13) and the outer portion of the valve core (12) are communicated through the flow hole II (14), a movable clamping plate (15) is fixedly sleeved on the right side of the outer surface of the air guide pipeline (13), the outer surface of the movable clamping plate (15) is in contact with the inner wall of the second cavity (10), and a connecting pipe orifice (16) is arranged in the movable clamping plate (15).
2. The device for improving the leaching rate of copper zinc soot according to claim 1, wherein: the inner wall of the first cavity (9) on the gas burner outer shell (1) and the outer surface of the valve core (12) are in a completely attached state in an initial state.
3. A device for increasing the leaching rate of copper zinc soot according to claim 2, wherein: a first heat conducting rod (5) is fixedly arranged at one end of the inner part of the valve core (12), one end of the first heat conducting rod (5) extends to the middle part of the inner cavity of the air guide pipeline (13) and radially spreads out to extend to the outer part of the inner cavity, a second heat conducting rod (6) extending to the outer part of the other end of the inner part of the valve core (12) is fixedly arranged at the other end of the inner part of the valve core (12), and the end faces of the first heat conducting rod (5) and the second heat conducting rod (6) are respectively contacted with a memory fuse body (7) fixedly arranged in the inner part of the valve core (12).
4. A device for increasing the leaching rate of copper zinc soot according to claim 3, wherein: the fusing temperature of the memory fuse body (7) is controlled to be within the range of 30-50 ℃ below the natural gas ignition temperature.
5. The method of claim 4, comprising the steps of:
s1, proportioning: mixing the ash containing copper and zinc with sulfuric acid solution, and uniformly mixing the ash and the sulfuric acid solution in a stirrer according to the difference of ash components and the ratio of 1:0.04-0.12;
s2, roasting:
a. Uniformly conveying the mixed materials into a rotary kiln through a feeder;
b. adjusting the heat supply of the natural gas burner, and ensuring that the furnace temperature of the feeding end of the rotary kiln is in the range of 80-100 ℃ and the furnace temperature of the high-temperature zone is in the range of 550-600 ℃;
c. the rotating speed of the rotary kiln is regulated, so that the material is ensured to stay in the rotary kiln for 60-90 min;
s3, pulping and leaching:
a. Adding water into the baked clinker according to the solid-to-liquid ratio of 1:3-4 to prepare slurry, and controlling the granularity of clinker on the slurry to be below 100 meshes through a roller mill;
b. regulating pH value of the slurry and controlling the pH value within the range of 1-1.5;
c. mechanically stirring the slurry for 90-120 min, and reducing the temperature of the slurry to a natural temperature, so that valuable metal components in the copper zinc ash can be leached out with high efficiency;
wherein the sulfuric acid solution is one or more than two of sodium sulfate, sodium bisulfate, ferric sulfate, ammonium bisulfate and sulfuric acid;
And in the step S2, the heating size of the natural gas burner is regulated, and the natural gas burner mainly comprises the following three states:
under normal state, natural gas enters the natural gas burner through the gas guide pipeline (13), and impacts the inner wall of the first cavity (9) under the guiding action of the circulation hole II (14), so that the gas burner outer shell (1) is forced to move leftwards and compress a constant-pressure spring (4) in transmission connection between the gas burner outer shell (1) and the movable valve body (3), and meanwhile, under the condition of high flow speed and small pressure, air in the second cavity (10) on the gas burner outer shell (1) is automatically sucked and mixed through the circulation hole I (11), and mixed gas of the natural gas and the air is ignited under the action of the electronic igniter (2) to heat the rotary kiln;
When the furnace temperature of the rotary kiln is required to be reduced, the delivery quantity of natural gas in the gas guide pipeline (13) is reduced, and at the same time, the impact force generated by the gas guide pipeline on the first cavity (9) on the gas burner outer shell (1) is reduced, so that the gas burner outer shell (1) is driven to move to the right side under the elastic force of the constant-pressure spring (4), the gap between the inner wall of the first cavity (9) and the outer surface of the valve core (12) is reduced, but the natural gas circulation speed in unit time is kept unchanged, and at the same time, the gap between the inner wall of the first cavity (9) and the outer surface of the valve core (12) is reduced, so that the air quantity sucked through the flow hole I (11) is changed, and the flame size of the natural gas burner is reduced, and the furnace temperature of the rotary kiln is reduced, and meanwhile, the higher combustion rate of the natural gas on the rotary kiln can be ensured;
When the furnace temperature of the rotary kiln is required to be raised, the delivery quantity of natural gas in the gas guide pipeline (13) is increased, the impact force generated by the gas guide pipeline on the first cavity (9) on the gas burner outer shell (1) is increased, the constant-pressure spring (4) is further compressed to drive the gas burner outer shell (1) to move leftwards, so that the gap between the inner wall of the first cavity (9) and the outer surface of the valve core (12) is increased, but the circulation speed of the natural gas in unit time is kept unchanged, and meanwhile, the gap between the inner wall of the first cavity (9) and the outer surface of the valve core (12) is increased, so that the air quantity sucked through the flow hole I (11) is changed, and further the flame size of the natural gas burner is increased, the furnace temperature of the rotary kiln is raised, and the higher combustion rate of the natural gas on the rotary kiln can be ensured.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04285136A (en) * | 1991-03-13 | 1992-10-09 | Sumitomo Metal Mining Co Ltd | Method for recovering lead and zinc from dust leaching residue of copper converter |
| JP2005326070A (en) * | 2004-05-13 | 2005-11-24 | Jfe Mineral Co Ltd | Material baking device |
| CN203785423U (en) * | 2014-04-18 | 2014-08-20 | 长沙有色冶金设计研究院有限公司 | Calcination rotary kiln |
| CN205223319U (en) * | 2015-11-17 | 2016-05-11 | 鞍钢股份有限公司 | Simulation experiment device for dual-purpose roasting process of pellet |
| CN106277855A (en) * | 2015-05-29 | 2017-01-04 | 宝山钢铁股份有限公司 | Formation rings in a kiln control method during KVS Active Lime Rotary Kiln coal powder injection |
| CN109735700A (en) * | 2019-03-13 | 2019-05-10 | 安徽工业大学 | A kind of method that microwave reducing roasting-sulfuric acid leaching recycles copper and zinc deposit in Bellamya aeruginosa |
| CN111304442A (en) * | 2019-12-15 | 2020-06-19 | 徐州博纳环保科技有限公司 | Method for removing F, Cl in secondary zinc oxide soot and preparing pure electrolyte |
| CN111411234A (en) * | 2020-04-15 | 2020-07-14 | 中国恩菲工程技术有限公司 | Jet smelting electrothermal reduction furnace and method for smelting zinc-containing material |
| CN111733330A (en) * | 2020-05-19 | 2020-10-02 | 北京科技大学 | Method for enriching and recovering zinc by using rotary kiln |
| CN111895778A (en) * | 2020-07-20 | 2020-11-06 | 湖南博一环保科技有限公司 | Method and device for reducing ring formation in pyrogenic process treatment of zinc-containing dust and sludge |
| CN112301213A (en) * | 2020-11-03 | 2021-02-02 | 内蒙古景蕾实业有限公司 | Manganese ore roasting rotary kiln system |
-
2022
- 2022-07-27 CN CN202210890371.6A patent/CN115232973B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04285136A (en) * | 1991-03-13 | 1992-10-09 | Sumitomo Metal Mining Co Ltd | Method for recovering lead and zinc from dust leaching residue of copper converter |
| JP2005326070A (en) * | 2004-05-13 | 2005-11-24 | Jfe Mineral Co Ltd | Material baking device |
| CN203785423U (en) * | 2014-04-18 | 2014-08-20 | 长沙有色冶金设计研究院有限公司 | Calcination rotary kiln |
| CN106277855A (en) * | 2015-05-29 | 2017-01-04 | 宝山钢铁股份有限公司 | Formation rings in a kiln control method during KVS Active Lime Rotary Kiln coal powder injection |
| CN205223319U (en) * | 2015-11-17 | 2016-05-11 | 鞍钢股份有限公司 | Simulation experiment device for dual-purpose roasting process of pellet |
| CN109735700A (en) * | 2019-03-13 | 2019-05-10 | 安徽工业大学 | A kind of method that microwave reducing roasting-sulfuric acid leaching recycles copper and zinc deposit in Bellamya aeruginosa |
| CN111304442A (en) * | 2019-12-15 | 2020-06-19 | 徐州博纳环保科技有限公司 | Method for removing F, Cl in secondary zinc oxide soot and preparing pure electrolyte |
| CN111411234A (en) * | 2020-04-15 | 2020-07-14 | 中国恩菲工程技术有限公司 | Jet smelting electrothermal reduction furnace and method for smelting zinc-containing material |
| CN111733330A (en) * | 2020-05-19 | 2020-10-02 | 北京科技大学 | Method for enriching and recovering zinc by using rotary kiln |
| CN111895778A (en) * | 2020-07-20 | 2020-11-06 | 湖南博一环保科技有限公司 | Method and device for reducing ring formation in pyrogenic process treatment of zinc-containing dust and sludge |
| CN112301213A (en) * | 2020-11-03 | 2021-02-02 | 内蒙古景蕾实业有限公司 | Manganese ore roasting rotary kiln system |
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