CN210560649U - Heavy metal solid waste high-efficiency treatment furnace - Google Patents
Heavy metal solid waste high-efficiency treatment furnace Download PDFInfo
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- CN210560649U CN210560649U CN201921140258.6U CN201921140258U CN210560649U CN 210560649 U CN210560649 U CN 210560649U CN 201921140258 U CN201921140258 U CN 201921140258U CN 210560649 U CN210560649 U CN 210560649U
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Abstract
The utility model discloses a heavy metal solid waste high-efficiency treatment furnace, which is internally provided with a smelting zone, a reduction zone and a clarification and separation zone, wherein the hearth of the clarification and separation zone has deeper depth; submerged flow jet burners horizontally inserted into the slag layer are symmetrically arranged on two sides of the smelting zone-melting tank; the reduction zone is provided with a plurality of reduction spray guns which are vertically inserted into the melt from the top of the furnace body and the insertion depth of which is adjustable; the reaction atmosphere is completely separated from the smelting zone and the reduction zone by a partition wall; the material is continuously added into the smelting zone from a charging hole, oxygen-enriched air and fuel are sprayed from a primary air port of the smelting zone to complete the processes of material melting, sulfate decomposition and desulfurization, slag formation and partial metal reduction, and the melt flows into the reduction zone from a channel below the partition wall; the reduction spray gun sprays pulverized coal into the melt, so that the heavy metal oxide in the melt is reduced into metal which enters a metal phase, the melt flows into the clarification separation zone to form obvious phase interfaces which are respectively discharged, and the harmless treatment and resource comprehensive recovery of the heavy metal solid waste are completed in the treatment furnace.
Description
Technical Field
The utility model belongs to environmental protection and resource cyclic utilization field specifically are a heavy metal is useless high-efficient processing stove admittedly.
Background
Solid wastes such as waste slag, smoke dust and sludge from non-ferrous metal smelting, and electroplating sludge and pickling sludge from metal surface treatment industry, wherein heavy metal ions or unstable compounds such as copper, lead, zinc, nickel, cobalt, tin and antimony are considered as dangerous solid wastes.
For a long time, the solid wastes go to the eight doors of the five flowers, some are disposed on the spot, some are stockpiled for a long time, some are buried, and some are transferred across provinces. Generally, solid wastes with high valuable metal content and low danger are treated on site, for example, the leaching residue of the conventional wet zinc smelting contains 20% of zinc, and the zinc and the indium in the leaching residue are recovered by adopting a rotary kiln. Dangerous solid wastes without recycling value are generally stockpiled or buried, such as jarosite slag, goethite slag, acid washing slag of metal surface treatment and the like of zinc hydrometallurgy. Hazardous waste with high recovery value and high risk is transported across regions and transferred for disposal, such as arsenic-containing smoke dust in copper smelting, high-arsenic anode mud, electroplating sludge, wastewater treatment sludge and the like.
In 2018, several wet-process zinc smelting methods are punished by the Ministry of environmental protection to cause shut-down and maintenance due to waste residue stockpiling. Some steel plants and electroplating plants are also penalized by the fact that pickling sludge and electroplating sludge are not treated in time. The national ministry of environmental protection supervises and oversees groups require these enterprises to take corrective measures to thoroughly solve the problem and allow the recovery of production.
The destination of the trans-provincial transferring of the hazardous wastes is mainly concentrated in the places of Hunan, Jiangxi and the like, generally brick making or briquetting is adopted, the bricks and coke are added into a small blast furnace for smelting, valuable metals in the bricks are recycled, economic benefits are obtained, and waste residues are produced or are stockpiled or buried. At present, the environmental protection policy is more and more strict, the trans-regional transfer of dangerous solid wastes is forbidden, and the harmless treatment must be carried out on site. Since the equipment and the process are difficult to meet the requirement of environmental protection and the degree of mechanization and automation is low, the small blast furnace is already listed as obsolete equipment to be used in many places.
Some enterprises at present try to treat solid waste by using an oxygen-enriched side-blown converter, and two problems mainly exist:
firstly, hardly realize simultaneously that the material melts, the sulphate decomposes desulfurization, slagging and whole metal reduction overall process in a stove, often the reduction is not thorough, and the clarification is incomplete, leads to the sediment to contain the metal very high, and the metal recovery rate is lower. For the zinc-containing solid waste treatment, two furnaces are adopted, one side blowing furnace is added with one fuming furnace, the side blowing furnace is used for melting decomposition, desulfurization and slag formation, and the fuming furnace is used for reduction fuming. If the solid waste contains other metals, two side blowing furnaces are needed, one furnace is used for melting decomposition, desulfurization and slagging, and the other furnace is used for reduction.
Secondly, a large amount of flux is required to be added for slagging in the smelting process, so that the material processing amount is increased, the energy consumption is increased, the metal taken away is increased, and the metal recovery rate is reduced.
For rectangular bath furnaces, the burners or nozzles are generally fixedly mounted on both sides of the furnace body, while for circular furnaces, the burners or nozzles are generally fixedly mounted around the furnace body at a height in the middle and lower part of the slag layer, about 200-300mm above the interface between the metal and the slag. Oxygen-enriched air, fuel or reductant is generally injected horizontally into the slag layer of the melt where it is combusted and agitated.
However, the applicant has verified through experiments that the above installation method of the burner has the following two problems:
firstly, the melt below the burner is relatively static, so that the mass and heat transfer efficiency of the melt below is very low, the heat of the metal phase is mainly transferred by downward movement of liquid metal generated by reaction and heat conduction of the melt, and the metal generation speed and the heat conductivity coefficient of the melt directly determine the quantity of heat obtained by the metal phase, thereby determining the temperature of the metal phase.
Secondly, a diaphragm layer with high viscosity is easily formed at the height position of the phase interface, the main component of the diaphragm layer is metal oxide, and the generated liquid metal is influenced to move downwards to enter a metal phase, so that the furnace condition is deteriorated.
In the process of treating the heavy metal solid waste, the metal content in the melt is very low, and the amount of the generated liquid metal is very small. Moreover, because of the low metal content and the poor thermal conductivity of the melt, the temperature at the bottom of the molten pool is low, so that the phenomenon that the metal phase at the bottom of the molten pool is dead and does not flow occurs; adopting a high-low furnace hearth; high and low nozzles, etc. are used, but none of these measures can fundamentally solve the problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a make harmless and the comprehensive recovery of resource of heavy metal solid useless can accomplish in this treatment furnace, the high-efficient valuable metal of retrieving.
The utility model provides a heavy metal solid waste high-efficiency treatment furnace, which comprises a smelting zone, a reduction zone and a clarification and separation zone, wherein the hearth depth of the clarification and separation zone is less than the hearth depths of the reduction zone and the smelting zone; submerged flow jet burners horizontally inserted into the slag layer are symmetrically arranged on two sides of the smelting zone-melting tank; the reduction zone is provided with a plurality of reduction spray guns which are vertically inserted into the melt from the top of the furnace body, and the depth of the reduction spray guns inserted into the melt can be adjusted in a lifting way; a partition wall is arranged between the smelting zone and the reduction zone to completely separate the reaction atmospheres of the two zones.
In one implementation mode of the technical scheme, the treatment furnace is of a rectangular vertical structure, a hearth is built by refractory materials, and a slag layer part is a copper water jacket; the partition wall is composed of a copper water jacket.
In one implementation mode of the technical scheme, the top parts of the smelting zone and the clarification separation zone are respectively provided with a reburning chamber, and the upper ends of the two reburning chambers are respectively provided with a waste heat boiler; the smelting area is provided with a smelting accident slag hole.
In one embodiment of the above technical scheme, the reduction spray gun is of an inner and outer sleeve type structure, the upper end of the inner tube extends out of the outer tube, the side wall of the extending section is provided with a pulverized coal inlet connecting tube, the top surface of the outer tube is provided with a flange, the top of the outer tube is provided with an oxygen-enriched air inlet connecting tube, the outer wall of the inner tube is provided with a flange corresponding to the flange on the top surface of the outer tube, the two flanges are fixedly connected through a fastener, the lower end of the outer tube extends out of the lower end of the inner tube, a swirl vane is arranged between the outlet end section of.
In one embodiment of the above technical solution, the reduction lance is fixed to the outside of the top of the lifting frame by an adjusting rod.
In an embodiment of the above technical scheme, the crane includes a top frame and a bottom frame of a parallel arrangement rectangle and a connection beam therebetween, the outside of the bottom frame extends out of the top frame, the inside parallel and level of the two, the two ends of the inside of the bottom frame and the top frame are respectively and symmetrically connected with a guide wheel device, and the guide wheel device includes a U-shaped mounting frame and a guide wheel installed thereon.
In one embodiment of the above technical scheme, a flange-type fixing seat is arranged below the outer wall of the reduction spray gun outer tube corresponding to the oxygen-enriched air inlet connecting tube, a supporting frame is connected to the outer side of the bottom frame, and the fixing seat is fixed on the supporting frame through a fastening piece.
In an embodiment of the above technical scheme, the crane realizes the up-down lifting through the lifting driving device, the lifting driving device is an electric winch and is fixed at the upper end of the lifting track, the driving motor drives the plurality of winding drums to wind the steel wire rope to lift the crane at the same time, and the lifting stroke is 4-6 meters.
In an embodiment of the above technical solution, the lifting rail includes a plurality of profile steels arranged in parallel along the vertical direction and a horizontal connecting frame between the bottom and the top of the profile steel, the U-shaped frame of the guide wheel device is located at the periphery of the profile steel, and the guide wheels thereon slide along the surface of the profile steel.
In one embodiment of the above technical solution, fixed pulleys are respectively fixed at positions corresponding to the position of the winding drum on the horizontal connecting frame at the top of the lifting rail, corresponding fixed pulleys are fixed on the top frame of the lifting frame, the steel wire rope turns to the direction through the pulley groove of the fixed pulley on the horizontal connecting frame at the top of the lifting rail, then vertically faces downwards, bypasses the pulley groove of the fixed pulley on the lifting frame, and returns to be hinged with the steel wire rope hinge joint on the horizontal connecting frame.
The treatment furnace is provided with a smelting zone, a reduction zone and a clarification separation zone, so that the harmlessness and the comprehensive resource recovery of heavy metal solid wastes can be finished in the treatment furnace. Specifically, two completely different spray guns are arranged, a smelting zone is provided with a potential flow jet burner (ZL201821168025.2), and a reduction zone is provided with a plurality of reduction spray guns vertically inserted into a molten body from the top; the melting zone and the reduction zone are completely separated by a partition wall; two reducing agents with different granularities are adopted, the smelting zone adopts granulated coal as the reducing agent, the reducing zone adopts pulverized coal sprayed into the interior of the solution for reduction, and the two reducing agents with different granularities are adopted, so that the reduction efficiency is improved, and the using amount of the reducing agent is reduced. Oxygen-enriched air and coal are sprayed into the melt in the smelting zone through a submerged jet burner, the processes of material melting, sulfate decomposition and desulfurization, slag formation and partial metal reduction are completed in the smelting zone, no flux is added in the treatment process, and the elements of solid wastes are utilized for slag formation. Therefore, the amount of the slag is reduced, the harmlessness of the heavy metal solid waste is realized, the reduction is realized, the treatment energy consumption is reduced, the metal taken away by the slag is reduced, and the metal recovery rate is improved. The depth of the reduction spray gun inserted into the melt is adjustable, the reduction spray guns with different numbers and insertion depths can be arranged according to the actual requirements of materials, heat is provided for the bottom of the melt in a reduction area, so that the temperature of the melt at the bottom is increased, the problem of metal phase death can be solved, a diaphragm layer between the metal phase and a slag phase of the melt can be eliminated, metal oxide is reduced into metal, the metal enters a clarification separation area of a metal phase flowing into a smelting furnace, the metal taken away by slag is reduced, and valuable metal is efficiently recovered. The slag is a glass body with stable chemical properties and takes iron, silicon and calcium as main components, and belongs to common solid waste, namely, heavy metal solid waste is subjected to harmless treatment.
Drawings
Fig. 1 is a schematic front view of an embodiment of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic top view of fig. 1.
FIG. 4 is an enlarged schematic view of the reduction lance and its mounting structure and driving device shown in FIG. 1.
Fig. 5 is a side view of fig. 4.
Fig. 6 is an enlarged schematic view of a portion a in fig. 4.
Fig. 7 is a schematic axial view of the structure of fig. 4.
Number in the figure:
1-a feed inlet; 2-smelting and reburning chamber; 3-secondary tuyere of smelting zone; 4-primary tuyere of smelting zone;
5-smelting an accident slag hole; 6-smelting waste heat boiler;
7-partition wall;
8-reduction spray gun; 9-a lifting frame; 10-a guide wheel device; 11-a lifting drive; 12-a lifting rail;
13-a slag tap; 14-metal tapping; 15-reduction recombustion chamber; 16-reduction waste heat boiler.
Detailed Description
As shown in fig. 1 to 7, the high-efficiency heavy metal solid waste treatment furnace disclosed in the embodiment has a rectangular vertical structure, a hearth is built by refractory materials, and a copper water jacket is arranged at a position of a furnace wall corresponding to a slag layer. The furnace is divided into three different functional areas, namely a smelting area, a reduction area and a clarification and separation area.
The two sides of the furnace wall of the smelting zone are provided with a smelting primary air port 4 and a smelting secondary air port 3, the setting height of the smelting primary air port is positioned on a melt slag layer, a submerged jet burner RSQ with the patent number of ZL201821168025.2 is installed in the smelting primary air port, and the top of the smelting primary air port is provided with a charging opening 1, a smelting reburning chamber 2 and a smelting waste heat boiler 6. An oxygen spraying pipe is arranged in the smelting secondary tuyere 3.
The reduction zone is provided with a reduction lance 8 vertically inserted into the melt from the top, a partition wall 7 consisting of a copper water jacket is arranged between the smelting zone and the reduction zone, and a melt flow channel is arranged below the partition wall.
The hearth of the clarification separation zone is deeper than the reduction zone and the smelting zone, and no tuyere or spray gun is arranged, so that the relative static melt is favorable for metal clarification separation. The upper part of the clarification separation area is provided with a reduction reburning chamber 15, and the upper end of the reduction reburning chamber 15 is provided with a reduction waste heat boiler 16. The clarifying and separating area is provided with a slag tap 13 and a metal tap 14. The upper part of the reduction reburning chamber 15 is provided with a secondary air port, and an oxygen spraying pipe is arranged in the secondary air port.
As can be seen from fig. 1 and fig. 4 to 7, the reduction lance 8 disposed in the reduction region is fixed on the crane 9, the crane 9 is lifted by the lifting driving device 11, the lifting driving device 11 is fixed on the top of the lifting rail 12, and the crane 9 is stably lifted along the lifting rail 12 by the guide wheel device 10.
The lifting track 12 of this embodiment includes along two vertical parallel arrangement's H shaped steel and the horizontal connection frame between H shaped steel bottom and the top, and H shaped steel is as crane orbit.
The crane 9 of this embodiment includes the rectangular top frame and the underframe of parallel arrangement and the tie-beam between the two, and outside the outside of underframe stretched out outside the top frame, inboard parallel and level between them, and the underframe has the leading wheel device 10 with the inboard both ends of top frame symmetric connection respectively. One lifting frame 9 is provided with four groups of guide wheel devices 10, so that the lifting frame can keep vertical lifting without deviation and shaking in the lifting process.
The guide wheel device 10 comprises a U-shaped mounting frame 101 and guide wheels mounted on the U-shaped mounting frame, the U-shaped mounting frame is located on the periphery of the lifting rail section steel, in the embodiment, H-shaped steel is used as a rail, the guide wheels are provided with a left clamping guide wheel 102, a right clamping guide wheel 102, a front guide wheel 103 and a rear guide wheel 103, the left clamping guide wheel and the right clamping guide wheel are fixed on two inner sides of the U-shaped mounting frame, the front clamping guide wheel and the rear clamping guide wheel are fixed on the outer sides between.
The reduction lance 8 of this embodiment has an inner and outer sleeve structure for facilitating lifting, the upper end of the inner tube 81 extends out of the outer tube 82, the side wall of the extending section has a fuel/reducing agent inlet connection pipe 83, the top surface of the outer tube 82 has a flange, the top has an oxygen-enriched air inlet connection pipe 84, the outer wall of the inner tube has a flange corresponding to the flange on the top surface of the outer tube, the two flanges are connected and fixed by fasteners, the lower end of the outer tube 82 extends out of the lower end of the inner tube 81, a swirl plate 85 is arranged between the outlet end section of the inner tube and the outer tube, and the inner wall. The upper end of the reduction lance is provided with a lifting lug 87.
The rotational flow sheet 85 can enable the outlet airflow of the reduction spray gun to form rotational flow to stir the melt, thereby being beneficial to the mass transfer and heat transfer in the melt and reducing the splashing height of the melt.
In order to easily replace the portion of the outer pipe 82 inserted into the melt after it is burned out, a single layer of heat-resistant stainless steel pipe is provided with a length of about 600mm at the lower end of the outer pipe.
Since the ceramic tube 86 has good wear resistance, the inner wall of the inner tube 31 is attached to the ceramic tube 36 to prolong the service life thereof.
Two reduction spray guns 8 are fixed on the lifting frame 9 of the embodiment, adjusting rods TZG are symmetrically hinged to two ends of the outer side of the top frame of the lifting frame, and two ends of each adjusting rod are hinged to ear plates arranged on the outer wall of an inner pipe 81 of each reduction spray gun 8.
The outer wall of the outer pipe 82 of the reduction spray gun 8 is provided with a flange type fixing seat 88 below the oxygen-enriched air inlet connecting pipe 84, the outer side of the bottom frame of the lifting frame 9 is connected with a supporting frame ZCK, and the fixing seat 88 is fixed on the supporting frame through a fastening piece.
The lifting driving device 11 adopts an electric winch, a driving motor of the lifting driving device drives two winding drums to wind a steel wire rope lifting crane 9 at the same time, and the lifting stroke is 4-6 meters, so that the lifting driving device can change the insertion depth of the reduction spray gun in the melt and can completely draw the reduction spray gun out of the top of the smelting furnace.
As can be seen from fig. 1, 4, 5 and 7, fixed pulleys are respectively fixed on the horizontal connecting frame at the top of the lifting rail 12 at positions corresponding to the two reels, corresponding fixed pulleys are fixed on the top frame of the lifting frame 9, and the steel wire rope turns through the pulley groove of the fixed pulley on the horizontal connecting frame at the top of the lifting rail 12, vertically and downwards bypasses the pulley groove of the fixed pulley on the lifting frame 9, and returns to be hinged with the steel wire rope hinge joint on the horizontal connecting frame.
When the reduction spray gun is applied, the granulated coal and the oxygen-enriched air are both conveyed through the metal hose, namely, the fuel/reducing agent and the oxygen-enriched air inlet connecting pipe of the reduction spray gun are both connected with the metal hose communicated with corresponding conveying equipment.
Only two reducing spray guns are shown in fig. 4 to 7, so that the structure in the drawings is clearer, multiple sets of assembly parts shown in fig. 4 to 7 can be mounted on the top of the reduction zone furnace according to actual needs, so that the insertion depth and the mounting position of each reducing spray gun can be adjusted more flexibly, and a plurality of reducing spray guns can be sequentially arranged and mounted on the lifting frame according to the structures shown in the drawings and determined according to actual conditions.
The reduction lance of the invention follows the principles of metallurgy thermodynamics and kinetics, in particular the following aspects:
firstly, controlling the temperature required by material melting and chemical reaction at different heights of the melt by changing the depth of the melt inserted into the melt;
secondly, adjusting the ratio of the oxygen-enriched air to the fuel/reducing agent (namely the oxygen-carbon ratio) to control the degree of oxidizing atmosphere or reducing atmosphere required in the furnace;
thirdly, adjusting the pressure of the oxygen-enriched air to control the stirring intensity of the melt;
and fourthly, the arrangement of the rotational flow sheet can enable the airflow at the outlet section of the rotational flow sheet to form rotational flow stirring on the melt, improve the mass transfer and heat transfer in the melt and reduce the splashing height of the melt.
The heavy metal solid waste treatment by using the treatment furnace comprises the following steps:
1. continuously adding heavy metal solid waste and a granulated coal reducing agent into a smelting zone from a feeding port;
2. oxygen-enriched air and pulverized coal fuel are injected from a primary air port, the processes of material melting, sulfate decomposition and desulfurization, slagging, partial metal reduction and the like are completed in a smelting zone, and the flue gas in the smelting zone contains SO2Cooling and dedusting the melt by a waste heat boiler in the smelting zone, and then sending the melt to acid making or desulfurization treatment, wherein the melt generated in the smelting zone flows into a reduction zone through a channel below a partition wall;
3. spraying pulverized coal as a reducing agent through a reducing spray gun, reducing heavy metal oxides in the melt into metal entering a metal phase, and then clarifying and separating to form an obvious phase interface;
4. periodically discharging metal (metal phase may be a certain metal, or alloy or solid solution of multiple metals) from the siphon mouth of the clarification separation zone;
5. and discharging slag from a slag discharging port (the slag is a chemically stable vitreous body taking iron, silicon and calcium as main components and belongs to common solid waste).
The heavy metal solid waste has wide sources and various types, and must be classified firstly. There are three major categories that can be classified according to source:
(1) slag and fume from pyrometallurgical processes
The water content is low, most heavy metals exist in the form of oxides, and the chemical properties are relatively stable;
(2) wet smelting slag
The water content is 20-30%, most heavy metals exist in the ion state of salts and permeate into surface water along with rainwater;
(3) various sludges including electroplating sludge, pickling sludge, wastewater treatment sludge
The water content is as high as 60-70%, about 30% of the water is crystal water, most heavy metals exist in the ion state of salts and permeate into surface water along with rainwater.
Before being added into a treatment furnace, wet smelting slag and sludge need to be dried, the wet smelting slag is dried to contain 15% of water, and the sludge is dried to contain about 30% of water because crystal water in the sludge is difficult to evaporate at the drying temperature.
The granular coal in the material and the fine coal sprayed by the undercurrent jet burner are burnt in oxygen-enriched air to obtain C + O2＝CO2，CO2C-CO, releasing a great deal of heat, the temperature reaches 1300-1400 ℃, the material is melted, and the sulfate decomposes the MeSO4＝MeO+SO2Releasing the SO2 gas into the flue gas. It is also possible that a portion of the readily reducible metal (e.g., copper, lead) is reduced to the metal MeO + CO-Me + CO2. The reduced metal Me forms a metal phase, the difficult-to-reduce oxide MeO (e.g. ZnO, FeO, SiO)2CaO, etc.) and the slag components come from various elements of solid wastes, and are formed as FeO and SiO2And CaO is a multi-element slag type with the main component, and no other flux is needed for slagging. In general, ternary eutectics have somewhat lower melting points than binary eutectics, and multicomponent eutectics have lower melting points than ternary eutectics. Therefore, the slag form with lower melting point can be obtained without adding flux.
The melt including metal and slag enters the reduction zone through a passage below the partition wall and passes through a reduction lanceSpraying pulverized coal and oxygen-enriched air into the melt slag layer, controlling strong reducing atmosphere, and reducing valuable metals such as copper, lead, zinc, nickel, tin, antimony and the like to obtain MeO + CO-Me + CO2. The heavy metal oxide is reduced into metal, enters into a metal phase, the heavy metal in the slag is removed, and the glass body which has stable chemical property and does not harm the environment is formed.
Claims (10)
1. The utility model provides a heavy metal is useless high-efficient processing stove admittedly which characterized in that: the device comprises three functional areas, namely a smelting area, a reduction area and a clarification and separation area, wherein the hearth depth of the clarification and separation area is less than the hearth depths of the reduction area and the smelting area; submerged flow jet burners horizontally inserted into the slag layer are symmetrically arranged on two sides of the smelting zone-melting tank; the reduction zone is provided with a plurality of reduction spray guns which are vertically inserted into the melt from the top of the furnace body, and the depth of the reduction spray guns inserted into the melt can be adjusted in a lifting way; a partition wall is arranged between the smelting zone and the reduction zone to completely separate the reaction atmospheres of the two zones.
2. The high-efficiency treatment furnace for the solid waste of heavy metals as claimed in claim 1, wherein: the furnace hearth is built by refractory materials, and the slag layer part is a copper water jacket; the partition wall is composed of a copper water jacket.
3. The high-efficiency treatment furnace for the solid waste of heavy metals as claimed in claim 1, wherein: the top parts of the smelting zone and the clarification separation zone are respectively provided with a reburning chamber, and the upper ends of the two reburning chambers are respectively provided with a waste heat boiler; the smelting area is provided with a smelting accident slag hole.
4. The high-efficiency treatment furnace for the solid waste of heavy metals as claimed in claim 1, wherein: the reduction spray gun is of an inner sleeve and outer sleeve type structure, the upper end of the inner tube extends out of the outer tube, a pulverized coal inlet connecting tube is arranged on the side wall of the extending section, a flange is arranged on the top surface of the outer tube, an oxygen-enriched air inlet connecting tube is arranged on the top of the outer tube, a flange corresponding to the flange on the top surface of the outer tube is arranged on the outer wall of the inner tube, the two flanges are fixedly connected through a fastener, the lower end of the outer tube extends out of the lower end of the inner tube, a spinning disk is arranged between the end section.
5. The high-efficiency treatment furnace for the solid waste of heavy metals as claimed in claim 4, wherein: the reduction spray gun is fixed on the outer side of the top of the lifting frame through the adjusting rod.
6. The high-efficiency treatment furnace for the solid waste of heavy metals as claimed in claim 5, wherein: the crane comprises a top frame and a bottom frame which are arranged in parallel and a connecting beam between the top frame and the bottom frame, the outer side of the bottom frame extends out of the top frame, the inner sides of the bottom frame and the bottom frame are parallel and level, two ends of the inner sides of the bottom frame and the top frame are respectively and symmetrically connected with guide wheel devices, and each guide wheel device comprises a U-shaped mounting frame and a guide wheel arranged on the U-shaped mounting frame.
7. The high-efficiency treatment furnace for the solid waste of heavy metals as claimed in claim 6, wherein: the outer wall of the outer pipe of the reduction spray gun is provided with a flange type fixing seat corresponding to the lower part of the oxygen-enriched air inlet connecting pipe, the outer side of the bottom frame is connected with a supporting frame, and the fixing seat is fixed on the supporting frame through a fastening piece.
8. The high-efficiency treatment furnace for the solid waste of heavy metals as claimed in claim 7, wherein: the lifting frame is lifted up and down through the lifting driving device, the lifting driving device is an electric winch and is fixed at the upper end of the lifting track, the driving motor of the lifting driving device drives the plurality of winding drums to wind the steel wire ropes to lift the lifting frame, and the lifting stroke is 4-6 meters.
9. The high-efficiency treatment furnace for the solid waste of heavy metals as claimed in claim 8, wherein: the lifting track comprises a plurality of vertical parallel arranged section steels and a horizontal connecting frame between the bottoms and the tops of the section steels, the U-shaped frame of the guide wheel device is positioned on the periphery of the section steels, and the guide wheels on the guide wheel device slide along the surfaces of the section steels.
10. The high-efficiency treatment furnace for the solid waste of heavy metals as claimed in claim 9, wherein: fixed pulleys are respectively fixed on the horizontal connecting frame at the top of the lifting track corresponding to the position of the winding drum, corresponding fixed pulleys are fixed on the top frame of the lifting frame, the steel wire rope turns downwards vertically after passing through a pulley groove of the fixed pulleys on the horizontal connecting frame at the top of the lifting track, and returns to be hinged with a steel wire rope hinge joint on the horizontal connecting frame after passing through the pulley groove of the fixed pulleys on the lifting frame.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110257637A (en) * | 2019-07-19 | 2019-09-20 | 长沙有色冶金设计研究院有限公司 | A kind of solid waste of heavy metal high-efficient treatment method and treatment furnace |
| WO2023054552A1 (en) * | 2021-09-30 | 2023-04-06 | 株式会社クボタ | Melting furnace and method for operating melting furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110257637A (en) * | 2019-07-19 | 2019-09-20 | 长沙有色冶金设计研究院有限公司 | A kind of solid waste of heavy metal high-efficient treatment method and treatment furnace |
| WO2023054552A1 (en) * | 2021-09-30 | 2023-04-06 | 株式会社クボタ | Melting furnace and method for operating melting furnace |
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