A smelting system of a water-cooled secondary lead multi-chamber smelting furnace

Abstract

A smelting system of a water-cooled secondary lead multi-chamber smelting furnace belongs to the technical field of secondary lead smelting. It includes: a smelting furnace, a flue outlet, a settling chamber, a waste heat boiler, a desulfurization and dust removal, a chimney, a gate and a fire flue; two smelting furnaces with the same structure are connected through a fire flue; there is a gate on the flue of the smelting furnace, and a flue outlet at the end; the smelting furnace includes: a furnace top, a furnace wall, a charging port, a combustion-supporting hole, a slag discharge port, a lead discharge port, an observation door, a furnace bottom, a burner and a spray gun; the water-cooled furnace top of the dome structure is composed of a center circle furnace top, a middle circle furnace top and an outer circle furnace top; the inner end of the middle circle furnace top is connected to the center circle furnace top, and the outer end of the middle circle furnace top is connected to the outer circle furnace top; the charging port is located at the middle circle furnace top; the gate is a water jacket gate; a water-cooled furnace wall is installed on the furnace wall; and there is a refractory seal at the junction of the water-cooled furnace wall and the water-cooled furnace top. Advantages: long service life, high lead recovery rate, easy operation, economical and applicable, less unorganized emissions, comprehensive utilization of resources, energy saving and consumption reduction.

Description

Technical Field

[0001] The utility model relates to the technical field of secondary lead smelting, in particular to a smelting system of a water-cooled secondary lead multi-chamber smelting furnace. Background Art

[0002] The main smelting methods of primary lead at home and abroad include sintering-blast furnace smelting, submerged top-blown Ausmelt smelting-blast furnace reduction, oxygen top-blown Kaldo converter, and Kivcet; the smelting methods of secondary lead mainly include reverberatory furnace smelting, short kiln smelting, and blast furnace smelting. All of the above methods can meet the current environmental protection requirements, but they all have their own shortcomings. The kivecet process has cumbersome material preparation in the early stage and high production costs; the oxygen-enriched top-blown Ausmelt process has a large investment, single furnace segmented operation, and high labor intensity; the sintering machine-blast furnace process has a low concentration of SO2 produced by the sintering machine, which is difficult to recover and has a bad on-site environment; the reverberatory furnace smelting process is a process that the country has clearly eliminated; the fuel used in the blast furnace smelting method is expensive metallurgical coke; the short kiln smelting method has a high content of valuable metals in the smelting waste.

[0003] With the development of the national economy, the use of lead is increasing, and the consumption and scrapping of lead-acid batteries are increasing. How to efficiently and environmentally recycle waste lead-acid batteries, especially the treatment of lead mud and lead paste in waste batteries, has attracted widespread attention. Most of the existing smelting process methods have poor production process continuity, low thermal efficiency, small single furnace scale, high cost, low lead direct recovery rate, high content of valuable metals in slag, etc., which will not only cause waste of resources, but also cause serious pollution to the ecological environment.

[0004] The secondary lead smelting system comprises: a smelting furnace 1, a flue outlet 10, a settling chamber 16, a waste heat boiler 17, a desulfurization and dust removal 18, a chimney 19, a gate 20, a fire flue 21, a furnace shell and an electrical control cabinet; there are two smelting furnaces 1 with the same structure, and the two smelting furnaces 1 are connected through the fire flue 21;

[0005] There are flues on both smelting furnaces 1, each of which is equipped with a gate, and there are flue outlets 10 at the ends of the flues. The two flue outlets 10 are sequentially connected with a settling chamber 16, a waste heat boiler 17, a desulfurization and dust removal system 18 and a chimney 19 through the flues; a furnace shell with steel plates is wrapped outside the smelting furnace, and an electrical control cabinet controls the normal operation of electrical equipment in the smelting system of recycled lead.

[0006] The smelting furnace 1 comprises: a furnace top, a furnace wall 2, a charging port 4, a combustion-supporting hole, a slag discharge port 7, a lead discharge port 8, an observation door 9, a furnace bottom 13, a burner 14 and a spray gun 15; the furnace wall 2 is built with refractory bricks, the furnace top is connected to the upper end of the furnace wall 2, and the furnace bottom 13 is connected to the lower end of the furnace wall 2; there is a charging port 4 on the furnace top; there is a slag discharge port 7 on the furnace wall 2 at the intersection of the slag line and the lead liquid line, there is a lead discharge port 8 at the intersection of the furnace wall 2 and the furnace bottom 13, and there is a combustion-supporting hole and an observation door 9 on the furnace wall 2 at the upper end of the slag line; there are multiple combustion-supporting holes, which are spray gun holes 5 and burner holes 6; the spray gun 15 and the burner 14 are respectively installed on the spray gun hole 5 and the burner hole 6.

[0007] The molten pool, furnace wall, furnace roof and other parts of the smelting furnace are the areas where the high-temperature redox reaction of the smelting furnace is most intense. In particular, the furnace wall near the liquid slag line must withstand a high temperature and high pressure environment, as well as the erosion of liquid slag and corrosive gases. The harsh working conditions put forward higher requirements on the smelting furnace. Generally, the secondary lead smelting furnace is built with refractory bricks. Refractory bricks are easily burned during the production process and have a short service life, which increases the frequency of furnace repairs and affects normal production. Utility Model Content

[0008] The utility model aims to provide a smelting system of a water-cooled secondary lead multi-chamber smelting furnace, which solves the problem that the refractory bricks of the existing secondary lead smelting furnace built with refractory bricks are easily burned during the production process and have a short service life.

[0009] The multi-chamber smelting furnace of the secondary lead smelting system comprises: a smelting furnace, a flue outlet, a settling chamber, a waste heat boiler, a desulfurization and dust removal, a chimney, a gate, a fire flue, a furnace shell and an electrical control cabinet; there are two smelting furnaces with the same structure, and the two smelting furnaces are connected through the fire flue; there are flues on both smelting furnaces, a gate is installed on each flue, and there are flue outlets at the ends of the flue, and the two flue outlets are sequentially connected with the settling chamber, the waste heat boiler, the desulfurization and dust removal and the chimney through the flue; the furnace shell is wrapped with a steel plate outside the smelting furnace, and the electrical control cabinet controls the normal operation of the electrical equipment in the secondary lead smelting system;

[0010] The smelting furnace comprises: a furnace top, a furnace wall, a slag discharge port, a lead discharge port, and a furnace bottom;

[0011] The furnace wall is built with refractory bricks, the furnace bottom is connected to the lower end of the furnace wall, and the furnace top is located at the top; there is a slag discharge port on the furnace wall at the intersection of the slag line and the lead liquid line, and there is a lead discharge port at the intersection of the furnace wall and the furnace bottom;

[0012] The furnace top is a water-cooled furnace top, which is a dome structure and has a charging port.

[0013] The gate is a water jacket gate;

[0014] The furnace wall also includes a water-cooled furnace wall, which is installed at the upper end of the furnace wall and located in the slag area above the lead liquid line; there are furnace wall combustion-supporting holes and an observation door on the water-cooled furnace wall at the upper end of the slag line, and there are multiple furnace wall combustion-supporting holes, which are respectively a spray gun hole and a burner hole; a spray gun and a burner are respectively installed on the spray gun hole and the burner hole;

[0015] There is refractory sealing mud at the junction of the water-cooled furnace wall and the water-cooled furnace top.

[0016] The water-cooled furnace wall comprises: a furnace wall cooling wall, a furnace wall combustion-supporting hole, a furnace wall fixing bolt, a furnace wall brick dovetail groove, a furnace wall cooling wall serpentine pipe, a furnace wall water outlet, a furnace wall water inlet and a furnace wall refractory brick; the furnace wall cooling wall is an arc-shaped rectangular block, and there are furnace wall combustion-supporting holes and fixing holes on the furnace wall cooling wall. The furnace wall fixing bolts fix the furnace wall cooling wall on the furnace shell through the fixing holes. Multiple furnace wall cooling walls are spliced ​​into a circular tubular water-cooled furnace wall. The gaps between adjacent furnace wall cooling walls and between the furnace wall cooling walls and the furnace wall are filled with refractory clinker of the same material as the masonry furnace wall refractory bricks, and the gap between the furnace wall cooling wall and the furnace shell is pressed into refractory mud;

[0017] There are two furnace wall cooling stave serpentine tubes, which are embedded in the furnace wall cooling stave side by side. A furnace wall water outlet and a furnace wall water inlet are respectively provided at both ends of the two furnace wall cooling stave serpentine tubes, which are led out of the furnace wall cooling stave. A furnace wall brick dovetail groove is provided on the back of the furnace wall cooling stave, and furnace wall refractory bricks are inlaid on the furnace wall brick dovetail groove. A dovetail tenon is provided at one end of the furnace wall refractory brick, and the dovetail tenon matches the furnace wall brick dovetail groove.

[0018] The two furnace wall cooling wall serpentine tubes are arranged one vertically and the other horizontally; when the furnace wall cooling wall serpentine tubes pass through the furnace wall combustion-supporting holes, they are arranged around the furnace wall combustion-supporting holes; the fixing holes are located on the furnace wall cooling wall in the gap between the furnace wall cooling wall serpentine tubes.

[0019] The water-cooled furnace top is composed of a center circle furnace top, a middle circle furnace top and an outer circle furnace top; the inner end of the middle circle furnace top is connected to the center circle furnace top, and the outer end of the middle circle furnace top is connected to the outer circle furnace top to form a dome structure; the feeding port is located on the middle circle furnace top, and there are 1-6 feeding ports.

[0020] The shape of the center furnace roof is different from that of the middle furnace roof and the outer furnace roof;

[0021] The shape of the center circle furnace top is circular and in one piece;

[0022] The middle furnace roof and the outer furnace roof are both fan-shaped, with multiple pieces spliced ​​into a ring;

[0023] The ring formed by splicing the middle circle furnace top surrounds the circular circumference of the center circle furnace top;

[0024] The outer furnace top is spliced ​​into a circular ring that surrounds the circumference of the middle furnace top circular ring.

[0025] The central ring furnace roof, the middle ring furnace roof and the outer ring furnace roof have the same structure, and all include: furnace roof cooling staves, furnace roof fixing bolts, furnace roof brick dovetail grooves, furnace roof cooling stave serpentine pipes, furnace roof water inlet, furnace roof water outlet and furnace roof refractory bricks;

[0026] The furnace roof cooling staves are circular or fan-shaped. The fan-shaped ones are made of multiple pieces spliced ​​into a ring. There are fixing holes on the furnace roof cooling staves. The furnace roof fixing bolts are fixed to the furnace shell through the fixing holes. Refractory mud is pressed into the gaps between adjacent furnace roof cooling staves and between the middle circle furnace roof and the outer circle furnace roof formed by the furnace roof cooling staves to form a complete dome furnace roof.

[0027] Two furnace top cooling stave serpentine pipes are embedded in the furnace top cooling stave side by side, and a furnace wall water inlet and a furnace wall water outlet are respectively provided at both ends of the two furnace top cooling stave serpentine pipes, which are led out of the furnace top cooling stave; a furnace top brick dovetail groove is provided on the back of the furnace top cooling stave, and a furnace top refractory brick is inlaid on the furnace top brick dovetail groove; a dovetail tenon is provided at one end of the furnace top refractory brick, and the dovetail tenon matches the furnace top brick dovetail groove;

[0028] A circular ring formed by splicing a plurality of fan-shaped middle ring furnace roofs includes a middle ring furnace roof with a furnace top charging port; in the middle ring furnace roofs spliced ​​into a circular ring, there are 1 to 6 fan-shaped middle ring furnace roofs with a furnace top charging port; and furnace top charging port refractory bricks are installed in the furnace top charging port.

[0029] In the circular furnace top cooling wall, the two furnace top cooling wall serpentine tubes both start from a point on the edge of the center circle furnace top, and are repeatedly bent horizontally to another point on the edge and terminate. The two furnace top cooling wall serpentine tubes are arranged in a staggered manner vertically and horizontally.

[0030] In the fan-shaped furnace roof cooling stave, two furnace roof cooling stave serpentine pipes are arranged in the same manner on the middle ring furnace roof and the outer ring furnace roof, one of which starts from one end of the fan-shaped surface and is repeatedly bent horizontally to another point of the fan-shaped surface, and the other starts from one end of the fan-shaped surface and is repeatedly bent longitudinally to another point of the fan-shaped surface;

[0031] When the furnace top cooling wall serpentine pipe arranged on the middle ring furnace top encounters the furnace top charging port, it is arranged around the furnace top charging port.

[0032] The water jacket gate comprises: a gate cooling wall, a gate water inlet, a gate water outlet, a gate hook, a gate serpentine pipe, a gate refractory brick and a gate dovetail groove;

[0033] A gate hook is connected to the upper end of the gate cooling wall; there are two gate serpentine pipes, which are embedded in the gate cooling wall side by side, and a gate water inlet and a gate water outlet are respectively provided at both ends of the gate serpentine pipe, both of which are led out from the upper end of the gate cooling wall; gate dovetail grooves are provided on the four sides and the bottom of the gate cooling wall, and gate refractory bricks are connected to the gate dovetail grooves; one end of the gate refractory brick is provided with a dovetail tenon, and the dovetail tenon matches the gate dovetail groove.

[0034] The two gate serpentine tubes are arranged one vertically and the other horizontally.

[0035] Beneficial effect: Due to the adoption of the above scheme, there are at least two smelting furnaces in the smelting furnace device, one is working and the other is waiting to work, and they are operated alternately. When the two smelting furnaces are working alternately, the opening or closing of the water jacket gate in the flue is controlled by the electrical control cabinet to implement interlocking. The water jacket gate of the smelting furnace in the working state is opened, and the water jacket gate of the smelting furnace in the non-working state is closed at the same time, so as to control the alternating operation of the two smelting furnaces. The flow direction of the high-temperature flue gas is controlled by opening and closing the flue water jacket gate. The high-temperature flue gas of the working smelting furnace heats the material in the other smelting furnace through the overfire flue. The thermal energy utilization rate is high, the comprehensive energy consumption of the secondary lead smelting process is reduced, and the energy-saving effect is obvious.

[0036] The prepared charge (lead-containing materials such as lead mud, reducing coal, iron oxide or iron filings mixed in a certain proportion) is added from the charging port on the top of the smelting furnace through a belt conveyor. Pure oxygen or oxygen-enriched air, natural gas, and pulverized coal are blown into the furnace from the combustion-supporting holes on the furnace wall through spray guns and burners. The charge is heated and melted in the furnace body, and a strong chemical reaction occurs. The lead compounds in the lead mud are reduced to metallic lead and sink to the bottom of the furnace and are discharged through the lead discharge port. The generated slag is discharged through the slag discharge port. The generated flue gas enters the settling chamber through the flue outlet to settle large particles of smoke and dust, and the waste heat is recovered by the waste heat boiler for reuse. Finally, the sulfur dioxide and dust are removed by the desulfurization and dust removal device to meet the emission standards.

[0037] The smelting furnace is equipped with cooling walls in the furnace wall and the furnace roof. During production, the water inlet pipe of the system continuously adds cooling water to the cooling wall through the cooling wall water inlet. The cooling water is forced to cool the furnace wall and the furnace roof through the cooling wall and then discharged from the water outlet. Due to the effect of the cooling water in the cooling wall, the temperature gradient of the furnace body is changed, the heat dissipation of the furnace body is increased, which is beneficial to the slag protection of the refractory bricks of the furnace lining, so that a slag layer is formed on the surface of the refractory bricks, thereby greatly delaying the erosion of the furnace lining and extending the service life of the furnace lining.

[0038] The utility model solves the problem that the existing secondary lead smelting furnace built with refractory bricks is easy to burn out and has a short service life during the production process, thereby achieving the purpose of the utility model.

[0039] Advantages: The smelting system of the utility model has long service life, high lead recovery rate, easy operation, economical and applicable, less unorganized emissions, comprehensive utilization of resources, energy saving and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural diagram of the utility model.

[0041] Figure 2 It is a schematic diagram of the cross-sectional structure of the smelting furnace of the utility model.

[0042] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of the water-cooled furnace top.

[0043] Figure 4 yes Figure 3 Schematic diagram of the top view structure.

[0044] Figure 5 The utility model is a schematic diagram of the cross-sectional structure of the middle circle furnace roof of the water-cooled furnace roof.

[0045] Figure 6 The utility model is a schematic diagram of the cross-sectional structure of the furnace top cooling wall of the middle ring furnace top.

[0046] Figure 7 The utility model is a schematic diagram of the horizontal arrangement structure of the serpentine pipes in the furnace top cooling fireplace top of the middle circle furnace top.

[0047] Figure 8 The utility model is a schematic diagram of the vertical arrangement structure of the serpentine pipes in the furnace top cooling fireplace top of the middle circle furnace top.

[0048] Fig. 9 It is a schematic diagram of the furnace wall cooling stave structure of the utility model.

[0049] Fig.10 yes Fig. 9 Schematic diagram of the top view structure.

[0050] Fig.11 The utility model is a schematic diagram of the vertical arrangement structure of the furnace wall cooling wall serpentine pipes in the furnace wall cooling wall.

[0051] Fig.12 The utility model is a schematic diagram of the transverse arrangement structure of the furnace wall cooling wall serpentine tubes in the furnace wall cooling wall.

[0052] Fig.13 The utility model is a schematic diagram of the cross-sectional structure of a water jacket gate.

[0053] Fig.14 yes Fig.13 Schematic diagram of the side structure.

[0054] Fig.15The utility model is a schematic diagram of the gate cooling wall structure of the water jacket gate.

[0055] In the figure, 1. smelting furnace; 2. furnace wall; 3. water-cooled furnace top; 4. charging port; 5. spray gun hole; 6. burner hole; 7. slag discharge port; 8. lead discharge port; 9. observation door; 10. flue outlet; 11. refractory sealing mud; 12. water-cooled furnace wall; 13. furnace bottom; 14. burner; 15. spray gun; 16. settling chamber; 17. waste heat boiler; 18. desulfurization and dust removal; 19. chimney; 20. water jacket gate; 21. fire flue.

[0056] 3-1, furnace top cooling wall; 3-2, furnace top charging port; 3-3, furnace top fixing bolts; 3-4, furnace top dovetail groove; 3-5, furnace top cooling wall serpentine pipe; 3-6, furnace top water inlet; 3-7, furnace top water outlet; 3-8, furnace top refractory bricks; 3-9, furnace top charging port refractory bricks; 3-1-1, center ring furnace top; 3-1-2, middle ring furnace top; 3-1-3, outer ring furnace top.

[0057] 12-1. Furnace wall cooling stave; 12-2. Furnace wall combustion-supporting holes; 12-3. Furnace wall fixing bolts; 12-4. Furnace wall brick dovetail groove; 12-5. Furnace wall cooling stave serpentine pipe; 12-6. Furnace wall water outlet; 12-7. Furnace wall water inlet; 12-8. Furnace wall refractory bricks.

[0058] 20-1, gate cooling wall; 20-2, gate water inlet; 20-3, gate water outlet; 20-4, gate hook; 20-5, gate serpentine pipe; 20-6, gate refractory brick; 20-7, gate dovetail groove. DETAILED DESCRIPTION

[0059] Embodiment 1: Figure 1 In the invention, the smelting system of the secondary lead multi-chamber smelting furnace includes: a smelting furnace 1, a flue outlet 10, a settling chamber 16, a waste heat boiler 17, a desulfurization and dust removal 18, a chimney 19, a gate 20, a fire flue 21, a furnace shell and an electrical control cabinet; there are two smelting furnaces 1 with the same structure, and the two smelting furnaces 1 are connected through the fire flue 21; there are flues on both smelting furnaces 1, and a gate is installed on each flue, and there are flue outlets 10 at the ends of the flues, and the two flue outlets 10 are sequentially connected with the settling chamber 16, the waste heat boiler 17, the desulfurization and dust removal 18 and the chimney 19 through the flue; a furnace shell with a steel plate wrapped outside the smelting furnace, and the electrical control cabinet controls the normal operation of the electrical equipment in the smelting system of the secondary lead.

[0060] exist Figure 2 In the embodiment, the smelting furnace 1 comprises: a furnace top, a furnace wall 2, a slag discharge port 7, a lead discharge port 8, and a furnace bottom 13;

[0061] The furnace wall 2 is built with refractory bricks, a furnace bottom 13 is connected to the lower end of the furnace wall 2, and the furnace top is located at the top; there is a slag discharge port 7 on the furnace wall at the intersection of the slag line and the lead liquid line, and there is a lead discharge port 8 at the intersection of the furnace wall 2 and the furnace bottom 13.

[0062] Figure 3 , Figure 4 In the embodiment, the furnace top is a water-cooled furnace top 3, which is a dome structure, and a charging port 4 is provided on the water-cooled furnace top 3;

[0063] The gate is a water jacket gate 20;

[0064] The furnace wall 2 further comprises a water-cooled furnace wall 12, which is installed at the upper end of the furnace wall 2 and is located in the slag area above the lead liquid line; the water-cooled furnace wall 12 at the upper end of the slag line is provided with a furnace wall combustion-supporting hole 12-2 and an observation door 9, and the furnace wall combustion-supporting hole 12-2 has a plurality of holes, namely, a spray gun hole 5 and a burner hole 6; a spray gun 15 and a burner 14 are installed on the spray gun hole 5 and the burner hole 6 respectively;

[0065] There is a refractory seal 11 at the junction of the water-cooled furnace wall 12 and the water-cooled furnace top 3.

[0066] The water-cooled furnace wall 12 comprises: a furnace wall cooling stave 12-1, a furnace wall combustion-supporting hole 12-2, a furnace wall fixing bolt 12-3, a furnace wall brick dovetail groove 12-4, a furnace wall cooling stave serpentine pipe 12-5, a furnace wall water outlet 12-6, a furnace wall water inlet 12-7 and a furnace wall refractory brick 12-8; the furnace wall cooling stave 12-1 is an arc-shaped rectangular block, and there are furnace wall combustion-supporting holes 12-2 and fixing holes on the furnace wall cooling stave 12-1. The furnace wall fixing bolts 12-3 fix the furnace wall cooling wall 12-1 on the furnace shell through the fixing holes. Multiple furnace wall cooling walls 12-1 are spliced ​​into a circular tubular water-cooled furnace wall 12. The gaps between adjacent furnace wall cooling walls 12-1 and between the furnace wall cooling walls 12-1 and the furnace wall 2 are filled with refractory clinker of the same material as the masonry furnace wall refractory bricks, and the gap between the furnace wall cooling wall 12-1 and the furnace shell is pressed into refractory mud.

[0067] Fig. 9 , Fig.10 There are two furnace wall cooling stave serpentine pipes 12-5, which are embedded in the furnace wall cooling stave 12-1 side by side, and furnace wall water outlets 12-6 and furnace wall water inlets 12-7 are respectively provided at both ends of the two furnace wall cooling stave serpentine pipes 12-5, which are led out of the furnace wall cooling stave 12-1; there is a furnace wall brick dovetail groove 12-4 on the back of the furnace wall cooling stave 12-1, and furnace wall refractory bricks 12-8 are inlaid on the furnace wall brick dovetail groove 12-4; one end of the furnace wall refractory brick 12-8 has a dovetail tenon, and the dovetail tenon matches the furnace wall brick dovetail groove 12-4.

[0068] Fig.11Among the two furnace wall cooling wall serpentine tubes 12-5, one is arranged vertically; Fig.12 In the figure, another furnace wall cooling wall serpentine tube 12-5 is arranged horizontally; when the furnace wall cooling wall serpentine tube 12-5 passes through the furnace wall combustion-supporting hole 12-2, it is arranged around the furnace wall combustion-supporting hole 12-2; the fixing hole is located on the furnace wall cooling wall 12-1 in the gap where the furnace wall cooling wall serpentine tube 12-5 is arranged.

[0069] Figure 3 , Figure 4 In the embodiment, the furnace roof is a dome structure, which is a water-cooled furnace roof 3, and the water-cooled furnace roof 3 is composed of a center circle furnace roof 3-1-1, a middle circle furnace roof 3-1-2 and an outer circle furnace roof 3-1-3; the inner end of the middle circle furnace roof 3-1-2 is connected to the center circle furnace roof 3-1-1, and the outer end of the middle circle furnace roof 3-1-2 is connected to the outer circle furnace roof 3-1-3 to form a dome structure; a charging port 4 is located on the middle circle furnace roof 3-1-2; and there are 1 to 6 charging ports 4.

[0070] The shape of the center ring furnace top 3-1-1 is different from that of the middle ring furnace top 3-1-2 and the outer ring furnace top 3-1-3;

[0071] The center ring furnace top 3-1-1 is circular in shape and is one piece;

[0072] The middle furnace roof 3-1-2 and the outer furnace roof 3-1-3 are both fan-shaped, and are formed by multiple pieces being spliced ​​into a ring;

[0073] The circular ring formed by the middle furnace top 3-1-2 surrounds the circular circumference of the center furnace top 3-1-1;

[0074] The outer furnace roof 3-1-3 is spliced ​​into a circular ring which surrounds the circumference of the middle furnace roof 3-1-2 circular ring.

[0075] Figure 5 , Figure 6 The center circle furnace top 3-1-1, the middle circle furnace top 3-1-2 and the outer circle furnace top 3-1-3 have the same structure, and all include: a furnace top cooling stave 3-1, a furnace top fixing bolt 3-3, a furnace top brick dovetail groove 3-4, a furnace top cooling stave serpentine pipe 3-5, a furnace top water inlet 3-6, a furnace top water outlet 3-7 and a furnace top refractory brick 3-8;

[0076] The furnace top cooling stave 3-1 has a circular shape or a fan shape, and the fan shape is a plurality of pieces spliced ​​into a circular ring; a fixing hole is provided on the furnace top cooling stave 3-1, and the furnace top fixing bolts 3-3 fix the furnace top cooling stave 3-1 to the furnace shell through the fixing hole, and refractory mud is pressed into the gap between adjacent furnace top cooling staves 3-1 and between the middle circle furnace top 3-1-2 and the outer circle furnace top 3-1-3 formed by the furnace top cooling staves 3-1 to form a complete dome furnace top.

[0077] Two furnace top cooling stave serpentine pipes 3-5 are embedded in the furnace top cooling stave 3-1 side by side, and furnace wall water inlet 3-6 and furnace wall water outlet 3-7 are respectively provided at both ends of the two furnace top cooling stave serpentine pipes 3-5, which are led out of the furnace top cooling stave 3-1; a furnace top brick dovetail groove 3-4 is provided on the back of the furnace top cooling stave 3-1, and a furnace top refractory brick 3-8 is inlaid on the furnace top brick dovetail groove 3-4; one end of the furnace top refractory brick 3-8 has a dovetail tenon, and the dovetail tenon matches the furnace top brick dovetail groove 3-4;

[0078] The circular ring formed by multiple fan-shaped middle circle furnace roofs 3-1-2 includes a middle circle furnace roof 3-1-2 with a furnace top charging port 3-2; among the middle circle furnace roofs 3-1-2 spliced ​​into a circular ring, there are 1-6 fan-shaped middle circle furnace roofs 3-1-2 with a furnace top charging port 3-2; and a furnace top charging port refractory brick 3-9 is installed in the furnace top charging port 3-2.

[0079] In the circular furnace roof cooling stave 3-1, the two furnace roof cooling stave serpentine pipes 3-5 are arranged to start from a point on the edge of the center circle furnace roof 3-1-1 and to bend horizontally and terminate at another point on the edge in a continuous and repeated manner;

[0080] The furnace top cooling wall serpentine pipe 3-5 is arranged in the same manner on the middle furnace top 3-1-2 and the outer furnace top 3-1-3. Figure 7 In the process, one end of the fan-shaped surface is taken as the starting point, and the horizontal bending is repeated continuously to the other point of the fan-shaped surface, and the two furnace top cooling wall serpentine tubes 3-5 are arranged in a staggered manner vertically and horizontally;

[0081] Figure 8 In the fan-shaped furnace roof cooling wall 3-1, two furnace roof cooling wall serpentine pipes 3-5 are arranged the same on the middle circle furnace roof 3-1-2 and the outer circle furnace roof 3-1-3, one of which takes one end of the fan-shaped surface as the starting point and continuously and repeatedly bends horizontally to terminate at another point of the fan-shaped surface, and the other takes one end of the fan-shaped surface as the starting point and continuously and repeatedly bends longitudinally to terminate at another point of the fan-shaped surface; when the furnace roof cooling wall serpentine pipes 3-5 arranged on the middle circle furnace roof 3-1-2 encounter the furnace roof charging port 3-2, they are arranged around the furnace roof charging port 3-2.

[0082] Fig.13 , Fig.14 , Fig.15 In the invention, the water jacket gate 20 comprises: a gate cooling wall 20-1, a gate water inlet 20-2, a gate water outlet 20-3, a gate hook 20-4, a gate serpentine pipe 20-5, a gate refractory brick 20-6 and a gate dovetail groove 20-7;

[0083] A gate hook 20-4 is connected to the upper end of the gate cooling wall 20-1; two gate serpentine pipes 20-5 are embedded in the gate cooling wall 20-1 side by side, and a gate water inlet 20-2 and a gate water outlet 20-3 are respectively provided at both ends of the gate serpentine pipe 20-5, both of which are led out from the upper end of the gate cooling wall 20-1; gate dovetail grooves 20-7 are provided on the four sides and the bottom surface of the gate cooling wall 20-1, and gate refractory bricks 20-6 are connected to the gate dovetail grooves 20-7; one end of the gate refractory brick 20-6 has a dovetail tenon, and the dovetail tenon matches the gate dovetail groove 20-7.

[0084] The two gate serpentine tubes are arranged one vertically and the other horizontally.

Claims

1. A smelting system of a water-cooled secondary lead multi-chamber smelting furnace, the smelting system of the secondary lead multi-chamber smelting furnace comprising: Smelting furnace, flue outlet, settling chamber, waste heat boiler, desulfurization and dust removal, chimney, gate, fire flue, furnace shell and electrical control cabinet; there are two smelting furnaces with the same structure, and the two smelting furnaces are connected through the fire flue; there are flues on both smelting furnaces, each flue is equipped with a gate, and there are flue outlets at the ends of the flue, and the two flue outlets are sequentially connected with the settling chamber, waste heat boiler, desulfurization and dust removal and chimney through the flue; the furnace shell is wrapped with steel plates outside the smelting furnace, and the electrical control cabinet controls the normal operation of the electrical equipment in the smelting system of the secondary lead; The smelting furnace comprises: a furnace top, a furnace wall, a slag discharge port, a lead discharge port, and a furnace bottom; The furnace wall is built with refractory bricks, the furnace bottom is connected to the lower end of the furnace wall, and the furnace top is located at the top; there is a slag discharge port on the furnace wall at the intersection of the slag line and the lead liquid line, and there is a lead discharge port at the intersection of the furnace wall and the furnace bottom; The feature of the furnace is that the furnace top is a water-cooled furnace top, the water-cooled furnace top is a dome structure, and there is a charging port on the water-cooled furnace top; The gate is a water jacket gate; The furnace wall also includes a water-cooled furnace wall, which is installed at the upper end of the furnace wall and located in the slag area above the lead liquid line; there are furnace wall combustion-supporting holes and an observation door on the water-cooled furnace wall at the upper end of the slag line, and there are multiple furnace wall combustion-supporting holes, which are respectively a spray gun hole and a burner hole; a spray gun and a burner are respectively installed on the spray gun hole and the burner hole; There is refractory sealing mud at the junction of the water-cooled furnace wall and the water-cooled furnace top.

2. The smelting system of a water-cooled secondary lead multi-chamber smelting furnace according to claim 1 is characterized in that: The water-cooled furnace wall comprises: a furnace wall cooling wall, a furnace wall combustion-supporting hole, a furnace wall fixing bolt, a furnace wall brick dovetail groove, a furnace wall cooling wall serpentine pipe, a furnace wall water outlet, a furnace wall water inlet and a furnace wall refractory brick; the furnace wall cooling wall is an arc-shaped rectangular block, and there are furnace wall combustion-supporting holes and fixing holes on the furnace wall cooling wall. The furnace wall fixing bolts fix the furnace wall cooling wall on the furnace shell through the fixing holes. Multiple furnace wall cooling walls are spliced ​​into a circular tubular water-cooled furnace wall. The gaps between adjacent furnace wall cooling walls and between the furnace wall cooling walls and the furnace wall are filled with refractory clinker of the same material as the masonry furnace wall refractory bricks, and the gap between the furnace wall cooling wall and the furnace shell is pressed into refractory mud; There are two furnace wall cooling stave serpentine tubes, which are embedded in the furnace wall cooling stave side by side. A furnace wall water outlet and a furnace wall water inlet are respectively provided at both ends of the two furnace wall cooling stave serpentine tubes, which are led out of the furnace wall cooling stave. A furnace wall brick dovetail groove is provided on the back of the furnace wall cooling stave, and furnace wall refractory bricks are inlaid on the furnace wall brick dovetail groove. A dovetail tenon is provided at one end of the furnace wall refractory brick, and the dovetail tenon matches the furnace wall brick dovetail groove.

3. The smelting system of a water-cooled secondary lead multi-chamber smelting furnace according to claim 2 is characterized in that: The two furnace wall cooling wall serpentine tubes are arranged one vertically and the other horizontally; when the furnace wall cooling wall serpentine tubes pass through the furnace wall combustion-supporting holes, they are arranged around the furnace wall combustion-supporting holes; the fixing holes are located on the furnace wall cooling wall in the gap between the furnace wall cooling wall serpentine tubes.

4. The smelting system of a water-cooled secondary lead multi-chamber smelting furnace according to claim 1 is characterized in that: The water-cooled furnace top is composed of a center circle furnace top, a middle circle furnace top and an outer circle furnace top; the inner end of the middle circle furnace top is connected to the center circle furnace top, and the outer end of the middle circle furnace top is connected to the outer circle furnace top to form a dome structure; the feeding port is located on the middle circle furnace top, and there are 1-6 feeding ports.

5. The smelting system of a water-cooled secondary lead multi-chamber smelting furnace according to claim 4 is characterized in that: The shape of the center furnace roof is different from that of the middle furnace roof and the outer furnace roof; The shape of the center circle furnace top is circular and in one piece; The middle furnace roof and the outer furnace roof are both fan-shaped, with multiple pieces spliced ​​into a ring; The circular ring formed by splicing the middle circle furnace top surrounds the circular circumference of the center circle furnace top; The outer furnace top is spliced ​​into a circular ring that surrounds the circumference of the middle furnace top circular ring.

6. The smelting system of a water-cooled secondary lead multi-chamber smelting furnace according to claim 4 is characterized in that: The central ring furnace roof, the middle ring furnace roof and the outer ring furnace roof have the same structure, and all include: furnace roof cooling staves, furnace roof fixing bolts, furnace roof brick dovetail grooves, furnace roof cooling stave serpentine pipes, furnace roof water inlet, furnace roof water outlet and furnace roof refractory bricks; The furnace roof cooling staves are circular or fan-shaped. The fan-shaped ones are made of multiple pieces spliced ​​into a ring. There are fixing holes on the furnace roof cooling staves. The furnace roof fixing bolts are fixed to the furnace shell through the fixing holes. Refractory mud is pressed into the gaps between adjacent furnace roof cooling staves and between the middle circle furnace roof and the outer circle furnace roof formed by the furnace roof cooling staves to form a complete dome furnace roof. Two furnace top cooling stave serpentine pipes are embedded in the furnace top cooling stave side by side, and a furnace wall water inlet and a furnace wall water outlet are respectively provided at both ends of the two furnace top cooling stave serpentine pipes, which are led out of the furnace top cooling stave; a furnace top brick dovetail groove is provided on the back of the furnace top cooling stave, and a furnace top refractory brick is inlaid on the furnace top brick dovetail groove; a dovetail tenon is provided at one end of the furnace top refractory brick, and the dovetail tenon matches the furnace top brick dovetail groove; A circular ring formed by splicing a plurality of fan-shaped middle ring furnace roofs includes a middle ring furnace roof with a furnace top charging port; in the middle ring furnace roofs spliced ​​into a circular ring, there are 1 to 6 fan-shaped middle ring furnace roofs with a furnace top charging port; and furnace top charging port refractory bricks are installed in the furnace top charging port.

7. The smelting system of a water-cooled secondary lead multi-chamber smelting furnace according to claim 6 is characterized in that: In the circular furnace top cooling wall, the two furnace top cooling wall serpentine tubes both start from a point on the edge of the center circle furnace top, and are repeatedly bent horizontally to another point on the edge and terminate. The two furnace top cooling wall serpentine tubes are arranged in a staggered manner vertically and horizontally.

8. The smelting system of a water-cooled secondary lead multi-chamber smelting furnace according to claim 6 is characterized in that: In the fan-shaped furnace roof cooling stave, two furnace roof cooling stave serpentine pipes are arranged in the same manner on the middle ring furnace roof and the outer ring furnace roof, one of which starts from one end of the fan-shaped surface and is repeatedly bent horizontally to another point of the fan-shaped surface, and the other starts from one end of the fan-shaped surface and is repeatedly bent longitudinally to another point of the fan-shaped surface; When the furnace top cooling wall serpentine pipe arranged on the middle ring furnace top encounters the furnace top charging port, it is arranged around the furnace top charging port.

9. The smelting system of a water-cooled secondary lead multi-chamber smelting furnace according to claim 1, characterized in that: The water jacket gate comprises: a gate cooling wall, a gate water inlet, a gate water outlet, a gate hook, a gate serpentine pipe, a gate refractory brick and a gate dovetail groove; A gate hook is connected to the upper end of the gate cooling wall; there are two gate serpentine pipes, which are embedded in the gate cooling wall side by side, and a gate water inlet and a gate water outlet are respectively provided at both ends of the gate serpentine pipe, both of which are led out from the upper end of the gate cooling wall; gate dovetail grooves are provided on the four sides and the bottom of the gate cooling wall, and gate refractory bricks are connected to the gate dovetail grooves; one end of the gate refractory brick is provided with a dovetail tenon, and the dovetail tenon matches the gate dovetail groove.

10. The smelting system of a water-cooled secondary lead multi-chamber smelting furnace according to claim 9, characterized in that: The two gate serpentine tubes are arranged one vertically and the other horizontally.

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