CN219415762U

CN219415762U - Energy-saving zinc rectifying coarse zinc melting furnace

Info

Publication number: CN219415762U
Application number: CN202320438788.9U
Authority: CN
Inventors: 徐啟焰; 葛广付; 张兴应; 夏周国
Original assignee: Xuanwei Hongshu Metal Technology Co ltd
Current assignee: Xuanwei Hongshu Metal Technology Co ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-07-25
Anticipated expiration: 2033-03-10

Abstract

The utility model discloses a zinc rectifying energy-saving coarse zinc melting furnace, which comprises a furnace body and a smoke exhaust pipe, wherein two opposite ends of the furnace body are respectively provided with a feed end and a discharge end, the upper part of the feed end of the furnace body is provided with a feed inlet, the bottom of the feed end is provided with a slag discharge port, the inside of the upper part of the discharge end of the furnace body is provided with a smoke exhaust cavity, the smoke exhaust cavity is communicated with the inside of the furnace body through a smoke exhaust hole, the top of the furnace body is provided with a smoke exhaust channel, the smoke exhaust channel comprises a horizontal part and a vertical part which are communicated, the end part of the horizontal part is communicated with the top of the smoke exhaust cavity, the lower end of the smoke exhaust pipe is communicated with the upper end of the vertical part, the middle part of the side wall of the furnace body close to the discharge end is provided with a discharge port, and the side wall of the furnace body is provided with a burner mounting port. The smoke collecting effect is good, the smoke discharging pipe is durable, safe and environment-friendly, and the smoke collecting device has remarkable economic and social values.

Description

Energy-saving zinc rectifying coarse zinc melting furnace

Technical Field

The utility model relates to the technical field of zinc smelting, in particular to a zinc rectifying energy-saving coarse zinc melting furnace.

Background

In the production process of refined zinc, the formed crude zinc ingot is melted by a melting furnace to form crude zinc liquid, and then the crude zinc liquid is introduced into a lead tower and a cadmium tower to separate impurities such as lead, separation, indium and the like in the crude zinc liquid to obtain high-purity zinc. When the melting furnace is used for heating and melting the crude zinc ingot, the problems that a large amount of smoke is generated in the process of melting the crude zinc ingot, the smoke is diffused, on one hand, the pollution to the field environment is caused, on the other hand, the health of staff is also endangered, dust hoods are arranged above the melting furnace by some enterprises so as to collect the smoke, but the melting furnace is arranged at the top of a lead tower, is higher in position and is always blown up, the smoke collection effect of the dust hoods is poor under the blowing of wind, the smoke is still diffused everywhere, the environment is polluted, a large amount of waste heat is contained in the smoke, and the heat is wasted due to the discharge of the smoke; secondly, some enterprises set up the tobacco pipe of discharging fume at the top of melting furnace, and the flue gas that crude zinc ingot melting produced is discharged through the tobacco pipe of discharging fume, but because the flue gas temperature is higher, at the continuous exhaust in-process of flue gas, can lead to the burning loss of tobacco pipe lower extreme of discharging fume, lead to the leakage of flue gas then, and need shut down the processing when follow-up maintenance, maintenance workman has the potential safety hazard, wastes time and energy, is unfavorable for the long-term normal clear of smart zinc production. Therefore, development of a zinc rectifying energy-saving type crude zinc melting furnace with good flue gas collection effect, durable smoke exhaust pipe, safety and environmental protection is objectively required.

Disclosure of Invention

The utility model aims to provide a zinc rectifying energy-saving type crude zinc melting furnace with good flue gas collection effect, durable smoke exhaust pipe, safety and environmental protection.

The utility model aims at realizing the method, which comprises a furnace body and a smoke exhaust pipe, wherein two opposite ends of the furnace body are respectively a feed end and a discharge end, the upper part of the feed end of the furnace body is provided with a feed inlet, the bottom is provided with a slag discharge port, the inside of the upper part of the discharge end of the furnace body is provided with a smoke exhaust cavity, the smoke exhaust cavity is communicated with the inside of the furnace body through a smoke exhaust hole, the top of the furnace body is provided with a smoke exhaust channel, the smoke exhaust channel comprises a horizontal part and a vertical part which are communicated, the end part of the horizontal part is communicated with the top of the smoke exhaust cavity, the lower end of the smoke exhaust pipe is communicated with the upper end of the vertical part, the middle part of the side wall of the furnace body close to the discharge end is provided with a discharge port, and the side wall of the furnace body is provided with a burner mounting port.

Further, spare ports are symmetrically arranged on the side wall of the furnace body opposite to the discharge port.

Further, a heat exchange tube is provided in the horizontal portion.

Further, a spiral pipe is arranged on the inner wall of the horizontal part.

Further, an opening is formed in the side wall of the vertical portion, and a plugboard is movably inserted into the opening.

Further, the length of the horizontal part is one third to two thirds of the length of the furnace body.

Further, a receiving groove is arranged on the outer side of the discharging hole, a material guiding chute is arranged at the discharging end of the receiving groove, and a smoke collecting hood is arranged above the material guiding chute.

When the furnace is used, the corresponding burner is arranged at the burner mounting port, raw materials such as crude zinc ingots are added into the furnace body through the feeding port, the burner is started to heat flame of the crude zinc ingots in the furnace body, the crude zinc ingots are heated and melted and then discharged from the discharging port, a large amount of high-temperature smoke is generated for continuous feeding of the lead tower in the melting process of the crude zinc ingots and in the combustion process of fuel, the high-temperature smoke flows in the furnace body, then enters the smoke discharging cavity through the smoke discharging hole, then sequentially enters the horizontal part and the vertical part from the smoke discharging cavity, and finally is discharged through the smoke discharging pipe. In the utility model, the traditional dust hood is omitted, the smoke is guided and dredged through the smoke discharging channel and the smoke discharging pipe, so that the smoke in the furnace body can be smoothly discharged, the smoke discharging process is not influenced by external wind, the leakage of the smoke can be effectively prevented, the smoke collecting effect is good, the surrounding environment of the melting furnace can be ensured, the waste of waste heat in the smoke can be prevented, the utilization rate of energy sources in the whole system is improved, and the energy saving effect is good; in the utility model, the smoke discharging channel built by the refractory bricks is arranged at the top of the furnace body, and the smoke firstly passes through the smoke discharging channel when discharged and reduces the temperature of the smoke before entering the smoke discharging pipe, so that the damage of the smoke discharging pipe due to high temperature is prevented, the service life of the smoke discharging pipe is prolonged, the maintenance frequency is reduced, and the long-term normal operation of the zinc rectifying system is ensured. The smoke collecting effect is good, the smoke discharging pipe is durable, safe and environment-friendly, and the smoke collecting device has remarkable economic and social values.

Drawings

FIG. 1 is a schematic diagram of a front view of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

in the figure: the device comprises a 1-furnace body, a 2-smoke exhaust pipe, a 3-feeding end, a 4-discharging end, a 5-feeding port, a 6-slag discharge port, a 7-smoke exhaust cavity, an 8-smoke exhaust hole, a 9-horizontal part, a 10-vertical part, a 11-discharging port, a 12-burner mounting port, a 13-standby port, a 14-heat exchange pipe, a 15-spiral pipe, a 16-plugboard, a 17-receiving chute, a 18-guiding chute and a 19-smoke collecting cover.

Description of the embodiments

The utility model is further described below with reference to the accompanying drawings, without limiting the utility model in any way, and any alterations or modifications based on the utility model are within the scope of the utility model.

As shown in figures 1-2, the utility model comprises a furnace body 1 and a smoke exhaust pipe 2, wherein the furnace body 1 and the smoke exhaust pipe 2 are of the existing structure, under the premise of unchanged other sizes, the height of the existing furnace body 1 can be properly reduced, the internal space of the furnace body 1 is further reduced, the distance between high-temperature smoke and crude zinc liquid is shortened, the melting efficiency of crude zinc ingots is improved, the heat utilization efficiency in smoke is improved, two opposite ends of the furnace body 1 are respectively provided with a feed end 3 and a discharge end 4, the upper part of the feed end 3 of the furnace body 1 is provided with a feed inlet 5, zinc smelting raw materials such as crude zinc ingots are added into the furnace body 1 from the feed inlet 5, the bottom is provided with a slag discharge opening 6, impurities such as lead, iron and the like in the crude zinc liquid are discharged through the slag discharge opening 6, a smoke exhaust cavity 7 is arranged in the upper part of the discharge end 4 of the furnace body 1, the smoke exhaust cavity 7 is communicated with the inside of the furnace body 1 through a smoke exhaust hole 8, a smoke exhaust channel built by refractory bricks is arranged at the top of the furnace body 1, the refractory bricks can resist high temperature of 1580-1770 ℃, the creep rate is low, the heat storage capacity is strong, the high-temperature volume is stable, the damage is not easy, the service life is long, the smoke exhaust channel comprises a horizontal part 9 and a vertical part 10 which are communicated, the end part of the horizontal part 9 is communicated with the top of the smoke exhaust cavity 7, the lower end of the smoke exhaust pipe 2 is communicated with the upper end of the vertical part 10, a discharge hole 11 is arranged in the middle of the side wall of the furnace body 1 close to the discharge end 4, a burner mounting hole 12 is arranged on the side wall of the furnace body 1, and the burner is mounted on the burner mounting hole 12 and used for heating raw materials and crude zinc liquid in the furnace body 1.

When the furnace is used, the corresponding burner is arranged at the burner mounting port 12, raw materials such as crude zinc ingots and the like are added into the furnace body 1 through the feed port 5, the burner is started, the crude zinc ingots in the furnace body 1 are heated by flame, the crude zinc ingots are melted by heat and then discharged from the discharge port 5, a large amount of high-temperature smoke is generated in the continuous feeding of the lead tower, the crude zinc ingots are melted and the fuel is combusted, the high-temperature smoke flows in the furnace body 1, then enters the smoke discharging cavity 7 through the smoke discharging hole 8, sequentially enters the horizontal part 9 and the vertical part 10 from the smoke discharging cavity 7, and finally is discharged through the smoke discharging pipe 2. In the utility model, the traditional dust hood is omitted, the smoke is guided and dredged through the smoke discharging channel and the smoke discharging pipe 2, so that the smoke in the furnace body 1 can be smoothly discharged, the smoke discharging process is not influenced by external wind, the leakage of the smoke can be effectively prevented, the smoke collecting effect is good, the surrounding environment of the melting furnace can be ensured, the waste of waste heat in the smoke can be prevented, the utilization rate of energy sources in the whole system is improved, and the energy-saving effect is good; in the utility model, the smoke discharging channel built by the refractory bricks is arranged at the top of the furnace body 1, and the smoke firstly passes through the smoke discharging channel when discharged and reduces the temperature of the smoke before entering the smoke discharging pipe 2, so that the damage of the smoke discharging pipe 2 due to high temperature is prevented, the service life of the smoke discharging pipe 2 is prolonged, the maintenance frequency is reduced, and the long-term normal operation of the zinc rectifying system is ensured.

For convenient use, spare ports 13 are symmetrically arranged on the side wall of the furnace body 1 opposite to the discharge port 11, and when faults such as blockage and the like of the discharge port 5 cannot be used normally, crude zinc liquid in the furnace body 1 can be discharged through the spare ports 13.

The inside of horizontal part 9 is provided with heat exchange tube 14, be provided with spiral pipe 15 on the inner wall of horizontal part 9, heat exchange tube 14 and spiral pipe 15 are current heat transfer structure, and concrete structure can be selected according to actual conditions, when using, lets in coolant in heat exchange tube 14 and spiral pipe 15, and coolant when the flow in heat exchange tube 14 and spiral pipe 15, the heat of flue gas in the horizontal part 9 is absorbed to the coolant, when reducing flue gas temperature, absorbs the heat in the flue gas through coolant to recycle improves the utilization ratio of heat, reduces the loss of heat.

The side wall of the vertical part 10 is provided with an opening, a plugboard 16 is movably inserted into the opening, the plugboard 16 is inserted into the vertical part 10 from the opening, so that the effective flow area of smoke in the vertical part 10 is regulated, the smoke discharge rate is regulated, the working pressure in the furnace body 1 is regulated, and the balance of the internal pressure of the furnace body 1 is ensured.

Preferably, the length of the horizontal part 9 is one third to two thirds of the length of the furnace body 1, the flue gas flows in the horizontal part 9, the temperature of the flue gas can be reduced in the flowing process, the flue gas is prevented from being directly discharged to be in contact with the smoke exhaust pipe 2, the length of the horizontal part can be determined according to the actual situation, and the longer the length of the horizontal part 9, the higher the temperature of the flue gas is.

In order to be convenient for lead out the crude zinc liquid after melting, the outside of discharge gate 11 is provided with and connects silo 17, the discharge end that connects silo 17 is provided with guide chute 18, the top of guide chute 18 is provided with collection petticoat pipe 19, the crude zinc liquid in furnace body 1 flows to connect silo 17 from discharge gate 11, on flowing to guide chute 18 from connect silo 17, again flow to the plumbous tower from guide chute 18, for the continuous feed of plumbous tower, in actual production process, for convenient to use, still can set up the embolism in discharge gate 11 department, in the melting process of crude zinc ingot, use the embolism to block up feed gate 11, the discharge of crude zinc ingot is passed through to the embolism again to open the embolism and will crude zinc liquid after the crude zinc ingot melts.

Claims

1. The utility model provides an energy-saving crude zinc melting furnace of zinc rectification, includes furnace body (1) and exhaust pipe (2), its characterized in that, the both ends that furnace body (1) are relative are feed end (3) and discharge end (4) respectively, feed end (3) upper portion of furnace body (1) is provided with feed inlet (5), and the bottom is provided with row slag hole (6), the inside on furnace body (1) discharge end (4) upper portion is provided with fume chamber (7), communicates through fume vent (8) between the inside of fume chamber (7) and furnace body (1), the top of furnace body (1) is provided with the smoke channel that is built by firebrick, the smoke channel is including horizontal portion (9) and vertical portion (10) of intercommunication, the tip and the top intercommunication of fume chamber (7) of horizontal portion (9), the lower extreme and the upper end intercommunication of vertical portion (10) of exhaust pipe (2), be provided with discharge port (11) in the lateral wall middle part of being close to furnace body (1) discharge end (4), be provided with combustor (12) on the lateral wall of furnace body (1).

2. The zinc rectifying energy-saving crude zinc melting furnace according to claim 1 is characterized in that standby ports (13) are symmetrically arranged on the side wall of the furnace body (1) opposite to the discharge port (11).

3. The zinc rectifying energy-saving type crude zinc melting furnace according to claim 1 is characterized in that a heat exchange tube (14) is arranged in the horizontal part (9).

4. The zinc rectifying energy-saving type crude zinc melting furnace according to claim 1 is characterized in that a spiral tube (15) is arranged on the inner wall of the horizontal part (9).

5. The zinc rectifying energy-saving type crude zinc melting furnace according to claim 1, wherein an opening is formed in the side wall of the vertical portion (10), and a plugboard (16) is movably inserted into the opening.

6. The zinc rectifying energy-saving type crude zinc melting furnace according to claim 1 is characterized in that the length of the horizontal part (9) is one third to two thirds of the length of the furnace body (1).

7. The zinc rectifying energy-saving type crude zinc melting furnace according to claim 1, wherein a receiving groove (17) is arranged on the outer side of the discharging hole (11), a material guiding chute (18) is arranged at the discharging end of the receiving groove (17), and a smoke collecting hood (19) is arranged above the material guiding chute (18).