CN219839755U - Mixed fuel mineral powder sintering machine - Google Patents
Mixed fuel mineral powder sintering machine Download PDFInfo
- Publication number
- CN219839755U CN219839755U CN202321314018.XU CN202321314018U CN219839755U CN 219839755 U CN219839755 U CN 219839755U CN 202321314018 U CN202321314018 U CN 202321314018U CN 219839755 U CN219839755 U CN 219839755U
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- Prior art keywords
- sintering
- gas
- cover
- chamber
- coal powder
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- 238000005245 sintering Methods 0.000 title claims abstract description 149
- 239000000843 powder Substances 0.000 title claims abstract description 59
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 33
- 239000011707 mineral Substances 0.000 title claims abstract description 33
- 239000000446 fuel Substances 0.000 title claims abstract description 28
- 238000005507 spraying Methods 0.000 claims abstract description 27
- 239000003245 coal Substances 0.000 claims abstract description 25
- 230000000903 blocking effect Effects 0.000 claims abstract description 16
- 239000000779 smoke Substances 0.000 claims abstract description 7
- 239000011449 brick Substances 0.000 claims description 25
- 239000007921 spray Substances 0.000 claims description 13
- 239000002817 coal dust Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims 3
- 238000007664 blowing Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000001939 inductive effect Effects 0.000 abstract 7
- 239000007789 gas Substances 0.000 description 70
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000002737 fuel gas Substances 0.000 description 6
- 239000003034 coal gas Substances 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000008188 pellet Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model provides a mixed fuel mineral powder sintering machine, which comprises a mineral powder sintering machine body, a shrinkage sintering chamber, a hot air chamber, a gas spraying and burning device, a coal powder combustion-supporting device, an air inlet cover, an air inducing cover and an air blocking device, wherein the air inducing cover is arranged at the bottom of the mineral powder sintering machine body, the air inlet cover is connected with a blowing system, the air inducing cover is connected with a smoke exhausting system, the top of the air inducing cover is connected with the shrinkage sintering chamber, the top of the air inlet cover is connected with the bottom of the hot air chamber, the air blocking device is positioned between the air inlet cover and the air inducing cover and used for blocking leakage of hot air from the air inlet cover to the air inducing cover, the shrinkage sintering chamber is arranged at the top of the mineral powder sintering machine body and above the air inducing cover, the gas spraying and burning device and the coal powder combustion-supporting device are arranged at the opening of the right end of the shrinkage sintering chamber, and the opening of the right end of the shrinkage sintering chamber is adjacent to the left end of a flat top cover at the top cover of the top of the hot air chamber. The excellent effects are as follows: the sintering area is increased, and the method has the excellent characteristics of high sintering temperature, high sintering speed, high sintering quality, energy supply guarantee and the like.
Description
Technical Field
The utility model relates to the technical field of metallurgy, in particular to a mixed fuel mineral powder sintering machine.
Background
In the existing blast furnace ironmaking technology, iron ore is crushed and screened to obtain iron-rich mineral powder, the iron-rich mineral powder is sent into a mineral powder sintering machine to be sintered into sintered clinker through balling, the sintered clinker and coke are smelted in a blast furnace to prepare pig iron, the traditional sintered clinker production process is to make concentrate powder into raw pellets through a balling machine, and then send the raw pellets into a chain type sintering furnace to be sintered at high temperature, and the chain type sintering furnace calcination process has the following defects in practical application: the fuel used for sintering the mineral powder is water gas generated by an iron-making blast furnace or gas generated by a gas generator, and the heat energy generated by mixing and burning the gas and air sinters the mineral powder raw pellets into clinker for short, so that the single gas consumption causes unstable air pressure, and the heat value of the gas is low, the sintering time is short, and the like, so that the production capacity requirement of a modern mineral powder sintering machine cannot be met by using a single mineral powder sintering mode using the gas as fuel.
Disclosure of Invention
The utility model aims to provide a mixed fuel mineral powder continuous sintering machine.
The utility model aims at realizing the following mode, the equipment structure of the mixed fuel mineral powder sintering machine comprises a mineral powder sintering machine body, a shrinkage sintering chamber, a hot air chamber, a gas spraying device, a coal powder combustion supporting device, an air inlet cover, an air guiding cover and an air blocking device, wherein the air blocking device is arranged at the bottom of the mineral powder sintering machine body, the air inlet cover is connected with an air blowing system, the air guiding cover is connected with a smoke discharging system, the top of the air guiding cover is connected with the shrinkage sintering chamber, the top of the air inlet cover is connected with the bottom of the hot air chamber, the air blocking device is positioned between the air inlet cover and the air guiding cover and used for blocking leakage of hot air from the air inlet cover to the air guiding cover, the shrinkage sintering chamber is arranged at the top of the mineral powder sintering machine body and above the air guiding cover, the gas spraying device and the coal powder combustion supporting device are arranged at the opening at the right end of the shrinkage sintering chamber, and the opening at the right end of the shrinkage sintering chamber is adjacent to the left end of a flat top cover at the top of the hot air chamber.
The shrinkage type sintering chamber is composed of an inclined top cover, a sintering chamber side wall and a U-shaped sintering trolley, wherein the inclined top cover is connected with the sintering chamber side wall to form a right-high-left-low dustpan-shaped structure, the top of the shrinkage type sintering chamber is buckled with the U-shaped sintering trolley, the U-shaped sintering trolley is arranged below the shrinkage type sintering chamber, the bottom edge of the sintering chamber side wall is positioned at the inner side of the baffles at the two sides of the U-shaped sintering trolley, and the bottom edge of the sintering chamber side wall is in sliding sealing connection with the inner walls of the baffles at the two sides of the U-shaped sintering trolley.
The inclined top cover of the shrinkage type sintering chamber is formed by a brick hanging beam frame, brick hanging hooks and refractory bricks, the refractory bricks are hung below the brick hanging beam frame through the brick hanging hooks, and the refractory bricks are assembled to form the inclined top cover shape of the top of the shrinkage type sintering chamber.
A mixed fuel powdered ore sintering machine, gas jet firing device include frock perpendicular frock board, gas house steward, gas calandria, gas shower nozzle subassembly, gas flow automatically controlled valve, gas house steward one end is connected gas flow automatically controlled valve, the upper end of gas calandria is arranged and is connected with gas house steward, the gas shower nozzle subassembly is connected to the lower extreme of gas calandria, the right side of gas shower nozzle subassembly and frock perpendicular frock board is connected.
The gas spray head component consists of a flow distribution box and gas spraying plates, the lower end of each gas branch pipe in the gas discharge pipe is connected with the flow distribution box, a group of gas spraying plates are vertically arranged at the bottom of the flow distribution box, gas spraying holes are formed in the vertical edge of the left side of each gas spraying plate in the gas spraying plates, the groups of gas spraying plates form a transverse comb-shaped array, and all the gas spraying holes in the gas spray head component are opposite to the opening at the right end of the contracted sintering chamber.
A mixed fuel powdered ore sintering machine, buggy combustion-supporting device include coal powder jar, buggy jetting calandria and buggy nozzle, the lower extreme of every buggy jetting pipe in the buggy jetting calandria all is connected with the buggy nozzle, the buggy nozzle comprises frock perpendicular tooling plate and buggy deflector, the buggy deflector sets up in the left side of frock perpendicular tooling plate, frock perpendicular tooling plate and buggy deflector constitute the big lower extreme small flat mouthful funnel structure of mouth, the upper end and the buggy jar of buggy jetting calandria are connected, the lower extreme spout of buggy nozzle is located the top of the left efflux negative pressure zone of broach form gas shower nozzle subassembly.
The beneficial effects of the utility model are as follows: the coal gas jet nozzle is provided with the coal powder injection calandria component, coal powder and coal gas are fully mixed into the gas powder mixed fuel through the jet flow effect of the coal gas, and the gas powder mixed fuel is mixed with hot air from the hot air chamber for combustion, flame is elongated in the shrinkage type sintering chamber, so that the sintering area is increased, the sintering temperature is increased, the sintering speed is accelerated, the sintering quality is improved, the energy supply is diversified, the automation level is improved, and the coal gas injection calandria has the excellent characteristics of being good in energy conservation, high in efficiency, environment-friendly and the like.
Drawings
FIG. 1 is a schematic view of a partial structure of a mixed fuel ore powder sintering machine;
FIG. 2 is a schematic cross-sectional view of a constricted sintering chamber;
FIG. 3 is a schematic cross-sectional view of a hot air plenum;
FIG. 4 is a schematic diagram of the working principle of the gas burner and the pulverized coal combustion-supporting device;
FIG. 5 is a schematic top view of the structure of FIG. 4;
FIG. 6 is a left side view of the gas burner assembly;
FIG. 7 is a schematic view of the cross-sectional view taken along the direction A-A of FIG. 6;
fig. 8 is a left-hand structural schematic diagram of fig. 5.
Reference numerals illustrate: the device comprises an induced draft hood 1, an air inlet hood 2, a wind blocking device 3, a hot blast chamber 4, a hot blast chamber flat top cover 5, a gas header pipe 6, a gas flow electric control valve 7, a gas discharge pipe 8, a split box 9, a vertical tooling plate 10, a pulverized coal injection discharge pipe 11, a pulverized coal tank 12, an inclined top cover 13, a brick hanging hook 14, refractory bricks 15, a brick hanging beam frame 16, a shrinkage sintering chamber 17, a sintering chamber side wall 18, a U-shaped sintering trolley 19, a pulverized coal guide plate 22 and a mineral powder sintering machine body 23.
Detailed Description
The following describes a mixed fuel fine ore sintering machine of the present utility model in detail with reference to the drawings.
The utility model provides a mixed fuel mineral powder sintering machine, equipment structure includes mineral powder sintering machine body 23, shrink formula sintering chamber 17, hot blast room 4, gas jet firing device, coal dust combustion-supporting device, the air inlet cover 2, induced draft cover 1 and wind blocking device 3, wherein, wind blocking device 3 sets up in the bottom of mineral powder sintering machine body 23, air inlet cover 2 is connected with the blower system, induced draft cover 1 is connected with smoke evacuation system, induced draft cover 1 top is connected with shrink formula sintering chamber 17, air inlet cover 2 top is connected with hot blast room 4 bottom, wind blocking device 3 is located between air inlet cover 2 and induced draft cover 1, be used for blocking the leakage of hot-blast from air inlet cover 2 to induced draft cover 1, shrink formula sintering chamber 17 sets up in the top of mineral powder sintering machine body 23 and is located the top of induced draft cover 1, gas jet firing device and coal dust combustion-supporting device set up in the opening part of shrink formula sintering chamber 17 right-hand member, shrink formula sintering chamber 17 right-hand member opening part is adjacent with the flat top cap 5 left end at hot blast room 4 top.
The shrinkage type sintering chamber 17 is composed of an inclined top cover 13, a sintering chamber side wall 18 and a U-shaped sintering trolley 19, wherein the inclined top cover 13 is connected with the sintering chamber side wall 18 to form a right-high left-low dustpan-shaped structure, the top of the shrinkage type sintering chamber 17 is buckled, the U-shaped sintering trolley 19 is arranged below the shrinkage type sintering chamber 17, the bottom edge of the sintering chamber side wall 18 is positioned at the inner side of two side baffles of the U-shaped sintering trolley 19 and is in sliding sealing connection with the inner walls of the two side baffles of the U-shaped sintering trolley 19.
The inclined top cover 13 of the shrinkage sintering chamber 17 of the mixed fuel mineral powder sintering machine is formed by a brick hanging beam frame 16, brick hanging hooks 14 and refractory bricks 15, the refractory bricks 15 are hung below the brick hanging beam frame 16 through the brick hanging hooks 14, and the refractory bricks 15 are assembled to form the inclined top cover 13 at the top of the shrinkage sintering chamber 17.
A mixed fuel powdered ore sintering machine, gas jet firing device include frock perpendicular frock board 10, gas house steward 6, gas calandria 8, gas shower nozzle subassembly, gas flow automatically controlled valve 7, gas house steward 6 one end is connected gas flow automatically controlled valve 7, the upper end of gas calandria 8 is arranged and is connected with gas house steward, the gas shower nozzle subassembly is connected to the lower extreme of gas calandria 8, the right side of gas shower nozzle subassembly and frock perpendicular frock board 10 is connected.
The gas spray head component consists of a split box and gas spraying plates 21, the lower end of each gas branch pipe in the gas spray pipe 8 is connected with the split box 9, a group of gas spraying plates 21 are vertically arranged at the bottom of the split box 9, gas spraying holes 22 are formed in the vertical edge of the left side of each gas spraying plate in the gas spraying plates 21, each group of gas spraying plates 21 form a transverse comb-shaped array, and all the gas spraying holes 22 in the gas spray head component are opposite to the opening at the right end of the shrinkage sintering chamber 17.
A mixed fuel powdered ore sintering machine, buggy combustion-supporting device include coal dust jar 12, buggy jetting calandria 11 and buggy nozzle, the lower extreme of every buggy jetting pipe in the buggy jetting calandria 11 all is connected with the buggy nozzle, the buggy nozzle comprises frock perpendicular tooling plate 10 and buggy deflector 20, buggy deflector 20 sets up in the left side of frock perpendicular tooling plate 10, frock perpendicular tooling plate 10 and buggy deflector 20 constitute the big-end-up's of upper opening flat mouth funnel structure, the upper end of buggy jetting calandria 11 is connected with buggy jar 12, the lower extreme spout of buggy nozzle is located the top of the jet negative pressure zone of broach form gas shower nozzle subassembly left side.
Examples
The mixed fuel sintering step of the mixed fuel mineral powder sintering machine is as follows:
the mixed fuel sintering step of the mixed fuel mineral powder sintering machine is as follows:
the U-shaped sintering trolley on the mineral powder sintering machine body is driven by a driving device to perform clockwise brick movement, a U-shaped carriage on the upper part of the U-shaped sintering trolley is positioned at a lower discharge hole of a first storage bin, and raw materials are uniformly spread in the U-shaped carriage of the U-shaped sintering trolley according to a set raw material layer thickness under the control of an industrial computer;
when a U-shaped sintering trolley paved with a raw material layer passes through a first shrinkage sintering chamber to the right, a blower and a draught fan are started, coal dust and fuel gas are sprayed from a coal dust spraying calandria and a comb-shaped fuel gas spray nozzle, hot air from a hot air chamber passes through the comb-shaped fuel gas spray nozzle to be mixed with the coal dust and the fuel gas for combustion to the left, as a smoke exhaust hood below the shrinkage sintering chamber is connected with the draught fan, under the negative pressure of the draught fan, the coal dust sprayed by a coal dust spray nozzle is formed into combustible mixed gas by the negative pressure generated by the hot air blown by the hot air chamber and high-speed fuel gas spray jet sprayed by the comb-shaped fuel gas spray nozzle to be sprayed into the shrinkage sintering chamber for combustion, the flame is sintered at high temperature from top to bottom according to the internal heat preservation space of the shrinkage sintering chamber, and the flue gas generated after sintering of the sintering material enters the smoke exhaust hood downwards and is discharged through a smoke exhaust system; when the U-shaped sintering trolley for spreading the sintering material layer continuously moves rightwards to enter the first hot air chamber, as the air inlet cover below the hot air chamber is connected with the air blower, cold air passes through the sintering material layer under the action of the air blower, the sintering material and the cold air are subjected to heat exchange and heating to form hot air, the hot air enters the hot air chamber, and the burnt sintering mineral aggregate is cooled to enter the next spreading, sintering and cooling cycle;
in the flowing combustion process of the combustible mixed gas in the shrinkage type sintering chamber, an industrial control computer monitors the sintering temperature in the shrinkage type sintering chamber and the air inlet temperature of the hot air chamber in real time, and adjusts the gas flow electric control valve to control the flow of the mixed gas entering the shrinkage type sintering chamber so as to control the sintering temperature in the shrinkage type sintering chamber;
step (3) when the U-shaped sintering bench carries the sintered and cured first-layer clinker layer and passes through the second shrinkage sintering chamber to the right, the sintering step is the same as the step (3);
and (4) when the U-shaped sintering trolley moves rightwards to the right end of the annular sintering body, the sintering material in the U-shaped sintering trolley reaches the set thickness, the U-shaped sintering trolley automatically turns upside down, the sintering material falls into a sintering material collecting hopper under the action of gravity, and the sintering material is crushed by a crusher and sent to a blast furnace for iron making for later use.
Other than the features described in the specification and claims, are known to those skilled in the art.
Claims (6)
1. The utility model provides a mixed fuel mineral powder sintering machine, its characterized in that equipment structure includes mineral powder sintering machine body, shrink formula sintering chamber, the hot-blast chamber, gas is spouted and is burnt the device, coal dust combustion-supporting device, the air inlet cover, induced air cover and wind blocking device, wherein, wind blocking device sets up in the bottom of mineral powder sintering machine body, the air inlet cover is connected with the blower system, induced air cover is connected with smoke evacuation system, induced air cover top is connected with shrink formula sintering chamber, the air inlet cover top is connected with hot-blast chamber bottom, wind blocking device is located between air inlet cover and the induced air cover, be used for blocking the leakage of hot-blast from the air inlet cover to induced air cover, shrink formula sintering chamber sets up the top at mineral powder sintering machine body and is located the top of induced air cover, gas is spouted and is burnt the device and coal dust setting is in shrink formula sintering chamber right-hand member opening part, shrink formula sintering chamber right-hand member opening part is adjacent with the flat top cap left end at hot-blast chamber top.
2. A mixed fuel ore dust sinter machine as claimed in claim 1, wherein: the shrinkage type sintering chamber consists of an inclined top cover, a sintering chamber side wall and a U-shaped sintering trolley, wherein the inclined top cover is connected with the sintering chamber side wall to form a right high left low dustpan-shaped structure which is buckled at the top of the shrinkage type sintering chamber, the U-shaped sintering trolley is arranged below the shrinkage type sintering chamber, the bottom edge of the sintering chamber side wall is positioned at the inner side of the two side baffles of the U-shaped sintering trolley and is in sliding sealing connection with the inner walls of the two side baffles of the U-shaped sintering trolley.
3. A mixed fuel ore dust sinter machine as claimed in claim 2, wherein: the inclined top cover of the shrinkage sintering chamber consists of a brick hanging beam frame, brick hanging hooks and refractory bricks, wherein the refractory bricks are hung below the brick hanging beam frame through the brick hanging hooks, and the refractory bricks are assembled to form the inclined top cover shape of the top of the shrinkage sintering chamber.
4. A mixed fuel ore dust sinter machine as claimed in claim 1, wherein: the gas spraying and burning device comprises a tool vertical tooling plate, a gas main pipe, a gas calandria, a gas spray head assembly and a gas flow electric control valve, wherein one end of the gas main pipe is connected with the gas flow electric control valve, the upper end of the gas calandria is connected with the gas main pipe in a row, the lower end of the gas calandria is connected with the gas spray head assembly, and the gas spray head assembly is connected with the right side of the tool vertical tooling plate.
5. The mixed fuel ore powder sintering machine according to claim 4, wherein: the gas nozzle assembly consists of a flow distribution box and gas spraying plates, the lower end of each gas branch pipe in the gas exhaust pipe is connected with the flow distribution box, a group of gas spraying plates are vertically arranged at the bottom of the flow distribution box, gas spraying holes are formed in the vertical edge of the left side of each gas spraying plate in the gas spraying plates, the groups of gas spraying plates form a transverse comb-shaped array, and all the gas spraying holes in the gas nozzle assembly are opposite to the opening at the right end of the shrinkage sintering chamber.
6. The mixed fuel ore powder sintering machine according to claim 4, wherein: the coal powder combustion-supporting device comprises a coal powder tank, a coal powder injection calandria and a coal powder nozzle, wherein the lower end of each coal powder injection pipe in the coal powder injection calandria is connected with the coal powder nozzle, the coal powder nozzle consists of a tool vertical tooling plate and a coal powder guide plate, the coal powder guide plate is arranged on the left side of the tool vertical tooling plate, the tool vertical tooling plate and the coal powder guide plate form a flat-mouth funnel-shaped structure with a large upper mouth and a small lower mouth, the upper end of the coal powder injection calandria is connected with the coal powder tank, and a lower end nozzle of the coal powder nozzle is positioned above a jet negative pressure area on the left side of the comb-shaped gas nozzle assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321314018.XU CN219839755U (en) | 2023-05-26 | 2023-05-26 | Mixed fuel mineral powder sintering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321314018.XU CN219839755U (en) | 2023-05-26 | 2023-05-26 | Mixed fuel mineral powder sintering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219839755U true CN219839755U (en) | 2023-10-17 |
Family
ID=88300106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321314018.XU Active CN219839755U (en) | 2023-05-26 | 2023-05-26 | Mixed fuel mineral powder sintering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219839755U (en) |
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2023
- 2023-05-26 CN CN202321314018.XU patent/CN219839755U/en active Active
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