CN1061692C - Preheating process of mixed sintered material or pellet material - Google Patents
Preheating process of mixed sintered material or pellet material Download PDFInfo
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- CN1061692C CN1061692C CN98103119A CN98103119A CN1061692C CN 1061692 C CN1061692 C CN 1061692C CN 98103119 A CN98103119 A CN 98103119A CN 98103119 A CN98103119 A CN 98103119A CN 1061692 C CN1061692 C CN 1061692C
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Abstract
The present invention relates to a preheating process particularly suitable for a mixed sintered material or a pellet material in the field of ironmaking, which belongs to the field of ironmaking. In the process, water vapor, hot air or hot exhaust gas is led in a trough at the upper end of the head section of a sintering machine so as to preheat the mixed sintered material or the pellet material, and enhance the temperature of the mixed sintered material or the pellet material; compared with the prior art, the process of the present invention has the characteristics of high heat utilization of water vapor, hot air or hot exhaust gas, obvious enhancement of the temperature of the mixed sintered material or the pellet material, low cost, high yield of sintering machines, etc.
Description
The invention belongs to the ironmaking field, be particularly suitable for the pre-heating mean of sinter mixture in the ironmaking field or mini-pellets material.
With water vapor, hot blast or hot waste gas preheating sinter mixture or mini-pellets material, make the temperature of compound or mini-pellets material raise, can improve sinter machine productivity, 10 ℃ of the every raisings of compound or mini-pellets material temperature, productivity of sintering machine can improve about 5%.Generally all require compound or mini-pellets material are preheating to more than the dew-point temperature, avoid crossing in the sinter bed formation of wet band, increase the ventilation property of sinter bed.
In the prior art, all adopt usually in the secondary drum mixer, to feed steam at present with preheating of mixed material (" iron ore agglomeration theory and technology ", metallurgical industry press, in April, 1992,170); The hot flue gas of the employing fuel gas buring that also has is pre-heat mixture (" agglomerates of sintered pellets ", 1983 (6), 63) in the secondary drum mixer; The utilization that also has for waste gas, with the hot blast of cooling agglomerate feed pre-heat mixture in the mixing machine (Chinese patent, CN1112164A).The prior art common drawback is that heat utilization efficiency is low, and the preheating of mixed material temperature is not high yet.To sinter machine, mixture temperature is generally all less than 60 ℃ through hopper cloth for compound.Raising to sinter machine productivity has certain influence.
The objective of the invention is to improve the temperature of pre-heat mixture of water vapor or mini-pellets material, improve the heat utilization efficiency of pre-heat mixture of water vapor or mini-pellets material, reduce cost, improve the productivity of sinter machine.
Base and above-mentioned purpose, the present invention feeds the temperature that water vapor improves compound or mini-pellets material in the hopper of sinter machine head upper end.Promptly sinter mixture or the mini-pellets material by last drum mixer or drum pelletizer output enters in the hopper of sinter machine head upper end, around the hopper and arbitrary position, hopper top or a plurality of position in compound or mini-pellets material, feed water vapor, add heat mixture or mini-pellets material, improve the temperature of compound or little ball material, compound or mini-pellets material carry out sintering by distributor cloth on sinter machine then, whole process is: 1. last procedure makes compound (or mini-pellets material), 2. enter last drum mixer or drum pelletizer, 3. enter hopper again, 4. arrive distributor again, 5. last cloth sintering on sinter machine, characteristics of the present invention are exactly to add water vapor in the 3rd step.
When adopting pre-heat mixture of water vapor or mini-pellets material in the methods of the invention, the temperature 100-500 of water vapor ℃, agglomerate water vapor consumption 5-100kg per ton.
The inventive method compared with prior art has following characteristics: it is nearest from sinter machine that the inventive method adds the place of water vapor, the thermosteresis minimum, and sinter mixture or mini-pellets material temperature improve significantly.Because the inventive method is directly water vapor to be fed in the hopper in compound or the mini-pellets material, make water vapor to contact with compound or mini-pellets material to greatest extent, make that the water vapor heat utilization efficiency is the highest, can reduce production costs effectively, because the preheating temperature of sinter mixture or mini-pellets material improves, make the utilization coefficient of sinter machine obviously improve simultaneously.
Embodiment.
1, adopt three batches of sinter mixtures of water vapor preheating according to the method for the invention, the gained result contrasts as follows:
(1) about temperature 400-450 ℃ of water vapor, under the agglomerate steam consumption 6-8kg situation per ton, adopt the inventive method mixture temperature to be elevated to 65-75 ℃ by original 50 ℃; Productivity of sintering machine 1.65-1.70t/m
2H, and prior art logical vaporization method in second drum mixer, mixture temperature is elevated to 55-60 ℃ by original 50 ℃, productivity of sintering machine 1.40-1.50t/m
2H.
(2), under the agglomerate steam consumption 25-30kg situation per ton, adopt the inventive method mixture temperature to be elevated to 90-100 ℃ by original about 45 ℃ about 300 ℃ of the temperature of water vapor; Productivity of sintering machine 1.78-1.85t/m
2H, and prior art logical vaporization method in second drum mixer, mixture temperature is elevated to 60-65 ℃ by original about 50 ℃, productivity of sintering machine 1.46-1.51t/m
2H.
(3), under the agglomerate steam consumption 85-95kg situation per ton, adopt the inventive method mixture temperature to be elevated to 125-135 ℃ by original 30 ℃ at temperature 100-150 ℃ of water vapor; Productivity of sintering machine 1.95-2.10t/m
2H, and prior art logical vaporization method in second drum mixer, mixture temperature is elevated to 75-85 ℃ by original 45 ℃, productivity of sintering machine 1.60-1.70t/m
2H.
2, adopt water vapor preheating mini-pellets material (＞3mm accounts for more than 60%) according to the method for the invention, the gained result contrasts as follows:
(1), under the agglomerate steam consumption 7kg situation per ton, adopt the inventive method mini-pellets material temperature to be elevated to 70 ℃, productivity of sintering machine 1.88t/m by original about 45 ℃ about 450 ℃ of the temperature of water vapor
2H; And prior art logical vaporization method in second drum mixer, mixture temperature is elevated to 50-55 ℃ by original 45 ℃, productivity of sintering machine 1.70t/m
2About h.
(2), under the agglomerate steam consumption 30kg situation per ton, adopt the inventive method mini-pellets material temperature to be elevated to 90-100 ℃ by original about 30 ℃ at temperature 200-250 ℃ of water vapor; Productivity of sintering machine 2.00-2.10t/m
2H, and prior art logical vaporization method in second drum mixer, mixture temperature is elevated to 60-65 ℃ by original about 45 ℃, productivity of sintering machine 1.70-1.80t/m
2H.
(3), under the agglomerate steam consumption 90kg situation per ton, adopt the inventive method mini-pellets material temperature to be elevated to about 130 ℃ by original about 35 ℃ about 130 ℃ of the temperature of water vapor; Productivity of sintering machine 2.30t/m
2H, and prior art logical vaporization method in second drum mixer, mixture temperature is elevated to about 75 ℃ by original 45 ℃, productivity of sintering machine 1.95t/m
2H.
3, adopt hot blast or hot waste gas preheating sinter mixture according to the method for the invention, the gained result is as follows:
(1) hot blast or heatrejection 400-450 ℃, the hot waste vapour consumption of agglomerate per ton 60m
3Situation under, adopt the inventive method mixture temperature to be elevated to 50-70 ℃ by original 30 ℃; Productivity of sintering machine 1.60-1.70t/m
2H.
(2), under the situation of agglomerate hot waste gas consumption 300m3 per ton, adopt the inventive method mixture temperature to bring up to 85-95 ℃, productivity of sintering machine 1.85-2.05t/m by original 45 ℃ hot blast or heatrejection 250-300 ℃
2H.
(3) hot blast or heatrejection 100-150 ℃, the hot waste vapour consumption of agglomerate per ton 700m
3Situation under, adopt the inventive method mixture temperature to bring up to 80-95 ℃, productivity of sintering machine 1.88-2.00t/m by original 50 ℃
2H; And prior art logical hot waste gas method in second drum mixer, mixture temperature is elevated to 60-70 ℃ by original about 50 ℃, productivity of sintering machine 1.58-1.65t/m
2H.
4, adopt hot blast or hot waste gas preheating mini-pellets material (＞3mm accounts for more than 60%) according to the method for the invention, the gained result is as follows:
(1) at 450 ℃ of hot blast or heatrejections, agglomerate hot blast per ton or hot waste gas consumption 55m
3Situation under, adopt the inventive method mini-pellets material temperature to be elevated to 65 ℃, productivity of sintering machine 1.75t/m by original 35 ℃
2H.
(2) at 300 ℃ of hot blast or heatrejections, agglomerate hot blast per ton or hot waste gas amount 300m
3Situation under, adopt the inventive method material temperature to bring up to 90 ℃, productivity of sintering machine 1.98t/m by original 50 ℃
2H.
(3) at 150 ℃ of hot blast or heatrejections, the hot waste vapour consumption of agglomerate per ton 650m
3Situation under, adopt the inventive method mini-pellets material temperature to bring up to 93 ℃, productivity of sintering machine 2.20t/m by original 40 ℃
2h
Claims (2)
1, the pre-heating mean of a kind of sinter mixture or mini-pellets material, it is characterized in that: around the hopper of water vapor on the sinter machine head and arbitrary position, hopper top or a plurality of position are fed compound or the mini-pellets material, to improve the preheating temperature of compound or mini-pellets material.
2, method according to claim 1 is characterized in that: the temperature of water vapor is 100-500 ℃, and agglomerate water vapor consumption per ton is 5-100Kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98103119A CN1061692C (en) | 1998-07-14 | 1998-07-14 | Preheating process of mixed sintered material or pellet material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98103119A CN1061692C (en) | 1998-07-14 | 1998-07-14 | Preheating process of mixed sintered material or pellet material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1214371A CN1214371A (en) | 1999-04-21 |
| CN1061692C true CN1061692C (en) | 2001-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98103119A Expired - Fee Related CN1061692C (en) | 1998-07-14 | 1998-07-14 | Preheating process of mixed sintered material or pellet material |
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| Country | Link |
|---|---|
| CN (1) | CN1061692C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644733B (en) * | 2013-11-27 | 2015-09-30 | 攀钢集团攀枝花钢钒有限公司 | A kind of hot gas sintering device and sintering method |
| CN105886753A (en) * | 2016-06-22 | 2016-08-24 | 中冶华天工程技术有限公司 | System and sintering process taking pellet return fines as embedded materials |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5312703A (en) * | 1976-07-22 | 1978-02-04 | Ishikawajima Harima Heavy Ind Co Ltd | Production of sintered ore |
| JPS58100638A (en) * | 1981-12-08 | 1983-06-15 | Nippon Kokan Kk <Nkk> | Preheating method for raw material to be sintered |
| JPS6089526A (en) * | 1983-10-19 | 1985-05-20 | Sumitomo Metal Ind Ltd | Production of sintered ore |
| JPH02525A (en) * | 1987-11-27 | 1990-01-05 | Canon Inc | Ink jet recorder, cap unit for the recorder and recovering method for ink jet head |
| JPH0328331A (en) * | 1989-06-26 | 1991-02-06 | Kawasaki Steel Corp | Pretreatment of raw material for sintering |
| CN1112164A (en) * | 1995-04-20 | 1995-11-22 | 冶金工业部钢铁研究总院 | Production method and apparatus for preheating mixed sinter material using sintered hot waste gas |
| JP3028331B2 (en) * | 1993-04-21 | 2000-04-04 | カトローダー，リミティド ライアビリティー カンパニー | Method and apparatus for controlling the introduction of a catalyst into an FCC unit |
-
1998
- 1998-07-14 CN CN98103119A patent/CN1061692C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5312703A (en) * | 1976-07-22 | 1978-02-04 | Ishikawajima Harima Heavy Ind Co Ltd | Production of sintered ore |
| JPS58100638A (en) * | 1981-12-08 | 1983-06-15 | Nippon Kokan Kk <Nkk> | Preheating method for raw material to be sintered |
| JPS6089526A (en) * | 1983-10-19 | 1985-05-20 | Sumitomo Metal Ind Ltd | Production of sintered ore |
| JPH02525A (en) * | 1987-11-27 | 1990-01-05 | Canon Inc | Ink jet recorder, cap unit for the recorder and recovering method for ink jet head |
| JPH0328331A (en) * | 1989-06-26 | 1991-02-06 | Kawasaki Steel Corp | Pretreatment of raw material for sintering |
| JP3028331B2 (en) * | 1993-04-21 | 2000-04-04 | カトローダー，リミティド ライアビリティー カンパニー | Method and apparatus for controlling the introduction of a catalyst into an FCC unit |
| CN1112164A (en) * | 1995-04-20 | 1995-11-22 | 冶金工业部钢铁研究总院 | Production method and apparatus for preheating mixed sinter material using sintered hot waste gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1214371A (en) | 1999-04-21 |
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