CN102071273A - Rotary hearth furnace for directly reducing coal base into iron - Google Patents
Rotary hearth furnace for directly reducing coal base into iron Download PDFInfo
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- CN102071273A CN102071273A CN2009103101802A CN200910310180A CN102071273A CN 102071273 A CN102071273 A CN 102071273A CN 2009103101802 A CN2009103101802 A CN 2009103101802A CN 200910310180 A CN200910310180 A CN 200910310180A CN 102071273 A CN102071273 A CN 102071273A
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- stove
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- metal plate
- against fire
- precaution against
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Abstract
The invention discloses a rotary hearth furnace for directly reducing coal base into iron, which is used for a novel process for directly reducing coal base into iron. An upper furnace tray is provided with a fireproof material layer; a supporting device is uniformly arranged on the outer circumference of the bottom surface of a lower furnace tray; the supporting device comprises a forged steel supporting roller, a supporting rotating wheel and a supporting track; a driving device is uniformly arranged on the outer circumference of the lower furnace tray; a ring seam is formed between the furnace tray and the furnace wall; and a water sealing device is arranged below the ring seam. The rotary hearth furnace is suitable for large rotary hearth furnace equipment (equipment with annual output of a million tons), and provides stable support for a large amount of raw materials placed in the rotary hearth furnace so as to realize high capacity.
Description
Technical field
The present invention relates to coal-based direct reduction iron production unit field, more particularly, relate to a kind of rotary hearth furnace that is used for coal-based direct reduction iron.
Background technology
Along with the continuous development of international steel industry and the quick raising of production capacity, opposite scarcity of coking coal resource and improving constantly of environmental requirement have also brought huge pressure for steel sustainable development.
Iron And Steel Industry adapts to the environmental protection requirement that improves day by day in order to break away from the yoke of coking coal resource shortage to the Iron And Steel Industry development, realizes energy-saving and cost-reducing; improve the steel products structure; realize the comprehensive utilization of resource, under this environment, the coal-based direct reduction iron technology is also promoted development fast.The industrial scale of coal-based direct reduction iron novel process is less at present, and the maximum in the world at present rotary hearth furnace coal base reduction iron U.S. IRON of power Inland Steel annual production is 500,000 tons, and existing equipment has restricted output.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, and a kind of coal-based direct reduction iron rotary hearth furnace that is used for the coal-based direct reduction iron novel process is provided.
Coal-based direct reduction iron rotary hearth furnace of the present invention, be achieved by following technical proposals, furnace bottom is made up of upper stone or metal plate for standing on a stove as a precaution against fire and lower stone or metal plate for standing on a stove as a precaution against fire, it is characterized in that, on the described upper stone or metal plate for standing on a stove as a precaution against fire refractory masses is set, described lower stone or metal plate for standing on a stove as a precaution against fire bottom surface excircle evenly is provided with bracing or strutting arrangement, and described lower stone or metal plate for standing on a stove as a precaution against fire excircle evenly is provided with drive unit, between described stone or metal plate for standing a stove on as a precaution against fire and the furnace wall circumferential weld is arranged, described circumferential weld below is provided with water seal arrangement.
Described bracing or strutting arrangement comprises the forged steel supporting roll, supports runner and supporting track, and lower stone or metal plate for standing on a stove as a precaution against fire bottom surface excircle is the forged steel supporting roll fixedly; Each forged steel supporting roll lower end fixed support runner; Described support runner is arranged in the supporting track, and supporting track is installed on the concrete foundation.
Described lower stone or metal plate for standing on a stove as a precaution against fire excircle evenly is provided with drive unit, described drive unit is made up of oil motor, step-down gear, transmitting gear, pin gear, the pin gear is changeing beneath stone or metal plate for standing a stove on as a precaution against fire excircle with Bolt Connection, described oil motor connects step-down gear and transmitting gear successively, transmitting gear and pin toothing.
Described water seal arrangement is that the circumferential weld below is provided with water sealed tank, water sealed tank is fixed on the supporting plate of furnace wall outside furnace stay, fixedly water seal cutter and rotation water seal cutter are set in the water sealed tank, and described fixedly water seal cutter is fixed on the furnace wall supporting plate, rotates the water seal cutter and is fixed on the lower stone or metal plate for standing on a stove as a precaution against fire backplate; Above-mentioned water seal cutter lower rim is positioned at the water sealed tank underwater.
The present invention is applicable to large-scale rotary hearth furnace equipment (annual production megaton equipment), provides firm support for placing a large amount of raw materials in the rotary hearth furnace, thereby realizes high production capacity; Place raw material on the upper stone or metal plate for standing on a stove as a precaution against fire refractory masses, heat resisting temperature can reach about 1000 ℃, can ensure under hot conditions the support to raw material.
Description of drawings
Fig. 1 structural representation of the present invention;
Fig. 2 support device structure synoptic diagram of the present invention;
Fig. 3 driving device structure synoptic diagram of the present invention;
Fig. 4 water seal arrangement structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
As shown in Figure 1, the rotary hearth furnace furnace bottom is made up of upper stone or metal plate for standing on a stove as a precaution against fire 14 and lower stone or metal plate for standing on a stove as a precaution against fire 15, refractory masses 16 is set on the described upper stone or metal plate for standing on a stove as a precaution against fire, described lower stone or metal plate for standing on a stove as a precaution against fire bottom surface excircle evenly is provided with bracing or strutting arrangement 12, described lower stone or metal plate for standing on a stove as a precaution against fire excircle evenly is provided with drive unit 11, between described stone or metal plate for standing a stove on as a precaution against fire and the furnace wall circumferential weld is arranged, described circumferential weld below is provided with water seal arrangement 13;
As shown in Figure 2, bracing or strutting arrangement comprises forged steel supporting roll 1, supports runner 2 and supporting track 3, and lower stone or metal plate for standing on a stove as a precaution against fire bottom surface excircle is the forged steel supporting roll fixedly; Each forged steel supporting roll lower end fixed support runner; Described support runner is arranged in the supporting track, and supporting track is installed on the concrete foundation 4;
As shown in Figure 3, described drive unit is made up of oil motor 31, step-down gear 32, transmitting gear 33, pin gear 34, the pin gear is changeing beneath stone or metal plate for standing a stove on as a precaution against fire excircle with Bolt Connection, and described oil motor connects step-down gear and transmitting gear successively, transmitting gear and pin toothing;
As shown in Figure 4, between described stone or metal plate for standing a stove on as a precaution against fire and the furnace wall circumferential weld is arranged, described circumferential weld below is provided with water sealed tank 23, water sealed tank is fixed on the supporting plate of furnace wall 22 outside furnace stays, fixedly water seal cutter 24 and rotation water seal cutter 25 are set in the water sealed tank, described fixedly water seal cutter is fixed on furnace wall 22 supporting plates, rotates the water seal cutter and is fixed on lower stone or metal plate for standing on a stove as a precaution against fire 21 backplates; Above-mentioned water seal cutter lower rim is positioned at the water sealed tank underwater.
Rotary hearth furnace in use lower stone or metal plate for standing on a stove as a precaution against fire is subjected to drive rotation, and supporting roll rotates with supporting in the supporting track of runner on concrete foundation simultaneously, for whole furnace bottom is done an effectively overfill protection.
Embodiment recited above is described the preferred embodiment for the present invention; be not that design of the present invention and scope are limited; under the prerequisite that does not break away from design philosophy of the present invention; common engineering technical personnel make technical scheme of the present invention in this area various distortion and improvement all should belong to protection scope of the present invention.
Claims (4)
1. coal-based direct reduction iron rotary hearth furnace, furnace bottom is made up of upper stone or metal plate for standing on a stove as a precaution against fire and lower stone or metal plate for standing on a stove as a precaution against fire, it is characterized in that, on the described upper stone or metal plate for standing on a stove as a precaution against fire refractory masses is set, described lower stone or metal plate for standing on a stove as a precaution against fire bottom surface excircle evenly is provided with bracing or strutting arrangement, described lower stone or metal plate for standing on a stove as a precaution against fire excircle evenly is provided with drive unit, between described stone or metal plate for standing a stove on as a precaution against fire and the furnace wall circumferential weld is arranged, and described circumferential weld below is provided with water seal arrangement.
2. coal-based direct reduction iron rotary hearth furnace according to claim 1 is characterized in that, described bracing or strutting arrangement comprises the forged steel supporting roll, supports runner and supporting track, and lower stone or metal plate for standing on a stove as a precaution against fire bottom surface excircle is the forged steel supporting roll fixedly; Each forged steel supporting roll lower end fixed support runner; Described support runner is arranged in the supporting track, and supporting track is installed on the concrete foundation.
3. coal-based direct reduction iron rotary hearth furnace according to claim 1, it is characterized in that, described drive unit is made up of oil motor, step-down gear, transmitting gear, pin gear, the pin gear is changeing beneath stone or metal plate for standing a stove on as a precaution against fire excircle with Bolt Connection, described oil motor connects step-down gear and transmitting gear successively, transmitting gear and pin toothing.
4. coal-based direct reduction iron rotary hearth furnace according to claim 1, it is characterized in that, described water seal arrangement is that the circumferential weld below is provided with water sealed tank, water sealed tank is fixed on the supporting plate of furnace wall outside furnace stay, fixedly water seal cutter and rotation water seal cutter are set in the water sealed tank, described fixedly water seal cutter is fixed on the furnace wall supporting plate, rotates the water seal cutter and is fixed on the lower stone or metal plate for standing on a stove as a precaution against fire backplate; Above-mentioned water seal cutter lower rim is positioned at the water sealed tank underwater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103101802A CN102071273A (en) | 2009-11-21 | 2009-11-21 | Rotary hearth furnace for directly reducing coal base into iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103101802A CN102071273A (en) | 2009-11-21 | 2009-11-21 | Rotary hearth furnace for directly reducing coal base into iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102071273A true CN102071273A (en) | 2011-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103101802A Pending CN102071273A (en) | 2009-11-21 | 2009-11-21 | Rotary hearth furnace for directly reducing coal base into iron |
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| CN (1) | CN102071273A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014215A (en) * | 2012-12-24 | 2013-04-03 | 重庆赛迪工业炉有限公司 | Rotary hearth furnace |
-
2009
- 2009-11-21 CN CN2009103101802A patent/CN102071273A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014215A (en) * | 2012-12-24 | 2013-04-03 | 重庆赛迪工业炉有限公司 | Rotary hearth furnace |
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Application publication date: 20110525 |