CN201277805Y - Returning type multiple hearth rotary kiln - Google Patents
Returning type multiple hearth rotary kiln Download PDFInfo
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- CN201277805Y CN201277805Y CNU200820015295XU CN200820015295U CN201277805Y CN 201277805 Y CN201277805 Y CN 201277805Y CN U200820015295X U CNU200820015295X U CN U200820015295XU CN 200820015295 U CN200820015295 U CN 200820015295U CN 201277805 Y CN201277805 Y CN 201277805Y
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Abstract
The utility model provides a multi-hearth rotary kiln of a return type. A kiln body with a gear ring and carrier roller rings is mounted between a kiln head box and a kiln tail box, and the lower part of the kiln body is connected in a rolling way with a driving machine and carrier rollers; a feeding hopper is arranged at the kiln head box, and a discharge hopper is arranged at the kiln tail box; the kiln body is formed by one section or the mutual connection of a plurality of sections, and a kiln head cylinder is arranged at one end of the kiln body and is connected with a kiln body cylinder; a heating cavity, a diffluence plate, a refluence cavity, a return plate and a heat-collecting cavity are sequentially arranged in the kiln body, the heat-collecting cavity converges to form a sintering cavity, and the kiln body and all inner cavity walls are made of refractory steel plates. Due to the multi-hearth structure of the return type, the utility model has the advantages of light and short kiln body, no ring sintered ring, high efficiency, energy saving and environmental protection and is applicable to the sintering of products, such as molybdena, and the like.
Description
Technical field
The utility model provides the device of the roasting of molybdenum oxide, specifically many thoraxes of Zigzag type rotary kiln.
Background technology
Molybdenum concntrate is the primary raw material of molybdenum deep processing through the product after the roasting, and then smelting becomes molybdenum or its alloy.Since nearly 50 years, the calcining kiln of home and abroad molybdenum oxide adopts two kinds of structures basically.The one, pass the traditional reflective kiln come from the former Soviet Union, directly use coal to be fuel, it is low to adopt this kiln to carry out the roasting yield of molybdenum oxide, and labor strength is big, high-temperature operation, smoke contamination is serious, is the kiln form of cancellation restriction on present China policy.The 2nd, the straight barrel type rotary kiln that adopted in recent years, though more progressive to some extent than reflecting kiln, its kiln body weight (thorax in adopt fire-brick lined), body of heater is long, floor space is big, supporting power big, the roasting rate of recovery is low.Because this kiln adopts refractory brick as inner lining material, thereby easy sintering of furnace lining or fusing, and forms the slag circle easily on furnace lining.Behind the ring formation, need stop kiln cooling, artificial clear kiln on the furnace lining, cause stopping production, waste time and energy, influence is produced.This all has a strong impact on guaranteeing production capacity and raising yield.Simultaneously because that refractory brick takies furnace volume is big and increase the weight of body of heater, thereby equipment dynamic need big, the power consumption height.And the straight barrel type rotary kiln adopts the straight barrel type structure, and frontal drag is little, and heat insulation effect is bad, and fuel consumption is high relatively, and molybdenum concentrate dust easily flies upward.
Summary of the invention
In order to overcome the shortcoming of existing molybdenum oxide roasting kiln, the utility model provides many thoraxes of Zigzag type rotary kiln.This kiln solves the technical problem of efficient, yield and the raising feature of environmental protection and energy saving by the multiple hearth and the mode of revolution roasting.
The scheme that the utility model technical solution problem is adopted is: between kiln head box and kiln boot the kiln body is installed, on the kiln body, be provided with gear ring, its underpart is connected with the driving machine gears engaged, on the kiln body of gear ring both sides, also be provided with the carrying roller circle and roll and be connected with carrying roller, be provided with feed hopper at the kiln body by the kiln head box position, partly be provided with discharge bucket by the kiln boot at the kiln body.The kiln body is a multistage, and interconnects.
The kiln body is connected with kiln body tube, tube and kiln body tube inside are provided with heating chamber shaking the head, be provided with flow distribution plate in the heating chamber front side, be provided with back cavity by flow distribution plate in the external rings week of heating chamber, be provided with the plate of turning back at the back cavity position of turning back, oppositely encircle by the plate of turning back and week to be provided with heat collector cavity, heat collector cavity converges the formation baking cavity.Kiln body and inner each chamber wall are made by heat-resisting steel sheet and plate.
Good effect: because the utility model has adopted many thoraxes of Zigzag type structure, so have the advantages that the kiln body is light, lack and be difficult for ring formation.Thereby, improved the rate of recovery and production efficiency, and save power and fuel, the feature of environmental protection is good.Suit in the application of calcining molybdenum ore concentrate extraction molybdenum.
Description of drawings
Fig. 1 is the utility model kiln structure figure
Fig. 2 is the utility model kiln body regenerator section structure chart
Among the figure, 1. kiln head box, 2. kiln boot, 3. kiln body, 3.1. kiln hood tube, 3.2. heating chamber, the 3.3. plate of turning back, 3.4. back cavity, 3.5. heat collector cavity, 3.6. flow distribution plate, 3.7. baking cavity, 4. gear ring, 5. driving machine, 6. carrying roller circle, 7. carrying roller, 8. feed hopper, 9. discharge bucket.
The specific embodiment
According to shown in Figure 1, between kiln head box 1 and kiln boot 2, kiln body 3 is installed, on the kiln body, be provided with gear ring 4, its underpart is connected with driving machine 5 gears engaged, on the kiln body of gear ring both sides, also be provided with carrying roller circle 6 and roll and be connected with carrying roller 7, be provided with feed hopper 8 at the kiln body by the kiln head box position, partly be provided with discharge bucket 9 by the kiln boot at the kiln body.
The kiln body is a multistage, and interconnects.
According to shown in Figure 2, kiln body 3 one ends are provided with kiln hood tube 3.1 and are connected with kiln body tube, tube and kiln body tube inside are provided with heating chamber 3.2 shaking the head, be provided with flow distribution plate 3.6 in the heating chamber front side, be provided with back cavity 3.4 by flow distribution plate in the external rings week of heating chamber, be provided with the plate 3.3 of turning back at the back cavity position of turning back, oppositely encircle by the plate of turning back and be provided with heat collector cavity 3.5 week, heat collector cavity converges and forms baking cavity 3.7.
Kiln body and inner each chamber wall are made by heat-resisting steel sheet and plate.
Thermal source adopts coal gas.
The course of work of the present utility model and characteristics.
Install: kiln head box and kiln boot are fixed on the kiln seat, and kiln head box is connected with corollary equipment gas generator appendix.The kiln boot is connected with corollary equipment drying oven feeding pipe.
The kiln body is installed between kiln head box and the kiln boot, and the transmission device that the external set gear ring of kiln is made up of gearbox, variable-speed motor provides power for gear ring and drives the running of kiln body.
Use: in the kiln body, the molybdenum concntrate (MoS after the dehydration
2) put in the cylindrical shell by the spiral boxhole and further to dewater, the molybdenum concntrate powder after the dehydration rotates by cylindrical shell, enters cylindrical shell and carries out the initial stage desulfurization, by screw propulsion material is sent into and is carried out desulfurization in mid-term and desulfurization in latter stage in the cylindrical shell.The molybdenum oxide that roasting is good enters the broken stage by the kiln hood boxhole.
The utility model adopts heat-resisting steels to make kiln body liner, and is more in light weight than refractory brick liner, volume is little and be difficult for ring formation on kiln body liner, reduces maintenance and blowing out number of times.The Zigzag type multiple hearth furnace body structure that is adopted prolongs heated time than straight barrel type kiln, has improved the rate of recovery of fuel availability and molybdenum oxide.
Through facts have proved that its characteristics are:
1, because the kiln body is light, has reduced the kiln body and rotated power consumption. The returning type multiple hearth structure shortens Kiln stop, kiln hood heat energy is fully used, and has reduced fuel consumption.
2, the kiln body shortens, and reduces floor space, can be convenient utilize the soil and subtract Few infrastructure project cost.
3, the heat-resisting steels liner has solved sintering and ring formation problem. Have economy, environmental protection, Energy-saving effect. Reduce simultaneously the roasting cost, alleviated labor strength, reduced the hilllock The position personnel.
Claims (2)
1, many thoraxes of Zigzag type rotary kiln, between kiln head box (1) and kiln boot (2), kiln body (3) is installed, on the kiln body, be provided with gear ring (4), its underpart is connected with driving machine (5) gears engaged, on the kiln body of gear ring both sides, also be provided with carrying roller circle (6) and roll and be connected with carrying roller (7), be provided with feed hopper (8) at the kiln body by the kiln head box position, partly be provided with discharge bucket (9) at the kiln body by the kiln boot, the kiln body is a multistage, and interconnect, it is characterized in that: kiln body one end is kiln hood tube (3.1) and is connected with kiln body tube, tube and kiln body tube inside are provided with heating chamber (3.2) shaking the head, be provided with flow distribution plate (3.6) in the heating chamber front side, be provided with back cavity (3.4) by flow distribution plate in the external rings week of heating chamber, be provided with the plate of turning back (3.3) at the back cavity position of turning back, oppositely encircle by the plate of turning back and be provided with heat collector cavity (3.5) week, heat collector cavity converges and forms baking cavity (3.7).
2, rotary kiln according to claim 1 is characterized in that: kiln body and inner each chamber wall and flap, flow distribution plate are made by heat resisting steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820015295XU CN201277805Y (en) | 2008-08-29 | 2008-08-29 | Returning type multiple hearth rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820015295XU CN201277805Y (en) | 2008-08-29 | 2008-08-29 | Returning type multiple hearth rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201277805Y true CN201277805Y (en) | 2009-07-22 |
Family
ID=40895389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820015295XU Expired - Fee Related CN201277805Y (en) | 2008-08-29 | 2008-08-29 | Returning type multiple hearth rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201277805Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502623A (en) * | 2011-09-19 | 2012-06-20 | 淮北市大华活性炭有限公司 | Reciprocating type rotary activation furnace |
-
2008
- 2008-08-29 CN CNU200820015295XU patent/CN201277805Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502623A (en) * | 2011-09-19 | 2012-06-20 | 淮北市大华活性炭有限公司 | Reciprocating type rotary activation furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20100829 |