CN202440320U - Gas-distributing and cooling system for rotary kiln - Google Patents
Gas-distributing and cooling system for rotary kiln Download PDFInfo
- Publication number
- CN202440320U CN202440320U CN2012200422103U CN201220042210U CN202440320U CN 202440320 U CN202440320 U CN 202440320U CN 2012200422103 U CN2012200422103 U CN 2012200422103U CN 201220042210 U CN201220042210 U CN 201220042210U CN 202440320 U CN202440320 U CN 202440320U
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- China
- Prior art keywords
- rotary kiln
- kiln
- gas
- cooling system
- flame retardant
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Abstract
The utility model relates to a gas-distributing and cooling system for a rotary kiln, which comprises a rotary kiln barrel body, a kiln head and a kiln tail, wherein a flame retardant coating is arranged in the rotary kiln barrel body; a cooling water jacket is arranged between the rotary kiln barrel body and the flame retardant coating; the cooling water jacket comprises an water inlet pipe, a water outlet pipe and a main cavity; and the gas-distributing and cooling system further comprises a gas conveying device which comprises a master gas conveying pipe, a branched gas conveying pipe and a gas outlet spray nozzle. The gas-distributing and cooling system has the advantages that: the additionally-arranged gas conveying device sprays hydrogen gas out of the gas outlet spray nozzle after passing through a gas distribution disc, the master gas conveying pipe and the branched gas conveying pipe, and the hydrogen gas blows materials, so that the materials are reacted and reduced more sufficiently; and the hydrogen gas can help to combust, further improve the reducing temperature and the reducing efficiency and shorten the reaction time; because the cooling water jacket is additionally arranged, the flame retardant coating is cooled, the replacement frequency of the flame retardant coating is reduced, the cost is reduced, the rotary kiln barrel body is free from being corroded, and the service life of the rotary kiln barrel body is prolonged; and the barbed flame retardant coating is additionally arranged at a discharging port of the kiln head of the rotary kiln, therefore the kiln head is effectively prevented from being damaged by high-temperature materials.
Description
Technical field
The utility model belongs to metallurgical technology field, is specifically related to a kind of rotary kiln distribution and cooling system.
Background technology
In the production of metallurgy industry, chemical industry inorganic salt industry, cement building material industry, all can use rotary kiln.In smelting process; Because the temperature in the cylinder of rotary kiln is up to thousands of degree even higher; And production process need keep continuous regime, so although the cylinder of rotary kiln inwall is provided with flame retardant coating, under the effects such as heat erosion that the high-temperature material in cylinder of rotary kiln continues and acid and alkali corrosion; Still can make flame retardant coating and cylinder of rotary kiln constantly encroached on and cause its damage, need correspondingly change after using certain hour.Simultaneously, cause the loss of a large amount of heat energy.Especially the discharge port place of rotary kiln end is because of heat erosion and the acid and alkali corrosion that directly suffers high-temperature material, so damaged through regular meeting and influence production.Like this, carry out the replacing of flame retardant coating, not only will delay the duration, influence production efficiency, and increase huge production cost; And then say it, if the cylinder of rotary kiln sustain damage, that just will further strengthen production cost, reduce working efficiency.And the great amount of heat energy loss causes energy dissipation.
Bauxite extracts in the process of aluminum oxide, produces a large amount of red muds; In the red soil nickel ore wet method leaching process, produced a large amount of acid sludges, caused the pollution of environment and the waste of resource.In the bauxite alkali sintering process,, make reaction not go on, thereby caused the leaching rate of alumina reduction because high temperature reduction has caused the alkali evaporation; When using kiln process to carry out iron oxide reduction, because low temperature just causes the reduction ratio of red stone not enough; Under the condition that sodium exists, the speeding up of hydrogen reducing red stone, thus realize low-temperature reduction, reduction ratio is higher than other reductive agent.Simultaneously avoid the alkali evaporation effectively, made reaction normally carry out, improved the yield of aluminum oxide, improved the reduction ratio of red stone simultaneously.Particularly to needle-like ferro-aluminum ore deposit, present Bayer process, sintering process etc. can't realize.
The utility model content
The technical problem that the utility model will solve is: overcome the deficiency of prior art, a kind of rotary kiln distribution and cooling system are provided, it can effectively reduce the temperature of cylinder of rotary kiln and flame retardant coating, prolongs its work-ing life, thereby has reduced production cost; Realize low-temperature reduction, improve aluminum oxide yield and iron oxide reduction rate.
The utility model solves the technical scheme that its technical problem adopted: rotary kiln distribution and cooling system; Comprise cylinder of rotary kiln, kiln hood and kiln tail; Be provided with flame retardant coating in the said cylinder of rotary kiln, it is characterized in that: between said cylinder of rotary kiln and said flame retardant coating, a watercooling jacket is set, said watercooling jacket includes water pipe, rising pipe and main cavity; The water outlet that the feed-water end of said inhalent siphon and is gone into the supply mains is connected, and its water side is communicated with said main cavity; The feed-water end of said rising pipe is arranged in the said main cavity, and its water side is communicated with an outfall sewer;
Also comprise an air delivery device, said air delivery device comprises that a gas transmission main, a gas transmission are in charge of, the shower nozzle of giving vent to anger, and said gas transmission main is arranged at said kiln hood, is in charge of with said gas transmission to be communicated with; Said gas transmission is in charge of that to be arranged in said flame retardant coating inner, with the said shower nozzle UNICOM of giving vent to anger.
Preferably, the water-in that said inhalent siphon is gone into the supply mains connects a swivel joint, and the water outlet of said inhalent siphon is arranged at the centre of kiln tail; One end of said outfall sewer is in the heart position of kiln hood and said rising pipe UNICOM, and the other end passes to kiln hood, and connects a swivel joint; Said gas transmission main one end is in charge of with said gas transmission in the centre of said kiln hood and is communicated with, and the other end connects a gas distribution plate.
Preferably, the said shower nozzle of giving vent to anger is a Duckbill type, and its air outlet is towards kiln hood.
Preferably, said Duckbill type is given vent to anger shower nozzle by ceramic material.
Preferably, to be in charge of be more than one in said gas transmission.
Preferably, the said shower nozzle of giving vent to anger is arranged at apart from 10～50 meters of said kiln hood.
Preferably, set firmly prickle, on said prickle, cover flame retardant coating at said kiln hood top.
Compared with prior art, the beneficial effect of the utility model is: owing between cylinder of rotary kiln and flame retardant coating, set up watercooling jacket, both flame retardant coating was lowered the temperature; Reduce it and change number of times; Reduced cost, make again cylinder of rotary kiln especially kiln hood avoid corroding, prolonged its work-ing life; The discharge port place of rotary kiln end has set up prickle and has added and cover flame retardant coating, has effectively prevented the destruction of high-temperature material to kiln hood.Watercooling jacket has absorbed a large amount of heat energy, has effectively improved the heat energy utilization rate; When material is in the cylinder of rotary kiln bottom; The air delivery device of setting up is in charge of added hydrogen through gas distribution plate, gas transmission main, gas transmission, from the shower nozzle of giving vent to anger, spray, and the hydrogen of ejection can blow afloat material, dispel; Make the material gas-solid reaction normally to carry out, reduce more abundant; And hydrogen has improved reduction efficiency, has shortened the reaction times.
Description of drawings
Fig. 1 is the structure sectional view of the utility model embodiment;
Fig. 2 is the left view of Fig. 1.
Be labeled as among the figure:
1, cylinder of rotary kiln; 2, kiln hood; 3, kiln tail; 4, flame retardant coating; 51, inhalent siphon; 52, rising pipe; 53, main cavity; 54, go into the supply mains; 55, outfall sewer; 6, swivel joint; 71, gas transmission main; 72, gas transmission is in charge of; 73, the shower nozzle of giving vent to anger; 8, gas distribution plate; 9, prickle.
Embodiment
Below in conjunction with accompanying drawing embodiment, the utility model done further describing:
As shown in Figure 1; Rotary kiln distribution and cooling system comprise cylinder of rotary kiln 1, kiln hood 2 and kiln tail 3, are provided with flame retardant coating 4 in the said cylinder of rotary kiln 1; Between said cylinder of rotary kiln 1 and said flame retardant coating 4, watercooling jacket is set; Said watercooling jacket includes water pipe 51, rising pipe 52, main cavity 53, goes into supply mains 54, outfall sewer 55, and the feed-water end of inhalent siphon 51 is connected with the water outlet of going into supply mains 54, and its water side is communicated with said main cavity 53; The feed-water end of said rising pipe 52 is arranged in the said main cavity 53, and its water side is communicated with outfall sewer 54;
One end of outfall sewer 55 is in kiln hood 2 centres places and said rising pipe 52 UNICOMs, and the other end passes to kiln hood 2, and connects swivel joint 6; The water-in of said inhalent siphon 51 connects another swivel joint 6, and the water outlet of said inhalent siphon 51 is arranged at the centre of kiln tail 3;
Also comprise air delivery device, said air delivery device comprises that gas transmission main 71, gas transmission are in charge of 72, the shower nozzle 73 of giving vent to anger, and said gas transmission main 71 is arranged at said kiln hood 2, is in charge of 72 with said gas transmission and is communicated with; It is more than one that said gas transmission is in charge of 72, is arranged in said flame retardant coating 4 inside, with said shower nozzle 73 UNICOMs of giving vent to anger; Said gas transmission main 71 1 ends are in charge of 72 in the centre of said kiln hood 2 with said gas transmission and are communicated with, and the other end connects gas distribution plate 8.
The said shower nozzle 73 of giving vent to anger is Duckbill type, and by ceramic material, its air outlet is arranged on and 10～50 meters of said kiln hood 2 distances towards kiln hood 2; Said kiln hood 2 tops set firmly prickle 9, on said prickle 9, cover flame retardant coating 4.
The main cavity 53 of watercooling jacket just is meant that part of watercooling jacket between kiln hood 2, kiln tail 3.
The above; It only is the preferred embodiment of the utility model; Be not to be the restriction of the utility model being made other form, any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But every the utility model technical scheme content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of the utility model technical scheme according to the technical spirit of the utility model.
Claims (7)
1. rotary kiln distribution and cooling system; Comprise cylinder of rotary kiln, kiln hood and kiln tail; Be provided with flame retardant coating in the said cylinder of rotary kiln, it is characterized in that: between said cylinder of rotary kiln and said flame retardant coating, a watercooling jacket is set, said watercooling jacket includes water pipe, rising pipe and main cavity; The water outlet that the feed-water end of said inhalent siphon and is gone into the supply mains is connected, and its water side is communicated with said main cavity; The feed-water end of said rising pipe is arranged in the said main cavity, and its water side is communicated with an outfall sewer;
Also comprise an air delivery device, said air delivery device comprises that a gas transmission main, a gas transmission are in charge of, the shower nozzle of giving vent to anger, and said gas transmission main is arranged at said kiln hood, is in charge of with said gas transmission to be communicated with; Said gas transmission is in charge of that to be arranged in said flame retardant coating inner, with the said shower nozzle UNICOM of giving vent to anger.
2. rotary kiln distribution according to claim 1 and cooling system is characterized in that: the said supply mains's of going into water-in connects a swivel joint, and the said supply mains's of going into water outlet is arranged at the centre of kiln tail;
One end of said outfall sewer is in the centre of kiln hood and said rising pipe UNICOM, and the other end passes to kiln hood, and connects a swivel joint;
Said gas transmission main one end is in charge of with said gas transmission in the centre of said kiln hood and is communicated with, and the other end connects a gas distribution plate.
3. rotary kiln distribution according to claim 2 and cooling system is characterized in that: the said shower nozzle of giving vent to anger is a Duckbill type, and its air outlet is towards kiln hood.
4. rotary kiln distribution according to claim 3 and cooling system is characterized in that: said Duckbill type is given vent to anger shower nozzle by ceramic material.
5. rotary kiln distribution according to claim 4 and cooling system is characterized in that: it is more than one that said gas transmission is in charge of.
6. rotary kiln distribution according to claim 5 and cooling system is characterized in that: the said shower nozzle of giving vent to anger is arranged at apart from 10～50 meters of said kiln hood.
7. rotary kiln distribution according to claim 6 and cooling system is characterized in that: set firmly prickle at said kiln hood top, on said prickle, cover flame retardant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200422103U CN202440320U (en) | 2012-01-21 | 2012-01-21 | Gas-distributing and cooling system for rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200422103U CN202440320U (en) | 2012-01-21 | 2012-01-21 | Gas-distributing and cooling system for rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202440320U true CN202440320U (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200422103U Expired - Fee Related CN202440320U (en) | 2012-01-21 | 2012-01-21 | Gas-distributing and cooling system for rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202440320U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583463A (en) * | 2012-01-21 | 2012-07-18 | 胡长春 | Rotary kiln gas-distribution and cooling system |
| CN105890347A (en) * | 2016-04-29 | 2016-08-24 | 青岛智邦炉窑设计研究有限公司 | Rotary kiln type reduction roasting device and process |
| CN105937764A (en) * | 2016-06-22 | 2016-09-14 | 中冶焦耐工程技术有限公司 | Hot wind blowing material dispersing device and using method thereof |
| CN106931771A (en) * | 2017-04-21 | 2017-07-07 | 洛阳富方重工机械有限公司 | A kind of rotary kiln molybdenum oxide roasting system of utilization waste heat to the oxygen supply of material bottom |
-
2012
- 2012-01-21 CN CN2012200422103U patent/CN202440320U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583463A (en) * | 2012-01-21 | 2012-07-18 | 胡长春 | Rotary kiln gas-distribution and cooling system |
| CN105890347A (en) * | 2016-04-29 | 2016-08-24 | 青岛智邦炉窑设计研究有限公司 | Rotary kiln type reduction roasting device and process |
| CN105890347B (en) * | 2016-04-29 | 2018-04-10 | 青岛智邦炉窑设计研究有限公司 | A kind of rotary kiln type reduction roasting device and technique |
| CN105937764A (en) * | 2016-06-22 | 2016-09-14 | 中冶焦耐工程技术有限公司 | Hot wind blowing material dispersing device and using method thereof |
| CN106931771A (en) * | 2017-04-21 | 2017-07-07 | 洛阳富方重工机械有限公司 | A kind of rotary kiln molybdenum oxide roasting system of utilization waste heat to the oxygen supply of material bottom |
| CN106931771B (en) * | 2017-04-21 | 2023-07-25 | 洛阳富方重工机械有限公司 | Rotary kiln molybdenum oxide roasting system for supplying oxygen to bottom of material by utilizing waste heat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20160121 |
|
| EXPY | Termination of patent right or utility model |