CN1769827A - Combined respectively driving and segmented external heating rotary kiln - Google Patents
Combined respectively driving and segmented external heating rotary kiln Download PDFInfo
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- CN1769827A CN1769827A CN 200410046891 CN200410046891A CN1769827A CN 1769827 A CN1769827 A CN 1769827A CN 200410046891 CN200410046891 CN 200410046891 CN 200410046891 A CN200410046891 A CN 200410046891A CN 1769827 A CN1769827 A CN 1769827A
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- rotary kiln
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Abstract
The invention discloses a built-up segment-driving external heating rotary kiln in the coal-measure kaolin rock calcination, which is characterized by the following: the barrel of external heating rotary kiln is divided into many segments; each segment is mated with driving device, heating device and bearing device; the coupling device is set in two joint parts, which contains material conveying device. The invention can produce many kinds of superior production, which is easy to accomplish automatic control to improve productivity.
Description
Technical field
The present invention relates to a kind of outer heating rotary kiln, especially for the outer heating rotary kiln of calcining coal-series kaolinite.
Prior art
The kaolin families product has been widely used, at present existing more than 70 kind of China.Calcined kaolin wherein has the special nature that common kaolin product does not have, and is the important source material of industries such as papermaking, coating, rubber, plastics and cable.
Calcined kaolin can be made raw material with coal series kaolin rock (gangue), processes through distinctive technological process.China has abundant coal series kaolin rock resource, but the production technology of calcined kaolin falls behind, and has many problems.The production technology backwardness mainly is the restriction that fallen behind by equipment.
The critical process that calcined kaolin is produced is heat treatment (calcining) modification, and key equipment is a calciner---kiln.For a long time because China is not used in the special-purpose kiln that calcined kaolin is produced, development work is at the early-stage, thereby the enterprise that produces this series products just can only adopt the calciner of relevant industries (mainly be pottery and metallurgical), as tunnel cave, down-draft kiln and inside burning type rotary kiln etc.When these calciners are used to produce the calcined kaolin products of ultra-fine, high whiteness, all there are comparatively distinct issues, had a strong impact on the quality and the stability thereof of product.Recent years again from external introduced several outside the heating rotary kiln.
All existing rotary structures comprise equipment such as cylindrical shell, heater, drive unit, supporting arrangement, kiln hood cover, kiln hood.
When all these calciners are used to produce the calcined kaolin of ultra-fine, high whiteness, all exist problem to be solved.
When adopting tunnel cave or down-draft kiln, material be adorned casket Bowls or be made the anvil base and reenter the kiln calcining, not only unnecessary workload is big, and heat transfer efficiency is low, thereby production efficiency is low, and the quality of product is inhomogeneous, the quality instability will realize that the serialization of production process and automation are also difficult.
Rotary kiln is compared with preceding two kinds of kilns, and the thermal efficiency is higher, can carry out continous way production, and the electrical control degree is higher, and automatization level also can be improved.Especially after having adopted the rotary kiln of outer heating, solved the pollution of the combustion product of fuel and wearing and tearing, broken kiln lining material, made rotary kiln be applicable to the production of high-grade calcined kaolin products more material.
But the rotary kiln that adopts is similar with the long-term traditional rotary kiln that uses of relevant industries at present.After copying mechanically,, substantial improvement is not made in the design of rotary kiln, thereby also existed some that problem to be solved is arranged according to the basic demand of nonmetallic ore calcination process such as coal series kaolin rock.
These problems mainly are: the production of (1) high-grade calcined kaolin products is to [the temperature----time of calcination process] requirement of curve and kiln atmosphere is comparatively strict, and the rotary kiln that adopts at present, the preheating zone of calcination process, burning zone and salband are connected as a single entity, in a single day the design parameter of rotary kiln is determined when design, material just can only be regulated (fine setting) in the translational speed and the time of staying of each band in very little scope, and can not independent regulation; (2) can not be according to the different requirements of material to preheating zone and burning zone atmosphere, by regulate obtain respectively with required different air mass flow (no matter air be forward flow or reverse flow); (3) be difficult to realize the real-time observing and controlling of technological parameters such as temperature, time and kiln atmosphere, thereby be difficult to strictness, keep the stability of technological parameter and process exactly; (4) when the chemical composition of raw material changes the kind that maybe will change product, the trade mark, adjusting process parameter and device parameter easily; (5) production capacity is lower; (6) will improve equipment capacity, thereby when need strengthening specification of equipment, the amplification of equipment manufacturing cost is bigger.
Summary of the invention
Technical scheme of the present invention is: cylindrical shell is divided into multistage, and every section is disposed drive unit, heater and supporting arrangement; Two sections connection places are provided with coupling arrangement, and this coupling arrangement comprises device for transporting objects.
Device for transporting objects can be designed to helix transporting device.
Particularly, wherein the inwall of one section cylindrical shell end is fixed with conveyor screw two sections cylindrical shell connection places, and this conveyor screw stretches in another section cylindrical shell, is with fixing hopper outside conveyor screw.
Another improvement is that an end of a forward cylindrical shell has up receiving opening on hopper.
Device for transporting objects also can be designed to be provided with scraper-trough conveyer two sections cylindrical shell connection places; Scraper-trough conveyer docks with two sections cylindrical shell sealings.Material is gone into the hypomere cylindrical shell by the deadweight slide.
For obtaining good sealing effectiveness, between two sections, can be provided with and maintain static moving connection cover; The cylindrical shell end with connect the cover connection place be provided with sealing device.
Cylindrical shell can be designed to have two sections of difference in functionality, is called preheating section and calcining section, joins cooler in addition after the calcining section.
The structure of preheating section and calcining section is basic identical, all comprises one section cylindrical shell, two cover supporting arrangements and a cover drive unit.The quality of cylindrical shell affacts on the supporting arrangement by rolling ring.Supporting arrangement is made up of support roller and base.Drive unit drives cylindrical shell and rotates by gear, gear ring.Drive unit is made up of motor and decelerator or speed changer.Preheating section and calcining section all are provided with a heating furnace between two cover supporting arrangements, this section cylindrical shell is heated.The type of heating furnace and structure, because of the difference of thermal source (fuel or electric energy) different.
Further improving is that barrel designs is to have three sections of difference in functionality, is called preheating section, calcining section and cooling section.
The formation of cooling section is also the same substantially, but what dispose between the supporting arrangements at two covers is bosh.
A place is provided with the inlet air house steward at calcining section material outlet, and is communicated with coupling arrangement between preheating section being provided with branch branch wind pipe and calcining section on the inlet air house steward.Air or through the air of cooling section preheating, part is sent into the calcining section from the inlet air house steward, part is drawn through a minute branch wind pipe, enters in the kiln from coupling arrangement between calcining section and the preheating section again, sends into the preheating section cylindrical shell.The air mass flow of calcining section and preheating section thereby can regulate respectively.
An end and kiln hood that preheating section is in kiln tail (side feeds intake) link, and an end and kiln hood cover that cooling section is in kiln hood (exit side) link, and all there is the sealing device sealing connection place.The kiln hood also links with charging (feeding) equipment and tail wind treating apparatus.Kiln hood is covered with discharging opening and blasts the air intake vent of air.
In all places that need measure technological parameter or relevant devices parameter, different types of sensor or instrument are installed all.Whole combined type heats the running and the calcination process of rotary kiln outward, all implements real-time observing and controlling at a central control device by electronic computer.
Combined type provided by the invention drive segment respectively heats rotary kiln outward, and particularly using it for the coal series kaolin rock is raw material when producing high-grade calcined kaolin, and following remarkable superiority is arranged:
1, in each assembled unit of this rotary kiln, heating-up temperature, technological parameter such as heat time heating time and kiln atmosphere and relevant devices parameter, all can regulate independently respectively, whole system can be by the real-time observing and controlling of electronic computer, thereby make calcination process can be strict, carry out according to the requirement of material calcining mechanism exactly, produce expensive goods, its quality and stability can reliably be guaranteed.
2,, just can make production line realize " line fecund product " by " menu " option of automaton---on same production line, go out the product of the different trades mark with different technology, device parameter produced in series.
3, each functional section of rotary kiln is simplified, shape is simple (cylindrical), geometric parameter (diameter, length) and material can determine respectively according to the requirement of each section function, thereby when requiring to improve equipment capacity, increase specification of equipment, be easier to realize optimization in the design, make the production capacity increase bigger, but the cost amplification of equipment is less, and manufacturing, transportation, installation and maintenance are also fairly simple, easy.
4,, provide an otherwise effective technique approach for high-quality, carry out high-grade calcined kaolin production and enlarge its scale efficiently, reliably.
Description of drawings
The structural representation of Fig. 1 embodiment of the invention 1;
A-A cutaway view among Fig. 2 Fig. 1;
The structural representation of Fig. 3 helix transporting device
The structural representation of Fig. 4 embodiment of the invention 2;
The structural representation of Fig. 5 embodiment of the invention 3;
Cooling section I-I is to cutaway view among Fig. 6 Fig. 5.
The specific embodiment
Embodiment 1
Fig. 1 is the structural representation of one embodiment of the invention, this example be a kind of be used for the coal series kaolin rock be raw material produce high-grade papermaking paint level calcined kaolin products combined type respectively drive segment heat rotary kiln outward, form by 2 unit combination.Cylindrical shell 2 is different with material with 7 diameter.Every section cylindrical shell disposes drive unit 12,15 respectively, and rotates by speed separately by gear-wheel gear-ring 3,10 drive cylindrical shells 2,7.Supporting arrangement 13,14 is supporting cylindrical shell 2,7 by rolling ring 4,8; Two sections connection places are provided with coupling arrangement.Two heating furnaces 5,9 are resistance furnace, as shown in Figure 2.
As shown in Figure 3, helix transporting device is that the inwall of one section cylindrical shell 7 end therein is fixed with conveyor screw 17, and this conveyor screw 17 stretches in another section cylindrical shell 2, is with to be fixed on the hopper 18 that connects on the cover 6 outside conveyor screw 17.Between hopper 18 and the two sections cylindrical shells, and connect between cover 6 and the cylindrical shell 2,7 and be equipped with sealing device.General encapsulating method is to adopt packing seal.Hopper 18 is a receiving opening that makes progress at cylindrical shell 7 one ends, is beneficial to material and enters hopper 18.This receiving opening is an angle.
Two unit are controlled by a central control device.
Passed through the granular material of a series of processing, entered cylindrical shell 7 through kiln hood 11, behind dehydration here and a large amount of decarburization, the deshydroxy, entered next unit through connecting cover 6 by charging (feeding) equipment; In cylindrical shell 2, carry out fully calcined after, through 1 discharging of kiln hood cover.
Embodiment 2
As shown in Figure 4, be provided with inlet air house steward 19, and be provided with and connect cover 6 connections between branch branch wind pipe 16 and calcining section and preheating section in a calcining section exit.
Embodiment 3
As Fig. 5, shown in 6, cylindrical shell is divided into three sections, is called preheating section A, calcining section B and cooling section C.
The formation of cooling section is also the same substantially, but what dispose between the supporting arrangements at two covers is bosh 20.
Claims (11)
1, combined type respectively drive segment heat rotary kiln outward, comprise cylindrical shell, it is characterized in that cylindrical shell is divided into multistage, every section is disposed drive unit, heater and supporting arrangement; Two sections connection places are provided with coupling arrangement, and this coupling arrangement comprises device for transporting objects.
2, combined type according to claim 1 respectively drive segment heat rotary kiln outward, it is characterized in that device for transporting objects is a helix transporting device.
3, combined type according to claim 2 respectively drive segment heat rotary kiln outward, it is characterized in that said helix transporting device is that the wherein inwall of one section cylindrical shell end in two cylindrical shell connection places is fixed with conveyor screw, this conveyor screw stretches in another section cylindrical shell, is with fixing hopper outside conveyor screw.
4, combined type according to claim 3 respectively drive segment heat rotary kiln outward, it is characterized in that hopper has a receiving opening that makes progress at a fixing end of the cylindrical shell of conveyor screw.
5, combined type according to claim 1 respectively drive segment heat rotary kiln outward, it is characterized in that device for transporting objects is to be provided with scraper-trough conveyer two sections cylindrical shell connection places; Scraper-trough conveyer docks with two sections cylindrical shell sealings.
6, combined type according to claim 1 respectively drive segment heat rotary kiln outward, it is characterized in that between two sections, being provided with and maintain static moving connection cover; The cylindrical shell end with connect the cover connection place be provided with sealing device.
7, according to the described combined type of one of claim 1 to 6 respectively drive segment heat rotary kiln outward, it is characterized in that barrel designs is to have 2 sections of difference in functionality, be called preheating section and calcining section, join cooler in addition after the calcining section.
8, combined type according to claim 7 respectively drive segment heat rotary kiln outward, it is characterized in that a calcining section material outlet place is provided with the inlet air house steward, and be provided with branch branch wind pipe and calcining section and connect with coupling arrangement between preheating section.
9, according to the described combined type of one of claim 1 to 6 respectively drive segment heat rotary kiln outward, it is characterized in that barrel designs is to have 3 sections of difference in functionality, is called preheating section, calcining section and cooling section.
10, combined type according to claim 9 respectively drive segment heat rotary kiln outward, it is characterized in that a calcining section material outlet place is provided with the inlet air house steward, and be provided with branch branch wind pipe and calcining section and connect with coupling arrangement between preheating section.
11, according to the described combined type of one of claim 1 to 6 respectively drive segment heat rotary kiln outward, it is characterized in that being provided with the inlet air house steward, and be provided with branch branch wind pipe and calcining section and connect with coupling arrangement between preheating section at a calcining section material outlet place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100468910A CN100565065C (en) | 2004-11-03 | 2004-11-03 | Combined type drive segment respectively heats rotary kiln outward |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100468910A CN100565065C (en) | 2004-11-03 | 2004-11-03 | Combined type drive segment respectively heats rotary kiln outward |
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| Publication Number | Publication Date |
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| CN1769827A true CN1769827A (en) | 2006-05-10 |
| CN100565065C CN100565065C (en) | 2009-12-02 |
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| CNB2004100468910A Expired - Fee Related CN100565065C (en) | 2004-11-03 | 2004-11-03 | Combined type drive segment respectively heats rotary kiln outward |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278878A (en) * | 2011-07-09 | 2011-12-14 | 辽宁科技大学 | Method for roasting bauxite in variable cross section tunnel kiln |
| CN102564110A (en) * | 2010-12-07 | 2012-07-11 | 中铝国际技术发展有限公司 | Lime rotary kiln |
| CN102976337A (en) * | 2011-09-02 | 2013-03-20 | 新浦化学（泰兴）有限公司 | Method for preparing silicon tetrafluoride by rotary kiln |
| CN105066685A (en) * | 2015-09-02 | 2015-11-18 | 苏州博涛机电设备有限公司 | Rotary furnace for powder carbon removal |
| CN106813497A (en) * | 2015-11-27 | 2017-06-09 | 姜良政 | Rotary calcining equipment and calcine technology |
| CN108800921A (en) * | 2018-08-10 | 2018-11-13 | 贵州芭田生态工程有限公司 | A kind of rotary kiln for calcining phosphorus ore |
| CN109579512A (en) * | 2018-11-29 | 2019-04-05 | 湖南昌迅科技环保股份有限公司 | Multisection type rotary kiln |
| TWI682141B (en) * | 2019-04-09 | 2020-01-11 | 王順元 | Rotary kiln with double cylinder |
| CN112460944A (en) * | 2020-11-25 | 2021-03-09 | 商都中建金马冶金化工有限公司 | Horizontal rotary kiln |
| CN112880390A (en) * | 2021-01-28 | 2021-06-01 | 江苏鹏飞集团股份有限公司 | Integrated red mud roasting rotary kiln with preheating and calcining functions |
-
2004
- 2004-11-03 CN CNB2004100468910A patent/CN100565065C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564110A (en) * | 2010-12-07 | 2012-07-11 | 中铝国际技术发展有限公司 | Lime rotary kiln |
| CN102278878A (en) * | 2011-07-09 | 2011-12-14 | 辽宁科技大学 | Method for roasting bauxite in variable cross section tunnel kiln |
| CN102976337A (en) * | 2011-09-02 | 2013-03-20 | 新浦化学（泰兴）有限公司 | Method for preparing silicon tetrafluoride by rotary kiln |
| CN102976337B (en) * | 2011-09-02 | 2015-11-25 | 新浦化学（泰兴）有限公司 | Rotary kiln is adopted to prepare the method for silicon tetrafluoride |
| CN105066685A (en) * | 2015-09-02 | 2015-11-18 | 苏州博涛机电设备有限公司 | Rotary furnace for powder carbon removal |
| CN106813497A (en) * | 2015-11-27 | 2017-06-09 | 姜良政 | Rotary calcining equipment and calcine technology |
| CN108800921A (en) * | 2018-08-10 | 2018-11-13 | 贵州芭田生态工程有限公司 | A kind of rotary kiln for calcining phosphorus ore |
| CN109579512A (en) * | 2018-11-29 | 2019-04-05 | 湖南昌迅科技环保股份有限公司 | Multisection type rotary kiln |
| CN109579512B (en) * | 2018-11-29 | 2019-11-12 | 湖南昌迅科技环保股份有限公司 | Multisection type rotary kiln |
| TWI682141B (en) * | 2019-04-09 | 2020-01-11 | 王順元 | Rotary kiln with double cylinder |
| CN112460944A (en) * | 2020-11-25 | 2021-03-09 | 商都中建金马冶金化工有限公司 | Horizontal rotary kiln |
| CN112880390A (en) * | 2021-01-28 | 2021-06-01 | 江苏鹏飞集团股份有限公司 | Integrated red mud roasting rotary kiln with preheating and calcining functions |
| CN112880390B (en) * | 2021-01-28 | 2022-10-14 | 江苏鹏飞集团股份有限公司 | Integrated red mud roasting rotary kiln with preheating and calcining functions |
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| Publication number | Publication date |
|---|---|
| CN100565065C (en) | 2009-12-02 |
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Granted publication date: 20091202 Termination date: 20131103 |