CN101216241A - Three-return-stroke cylinder type drying machine - Google Patents
Three-return-stroke cylinder type drying machine Download PDFInfo
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- CN101216241A CN101216241A CNA2007101592177A CN200710159217A CN101216241A CN 101216241 A CN101216241 A CN 101216241A CN A2007101592177 A CNA2007101592177 A CN A2007101592177A CN 200710159217 A CN200710159217 A CN 200710159217A CN 101216241 A CN101216241 A CN 101216241A
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Abstract
An improved three-pass drum drier is composed of a main body consisting of supporting frame, sealing box and drum, driver, supporter and controller, and features that the drum axis of main body is parallel to horizontal plane, the drum is composed of concentric internal, middle and external drums, which are alternatively sleeved to form three drying and dewatering units, the adjacent wall plates of internal, middle and external drums are connected via regulating supporter and reinforcing buffer pad, the heat insulating cover is arranged at the periphery of wall plate of external drum, the spiral material distributing and throwing units are arranged at the inner surface of wall plates of internal, middle and external drums, and the gear rings at periphery of main body and the center of gravity of drum are assembled in centering mode. The drum-type dryer effectively overcomes the defects of easy deformation and dislocation, axial displacement and the like of the traditional drum-type dryer, and has the advantages of reasonable structural design, stable performance, smooth process flow, large primary dewatering amplitude, high thermal efficiency, energy conservation and consumption reduction, and wide application range.
Description
Technical field
The present invention relates to a kind of a large amount of material drying device, particularly a kind of precipitation range is big, energy-saving consumption-reducing, three return journey barrel type drying machines that the thermal efficiency is high.It can be widely used in hanging down of every profession and trade and glue dehydrating of material, also can be used as the mechanized equipment of coal gasification brown coal, municipal refuse, the contour water-containing materials oven dry of river course mud.
Background technology
At present, material drying device has been widely used in the low of industries such as chemical industry, mine, agricultural, industry, light industry, medicine and environmental protection and has glued dehydrating of material, and uses more individual layer cylindrical drier, then is the main product on the current drying machine market.But it is used for reference the fifties general dry technology mostly and grows up, and all there are defective to a certain extent in its device structure, equipment technology and transmission system etc.At first equip on the technology and have the following disadvantages: existing individual layer cylindrical drier adopts 300-600 ℃ high heated drying material more, and materials such as its cylindrical shell employing refractory brick are constructed heat-insulation layer, so equipment volume is big, coefficient of admission is less, and the material bearing capacity also seldom.Because the motion revolution is lower than 6r/min, be subjected to the limitation of material scattering mechanism structure, the material curtain is along the clothoid vertical drop of center line the place ahead in the machine, many, the blank coefficients in tomography space are excessive, thermal medium and the material touch opportunity is few, heat-transfer capability is poor, combustion gas temperature height (high-temp waste gas burns the sack cleaner phenomenon and happens occasionally), humidity are little, and heat loss is big, and the thermal efficiency is relatively low.Therefore, such drying device is demanded urgently improving.Along with the national economy develop rapidly, the raising of scientific and technological level, some professional very strong special case roller drying technology are also arisen at the historic moment, but equally all belong to individual layer cylindrical drier series by its design feature division, report according to patent documentation: notification number is " the horizontal rotary drum drying machine " of CN2290004Y, notification number be CN2238407Y's " dual-heating type rotary drum drying machine ", notification number is " the rotation drum type garbage disposal special-purpose indirect dryer " of CN2690826Y; Notification number be CN2606321Y's " flash-type rotary kiln " etc., be the special case technology of individual layer cylindrical drier category.
Secondly equipment configuration has the following disadvantages: (1) is because existing individual layer cylindrical drier operation revolution is low, the disconnected duty factor of material curtain is big, high temperature thermal medium is burned wall, so for reducing the body heat radiation and being convenient to the transmission system setting, generally all be to adopt three layers of wallboard, middle auxilliary method of establishing refractory brick is though solved the setting of heat radiation and transmission system, but increased equipment self-weight, increased power consumption; (2) conventional monolayers drum-type or the cylindrical shell that encircles cylindrical drier are and are in tilted layout mostly, and its axis and horizontal angle are no more than 8 °, generally adopt 1.5 °～3.0 °.Need gear wheel be set in the corresponding side of rolling ring for overcoming axial force, will carry out the design of best fit to the rolling ring and the support roller of the gear of drive unit and gear ring, bracing or strutting arrangement simultaneously, however, still influence the serviceability and the service life of these parts.(3) between the cylinder of existing many ring cylindrical driers, a two ends of being everlasting adopt a plurality of support bars to be connected and fixed.Because it is bigger that wet stock and thermal medium carry out the thermal stress that causes because of thermal deformation between each cylinder in the process of heat exchange, adding its cylindrical shell adopts one-sided driving to rotate, increased the distorting stress that the morpheme distortion under torsional interaction produces, these stress will cause weld cracking or barrel distortion as not solving well, will make device damage when serious.The home and abroad has occurred adopting an end to fix in succession for this reason, and the structural design that the other end is slidingly connected attempts to change above-mentioned supporting form.As notification number is CN1808029A " draw bail of multi-ring drum drying machine ", one end radial support adopts fixing welding, the other end is a slide block structure, the middle part is unsettled, do not have and support, it is feasible being used to dry light body material as small drying apparatus, but for large-scale drying equipment, need the ratio of oven dry material great, drum length reaches more than the 20m, carrying material amount reaches 100T when above, this only end has that to support the middle part unsettled and be the structure that slide block connects, the multi-ring drum drying machine that its circumferential and axial all do not have the location is actually the unrooted support, increased the destabilizing factor of equipment operation, be prone to urceolus and move asynchronous with middle tube or inner core or scurry problem such as position vertically.Therefore existing individual layer drum-type or to encircle the draw bail of cylindrical drier in urgent need to be improved and improve more.
The deficiency that exists of transmission system once more: domestic roller drier transmission power is calculated and mostly is to adopt empirical equation to design and calculate, and its formula has mainly comprised the move power (overcoming eccentric moment) of needs of powder body in (1) cylinder; (2) cylinder rotates the power that needs; (3) cylinder support section friction power drain has only calculated its efficient, therefore in the configuration of reductor, it is all bigger than normal, higher that existing individual layer roller drier is equipped with power, and for example existing specification is the revolving drum drying machine of φ 3.6m * 24m, estimate heavy 189T, be equipped with power of motor (160 * 2) KW; Specification is the revolving drum drying machine of φ 4.2m * 12m, estimates heavy 140T, is equipped with power of motor 132KW etc., and it is equipped with, and power is higher, and retarding device is bigger, these all in urgent need to be improved and improvement.
Summary of the invention
The purpose of this invention is to provide a kind of improved three return journey barrel type drying machines, it is yielding unsceptered and axially scurry defective such as position that it has solved effectively that conventional rollers formula drying machine draw bail exists, its reasonable in design, and stable performance, technological process are smooth and easy, compare with same category of device, one time precipitation range is big, and thermal efficiency height, energy-saving consumption-reducing, its volume are filled rate and improved nearly 2-3 doubly, output improves more than 3 times, save one-time investment, reduced operating cost, applied widely.
The object of the present invention is achieved like this: this machine comprises by support, seal box and periphery are provided with rolling ring, body and drive unit thereof that the cylindrical shell of gear ring is formed, supporting arrangement and controller, its technical essential is: the tubular axis of described body is parallel with horizontal plane, cylindrical shell is by the inner barrel of arranged concentric, middle cylindrical shell and outer cylinder body mutual dislocation are sleeved on together, formed cavity volume constitutes three drying dewatering unit respectively, described inner barrel, be connected the location by adjusting support and reinforcement buffer plate thereof between the adjacent wallboard of middle cylindrical shell and outer cylinder body by arranged radially, the periphery of outer cylinder body wallboard is provided with thermal isolating panel, at inner barrel, the inner peripheral surface of middle cylindrical shell and outer cylinder body wallboard is provided with pusher in the shape of a spiral homocline of arranging respectively and sheds device, and it is opposite to make the homocline that is arranged in adjacent wallboard inner peripheral surface shed the rotation direction of helix of device, the center of gravity centering assembling of the gear ring of described body periphery and cylindrical shell.
Described adjusting is supported by adjusting screw rod and a pair of nut and is constituted, adjust the screw rod middle part flat side is set, it is opposite with the threaded line rotation direction that nut connects to adjust the screw rod two ends, and is connected to an end of nut, and the other end of nut is fixed on the described reinforcement buffer plate.
The seal box of described body utilizes described support to be fixed on the two ends of described cylindrical shell, adopts labyrinth seal between the periphery of the outer cylinder body wallboard of cylindrical shell insertion seal box end and the seal box inner chamber.
The high-temperature medium chamber and the cryogenic media chamber that are communicated with the cavity of each drying dewatering unit in the cylindrical shell respectively are set in the seal box of the discharge end of described body.
In the seal box of the feed end of described body feed arrangement is set, the discharging opening of feed arrangement passes the connection outer cylinder body of cylindrical shell end and the end envelope of inner barrel end, and stretches in the inner core body cavity.
Because the present invention is improved on the architecture basics of traditional cylindrical drier, its reasonable in design, the tubular axis of body is parallel with horizontal plane, is the axial force that is in tilted layout and produces so overcome cylindrical shell.Inner barrel because of this cylindrical shell, middle cylindrical shell and outer cylinder body mutual dislocation are sleeved on together, constitute three drying dewatering unit respectively, and interior, in with the adjacent wallboard of outer cylinder body between be connected the location by adjusting support and reinforcement buffer plate thereof by arranged radially, regulate the flat side of the screw rod middle part of supporting, regulate use for spanner, be used to adjust the out-of-roundness and the curvature variation of cylindrical shell, overcome the stress deformation that produces in the body load movement process, the tube two ends that solved conventional rollers formula drying machine effectively adopt a plurality of support bars to be connected and fixed or only the end have and support the unsettled slide block draw bail in middle part, existing yielding unsceptered and axially scurry defective such as position.This installs outside that the periphery of cylindrical shell wallboard is provided with thermal isolating panel, and auxilliaryly establishes refractory brick, can reduce taking up room, and has correspondingly enlarged the dischargeable capacity of cavity, has increased the dry product quantum of output.It is pusher in the shape of a spiral the arrangement that device is shed in the homocline that is provided with respectively at the inner peripheral surface of inner barrel, middle cylindrical shell and outer cylinder body wallboard, and it is opposite to make the homocline that is arranged in adjacent wallboard inner peripheral surface shed the rotation direction of helix of device, material is constantly held up, promotes, sheds out, the whole volume space of disperse in a plurality of cavitys forms the material curtain, the integrity degree of this material curtain and the uniformity thereof have determined the transmission of thermal medium and exchange, have also concerned the thermal efficiency, precipitation ability and quantum of output.Thermal medium carries out the transmission and the exchange of stronger heat and matter with material in the process that penetrates the material curtain, the surface free water constantly is evaporated vaporization, contained constitution water and also continuous excessive evaporation of water of constitution and vaporization in the large granular materials body, temperature is near dew point, and the waste gas of the nearly saturation state of humidity is then got rid of by outlet.What the homocline that screw-pushing type is arranged shed that device realized new material replenishes constantly, is dried by the fire that material do not stop moves forward transposition, baking back material enters the next stage procedure links through discharging opening, has finished the overall process of drying in high quality.Therefore, can make material very successfully along the rotation direction of helix, enter another drying dewatering unit from a drying dewatering unit, infinitely prolong the movement locus of material, made technological process more smooth and easy, strengthened precipitation range one time, output height, quality are good, the EGT of discharging is near dew point, the nearly saturation state of humidity, thereby improves the thermal efficiency, reached the purpose of energy-saving consumption-reducing.In addition, the assembling of the center of gravity centering of the gear ring of body periphery and cylindrical shell, power distribution improves, and makes its driveability more stable, and power consumption only is 45% of a prior art, and is energy-conservation nearly more than 55%.In sum, this device not only helps the removal of total moistures such as the constitution water of high-moisture large granular materials and water of constitution, significantly saved user's civilwork engineering quantity, and showing that through practice examining it is compared with same category of device, its volume is filled rate and is improved nearly 2-3 doubly, output improves more than 3 times, save one-time investment, reduced operating cost, also widened the scope of application.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a kind of concrete structure schematic diagram of the present invention.
Fig. 2 is the cutaway view of Fig. 1 along the A-A line.
Fig. 3 is the cutaway view of Fig. 1 along the B-B line.
Fig. 4 is a kind of concrete structure schematic diagram that the adjusting among Fig. 3 is supported.
Sequence number explanation among the figure: 1 seal box, 2 feed arrangements, 3 ends envelope, 4 sealing devices, 5 outer cylinder bodies, cylindrical shell in the middle of 6,7 inner barrels, 8 the 3rd drying dewatering unit, 9 second drying dewatering unit, 10 first drying dewatering unit, 11 thermal isolating panels, 12 seal boxs, 13 devices for discharging, high-temperature medium chambers 14, cryogenic media chambers 15,16 discharge gates, device is shed in 17 homoclines, 18 motors, 19 reductors, 20 gears, 21 gear rings, 22 support rollers, 23 rolling rings, 24 regulate support, 25 reinforcement buffer plates, 26 supports, 27 waste gas outlets, 28 adjust screw rod, 29 adjust nut.
The specific embodiment
Describe concrete structure of the present invention in detail according to Fig. 1-4.Because of this machine is improved on the architecture basics of traditional cylindrical drier, so specification, model and the manufacturing process of its basic building block should determine that particularly structural design and use more should meet the requirement of safety production measures and the regulation of relevant criterion by existing standard and relevant regulations.This cylinder drying machine comprises by support 26, seal box 1,12 and periphery body and the parts such as drive unit, supporting arrangement and controller (not shown) thereof that the cylindrical shell of rolling ring 23, gear ring 21 is formed is set.Wherein drive unit comprises that the motor 18 commonly used, the reductor 19 that are assembled on the support 26 reach driven wheel 20 that connects by shaft coupling and the parts such as gear ring 21 that are engaged with.For the power distribution that makes drive unit is further improved, make its driveability more stable, reduce power consumption, the gear ring 21 that is assembled in the cylindrical shell periphery of body should be assembled with the center of gravity centering of cylindrical shell.According to designing requirement or actual needs, the motion revolution of body is controlled in the 3-30r/min scope, this can be by frequency change or other non-frequency drive pattern of variable-frequency governor, control the charging and discharging amount, control drying time, control precipitation range, power configuration can select unit to drive or two-shipper drives.The quantity of bracing or strutting arrangement can be provided with two or more sets according to the length and the needs of cylindrical shell, and every group of bracing or strutting arrangement comprises rolling ring commonly used 23 and a pair of support support roller 22 by bracket supports thereof.The tubular axis of the body after the installation is parallel with horizontal plane, and the cylindrical shell that does not adopt the conventional monolayers drum-type or encircle cylindrical drier more is the form that is in tilted layout.Cylindrical shell is sleeved on together (as shown in Figure 1) by inner barrel 7, middle cylindrical shell 6 and outer cylinder body 5 mutual dislocation of arranged concentric.The cavity volume that inner barrel 7 forms constitutes the first drying dewatering unit 10, the cavity volume that inner barrel 7 outer surfaces and middle cylindrical shell 6 inner surfaces form constitutes the second drying dewatering unit 9, and the cavity volume that middle cylindrical shell 6 outer surfaces and outer cylinder body 5 inner surfaces form constitutes the 3rd drying dewatering unit 8.Between the adjacent wallboard of the inner barrel 7 of cylindrical shell, middle cylindrical shell 6 and outer cylinder body 5, connect the location by adjusting support 24 and reinforcement buffer plate 25 thereof by arranged radially.Regulate support 24 and constitute (as shown in Figure 4) by adjusting screw rod 28 and a pair of nut 29.Adjust screw rod 28 middle parts flat side is set, regulate for spanner and use.It is opposite with the threaded line rotation direction that nut 29 connects to adjust screw rod 28 two ends, and is connected to an end of nut 29, and the other end of nut 29 is fixed on the reinforcement buffer plate 25.Utilize spanner to rotate and adjust screw rod 28, drive nut 29 and axially move simultaneously, change so that when manufacturing or Installation and Debugging, adjust the out-of-roundness and the curvature of cylindrical shell at any time along it.Can also overcome the stress deformation that produces in the body load movement process by reinforcement buffer plate 25.Periphery at outer cylinder body 5 wallboards is provided with thermal isolating panel 11, and the cover body of this stay-warm case 11 and specification, the kind of filling the insulation material in it should require according to the temperature control of cylindrical shell to set.Inner peripheral surface at inner barrel 7, middle cylindrical shell 6 and outer cylinder body 5 wallboards, according to the kind of the material that is dried and dry product character requirement pusher in the shape of a spiral homocline of arranging is set respectively and sheds device (claiming flight again) 17, and make the homocline that is arranged in adjacent wallboard inner peripheral surface shed the rotation direction opposite (the part homocline only is shown sheds device 17) of the helix of device 17 in Fig. 1, be beneficial to flowing of material.For guaranteeing that in the cylindrical shell running airborne dust does not prevent that again gas turnover body is provided with sealing device, its feed end seal box 1 and discharge end seal box 12 adopt conventional structures, and its specification, shape are determined by designing requirement.Feed end seal box 1 and discharge end seal box 12 utilize support 26 to be fixed on the two ends of cylindrical shell respectively, and cylindrical shell inserts between the periphery and each seal box inner chamber of outer cylinder body 5 wallboards of each seal box 1,12 end, can adopt the sealing device 4 of labyrinth seal or other form.The high-temperature medium chamber 14 and the cryogenic media chamber 15 that are communicated with the cavity of the first drying dewatering unit 10 and the 3rd drying dewatering unit 8 in the cylindrical shell are set respectively, so that the medium of relevant temperature is provided as required in the seal box 12 of the discharge end of body.In the seal box 12 of the discharge end of body, also be provided with the device for discharging 13 of discharge gate 16.Be the needs of heat-insulation and heat-preservation and safety in production, can thermal isolating panel be set in the periphery of high-temperature medium chamber 14.In the feed end seal box 1 of body feed arrangement 2 is set, the discharging opening of feed arrangement 2 passes the connection outer cylinder body 5 of cylindrical shell end and the end envelope 3 of inner barrel 7 ends, and stretches in the chamber of inner barrel 7.
Controller in the present embodiment adopts general circuit commonly used control design, also can be disclosed " utilization CAD/CAM interactive adaptive control software is formed digital control system to the automated programming that Programmable Logic Controller carries out the Mathematical Modeling exchange " in " the flyash brick former numerical control method " of CN 1322966C with reference to the notification number of inventor's design.Controller according to elements such as the impedance signal that is arranged on the output of sensing detection element in the cylindrical shell and motor, digital instrument, PLC Programmable Logic Controller carry out signal collection, read, discern, compare, handle, amplify, feed back and rectify a deviation, adjust the unit equipment run action, and open and close the interlock control of ring, comprise the increase of the large and small control of high and low control, precipitation range of working media temperature and treating capacity or reduce control etc.; Its drive motors adopts Frequency Converter Control, allows to adopt soft start control and electric switch control simultaneously.Wherein the detector unit temperature control system is an independent control unit, is made up of digital regulated device and sensor.Sensor adopts intelligent thermocouple, and sleeve pipe is stainless steel, anticorrosion antiwear structure, is placed in hot-blast stove exit, drying machine hot-wind inlet place, drying machine waste gas outlet place respectively, is connected to the input of digital regulated device with three twisted wires.
The operating procedure of this machine is identical with the regulation of existing cylinder drying machine with using method.Its drying mode can adopt counter-current drying technology, concurrent drying technology or following current, the adverse current of the existing cylinder drying machine drying process with usefulness, little negative pressure operation; Temperature controlling range will be selected suitable temperature according to material attribute, catch fire critical point and its precipitation rule characteristic, can also adopt alternating temperature to handle as required.
Claims (5)
1. three return journey barrel type drying machines, comprise by support, seal box and periphery are provided with rolling ring, body and drive unit thereof that the cylindrical shell of gear ring is formed, supporting arrangement and controller, it is characterized in that: the tubular axis of described body is parallel with horizontal plane, cylindrical shell is by the inner barrel of arranged concentric, middle cylindrical shell and outer cylinder body mutual dislocation are sleeved on together, formed cavity volume constitutes three drying dewatering unit respectively, described inner barrel, be connected the location by adjusting support and reinforcement buffer plate thereof between the adjacent wallboard of middle cylindrical shell and outer cylinder body by arranged radially, the periphery of outer cylinder body wallboard is provided with thermal isolating panel, at inner barrel, the inner peripheral surface of middle cylindrical shell and outer cylinder body wallboard is provided with pusher in the shape of a spiral homocline of arranging respectively and sheds device, and it is opposite to make the homocline that is arranged in adjacent wallboard inner peripheral surface shed the rotation direction of helix of device, the center of gravity centering assembling of the gear ring of described body periphery and cylindrical shell.
2. three return journey barrel type drying machines according to claim 1, it is characterized in that: described adjusting is supported by adjusting screw rod and a pair of nut and is constituted, adjust the screw rod middle part flat side is set, it is opposite with the threaded line rotation direction that nut connects to adjust the screw rod two ends, and being connected to an end of nut, the other end of nut is fixed on the described reinforcement buffer plate.
3. three return journey barrel type drying machines according to claim 1, it is characterized in that: the seal box of described body utilizes described support to be fixed on the two ends of described cylindrical shell, adopts labyrinth seal between the periphery of the outer cylinder body wallboard of cylindrical shell insertion seal box end and the seal box inner chamber.
4. three return journey barrel type drying machines according to claim 1 is characterized in that: the high-temperature medium chamber and the cryogenic media chamber that are communicated with the cavity of the first drying dewatering unit and the 3rd drying dewatering unit in the cylindrical shell are set in the seal box of the discharge end of described body respectively.
5. three return journey barrel type drying machines according to claim 1, it is characterized in that: in the seal box of the feed end of described body feed arrangement is set, the discharging opening of feed arrangement passes the connection outer cylinder body of cylindrical shell end and the end envelope of inner barrel end, and stretches in the inner core body cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101592177A CN100570253C (en) | 2007-12-27 | 2007-12-27 | Three-return-stroke cylinder type drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101592177A CN100570253C (en) | 2007-12-27 | 2007-12-27 | Three-return-stroke cylinder type drying machine |
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| CN101216241A true CN101216241A (en) | 2008-07-09 |
| CN100570253C CN100570253C (en) | 2009-12-16 |
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| CNB2007101592177A Expired - Fee Related CN100570253C (en) | 2007-12-27 | 2007-12-27 | Three-return-stroke cylinder type drying machine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101846442B (en) * | 2009-08-20 | 2011-10-26 | 柏静柱 | Temperature-controllable multi-drum drier |
| CN104406399A (en) * | 2014-10-30 | 2015-03-11 | 中国农业大学 | Rotating drum for three-pass rotating drum drier applicable to particle material drying |
| CN104949481A (en) * | 2015-06-12 | 2015-09-30 | 汉中伯特机械设备制造有限公司 | Horizontal continuous dryer |
| CN109737420A (en) * | 2018-12-27 | 2019-05-10 | 怀集汇清环保设备工程有限公司 | A kind of house refuse back-fire type pyrolysis disposing technique and device |
| CN110567261A (en) * | 2019-09-25 | 2019-12-13 | 河南心连心化学工业集团股份有限公司 | gasification ash drying device and method for four-nozzle water-gas entrained flow bed |
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| CN113405351A (en) * | 2021-07-26 | 2021-09-17 | 江苏紫科机械有限公司 | Semi coke drying and cooling device |
| CN114234583A (en) * | 2022-02-28 | 2022-03-25 | 山东宝阳干燥设备科技有限公司 | High-efficient drying-machine of graphite |
| CN115574586A (en) * | 2022-10-17 | 2023-01-06 | 河南省中农嘉吉化工有限公司 | Dryer for microbial organic fertilizer and using method thereof |
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| CN101915497B (en) * | 2010-08-13 | 2012-07-04 | 李相荣 | Lignite-drying and quality-improving process for preparing superheated steam from waste heat steam |
| CN101907386A (en) * | 2010-08-13 | 2010-12-08 | 辽宁中田干燥设备制造有限公司 | Energy efficient cylinder type brown coal drying and upgrading device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AT317088B (en) * | 1971-02-13 | 1974-08-12 | Buettner Schilde Haas Ag | Three-pass drying drum |
| FR2658904B1 (en) * | 1990-02-23 | 1992-07-10 | Bertin & Cie | DRYER FOR DIVIDED PRODUCTS. |
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| CN1808029A (en) * | 2006-02-10 | 2006-07-26 | 卢英林 | Connecting structure of multi-ring drum drying machine |
| CN201149411Y (en) * | 2007-12-27 | 2008-11-12 | 辽宁中田干燥设备制造有限公司 | Three-return-stroke cylinder type drying machine |
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| CN114234583B (en) * | 2022-02-28 | 2022-05-31 | 山东宝阳干燥设备科技有限公司 | High-efficient drying-machine of graphite |
| CN115574586A (en) * | 2022-10-17 | 2023-01-06 | 河南省中农嘉吉化工有限公司 | Dryer for microbial organic fertilizer and using method thereof |
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