CN102798287A - Roasting rotary furnace - Google Patents
Roasting rotary furnace Download PDFInfo
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- CN102798287A CN102798287A CN2012102860573A CN201210286057A CN102798287A CN 102798287 A CN102798287 A CN 102798287A CN 2012102860573 A CN2012102860573 A CN 2012102860573A CN 201210286057 A CN201210286057 A CN 201210286057A CN 102798287 A CN102798287 A CN 102798287A
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Abstract
The invention relates to a roasting rotary furnace belonging to the technical field of non-ferrous metal metallurgy, in particular to a structural improvement on the roasting rotary furnace. The invention provides a small roasting rotary furnace. The roasting rotary furnace has the characteristics of spiral back-and-forth rapid uniform feeding, hydraulic tipping discharge mode, controllable reduction time, high thermal efficiency, wide scope of application and low cost. The roasting rotary furnace comprises a furnace body, wherein a supporting and positioning mechanism and a transmission mechanism are arranged on a base of the furnace body; and the roasting rotary furnace has the key structural points that a hydraulic tipping mechanism is arranged below the base, the discharge end of the furnace body is provided with a solid discharge port and a melt discharge port, the feed end of the furnace body is provided with a furnace head cover body with a burner, and a feed mechanism is arranged on the side part of the furnace head cover body.
Description
Technical field
the invention belongs to non-ferrous metal metallurgy process equipment technical field, more particularly, relate to a kind of improvement of calcination rotary kiln structure.
Background technology
calcining kilns (being calcination rotary kiln) are the Thermal Equipments of loose shape or pasty material being carried out heat treated, and calcining kiln occupies an important position in non-ferrous metal production; This equipment is used for to ore, and concentrate and intermediate product carry out sintering, heat treated such as roasting.
existing calcining kiln is the horizontal cylindrical device of hollow; Kiln body shell is rolled into by steel plate, slightly tilts and horizontal plane (gradient is that every meter length is 20～60 millimeters), rotates around the longitudinal axis; Furnace charge is borrowed the effect of the gradient vertically, and the revolution of kiln and the thrust of material travel forward.The length of calcining kiln can be tens of rice to 100 tens of rice, diameter from 3 meters to more than 6 meters or 6 meters, selected arbitrarily with technological requirement.Cylindrical shell is rolled into by steel plate, is the container that material is accomplished physicochemical change, thereby is the matrix of calcining kiln.In order to adapt to high temperature, play the protection cylindrical shell and reduce heat radiation so all build refractory material (being liner) in the cylindrical shell by laying bricks or stones.According to the change procedure of material, be divided into each work zone in the cylindrical shell, like drying belt, give the torrid zone, divide ungird, clinkering zone (or reaction zone) etc.Also comprise bracing or strutting arrangement, transmission device, burner and charging (feeding) equipment, bracing or strutting arrangement bears the total weight of rotating part, and its tricks is called the shelves number of kiln, generally has 4～8 grades, and material is gone into the kiln form and adopted the chute feed-type usually.Existing calcining kiln mainly is to be used to handle the furnace charge that is easy to flow.
Owing to the high speed development of World Economics and the great demand of stainless steel industry, the whole world constantly increases the demand of metallic nickel
.But along with economic utilization, the higher nickel sulfide ore resource exhaustion day by day of grade, global nickel industry turns to reserves to enrich but the lower lateritic nickel ore (nickel ore) of grade at the emphasis of development of resources.This certainly will have higher requirement to smelting process method, the process equipment of the low lateritic nickel ore of grade.
Ferronickel technology (being usually used in the reduction roasting of the higher nickel sulfide ore of grade) is produced in
reduction melting: the existing calcination rotary kiln equipment in rotary kiln electric furnace process, rotary kiln blast furnace process, the rotary kiln Blast Furnace Method has the big characteristics of treating capacity.Though the structure to existing calcining kiln has been carried out continuous improvement, and its structure is become increasingly complex, diameter is big, the kiln body is long, profile is huge; In the use of reality, the thermal efficiency is very low, occupation of land is huge, and operation, difficult in maintenance, has increased labour intensity greatly, and the recovery time is difficult to grasp.And the cost of existing calcining kiln improves constantly, and a lot of medium-sized and small enterprises can't be born at all.
ferronickel production also has rotary kiln production nodulizing process, this technology be with low-grade lateritic nickel ore after dry, broken, screening are handled, mixes with flux, reducing agent in proportion, the adding rotary kiln fuses.Ore is reduced in calcination rotary kiln, generates spongiform dilval.The mixture of alloy and slag obtains thick ferronickel granule through processing such as shrend, cooling, fragmentation, screening, magnetic separation or gravity treatments.Adopt this method processing low grade nickel ore in existing calcining kiln also to have shortcomings such as production efficiency is low, the rate of recovery of nickel is low, do not obtain in the past promoting.
Summary of the invention
the present invention is exactly to the problems referred to above; Remedy the deficiency of prior art; A kind of small-sized calcining kiln is provided, and this roasting rotary furnace has spiral and comes and goes the characteristics that marker method, recovery time are controlled, the thermal efficiency is high, the scope of application is wide, cost is low that rapid and uniform feed, hydraulic pressure are tumbled.
for realizing above-mentioned purpose of the present invention, the present invention adopts following technical scheme.
the present invention includes the kiln body; The base of kiln body is provided with supporting and positioning mechanism and transmission mechanism; Its structural feature: the below of base is provided with hydraulic tipping gear; Kiln body discharge end is provided with solid discharging opening and melt discharging opening, and kiln body feeding end side is provided with the kiln hood cover body with burner, and the side of kiln hood cover body is a feeder.
particularly, said solid discharging opening be one with the melt discharging opening be two; Two melt discharging openings and fixedly discharging opening coexist on the circumference, this circumference is the bottom surface circumference of the cylindric inner chamber of kiln body, the angle that two melt discharging opening and circle center line connectings are is 120 °.
said kiln body inner lining refractory block layer, the top and bottom of kiln body discharge end intracavity sidewall are respectively arranged with solid discharging opening and melt discharging opening, and the sidewall middle part of kiln body discharge end inner chamber is provided with observation panel; The kiln external adopts the end enclosure structure of orthodrome transition; Gear ring on the external wall of kiln is meshed with the gear of transmission mechanism, and gear links to each other with variable-frequency motor through reductor; On the external wall of kiln, the both sides of gear ring also are provided with the wheel band; Said supporting and positioning mechanism comprise lift roller with have along carrying roller, the wheel band of kiln body feeding end is arranged on and lifts on the roller, the wheel band of kiln body discharge end has been arranged on along on the carrying roller; The bottom of kiln body discharge end base has the bearing of being fixedly hinged, and the opposite side of base is continuous with the push rod of below hydraulic tipping gear through being movably hinged bearing.
further, the connected mode of said gear ring and kiln body adopts the outer wall welding of some tangent spring-plates and kiln body.
further, said hydraulic tipping gear comprises two bearings that are fixedly hinged, two are movably hinged bearing, and two hydraulic cylinders; Two bearings that are fixedly hinged are arranged on the bottom of kiln axon to both sides, kiln body discharge end base symmetrically, the bottom welding of be fixedly hinged bearing one end and base, and the other end closing, adopts bearing pin to connect through pre-buried foundation bolt in the basis between the pivoting support; Two are movably hinged bearing and are arranged on the below of kiln axon to both sides, base middle part symmetrically; Be movably hinged the bottom welding of bearing one end and base; The other end links to each other with the push rod of hydraulic cylinder through bearing pin, and close through pre-buried foundation bolt handle in basic melt pit the bottom of hydraulic cylinder.
said kiln hood cover body comprises the cover body of the inner lining refractory block layer on first support and the first support top; Cover body is provided with the exhaust opening corresponding with kiln body discharge end kiln body inlet and the flame import of burner, and the flue of exhaust opening in cover body links to each other with the flue gas recovery and processing system.
are provided with the gap between said kiln body and the cover body further, and the gap is 40～50mm.
said feeder comprises helixes feed equipment, running gear and second support, and track one end of running gear is arranged on second support, and the other end of running gear track has lead limit switch, and is arranged on first support; The feed support both sides that are fixed on the helixes feed equipment below are respectively arranged with one group of driving wheel and the one group of driven pulley with movable motor that is positioned on the track; Helixes feed equipment comprises the screw feeder tube, the distolateral feed motor that links to each other with the screw feeder tube that is provided with of the inlet of screw feeder tube, and the arrival end top is a feed hopper, the below of the port of export is a feed opening.
are as another kind of preferred version of the present invention; Screw feeder tube one end of helixes feed equipment is provided with the feed motor; One end that can stretch into the kiln body is provided with the temperature resistant encapsulation cover; The motor-driven screw feeder bar of the built-in feed of screw feeder tube, the other end of screw feeder bar are arranged on the heat-resisting bearing in the temperature resistant encapsulation cover; Screw feeder tube and screw feeder bar between driven pulley and the temperature resistant encapsulation cover all adopt heat resisting steel.So that helixes feed equipment can bear the hot environment in the kiln body.
are as a kind of improvement of the present invention; Be provided with some backing plates between wheel band and the external wall of kiln; The left end of backing plate is positioned at outside the wheel band, with the external wall welding of kiln, and is welded with on it with wheel and is with corresponding second pin block of a side; The right-hand member of backing plate also is positioned at outside the wheel band, and on the same excircle of these end both sides, kiln body, is welded with first pin block respectively; Second pin block of adjacent backing plate is welded on the right-hand member of this backing plate, the right-hand member of backing plate and the welding of kiln body, and two first pin blocks of adjacent backing plate are welded on the both sides up and down of this backing plate respectively.
The kiln body length of
roasting rotary furnace of the present invention is 1.5～15m, φ 3～6m.
Power supply, air feed, air feed, spiral walking, screw feeder, the hydraulic pressure that
electric control system of roasting rotary furnace of the present invention satisfies the roasting rotary furnace tumble discharge, temperature element etc. each parts synchronously, the control of sequential working requires to get final product.
beneficial effect compared with prior art of the present invention.
roasting rotary furnace of the present invention not only is used for the roasting reduction of low ore grade nickel iron charge, high-grade nickel sulfide ore, also can be used for handling scrap battery, zinc oxide ore etc.; Both can handle solid, also can handle melt non-ferrous metal material; Has following advantage.
(1) spiral comes and goes the rapid and uniform feed: through control helixes feed equipment and running gear in roasting rotary furnace kiln body of the present invention, carry fast, material (mineral aggregate or coal) evenly distributes; When stopping feed; Screw(-type) feeder retreats to roasting rotary furnace feeder side, thereby avoids high temperature (1250～1350 ℃) scaling loss helixes feed equipment in the roasting rotary furnace.In addition, rationally dose counterweight, guarantee the running gear even running; Take into full account the wiring problem of movable motor, simple and easy wire structures is set.This is simple in structure, and is small and exquisite, is convenient to processing and fabricating; Chute feed-type more in the past is easy to use, and result of use is good.
(2) hydraulic pressure marker method of tumbling: roasting rotary furnace equipment level of the present invention arranges, discharges smoothly for making in the kiln material, adopts the hydraulic pressure discharge of tumbling.According to the short and small characteristics of this roasting rotary furnace kiln body,, after material discharged, steadily reset kiln body, transmission mechanism, supporting and positioning mechanism, base certain angle of together tumbling.Hydraulic tipping gear has adopted the motion of two hydraulic cylinder synchronous, has guaranteed the steady start-stop of roasting rotary furnace and resets.And existing calcining kiln kiln body length, complex structure, be used for single process, single product, be not suitable for the hydraulic pressure discharge of tumbling; The hydraulic tipping gear of roasting rotary furnace of the present invention can improve the automatization level of equipment greatly through electrical control, so efficient is high.
(3) recovery time is controlled: because the kiln body of roasting rotary furnace of the present invention is comparatively short and small, and good leak tightness; Therefore, material can be according to different tests, different processes requirement in the recovery time of kiln intracoelomic cavity, and appropriate regulation realizes the variation of recovery time through the electric program of artificial adjusting, and its recovery time of the material that promptly in the roasting rotary furnace, reduces is controlled.And existing calcining kiln kiln body is long, roughly is divided into drying belt, gives the torrid zone, branch ungirds, clinkering zone (or reaction zone); When material reacted at zone of reduction, because the kiln volume is bigger, bigger as the content of the CO gas of reducing agent, the recovery time also changed thereupon, is difficult to grasp.
(4) thermal efficiency is high: roasting rotary furnace equipment only has the gap of trace between kiln hood cover body and kiln body, compare with existing rotary kiln device in this gap, very little; Therefore, the heat of being supplied with by burner almost all is used for the reduction roasting of material, and thermal loss is few, and the thermal efficiency is high.
(5) scope of application is wide, cost is low: roasting rotary furnace of the present invention not only is used for the roasting reduction of low ore grade nickel iron charge, high-grade nickel sulfide ore; Also can be used for handling scrap battery, lead-zinc etc.; Both can handle solid; Also can handle melt non-ferrous metal material, improve the comprehensive utilization ratio of industrial equipment greatly; And the entire equipment floor space is little, volume is little, and structure is comparatively simple, so cost is low, and is particularly suitable for middle-size and small-size non-ferrous metal processing enterprise.
Description of drawings
are described further roasting rotary furnace of the present invention below in conjunction with the accompanying drawing and the specific embodiment.
Fig. 1 is a structural representation of the present invention.
wherein, 1 be hydraulic tipping gear, 2 for base, 3 for transmission mechanism, 4 for supporting and positioning mechanism, 501 for the solid discharging opening, 502 for kiln body discharge end, 503 for the melt discharging opening, 5 for the kiln body, 504 for kiln body feeding end, 6 for the kiln hood cover body, 602 for burner, 7 for feeder.
Fig. 2 is the left view of Fig. 1.
wherein, 601 be first support, 603 for temperature measuring equipment, 604 for the flame import, 505 for latch plate, 605 for feeding-passage, 606 for cover body, 607 for exhaust opening, 608 for flue.
Fig. 3 is the cutaway view of bowing of Fig. 1.
wherein, 506 for observation panel, 507 for kiln body inlet, 8 for the gap, 710 for feed hopper, 712 for feed motor, 715 be that track, 714 is second support.
Fig. 4 is the structural representation of feeder of the present invention.
wherein, 701 be feed opening, 702 for heat-resisting bearing, 703 for the temperature resistant encapsulation cover, 704 for lead limit switch, 705 for the screw feeder bar, 706 for helixes feed equipment, 707 for running gear, 708 for driven pulley, 709 for the feed support, 711 for driving wheel, 713 for movable motor.
Fig. 5 is the A-A cutaway view of Fig. 4.
wherein, 716 is that screw feeder tube, 717 is for counterweight.
Fig. 6 is the structural representation of hydraulic tipping gear of the present invention.
wherein, 301 for the spring column pin gear coupling, 302 for gear support, 303 for gear, 304 for variable-frequency motor, 305 for reducing motor, 401 for lift roller, 402 for have along carrying roller, 403 for along, 404 be with for taking turns, 610 be exhanst gas outlet for gear ring, 511 for round steel spare, 510 for mud bubble, 509 for fire brick layer, 508 for screw-down type grease cup, 10 for carrying roller bearing, 9.
Fig. 7 is the working state figure of roasting rotary furnace of the present invention when tumbling discharge.
wherein, 101 for foundation bolt, 102 for the bearing that is fixedly hinged, 103 be basic melt pit for being movably hinged bearing, 104 for push rod, 105 is hydraulic cylinder, 106.
Fig. 8 is the structural representation that the present invention takes turns band.
wherein, 512 is that second pin block, 513 is that first pin block, 514 is for backing plate.
Fig. 9 is the structural representation of kiln body discharge end.
The specific embodiment
are illustrated in figure 1 as the structural representation of roasting rotary furnace of the present invention.The present invention includes kiln body 5; The base 2 of kiln body 5 is provided with supporting and positioning mechanism 4 and transmission mechanism 3; The below of base 2 is provided with hydraulic tipping gear 1; Kiln body discharge end 502 is provided with solid discharging opening 501 and melt discharging opening 503, and kiln body feeding end 504 sides are provided with the kiln hood cover body 6 with burner 602, and the side of kiln hood cover body 6 is a feeder 7.
said supporting and positioning mechanism 4 comprises and lifts roller 401 and have along carrying roller 402; Two groups lift roller 401 and two groups the both sides that are arranged on kiln body 5 bottoms along carrying roller 402 are respectively symmetrically arranged; Lift roller 401 and be fixed on the base 2 through carrying roller bearing 404, support the total weight of kiln body 5 with having along carrying roller 402; Idler bearing adopts the Sliding bush structure, and bearing shell adopts the cast zinc alloy material.The wheel of kiln body feeding end 504 is with 511 to be arranged on and to lift on the roller 401, and the wheel of kiln body discharge end 502 is with 511 to be arranged on along on the carrying roller 402; Having along carrying roller 402 is to have in the both sides of carrying roller along 403, and the wheel of kiln body discharge end 502 is limited in along between two edges 403 of carrying roller 402 with 511, prevents kiln body 5 when discharging is tumbled, and kiln body 5 glides on supporting and positioning mechanism 4.Top at gear support 302 and two carrying roller bearings 404 is provided with screw-down type grease cup 9, regular oil injecting lubricating, and the manual at regular time and quantity lubricating system of the lubricated employing between gear ring 510 and the gear 303 satisfies the functional requirement of testing equipment.
are illustrated in figure 2 as the structural representation of the kiln hood cover body 6 of roasting rotary furnace of the present invention.In conjunction with Fig. 1, kiln hood cover body 6 comprises first support 601 and the cover body 606 that is fixed on first support, 601 tops, and cover body 606 is the circular cover bodies 606 that are welded by the thick steel plate of 6mm, its inner lining refractory block layer 10.Be provided with and the corresponding exhaust opening 607 of kiln body inlet 507 and the flame import 604 of burner 602 with kiln body feeding end 504 relative cover bodies 606; The feeding-passage 605 that traverses cover body 606 communicates with exhaust opening 607; Feeding-passage 605 can make screw feeder tube 716 can stretch into kiln body 5 inner chambers through the screw feeder tube 716 of helixes feed equipment 706.Exhaust opening 607 communicates with cover body 606 interior flues 608, and flue 608 links to each other with the flue gas recovery and processing system with centrifugal exhauster through the exhanst gas outlet 610 of cover body 606 sides.Bottom at cover body 606 also is provided with temperature measuring equipment 603, and temperature measuring equipment 603 is to be made up of temperature thermocouple and mounting flange, is used for measuring the reduction temperature of kiln body 5 inside.
in addition, it can also be seen that from Fig. 2, and gear ring 510 adopts the some tangent spring-plates 505 and the outer wall of kiln body 5 to weld with the connected mode of kiln body 5, has alleviated labour intensity greatly.It is good to adopt latch plate 505 to connect damping capaicty, does not influence the service life of this place's refractory brick.
are illustrated in figure 3 as the cutaway view of bowing of Fig. 1.Can see; The helixes feed equipment 706 of feeder 7 feeding-passage on cover body 606 605, kiln body inlet 507 successively stretches into kiln body 5 inner chambers, and the minimum range between the temperature resistant encapsulation cover 703 of helixes feed equipment 706 ends and kiln body discharge end 502 intracavity sidewalls is 700mm.The burner 602 that is fixed on the cover body 606 adopts oil-gas two-way burners 602, satisfying the different material roasting, and the needs of different process method; Burner 602 is 12.5 ° with the angle that kiln body 5 axis are, and this angle can make burner 602 spray into the direct and material bed abundant heating of kiln body 5 inner bottom parts of flame in the kiln body 5, is more conducive to the reduction reaction of materials in the kiln body 5.Be provided with gap 8 between kiln body 5 and the cover body 606, gap 8 is 40～50mm; Its effect is: 1) make between kiln body 5 and the fixing cover body 606 of rotation to keep suitable distance, prevent that it from causing equipment attrition because of friction; 2) through the adjusting of this gap 8, make the suitable little negative pressure atmosphere of roasting rotary furnace kiln body 5 inner formation of the present invention, this atmosphere is the best atmosphere of material reduction.Also just because of having slight clearance 8 between kiln body 5 and the cover body 606, so the waste gas of kiln body 5 inner chambers has only minute quantity 8 to get into outside atmosphere from the gap, major part then gets into the flue gas recovery and processing system, is collected by the flue gas recovery and processing system, and handles and reclaim; Not only environmental protection, and recycle the valuable rare metal dust in the waste gas effectively.
are like Fig. 4 and the structural representation and its side view that is respectively feeder 7 of the present invention shown in Figure 5.Said feeder 7 comprises helixes feed equipment 706, running gear 707 and second support 714, and the track 715 of running gear 707 is between first support 601 and second support 714 of cover body 606, and end fixed thereon; The top of track 715 is a helixes feed equipment 706; One end of screw feeder tube 716 is provided with feed motor 712; One end that can stretch into kiln body 5 is provided with temperature resistant encapsulation cover 703; The screw feeder tube 716 built-in screw feeder bars 705 that drive by feed motor 712, screw feeder bar 705 is arranged on the heat-resisting bearing 702 in the temperature resistant encapsulation cover 703; Screw feeder tube 716 has feed hopper 710 in feed motor 712 ends, and screw feeder tube 716 has the feed opening 701 that Open Side Down in temperature resistant encapsulation cover 703 ends.Be provided with feed support 709 between screw feeder tube 716 and the track 715, screw feeder tube 716 is fixed on feed support 709 upper ends; The both sides of feed support 709 1 ends relatively are provided with one group of driven pulley 708; The both sides of the other end relatively are provided with one group of driving wheel 711; Driving wheel 711 is driven by the movable motor 713 that is fixed on feed support 709 sides; The feed support 709 of the opposite side that movable motor 713 is relative is provided with counterweight 717, so that feed support 709 balances, stable.On track 715 both sides at kiln hood cover body 6 places, also be respectively arranged with lead limit switch 704, guarantee that helixes feed equipment 706 walks in prescribed stroke.
are illustrated in figure 6 as the structural representation of hydraulic tipping gear 1 of the present invention.Hydraulic tipping gear 1 comprises that two 102, two of bearings that are fixedly hinged are movably hinged bearing 103, and two hydraulic cylinders 105; Two bearings 102 that are fixedly hinged are arranged on the bottom of kiln body 5 axial both sides, kiln body discharge end 502 bases 2 symmetrically; The bottom welding of bearing 102 1 ends and base 2 is fixedly hinged; The other end closing, adopts bearing pin to connect through pre-buried foundation bolt 101 in the basis between the pivoting support; Two are movably hinged the below that bearing 103 is arranged on kiln body 5 axial both sides, base 2 middle parts symmetrically; Be movably hinged the bottom welding of bearing 103 1 ends and base 2; The other end links to each other with the push rod 104 of hydraulic cylinder 105 through bearing pin, and close through 101 of pre-buried foundation bolts in basic melt pit 106 bottom of hydraulic cylinder 105.When two groups of hydraulic tipping gears 1 have guaranteed that roasting rotary furnace kiln body 5 of the present invention is tumbled discharge, synchronous operation stably.The angle that hydraulic tipping gear 1 can be tumbled is 10～15 °.
The hydraulic cylinder 105 of
hydraulic tipping gear 1 of the present invention is arranged in the basic melt pit 106, to reduce the shared spatial altitude of roasting rotary furnace equipment of the present invention, reduces investment.If hydraulic cylinder 105 is provided with on the ground, then certainly will need improve the height of base front end fulcrum simultaneously, make the structure of whole roasting rotary furnace and relevant device all will do can cause unnecessary waste to change.Fruit hydraulic cylinder 105 is set directly on the base 2 for another example, and fulcrum also should be above base 2 so, and the parts of tumbling are kiln bodies 5; Yet kiln body 5 is a cylindrical shape, if a hydraulic cylinder 105 supports 5 upsets of kiln body; Obviously stable inadequately; Then will in kiln body 5 both sides two or more be set symmetrically at least, if will reach steady upset, being provided with between hydraulic cylinder 105 and the kiln body 5 understood more complicated; And if upset kiln body 5 can make gear ring 510 separate with the gear 303 of transmission mechanism 3, because the machine error that the bad control of precision causes tends to make occur the not good problem of engagement between gear, there is potential safety hazard in long-time the use when resetting.
Working state figure when
are illustrated in figure 7 as roasting rotary furnace of the present invention and tumble discharge, the working state figure during in conjunction with the feed of Fig. 1, use of the present invention is following.
are when carrying out reduction roasting to low-grade lateritic nickel ore material; Variable-frequency motor 304 in the transmission mechanism 3 starts; 5 entrys into service of kiln body, burner 602 at first adopts the diesel oil heat supply, and temperature measuring equipment 603 monitor temperatures are in the scope of technological requirement.Start the movable motor 713 of running gear 707 and the feed motor 712 of helixes feed equipment 706; Material gets in the screw feeder tube 716 of helixes feed equipment 706 from feed hopper 710; Feed opening 701 by screw feeder bar 705 forward end is carried, and movable motor 713 drives driving wheel 711, the helixes feed equipment 706 that driving wheel 711 drives on the feed support 709; Feeding-passage on cover body 606 605, exhaust opening 607, kiln body inlet 507 get into kiln body 5 inner chambers successively; When screw feeder tube 716 ends of helixes feed equipment 706 have just got into kiln body 5 inner chambers; Promptly begin by feed opening 701 blankings; And material constantly gets into kiln body 5 inner chambers by feed opening 701 in helixes feed equipment 706 moves ahead process; When driven pulley 708 walks to lead limit switch 704 places; The temperature resistant encapsulation cover 703 of helixes feed equipment 706 arrives minimum range with the spacing of kiln body 5 intracavity sidewalls at this moment, and movable motor 713 drives driving wheels 711 and goes backward, and the screw feeder tube 716 of helixes feed equipment 706 is extracted out from kiln body 5 inner chambers; According to arts demand, in screw feeder tube 716 extractions, can continue feed, and the once reciprocating feed is not enough, can repeatedly reciprocal feed.After stopping the feed process, helixes feed equipment 706 retreats to kiln hood cover body 6 sides.Under 1250～1350 ℃ temperature conditions, reduction 80～100min, material is after kiln body 5 inner chambers fully reduce, and the discharge door of the solid discharging opening 501 of kiln body discharge end 502 is opened in manual work; Hydraulic tipping gear 1 is started working, and base 2 is that fulcrum overturns forward with the bearing 102 that is fixedly hinged, and the transmission mechanism 3 on the base 2 is tumbled with kiln body 5 with supporting and positioning mechanism 4 simultaneously, and material changes water quenching technology over to behind solid discharging opening 501 rows; Hydraulic tipping gear 1 resets, and closes the discharge door of solid discharging opening 501, the reduction roasting of beginning next group material.
are when carrying out reduction roasting to low-grade lead-zinc material, or when handling scrap battery, the process of the feed course of work and upset kiln body 5 is the same.Just when discharge, round steel spare 509 is knocked in manual work, through the mud bubble 508 that is provided with melt material is discharged from melt discharging opening 503.
are illustrated in figure 8 as roasting rotary furnace of the present invention and take turns the structural representation with 511.For the kiln body 5 that makes the roasting rotary furnace high temperature resistant, indeformable and run well under hot conditions; The wheel be with 511 and kiln body 5 outer walls between be provided with some backing plates 514; The left end of backing plate 514 is positioned at wheel and is with outside 511; Weld with kiln body 5 outer walls; And be welded with on it with wheel and be with corresponding second pin block 512 of 511 1 sides, the right-hand member of backing plate 514 also is positioned at wheel to be with outside 511, and on the same excircle of these end both sides, kiln body 5, is welded with first pin block 513 respectively; Second pin block 512 of adjacent backing plate 514 is welded on the right-hand member of this backing plate 514, the right-hand member of backing plate 514 and 5 welding of kiln body, and two first pin blocks 513 of adjacent backing plate 514 are welded on the both sides up and down of this backing plate 514 respectively.Pass through said structure; Its advantage is: 1) end with backing plate 514 welds one with kiln body 5, and the other end of backing plate 514 is not fixedly connected with kiln body 5, through first pin block 513 being set with backing plate 514 axial location; Second pin block 512 is installed on backing plate 514, is played the effect of fast pulley band 511; Its installation method is simple, improves the installation effectiveness of equipment greatly.2) backing plate 514 and kiln body 5 fixing ends are arranged alternately in wheel with 511 both sides, and second pin block 512 on it equally also is arranged alternately in wheel with 511 both sides; Because the thickness of first pin block 513 less than the thickness of backing plate 514, is changed wheel at needs and was with 511 o'clock, second pin block 512 that only needs will take turns with 511 1 sides unloads, and can will take turns and be with 511 to pull down, and is with 511 so be easy to change wheel.
are illustrated in figure 9 as the structural representation of roasting rotary furnace kiln body discharge end 502 of the present invention.Because the solid material discharging is easier to, therefore a solid discharging opening 501 is set on kiln body discharge end 502 and gets final product; And the liquid material discharging is comparatively difficult; Therefore two melt discharging openings 503 are set on kiln body discharge end 502; Two melt discharging openings 503 coexist with fixing discharging opening 501 on the circumference; This circumference is the bottom surface circumference of kiln body 5 cylindric inner chambers, and two melt discharging openings 503 are 120 ° with the angle that circle center line connecting is.The middle part of kiln body discharge end 502 also is provided with observation panel 506, just because therefore the switching of observation panel 506 can not be provided with the 3rd melt discharging opening 503 again.
Claims (10)
1. roasting rotary furnace; Comprise kiln body (5); The base (2) of kiln body (5) is provided with supporting and positioning mechanism (4) and transmission mechanism (3); It is characterized in that: the below of base (2) is provided with hydraulic tipping gear (1); Kiln body (5) discharge end (502) is provided with solid discharging opening (501) and melt discharging opening (503), and kiln body (5) feeding end (504) side is provided with the have burner kiln hood cover body (6) of (602), and the side of kiln hood cover body (6) is feeder (7).
2. roasting rotary furnace as claimed in claim 1; It is characterized in that: said kiln body (5) inner lining refractory block layer (10); The top and bottom of kiln body discharge end (502) intracavity sidewall are respectively arranged with solid discharging opening (501) and melt discharging opening (503), and the sidewall middle part of kiln body discharge end (502) inner chamber is provided with observation panel (506); The outside end enclosure structure that adopts the orthodrome transition of kiln body (5); Gear ring (510) on kiln body (5) outer wall is meshed with the gear (303) of transmission mechanism (3), and gear (303) links to each other through the same variable-frequency motor of reductor (305) (304); On kiln body (5) outer wall, the both sides of gear ring (510) also are provided with wheel band (511); Said supporting and positioning mechanism (4) comprises and lifts roller (401) and have along carrying roller (402); The wheel band (511) of kiln body feeding end (504) is arranged on and lifts on the roller (401), and the wheel band (511) of kiln body discharge end (502) has been arranged on along on the carrying roller (402); The bottom of the base (2) of kiln body discharge end (502) has the bearing of being fixedly hinged (102), and the opposite side of base (2) is continuous with the push rod (104) of below hydraulic tipping gear (1) through being movably hinged bearing (103).
3. roasting rotary furnace as claimed in claim 1 is characterized in that: gear ring 510 adopts the some tangent spring-plates 505 and the outer wall of kiln body 5 to weld with the connected mode of kiln body 5.
4. roasting rotary furnace as claimed in claim 3 is characterized in that: hydraulic tipping gear (1) comprises two bearings that are fixedly hinged (102), and two are movably hinged bearing (103), and two hydraulic cylinders (105); Two bearings that are fixedly hinged (102) are arranged on the axially bottom of both sides, kiln body discharge end (502) base (2) of kiln body (5) symmetrically; The bottom welding of bearing (102) one ends and base (2) is fixedly hinged; The other end closing (101), adopts bearing pin to connect through pre-buried foundation bolt in the basis between the pivoting support; Two are movably hinged bearing (103) and are arranged on the axially below at both sides, base (2) middle part of kiln body (5) symmetrically; Be movably hinged the bottom welding of bearing (103) one ends and base (2); The other end links to each other with the push rod (104) of hydraulic cylinder (105) through bearing pin, the bottom of hydraulic cylinder (105) through pre-buried foundation bolt (101) in basic melt pit (106) closing.
5. roasting rotary furnace as claimed in claim 1; It is characterized in that: kiln hood cover body (6) comprises the cover body (606) of the inner lining refractory block layer (10) on first support (601) and first support (601) top; Cover body (606) is provided with the exhaust opening (607) corresponding with the kiln body inlet (507) of kiln body discharge end (502) and the flame import (604) of burner (606), and the flue (608) of exhaust opening (607) in cover body (606) links to each other with the flue gas recovery and processing system.
6. roasting rotary furnace as claimed in claim 5 is characterized in that: be provided with gap (8) between kiln body (5) and the cover body (606), gap (8) can be (40)～(50) mm.
7. roasting rotary furnace as claimed in claim 1; It is characterized in that: feeder (7) comprises helixes feed equipment (706), running gear (707) and second support (714); Track (715) one ends of running gear (707) are arranged on second support (714); The other end of running gear (707) track (715) has lead limit switch (704), and is arranged on first support (601); Feed support (709) both sides that are fixed on helixes feed equipment (706) below are respectively arranged with one group of driving wheel (711) and the one group of driven pulley (708) with movable motor (713) that is positioned on the track (715); Helixes feed equipment (706) comprises screw feeder tube (716); The distolateral feed motor (712) that links to each other with screw feeder tube (716) that is provided with of the inlet of screw feeder tube (716); The arrival end top is feed hopper (710), and the below of the port of export is feed opening (701).
8. roasting rotary furnace as claimed in claim 7; It is characterized in that: screw feeder tube (716) one ends of helixes feed equipment (706) are provided with feed motor (712); One end that can stretch into kiln body (5) is provided with temperature resistant encapsulation cover (703); The built-in screw feeder bar (705) that drives by feed motor (712) of screw feeder tube (716), the other end of screw feeder bar (705) is arranged on the heat-resisting bearing (702) in the temperature resistant encapsulation cover (703); Screw feeder tube (716) and screw feeder bar (705) between driven pulley (708) and the temperature resistant encapsulation cover (703) preferably adopt heat resisting steel.
9. the band of taking turns as claimed in claim 2; Be provided with some backing plates (514) between wheel band (511) and kiln body (5) outer wall; The left end of backing plate (514) is positioned at outside the wheel band (511), with the welding of kiln body (5) outer wall, and is welded with and takes turns band corresponding second pin blocks of (511) one sides (512) on it; The right-hand member of backing plate (514) also is positioned at outside the wheel band (511), and on the same excircle of these end both sides, kiln body (5), is welded with first pin block (513) respectively; Second pin block (512) of adjacent backing plate (514) is welded on the right-hand member of this backing plate (514); The right-hand member of backing plate (514) and kiln body (5) welding, two first pin blocks (513) of adjacent backing plate (514) are welded on the both sides up and down of this backing plate (514) respectively.
10. like the described roasting rotary furnace of claim 1-9, it is characterized in that: kiln body (5) length is 1.5～15m, φ 3～6m.
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| CN105651042A (en) * | 2016-03-09 | 2016-06-08 | 江西稀有稀土金属钨业集团有限公司 | Rotary furnace, flue inlet of rotary furnace and method for prolonging service life |
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| CN106989597A (en) * | 2017-03-01 | 2017-07-28 | 陈婷 | A kind of chemical industry smelting furnace of convenient discharging |
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| CN102798287B (en) | 2014-05-14 |
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