CN102589288A - Rotary sintering machine - Google Patents
Rotary sintering machine Download PDFInfo
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- CN102589288A CN102589288A CN2012100672207A CN201210067220A CN102589288A CN 102589288 A CN102589288 A CN 102589288A CN 2012100672207 A CN2012100672207 A CN 2012100672207A CN 201210067220 A CN201210067220 A CN 201210067220A CN 102589288 A CN102589288 A CN 102589288A
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Abstract
The invention belongs to the technical field of metallurgy, and relates to a rotary sintering machine, which comprises an annular rotary portion, a sealing device and a main air draft flue. The rotary portion comprises an annular rotary frame, an air box and a grate bed, and the sealing device is provided with double water rings. The effective area of a single sintering machine can reach 800 square meters, the air leakage ratio of the sintering machine is lower than 1%, and investment of a dedusting and desulfurization system is reduced by half. The sintering machine can be used for reaching the sintered ore output of 3 million tons per year, power consumption of a main exhaust fan can be reduced by 40 million kW.h per year, electric charge can be 20 million Yuan per year, CO2 (carbon dioxide) emission can be decreased by 41 million tons per year, maintenance cost can be reduced by 10 million Yuan per year, SO2 (sulfur dioxide) emission can be decreased by 3000 tons per year, and construction investment of matched dedusting and desulfurization facilities is reduced by half. If 10% of domestic sintering machines adopt the structure of the rotary sintering machine, power consumption is reduced by 480 million kW.h per year, and CO2 emission can be decreased by 490 million tons per year.
Description
Technical field
The invention belongs to metallurgical technology field, relate to a kind of agglomerating plant of producing sintering deposit.
Background technology
Existing sintering machine mainly contains two kinds of continuous pallettype sintering machine and circular travelling sintering machines.
Institute's extensive use at present
Continuous pallettype sintering machineBe Dwight Lioyd dwight lioyd sintering machine dl, form by chassis, sealing chute, bellows, great wheel, tail wheel, drive unit, loop, skeleton etc.Grid section is installed on the chassis, and the grid section on the whole chassis of sintering machine is formed the bed of combing, and the comb bed that is positioned at cloth, igniting and down draft sintering zone carries raw materials for sintering and accomplishes sintering process above that.
Continuous pallettype sintering machine has equipment maturation, reliable, and the unit specification is big, advantages such as good product quality.Since first Dwight Lioyd dwight lioyd sintering machine dl was born in the world, its specification of equipment was always in continuous increase.Now, large-scale Dwight Lioyd dwight lioyd sintering machine dl chassis effective width is 5 meters, and the sintering machine effective length is 100 meters, and specification of equipment is that its effective exhausting area is 500 square metres.Promote the continuous power that increases of specification of equipment and be that the product quality of (1) large-type sinterer is better.One of them major reason is that in sintering process, the sinter strength at edge is relatively poor; The effective width of large-type sinterer is big, and the marginal layer proportion of sintering deposit is little, and the intermediate layer proportion is big preferably for intensity; So the quality of final finished sintering deposit is better.(2) economy of large-type sinterer is better.When sintering machine was bigger, the higher marginal layer proportion of the rate of return mine descended, thereby makes sintering finished rate improve, and unit consumption descends, thereby cost is descended.Simultaneously, the labor productivity of the sintering plant of use large-type sinterer is higher, has also reduced cost of labor.
Shortcomings such as but continuous pallettype sintering machine exists, and air leak rate of air curtain intrinsic, that can't overcome is high, sintering deposit ton ore deposit power consumption is high, investment is big, the chassis effective rate of utilization is low, maintenance cost height, air leak rate of air curtain is usually up to 40%～60%.
Leak out in a large number and can bring the harm of the following aspects:
(1) leak out and make sintering deposit ton ore deposit power consumption increase considerably, make the sintering deposit cost increase, economy reduces.Usually, the electric weight waste that sintering deposit causes because of leaking out is about 15～20kW.h/t, about 7～10 yuan/t of corresponding increase sintering deposit production cost;
(2) leak out and make the exhausting system exhaust gas volumn increase greatly, the specification of the flue of exhausting system, deduster, blower fan, chimney is compelled to be increased, and equipment investment increases.Usually, make the exhausting system investment increase about 35%～50% because of leaking out.Accordingly, maintenance cost raises about 30%～45%;
(3) leak out and make sintering flue gas desulfurization system desulfurized effect reduce.Its reason is, under the constant situation of total sulfur content, leaking out makes the flue gas total amount almost double; About causing the sulfur-containing smoke gas flow velocity to be doubled; Desulfuration efficiency is reduced significantly, thereby make the sulphur emissions absolute magnitude increase greatly, cause serious environmental problem;
(4) in order to solve the problem that the sulphur emissions amount increases, must strengthen the specification of equipment of sintering flue gas desulfurization system, this has increased investment and maintenance cost again, and these expenses also will enter into the production cost of sintering deposit, makes the economy variation;
(5) leak out and make the sinter fume temperature reduce, thereby make the heat energy grade capable of using that flue gas contained reduce, make the residual heat resources that originally can recycle become not recycle and be worth;
(6) leak out and make the emission amount of carbon dioxide cause because of generating increase considerably.Usually, leak out and make CO2 emissions increase by 18～25kg/t
(sintering deposit)About.Also cause environmental problem more outstanding indirectly.
The chassis effective rate of utilization is meant in the chassis of installing on the sintering machine, the ratio of the chassis quantity that is positioned at cloth, igniting, down draft sintering and discharging zone and total chassis quantity.Because of the chassis quantity on loop and great wheel, the tail wheel is a lot, the chassis effective rate of utilization of continuous pallettype sintering machine has only 37%～48% usually.Low construction investment and the maintenance cost of will making of chassis utilization rate increases.
Circular travelling sintering machineBe that a kind of bed of combing is planar annular and the sintering machine that centers on vertical centre axis rotation; The bellows ring of being made up of the plurality of sector bellows, grid section, annular girder, support roller, centering gear wheel, center smoke collection pipe, drive unit etc. are formed; Its whole grid sections that are installed on the bellows ring constitute an annular comb bed, are used to carry raw materials for sintering and accomplish sintering process above that.The Chinese patent document CN2099288U (patent No.: ZL91220108.8), the CN1059268C (patent No.: ZL97108048.8), the CN2808931Y (patent No.: ZL200420079739.8) announced the patent of three kinds of circular travelling sintering machines.
Owing to structural reason; Circular travelling sintering machine can adopt the horizontal annular water sealed tank to seal, and this has just eliminated a topmost factor of leaking out, and air leak rate of air curtain is low so circular travelling sintering machine exists, the low advantage of sintering deposit ton ore deposit power consumption; Simultaneously, also have small investment, advantage that maintenance cost is low.But its specification of equipment is little, poor product quality, yield rate be low, except that power consumption other consume high, labor productivity is low, specification of equipment is 16～28 square metres usually, is mainly used in small-sized sintering plant at present.
Since first circular travelling sintering machine of nineteen ninety China puts into production; Although how tame Design Research Unit and sintering plant are arranged to its constantly research and improvement; But this equipment is not well developed, and particularly aspect the most important equipment maximization, does not almost make progress.So far, specification of equipment is 35 square metres of effective sintering areas to the maximum, and bed of material width is 1.7 meters on the sintering machine, 500 millimeters of bed depths.This just makes that also the sinter quality of its production is relatively poor, can not satisfy the needs of big-and-middle-sized blast furnace.Equipment enlarging does not have the most important reason of remarkable break-throughs to be:
(1) rotating part of the circular travelling sintering machine of prior art is a disk.Rotating part be meant sintering machine comb bed and with the bed rotating whole devices synchronously of combing.(patent No.: the prior art of ZL91220108.8) announcing, rotating part comprise comb bed, bellows, annular girder, spoke, reducer pipe, tubular type expansion bend, center smoke collecting ring, trunnion etc. as far as Chinese patent documentation CN2099288U; (patent No.: the prior art of ZL97108048.8) announcing, rotating part comprise that annular disk, grid section, annular girder, main air draft, exhausting arm, air quantity that bellows are formed regulate seal valve etc. as far as Chinese patent documentation CN1059268C; (patent No.: the prior art of ZL97108048.8) announcing, rotating part comprise the annular siege be made up of fan-shaped bellows splicing, telescoping tube, exhausting arm, middle smoke collection pipe etc. as far as Chinese patent documentation CN1059268C.Rotating part be a disk be meant rotating part the entire infrastructure parts when rotated, with forming being the disk of diameter apart from the centre of gyration a bit inswept circle farthest.That is to say, any device that does not rotate synchronously with this rotating part can not be set in this circle scope.Must cross over the comb auxiliary device of bed of sintering machine because of technological reason, for example distributing device, igniter etc. can only hang and be installed in the bed top of combing, and hanging beam then need be crossed over the diameter of rotating part disk, and when the sintering machine specification was very big, this arrangement is difficulty very;
(2) the bellows ring of the fan-shaped bellows splicing of the circular travelling sintering machine of prior art is communicated with through radial exhausting arm with the center smoke collection pipe; The exhausting arm rotates with the bellows ring synchronously, and the strong point one end is at the bellows ring, and the other end is smoke collecting ring at the center; And also telescopic joint need be set in order to solve thermal expansion problem; When the sintering machine specification was very big, it is very big that exhausting is propped up length of tube, supports very difficulty;
(3) connected mode and the relative position of fan-shaped bellows of the circular travelling sintering machine of prior art and annular girder; Determined that the bellows depth-width ratio is bigger; The height of bellows needed to increase in proportion when comb bedside degree increased on the bellows; When the sintering machine area was very big, the bellows height was very big, and bad stability and construction weight are very big.
So the circular travelling sintering machine of prior art is difficult to increase specification of equipment, and because edge and top layer sinter quality are poor; The shared ratio of the edge of the circular travelling sintering machine of small dimension and top layer sintering deposit is very high; Cause the poor product quality of small-sized circular travelling sintering machine, yield rate is low, consumes high.Simultaneously, labor productivity is also very low.The common specification of equipment of circular travelling sintering machine is 16～28 square metres, reaches 35 square metres individually, is mainly used in small-sized sintering plant at present.Although the advantage that air leak rate of air curtain is low, power consumption is low is arranged, circular travelling sintering machine is compared with big-and-middle-sized continuous pallettype sintering machine at aspects such as product quality, yield rate, labor productivity does not have competitiveness fully.National industrial policies are listed small-sized sintering machine in superseded catalogue.
Summary of the invention
The objective of the invention is to overcome in the prior art continuous pallettype sintering machine and have that air leak rate of air curtain is high, the high deficiency of sintering deposit ton ore deposit power consumption, and deficiency such as the circular travelling sintering machine specification of equipment is little, poor product quality, labor productivity are low.A kind of revolution sintering machine is provided, makes that its air leak rate of air curtain is low, specification of equipment is big, product quality is high, be applicable to big-and-middle-sized sintering plant.Concrete technology constitutes:
(1) the revolution sintering machine is the sintering machine that complete machine comb bed constitutes a horizontal annular plane; Comprise rotating part, sealing device, exhausting flue collector, it is characterized in that: described rotating part is annular, comprises the bellows of a plurality of circular array and the comb bed of annular; Sealing device is the two water ring sealing devices with annular gas passage; Difference each bellows of airtight connection and exhausting flue collector, rotating part are arranged on and support on the transmission device, can rotate around the central axis of himself.The bed of combing be meant by on the sintering machine all grid sections form have a ventilation gap, be used to the part of carrying raw materials for sintering and accomplishing the down draft sintering technical process above that.Rotating part be meant sintering machine comb bed, bellows and with the bed rotating whole devices synchronously of combing.Rotating part is an annular; The entire infrastructure parts of rotating part when rotated in other words; With form with apart from the centre of gyration farthest a bit and a bit inswept annulus nearest apart from the centre of gyration, a bit inswept diameter of a circle nearest apart from the centre of gyration promptly is the internal diameter of rotating part.That is to say, in this rotating part inside diameter ranges, have a cylindrical region, have no the structural member that rotates synchronously with this rotating part in this zone, the device except that rotating part can be arranged in this zone.Bellows are the exhausting unit that are made up of steel plate, are generally big, following young bucket shape suitable for reading, and all bellows are arranged in complete annular, directly interconnect between the adjacent bellows or are interconnected by connecting elements, constitute the main body of rotating part.Bellows top is provided with the comb bed of being made up of grid section for big mouthful, and bellows bottom osculum is an air outlet, during the work of revolution sintering machine; The comb bed slit that air-flow is provided with from bellows top gets into, and flows out from lower air outlet, and the exhausting space between the adjacent bellows is independently of one another; Directly do not communicate mutually; Have only through two water ring sealing devices just to communicate with each other, and be communicated with the exhausting flue collector via two water ring sealing devices, the bellows set inside has thermal insulation layer.The support transmission device is a prior art; Comprise support roller group, centering wheels, transmission device and frame etc.; The support roller group is arranged on the frame, the load such as material when supporting rotating part and work thereof, and the centering wheels are the rotating part location; Make its central axis keep fixing, the actuator drives rotating part is around himself central axis rotation.Described pair of water ring sealing device is the device with annular gas passage of being enclosed by rotating ring, stationary ring and inner ring water ring, outer ring water ring.
(2) described rotating part is provided with the annular with grid and turns round frame as the connecting elements between the bellows; Annular revolution frame is the member of being processed by steel; Can the central axis around himself rotate on the transmission device supporting, bellows are arranged in the grid of annular revolution frame and supported by it, and are independently of one another between the shell mechanism of adjacent bellows; And the free wxpansion gap more than several millimeters arranged; It is whole to connect into an annular through annular revolution frame each other, and the bed of combing is arranged on the top of whole bellows, that is to say that the grid section by ventilation gap that whole bellows top is provided with is formed to comb bed.
(3) between the grid of described annular revolution frame and bellows, be provided with the bellows positioner that is slidingly connected and forms by orthogonal two pairs.The effect of this positioner is when box temperature changes; Orthogonal two pairs of bellows positioners of forming of being slidingly connected make the bellows can free wxpansion or contraction, and the relative position that bellows central point and annular is turned round between the grid central point of frame is fixed.
(4) described bellows positioner; Corresponding each bellows are made up of 4 groove locating pieces and 4 raised line locating pieces respectively; 4 groove locating pieces are on four limits of a fan-shaped grid that cross is fixedly installed on annular revolution frame; 4 raised line locating pieces are on four limits that cross is fixedly installed on each bellows, and the raised line of 4 raised line locating pieces embeds respectively in the groove of 4 groove locating pieces, is matched in clearance between raised line and the groove.
When box temperature is gone up and down; The raised line locating piece changes with the harmomegathus of bellows size; Receive the restriction of groove and raised line matched in clearance; The raised line locating piece will slide along the groove locating piece that annular turned round on the frame, but the central point of the central point of bellows and the grid of annular revolution frame overlaps all the time, thereby under the prerequisite that guarantees correct location, eliminates the stress that variations in temperature is brought.
(5) described pair of annular gas passage that the water ring sealing device is enclosed by rotating ring, stationary ring and inner ring water ring, outer ring water ring.Rotating ring is made up of interior tubulose ring flat-plate and outer tubular ring flat-plate, and rotating ring links to each other with rotating part, and turns round synchronously with rotating part; Rotating ring is communicated with the bellows of rotating part; Stationary ring is made up of four layers of different tubulose ring flat-plate peace ring flat-plate of diameter, on the flat ring flat-plate a plurality of perforates is arranged, and is communicated with the exhausting flue collector.Ring one, interior ring two, outer shroud one, outer shroud two in four layers of tubulose ring flat-plate of stationary ring are called respectively according to diameter from small to large, interior ring one, interior ring two peaceful ring flat-plates surround a toroidal cavity, and inner water-filling or other liquid form the inner ring water ring; Outer shroud one, outer shroud two peaceful ring flat-plates surround a toroidal cavity, and inner water-filling or other liquid form the outer ring water ring.The inner ring water ring that the interior tubulose ring flat-plate of rotating ring inserts stationary ring forms interior sealing water ring, and the outer ring water ring that the outer tubular ring flat-plate of rotating ring inserts stationary ring forms the external seal water ring.The ring cavity that rotating ring, stationary ring and inner ring water ring, outer ring water ring are enclosed is the annular gas passage of revolution sintering machine.
(6) described bellows bottom is provided with bellows arm and control valve, and bellows arm, control valve are communicated with bellows, and control valve is used for regulating the ventilation of bellows at different sections.
(7) be set with the curve adjustment rail on the support transmission device, described control valve pattern is a butterfly valve, comprises valve plate, valve shaft, crank, roller; The roller of control valve contacts with the curve adjustment rail; When revolution sintering machine when work, along with the rotation of rotating part, the roller of control valve the curve adjustment rail effect change position down; And then, reach the purpose that changes control valve opening through crank, the rotation of valve shaft drive valve plate.
(8) described exhausting flue collector is set to annular flue, and a plurality of arms that are communicated with is arranged between two water ring sealing devices, and the annular center of annular flue overlaps with the sintering machine center, and purpose is to make the cross-sectional area of two water ring sealing devices to reduce.
The operation principle of revolution sintering machine is:
The revolution sintering machine is installed on the Equipment Foundations, and along a fixed-direction rotation, cloth district, seed region, discharge zone above the revolution sintering machine is combed bed are separately installed with the employed cloth facility of SINTERING PRODUCTION, igniter and discharging facility; The bellows of rotating part are communicated with main exhausting flue through two water ring sealing devices, are communicated with deduster, desulfurizer and main exhauster and chimney then.Rotating part continuous rotation under the driving of supporting transmission device, in the cloth district, the cloth facility is layered on grate-layer material and compound on the comb bed of rotating part; Along with the rotation of rotating part, continuous the moving forward of bed of combing, the bed of material on the bed of combing gets into the igniter that is positioned at seed region in company with the bed of combing; Solid fuel in the top layer is carried out sintering then by the flame ignition of igniter under the exhausting action of negative pressure, air gets into from bed of material surface; Pass the bed of material, with the fuel reaction burning in the bed of material, burnt gas is under the swabbing action of main exhauster; Pass the bed of combing; Get into bellows again, get into main exhausting flue, get into chimney via deduster, desulfurizer and main exhauster at last and discharge through two water ring sealing devices.When the bed of combing closed on discharge zone, sintering process was accomplished, and the bed of material all becomes sintering deposit.When the bed of combing arrived discharge zone, the discharging facility unloaded sintering deposit.Rotating part continuously rotates, and SINTERING PRODUCTION is carried out continuously.
Description of drawings
Fig. 1 is the structure principle chart of the embodiment of the invention 1;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the partial enlarged drawing at T1 position among Fig. 1;
Fig. 4 is the sectional view of rotating part;
Fig. 5 is the structural representation of the groove locating piece in annular revolution frame and the bellows positioner;
Fig. 6 is the partial enlarged drawing at T5 position among Fig. 5;
Fig. 7 is the structural representation of the raised line locating piece in bellows and the bellows positioner;
Fig. 8 is the upward view of the raised line locating piece in bellows and the bellows positioner;
Fig. 9 is the structural representation of the embodiment of the invention 2;
Figure 10 is the vertical view of Fig. 9;
Figure 11 is the structural representation of the embodiment of the invention 3;
Figure 12 is the partial enlarged drawing at T11 position among Figure 11.
The specific embodiment
Carry out detailed explanation with reference to accompanying drawing to realizing revolution sintering machine of the present invention in conjunction with embodiment:
Embodiment 1
Fig. 1 to Fig. 8 is a kind of sketch map that turns round sintering machine embodiment of expression the present invention, and wherein Fig. 1 to Fig. 4 has expressed the general structure of revolution sintering machine, the 1st, the rotating part of revolution sintering machine; The 2nd, two water ring sealing devices, the 3rd, annular flue, the 4th, support transmission device; Wherein, the 41st, frame, the 42nd, support roller group; The 43rd, centering gear wheel group, the 44th, transmission device, the 5th, curve adjustment rail.A-A is the axis of rotation of revolution sintering machine among Fig. 1, and Φ 0 is the middle footpath of rotating part 1, and its value is 28 meters, and Φ 1 is the internal diameter of rotating part 1, and its value is 22 meters; BL representes the cloth district of sintering machine among Fig. 2, and DQ representes the seed region of sintering machine, and XL representes the discharge zone of sintering machine.
In this embodiment, the internal diameter Φ 1 of rotating part 1 is 22 meters.That is to say, are the spaces that can freely utilize in the 22 meters scopes of diameter that are the center of circle with this centre of gyration, can arrange the device except that rotating part, and the part of frame 41 and centering gear wheel group 43 are arranged in this cylindrical region.Auxiliary device such as distributing device, igniter is crossed over and is installed in the bed top of combing, and its medial cradle is installed in this circle.
The rotating part 1 of this embodiment comprises annular revolution frame 11, a plurality of bellows 12, the bed 13 of combing, a plurality of bellows arm 14, a plurality of control valve 15, feel relieved rail 16, inside and outside carrying rails 17, bellows positioner 18, the chain drive-belt 19 etc. of ring-shaped gate lattice structure.The quantity of bellows 12 is 30, is arranged in annular revolution frame 11 grids and receives annular to turn round frame to support, and all the bellows upper surface constitutes continuous circular shape; Leave several millimeters expansion clearance between the adjacent bellows; Grid section is arranged on the bellows 12, and all grid section constitutes the bed 13 of combing, and each bellows 12 air outlet place is provided with bellows arm 14; Be provided with control valve 15 in the bellows arm 14, and be communicated with two water ring sealing devices 2.In revolution sintering machine when work,, air-flow gets into from the grid section slit on bellows 12 tops, flows out from the air outlet of the bellows arm 14 of bellows 12 bottoms, and is independently of one another between the adjacent bellows, not connected.
Two water ring sealing devices 2 comprise rotating ring 21 and stationary ring 22, and rotating ring 21 is made up of with outer tubular ring flat-plate 212 interior tubulose ring flat-plate 211, and cross sectional shape is inverted U-shaped; Rotating ring 21 links to each other with rotating part 1, and turns round synchronously with rotating part 1, and rotating ring 21 is communicated with bellows 12 on the rotating part 1; Stationary ring 22 is made up of four layers of different tubulose ring flat-plate peace ring flat-plate 225 of diameter; Cross sectional shape is three U-shapeds of solid matter, on the flat ring flat-plate 225 a plurality of perforate D is arranged, and is communicated with flue 5.Four layers of tubulose ring flat-plate of stationary ring 22 are respectively interior ring 1, interior ring 2 222, outer shroud 1, outer shroud 2 224 according to diameter from small to large; In ring 1, interior ring 2 222 peaceful ring flat-plates 225 surround the ring cavity that a cross section is a U-shaped; Inner water-filling, ring hydrosphere in forming; Outer shroud 1, outer shroud 2 224 peaceful ring flat-plates 225 surround the toroidal cavity that a cross section is a U-shaped, and inner water-filling forms the outer shroud hydrosphere.Sealing hydrosphere in the interior ring hydrosphere that the interior tubulose ring flat-plate 211 of rotating ring 21 inserts stationary ring forms, the outer shroud hydrosphere that the outer tubular ring flat-plate 22 of rotating ring 21 inserts stationary ring forms the external seal hydrosphere.Cross section between rotating ring, stationary ring and interior ring hydrosphere and the outer shroud hydrosphere is that the ring cavity of rectangle is the annular gas passage of revolution sintering machine.
The support roller group 42 that supports transmission device 4 is fixedly installed on the frame 41 with centering gear wheel group 43, and support roller group 42 is arranged to Crossed Circle, promptly in ring support roller group, be arranged on the inboard of rotating part 1; Outer shroud support roller group is arranged on the outside of rotating part 1, and the ring heart of inner and outer rings support roller group overlaps with the centre of gyration of rotating part 1, is axis A-A.Rotating part 1 is arranged on the support roller group 42, load such as the raw material when support roller group 42 supports rotating part 1 and work thereof, sintering deposit, and centering gear wheel group 43 makes rotating part 1 location, and the centre of gyration remains unchanged during sintering machine work just.Be fixedly installed on chain drive-belt 19 engagements that are provided with on sprocket wheel and the rotating part 1 of the transmission device 44 on the frame 41, drive rotating part 1 rotation.
Fig. 5, Fig. 6, Fig. 7, Fig. 8 have expressed annular revolution frame 11, a plurality of bellows 12 of ring-shaped gate lattice structure, the annexation of comb bed 13, a plurality of bellows arms 14, and by the structure and the operation principle of the orthogonal two pairs bellows positioners 18 formed of being slidingly connected.
The annular revolution frame 11 of ring-shaped gate lattice structure is made up of inside casing 111, housing 112 and articulated beam 113, constitutes 30 fan-shaped grid G between inside casing 111, housing 112 and the articulated beam 113.Quantity also is that 30 bellows 12 are separately positioned in the fan-shaped grid G of annular revolution frame 11, and supported by annular revolution frame 11.
The bellows positioner 18 of this embodiment has 30 covers; Every cover by 4 groove locating pieces promptly 181,182,183,184 and 4 raised line locating pieces promptly 185,186,187,188 constitute; Groove locating piece 181,182,183,184 is on four limits of each fan-shaped grid G that cross is fixedly installed on annular revolution frame 11; Raised line locating piece 185,186,187,188 is on four limits that cross is fixedly installed on each bellows; The raised line of raised line locating piece 185,186,187,188 embeds respectively in the groove of groove locating piece 181,182,183,184; Being matched in clearance between raised line and the groove, is a kind of being slidingly connected, and the central point J of bellows 12 and the central point H of the fan-shaped grid G of annular revolution frame 11 overlap.
Chain drive-belt 19 is arranged on the annular revolution frame 11; 2 groups of transmission devices 44 are fixedly installed on the frame 41; The sprocket wheel of transmission device 44 and chain drive-belt 19 engagements; Sprocket rotation drives the rotation of annular revolution frame, and the rotating ring 21 of annular revolution frame 11 and the bellows 12 that upward are provided with thereof, comb bed 13, bellows arm 14, control valve 15, two water ring sealing devices 2 etc. rotates around axis A-A simultaneously.
Among this embodiment, the pattern of control valve 15 is a butterfly valve.Be set with curve adjustment rail 5 on the frame 41.Control valve 15 comprises roller 151, crank 152, valve shaft 153, valve plate 154 etc., and valve plate 154 is arranged on the valve shaft 153, and valve shaft 153 has crank 152 in the valve body arranged outside, and crank 152 tops are provided with roller 151, and roller 151 contacts with curve adjustment rail 5.
The course of work explanation of embodiment 1:
The revolution sintering machine is installed on the Equipment Foundations, and direction of rotation is ω, and cloth district BL, seed region DQ, discharge zone XL above the revolution sintering machine is combed bed are separately installed with the employed cloth facility of SINTERING PRODUCTION, igniter and discharging facility; 3 outlets of annular flue are equipped with the connection pipeline, lead to deduster, desulfurizer and main exhauster and chimney.Rotating part 1 is continuous rotating along the ω direction under the driving of transmission device 44, the BL in the cloth district, and control valve 15 cuts out under 5 effects of curve adjustment rail, and the cloth facility is layered on grate-layer material and compound on the comb bed 13 of rotating part 1; Thickness is 700 millimeters, and section configuration is up-narrow and down-wide trapezoidal, along with the rotation of rotating part 1, and bed 13 continuous the moving forward of combing; The bed of material on the comb bed 13 gets into the igniter that is positioned at seed region DQ in company with the bed of combing, and at this moment, control valve 15 is opened under curve adjustment rail 5 acts on; Solid fuel in the top layer is carried out sintering then by the flame ignition of igniter under the exhausting action of negative pressure, air gets into from bed of material surface; Pass the bed of material, with the fuel reaction burning in the bed of material, burnt gas is under the swabbing action of main exhauster; Pass the bed 13 of combing, get into bellows 12 again, through bellows arm 14; Control valve 15 gets into two water ring sealing devices 2, gets into annular flue 3 again, gets into the chimney discharge via connecting pipeline, deduster, desulfurizer and main exhauster at last.When the bed 13 of combing closed on discharge zone XL, sintering process was accomplished, and the bed of material all becomes sintering deposit.When the bed of combing arrived discharge zone XL, control valve 15 cut out under 5 effects of curve adjustment rail, and the discharging facility unloads sintering deposit.Rotating part 1 continuously rotates, and SINTERING PRODUCTION is carried out continuously.
When the work of revolution sintering machine; Bellows 12 rising of temperature cycle property and reductions; Its expansion and contraction will make groove locating piece 181,182,183,184 and raised line locating piece 185,186,187,188 in the bellows positioner 18 slide each other; Groove locating piece 181,182,183,184 is fixedly installed on the annular revolution frame; Raised line locating piece 185,186,187,188 is fixedly installed on the bellows 12, and during bellows 12 gradient of temperatures, raised line locating piece 185,186,187,188 harmomegathus with the bellows size change; Receive the restriction of groove and raised line matched in clearance; Raised line locating piece 185,186,187,188 will slide along the groove locating piece 181,182,183,184 that annular turned round on the frame 11, but the central point H of the central point J of bellows 12 and the fan-shaped grid G of annular revolution frame 11 overlaps all the time, thereby under the prerequisite that guarantees correct location, eliminates the stress that variations in temperature is brought.
The bellows change in size scope of expanding with heat and contract with cold is provided with thermal insulation layer at the bellows inwall when reducing work.
The operation principle of control valve is: curve adjustment rail 5 is fixedly installed on the frame 41, and its floor projection is an annular, and the center of circle overlaps with the center of rotating part 1; In short transverse, curve adjustment rail 5 is different at the diverse location height of revolution sintering machine.The roller 151 of control valve 15 is circular with the rotary motion trace of rotating part 1, overlaps with the floor projection of curve adjustment rail 5, and roller 151 contacts with curve adjustment rail 5; Rotation along with rotating part 1; Roller 151 is moved up and down by the effect of curve adjustment rail 5, makes crank 152 swings, and valve shaft 153 is rotated; Drive valve plate 154 positions and change, thereby the aperture of control valve 15 is changed.When bellows 12 were turned back to discharging and cloth district, control valve 15 cut out, and when getting into seed region, control valve 15 is opened gradually, and control valve 15 is opened in the down draft sintering zone.
Effective sintering area of this embodiment sintering machine is 300 square metres, and the production capacity of sintering deposit is 3,000,000 tons/year.
Fig. 9, Figure 10 are a kind of sketch mapes that turns round sintering machine embodiment 2 of expression the present invention.In this embodiment, 4 cover transmission devices 44 are set on the frame 41 in round Φ 1 scope, and chain drive-belt is arranged in the rotating part 1 interior circle, and chain drive-belt length is shorter.Annular flue 3 also is arranged in round Φ 1 scope; Be communicated with two water ring sealing devices 2 through flue arm 31; In flue arm 31 and two water ring sealing device 2 junctions ash handling equipment 32 is set, is used for removing the part dust of flue gas, reduce the sedimentation of dust in flue arm 31 annular flues 3.The physical dimension of annular flue 3 is littler.All the other are identical with embodiment 1.
Figure 11, Figure 12 are a kind of sketch mapes that turns round sintering machine embodiment 3 of expression the present invention.In this embodiment, be provided with shutter 125 in the bellows 12, bellows 12 also are provided with the solid granule outlet except that air outlet I, be provided with valve 126 at the solid granule outlet.Annular flue 3 also is arranged in round Φ 1 scope, is communicated with annular seal 2 through flue arm 31, ash handling equipment 32.When this embodiment works; The bulky grain foreign material that drop from comb bed 13 or bellows top receive stopping of shutter 125; Can not get into exhausting systems such as air outlet I and bellows arm 14, the control valve 15 of bellows 12, two water ring sealing devices 2; But fall into the solid granule outlet, when the equipment periodic inspection, discharge through valve 126.All the other are identical with embodiment 1.
The drive unit of enumerating among the embodiment is the sprocket wheel chain drive, and the present invention also can adopt sintering circular-cooler friction gearing commonly used, can obtain same effect.
Beneficial effect:
The technical scheme that the present invention adopted; Solved well that there are shortcomings such as intrinsic air leak rate of air curtain is high, sintering deposit ton ore deposit power consumption is high, investment is big, the chassis effective rate of utilization is low, maintenance cost height in continuous pallettype sintering machine in the prior art; And; Little, the poor product quality of the specification of equipment of the circular sintering machine of prior art is not suitable for shortcomings such as big-and-middle-sized sintering plant.A kind of revolution sintering machine that provides, the unit specification is big, good product quality, the sintering air leak rate of air curtain is low, and sintering deposit ton ore deposit power consumption is low, small investment, maintenance cost are low, is applicable to big-and-middle-sized sintering plant.The effective sintering area of separate unit sintering machine can reach more than 800 square metres, and air leak rate of air curtain can be low to moderate below 1%.
The sintering plant that uses the present invention to build, under equal production scale, the main exhauster air quantity reduces by 40%～60%, and main exhauster power consumption also reduces by 40%～60% on year-on-year basis, and simultaneously, the electric cleaner specification of equipment reduces half the, and efficiency of dust collection improves; Supporting desulfurizer specification of equipment can reduce half the, and sulfide, nitrogen oxide arresting efficiency improve, and sulfide, discharged nitrous oxides reduce; Engineering construction investment also reduces significantly.According to calculating, adopt the sintering machine of 3,000,000 tons of/year sintering deposits of construction scale of the present invention, main exhauster power consumption can reduce by 4,000 ten thousand kW.h/, reduces the electricity charge and pays 2,000 ten thousand yuan/year, reduces CO
2Discharge 4,100 ten thousand tons/year; Reduce 1,000 ten thousand yuan/year of maintenance of equipment expenses; Reduce SO
2Discharge 3000 tons/year, reduce factory construction and invest about 100,000,000 yuan.If the sintering machine of the sintering plant that China is present is pressed planimeter, wherein 10% adopt the present invention to transform, then can reduce 2.4 hundred million yuan/year of power consumptions, reduce CO
2Discharge 4.9 hundred million tons/year; Reduce SO
2Discharge 3.6 ten thousand tons/year, economy, environmental benefit are all very significantly.
Claims (7)
1. revolution sintering machine; Comprise rotating part, sealing device, exhausting flue collector, it is characterized in that: described rotating part (1) is annular, comprises the bellows (12) of a plurality of circular array and the comb bed (13) of annular; Sealing device is the two water ring sealing devices (2) with annular gas passage; Difference each bellows of airtight connection (12) and exhausting flue collector, rotating part (1) are arranged on and support on the transmission device (4), can rotate around the central axis of himself.
2. a kind of revolution sintering machine according to claim 1; It is characterized in that: described rotating part (1) is provided with the annular revolution frame (11) with grid; Bellows (12) are arranged in the grid of annular revolution frame (11) and supported by it; The bed (13) of combing is arranged on the top of whole bellows (12), and annular revolution frame (11) can rotate at the central axis that support transmission device (4) is gone up around himself.
3. a kind of revolution sintering machine according to claim 2 is characterized in that: between the grid of annular revolution frame (11) and bellows (12), be provided with the bellows positioner (18) that is slidingly connected and forms by orthogonal two pairs.
4. a kind of revolution sintering machine according to claim 3; It is characterized in that: bellows positioner (18) is made up of groove locating piece (181), (182), (183), (184) and raised line locating piece (185), (186), (187), (188); Groove locating piece (181), (182), (183), (184) are on four limits of each fan-shaped grid that cross is fixedly installed on annular revolution frame (11); The raised line locating piece (1850, (186), (187), (188) are on four limits that cross is fixedly installed on each bellows; The raised line of raised line locating piece (185), (186), (187), (188) embeds respectively in the groove of groove locating piece (181), (182), (183), (184), is matched in clearance between raised line and the groove.
5. a kind of revolution sintering machine according to claim 2 is characterized in that: bellows (12) bottom is provided with bellows arm (14) and control valve (15), and bellows arm (14), control valve (15) are communicated with bellows (12).
6. a kind of revolution sintering machine according to claim 5; It is characterized in that: support on the transmission device (4) and be set with curve adjustment rail (8); Control valve (15) pattern is a butterfly valve; Comprise valve plate (154), valve shaft (153), crank (152), roller (151), the roller (151) of control valve (15) contacts with curve adjustment rail (8).
7. a kind of revolution sintering machine according to claim 1 is characterized in that: the exhausting flue collector is set to annular flue (3), and a plurality of arms that are communicated with is arranged between two water ring sealing devices (2).
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| CN109868362A (en) * | 2019-04-11 | 2019-06-11 | 中冶长天国际工程有限责任公司 | A kind of circular grate pelletizing machine |
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| CN109868362B (en) * | 2019-04-11 | 2024-02-13 | 中冶长天国际工程有限责任公司 | Ring type roasting machine |
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