CN1772677A - Magnesia calcining boiling furnace rotary kiln method and apparatus - Google Patents
Magnesia calcining boiling furnace rotary kiln method and apparatus Download PDFInfo
- Publication number
- CN1772677A CN1772677A CN 200510108342 CN200510108342A CN1772677A CN 1772677 A CN1772677 A CN 1772677A CN 200510108342 CN200510108342 CN 200510108342 CN 200510108342 A CN200510108342 A CN 200510108342A CN 1772677 A CN1772677 A CN 1772677A
- Authority
- CN
- China
- Prior art keywords
- plate
- rotary kiln
- successively
- kiln
- dust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The present invention relates to magnesia calcining boiling furnace rotary kiln method and apparatus. The magnesia calcining process includes feeding material from the high end of the rotary kiln, producing hot fume in the coal-burning boiling furnace, making the fume flow from the low end of the rotary kiln to the high end for counter flow type heat exchange with material inside the rotary kiln, exhausting fume and dust in the high end of the rotary kiln and recovering useful dust material, producing chamotte in sealed bin via high temperature radiation heating, and tempering the over burnt material. The apparatus consists of boiling furnace system for producing and supplying hot fume, calcining rotary kiln system, material feeding system, dust collecting system, and chamotte conveying, storing, ageing and cooling system. The present invention has the advantages of good coal adaptability, high heat efficiency, low cost, low power consumption, high yield, etc.
Description
Technical field
The present invention relates to the magnesium oxide calcining technology, particularly relate to a kind of magnesia calcining boiling furnace rotary kiln method and equipment.
Background technology
Existing activated magnesia method for calcinating has the directly burning of reverberatory furnace, fluidizing furnace, shower furnace and downflow system rotary kiln etc. several, but heat-supplying mode mostly is coal powder injection, oil spout or jet-propelled, bad adaptability to coal, internal structure is single in addition, yield poorly, energy consumption height or cost height, even can not calcine high quality activated magnesia and heterogeneous oxidation magnesium.
Summary of the invention
The object of the present invention is to provide that a kind of cost is low, energy consumption is low, output is high, good to the adaptability of coal, the magnesia calcining boiling furnace rotary kiln method that burning quality is high the present invention also aims to be provided for implementing the equipment of this method.
For achieving the above object, magnesia calcining boiling furnace rotary kiln method of the present invention be material from rotary kiln high-endly enter, low side discharges, the hot flue gas that coal-fired fluidizing furnace produces from the low side of rotary kiln enter, high-end discharge, material and hot flue gas carry out reverse-flow heat exchange in rotary kiln; The dust of the high-end discharge of rotary kiln, flue gas are sent into transfer roller by the materials dust material that has that dust collection device reclaims, and the flue gas that dust collection device is discharged is discharged through induced draft fan and flue gas emptying chimney; The high temperature chamotte that rotary kiln low side kiln hood is discharged with have materials dust material together to enter a stewing jar storehouse to mix stewingization from dust collection device, make underdone material under the hyperthermia radiation heat effect, change into grog, cross imitation frosted glass carry out temper, after the cooling of the grog of stewingization, send into the work in-process storehouse, send into pulverizer after the work in-process deironing in work in-process storehouse and carry out grinding.Just the material of kiln discharge flows into a stewing jar storehouse and discharges cooling process again after ageing for some time, the stability that helps improving the quality of products.But this technology roasting high-quality activated magnesia, but the also common light magnesium oxide of roasting, and be adapted to the roasting of ores such as various grade magnesite, spathic iron ore, smithsonite, bauxite, Gypsum Mine.To be material advance from rotary oven is high-end the reverse-flow rotary oven roasting of fluidizing furnace activated magnesia novel process, low bringing out, and hot blast advances height from low side and brings out, and is called reverse-flow technology.Hot flue gas body in the rotary oven comes from the elevated temperature heat flue gas that the low side fluidizing furnace provides, this process has produced two big motion streams: one be the rotary oven low side to the hot flue gas flow of high-end mobile, one is that rotary oven is high-end to low side mobile furnace charge stream (as sparring stone, magnesite, smithsonite, bauxite, gypsum etc.).All reactions in the rotary oven all betide the move toward one another of hot flue gas and furnace charge and raise, roll over, lead, stir among the flitch interaction.It comprises heating, evaporation, volatilization and the decomposition of furnace charge; Heat exchange between furnace charge and the hot flue gas or the like is the summation of a series of physical-chemical reaction process.Under the elevated temperature heat flue gas effect of relative movement, calcining matter is separated by different grain size, in rotary kiln, advance in the motion, heating and carry out sufficient heat exchange in advancing, during experienced conduction, convection current, radiation and 4 kinds of heat effects of stewing heat, wherein, conduction heat is the material of kicking up through material delivering plate, the landing of kicking up is at the volley kicked up to land again again and is collided the material curtain that forms repeatedly, and the heat transfer between the solid that produces under heat effect heats for material from outside to inside; Because the reverse-flow technology that adopts makes that just single-phase magnesia crystal has obtained fully effectively transforming.Obtained comparatively ideal quality product.
As optimization, the dust of the high-end discharge of rotary kiln, flue gas reclaim by kiln tail dust collection cover, cyclone and the three grades of dust collection devices of bagroom that link to each other successively materials dust material.
As optimization, enter the high-end material of rotary kiln in advance through following processes: promptly use the jaw crusher fragmentation after reciprocating sieve sieves, again through Hubei Province formula fine crushing crusher machine and Duo Ge material homogenizer storehouse homogenizing.
As optimization, material is calcined through five humidity provinces to low side successively by high-end in rotary kiln, be the 100-200 ℃ of cold zone that A installs the board-like charging guide plate of 45 ° of oblique layouts, cold zone in 200-500 ℃ of the intensive material delivering plate of B mounting end flexure type, warm area in 500-750 ℃ of the sparse material delivering plate of C mounting end flexure type, D is the more sparse material delivering plate of mounting end flexure type successively, horizontal trapezoidal frame blocking material plate, high-temperature zone and E install the 1000-1100 ℃ of high-temperature zone that the vertical type angle steel leads to stir flitch in 750-1000 ℃ of the inverted L shape quarter bend musical form folding flitch that distributes in pairs, and middle cold zone and middle warm area also are equipped with the high temperature resistant ramming bed of material at the base portion of material delivering plate; In high-temperature zone and high-temperature zone at material delivering plate, blocking material plate, folding flitch with lead the base portion that stirs flitch the cotton thermal insulation layer of the high-strength high temperature-resistant ramming bed of material and ceramic fiber also is housed from outside to inside successively.
As optimization, middle cold zone, middle warm area, middle high-temperature zone forward material delivering plate have three kinds: the material delivering plate of a kind of end band 150 degree swash plates, the material delivering plate of second kind of end band 100 degree swash plate, the material delivering plate of the third end band raised type semi arch plate, and three kinds of material delivering plates are in the cycle arrangement successively that makes progress in week.
After adopting technique scheme, the inventive method combustion heat source has adopted fluidizing furnace, and is less demanding to the ature of coal amount, not tight to the water content requirement of coal, but≤the equal after-flame of 30mm coal, rotary kiln adopts reverse-flow calcining, the thermo-efficiency height, adaptability is strong, easy handling.Aging bunker has improved the stability of product.Have that cost is low, energy consumption is low, output is high, good to the adaptability of coal, burning quality height, the advantage that can calcine high quality activated magnesia and heterogeneous oxidation magnesium.
The equipment that is used to implement the inventive method produces supply system, II district rotary kiln calcination system, III district feeder system, IV district dust collecting system and V district grog conveying storage ageing cooling system by the hot flue gas of I district fluidizing furnace and forms, wherein: the hot flue gas of fluidizing furnace produce supply system by link to each other successively by the coal supply crusher, bucket elevator, Pulverized Coal Bin, garden dish feeder, the fluidizing furnace of being furnished with dreg removing system, hot-blast outlet and the chimney that leaks informaton are formed, and wherein the fluidizing furnace bottom is connected with blast cap, isobaric bellows and gas blower in turn; The rotary kiln calcination system is made up of the kiln hood cover of the kiln hood that links to each other with hot-blast outlet, kiln body and lower end band discharge gate successively, the roller circle of supporting rotation is housed in external week of kiln and is fitted with bull gear, pinion(gear) and the rotary electric machine that drives rotation successively; Feeder system is made up of conveyor, feed storehouse, rotary conveyor, bucket elevator, fine crushing machine, vibratory screening apparatus and coarse breaking machine under the tremie pipe that links to each other with the kiln hood cover, hopper, bucket elevator, weighing belt, small feed bin, the storehouse successively; Dust collecting system is equipped with the belt dust-precipitator of dust-precipitator drainage conduit, induced draft fan and flue gas emptying chimney by cyclonic separator, the lower end of the kiln hood cover of lower end band discharge gate, lower end band drainage conduit successively to be formed, kiln hood cover discharge gate, the equipped transfer roller of drainage conduit and dust-precipitator drainage conduit below; Grog is carried and is stored the stewing jar of storehouse that the ageing cooling system is linked to each other with transfer roller by upper end and kiln hood successively, and oblique rotary conveyor, pulverizer, bucket elevator and the wrapping machine of rotary conveyor, equipped electric magnetic iron remover are formed under rotation cooling cylinder, bucket elevator, scraper plate machine, work in-process storehouse, the storehouse.
As optimization, be divided into five humidity provinces by high-end successively to low side in the rotary kiln, be the 100-200 ℃ of cold zone that A installs the board-like charging guide plate of 45 ° of oblique layouts, cold zone in 200-500 ℃ of the intensive material delivering plate of B mounting end flexure type, warm area in the installation of the sparse material delivering plate of C mounting end flexure type gather 500-750 ℃, D installs more sparse material delivering plate successively, horizontal trapezoidal frame blocking material plate, high-temperature zone and E install the 1000-1100 ℃ of high-temperature zone that the vertical type angle steel leads to stir flitch in 750-1000 ℃ of the inverted L shape quarter bend musical form folding flitch that distributes in pairs, and middle cold zone and middle warm area also are equipped with the high temperature resistant ramming bed of material at the base portion of material delivering plate; In high-temperature zone and high-temperature zone at material delivering plate, blocking material plate, folding flitch with lead the base portion that stirs flitch the cotton thermal insulation layer of the high-strength high temperature-resistant ramming bed of material and ceramic fiber also is housed from outside to inside successively.
As optimization, middle cold zone, middle warm area, the anterior material delivering plate in middle high-temperature zone have three kinds: the material delivering plate of a kind of end band 150 degree swash plates, the material delivering plate of second kind of end band 100 degree swash plate, the material delivering plate of the third end band raised type semi arch plate, and three kinds of material delivering plates are in the cycle arrangement successively that makes progress in week.This equipment can adapt to the wagnerite of various grades, the calcining of gypsum, and the different sorts mineral adopt different temperature calcinings to get final product with the grade ore.
As optimization, it is opposite with hot flue gas flow direction that the vertical type angle steel is led the opening direction that stirs flitch, and the opening of horizontal trapezoidal frame blocking material plate is towards the kiln wall.So design, the former helps giving full play to leading and stirs leading of flitch and stir the material effect, and the latter then can avoid the blocking material plate place to be detained material.
After adopting technique scheme, the present device combustion heat source has adopted fluidizing furnace, and is less demanding to the ature of coal amount, and the water content requirement of coal is not tight, but≤the equal after-flame of 30mm coal, rotary kiln adopts reverse-flow calcining, the thermo-efficiency height, adaptability is strong, easy handling.Aging bunker has improved the stability of product.Have that cost is low, energy consumption is low, output is high, good to the adaptability of coal, burning quality height, the advantage that can calcine high quality activated magnesia and heterogeneous oxidation magnesium.
Description of drawings
Fig. 1 is the synoptic diagram of magnesia calcining boiling furnace rotary kiln method adapted equipment of the present invention;
Fig. 2 is a rotary kiln internal structure synoptic diagram of the present invention;
Fig. 3 is the horizontal sectional structure synoptic diagram in the A district of Fig. 2;
Fig. 4 is the horizontal sectional structure synoptic diagram in the B district of Fig. 2;
Fig. 5 is the horizontal sectional structure synoptic diagram in the C district of Fig. 2;
Fig. 6 is the horizontal sectional structure synoptic diagram in the D-1 district of Fig. 2;
Fig. 7 is the horizontal sectional structure synoptic diagram in the D-3 district of Fig. 2;
Fig. 8 is the horizontal sectional structure synoptic diagram in the E district of Fig. 2;
Fig. 9 is the horizontal sectional structure synoptic diagram in D-2 district;
Figure 10 is the structural representation of A district charging guide plate;
Figure 11 is the material delivering plate structural representation of B, C district end band 150 degree swash plates;
Figure 12 is the material delivering plate structural representation of B, C district end band 100 degree swash plates;
Figure 13 is the material delivering plate structural representation of B, end, C district band raised type semi arch plate;
Figure 14 is that the vertical type angle steel is led the structural representation that stirs flitch;
Figure 15 is the material delivering plate structural representation of D-1 district end band 150 degree swash plates;
Figure 16 is the material delivering plate structural representation of D-1 district end band 100 degree swash plates;
Figure 17 is the material delivering plate structural representation of end, D-1 district band raised type semi arch plate.
Embodiment
Magnesia calcining boiling furnace rotary kiln method of the present invention is that raw mineral materialss such as wagnerite, gypsum are used the jaw crusher fragmentation after the reciprocating sieve screening, again through the material of the particle diameter≤30mm of Hubei Province formula fine crushing crusher machine and Duo Ge material homogenizer storehouse homogenizing from rotary kiln high-endly enter, low side discharges, the hot flue gas that coal-fired fluidizing furnace produces from the low side of rotary kiln enter, high-end discharge, material and hot flue gas carry out reverse-flow heat exchange in rotary kiln, during experienced conduction, convection current, radiation and 4 kinds of heat effects of stewing heat; The dust of the high-end discharge of rotary kiln, flue gas are sent into transfer roller by the materials dust material that has that dust collection device reclaims, and the flue gas that dust collection device is discharged is discharged through induced draft fan and flue gas emptying chimney; The high temperature chamotte that rotary kiln low side kiln hood is discharged with have materials dust material together to enter a stewing jar storehouse to mix stewingization from dust collection device, make underdone material under the hyperthermia radiation heat effect, change into grog, cross imitation frosted glass carry out temper, through the grog of stewingization again after the cooling of rotation cooling cylinder, send into the work in-process storehouse, the work in-process in work in-process storehouse are sent into pulverizer again and are carried out grinding after charged deironing device deironing.The dust of the high-end discharge of rotary kiln, flue gas reclaim by kiln tail dust collection cover, cyclone and the three grades of dust collection devices of bagroom that link to each other successively materials dust material.Material is calcined through five humidity provinces to low side successively by high-end in rotary kiln, be the 100-200 ℃ of cold zone that A installs the board-like charging guide plate of 45 ° of oblique layouts, cold zone in 200-500 ℃ of the intensive material delivering plate of B mounting end flexure type, warm area in 500-750 ℃ of the sparse material delivering plate of C mounting end flexure type, D installs more sparse material delivering plate (D-1) successively, horizontal trapezoidal frame blocking material plate (D-2), high-temperature zone and E install the 1000-1100 ℃ of high-temperature zone that the vertical type angle steel leads to stir flitch in 750-1000 ℃ of the inverted L shape quarter bend musical form folding flitch (D-3) that distributes in pairs, and middle cold zone and middle warm area also are equipped with the high temperature resistant ramming bed of material at the base portion of material delivering plate; In high-temperature zone and high-temperature zone at material delivering plate, blocking material plate, folding flitch with lead the base portion that stirs flitch the cotton thermal insulation layer of the high-strength high temperature-resistant ramming bed of material and ceramic fiber also is housed from outside to inside successively.Middle cold zone, middle warm area, middle cold zone forward material delivering plate have three kinds: the material delivering plate of a kind of end band 150 degree swash plates, the material delivering plate of second kind of end band 100 degree swash plate, the material delivering plate of the third end band raised type semi arch plate, and three kinds of material delivering plates are in the cycle arrangement successively that makes progress in week.It is opposite with hot flue gas flow direction that the vertical type angle steel is led the opening direction that stirs flitch, and the opening of horizontal trapezoidal frame blocking material plate is towards the kiln wall.The rotary kiln sense of rotation is identical with material delivering plate end bent direction.
This method is to utilize the fluidizing furnace heat supply, and hot flue gas advances from the kiln tail, and kiln hood goes out, and≤30mm wagnerite material advances from kiln hood (high-end), the reverse-flow technology that kiln tail (low side) goes out.But this technology roasting high-quality activated magnesia, but the also common light magnesium oxide of roasting, and be adapted to the roasting of ores such as various grade magnesite, spathic iron ore, smithsonite, bauxite, Gypsum Mine.System's material advances from rotary oven is high-end, low bringing out, and hot blast advances height from low side and brings out, and is called reverse-flow technology.Hot flue gas body in the rotary oven comes from the elevated temperature heat flue gas that the low side fluidizing furnace provides, this process has produced two big motion streams: one be the rotary oven low side to the hot flue gas flow of high-end mobile, one be rotary oven high-end to low side mobile furnace charge stream (as sparring stone, magnesite, smithsonite, bauxite, gypsum, etc.).All reactions in the rotary oven all betide move toward one another and charging guide plate, material delivering plate, blocking material plate, the folding flitch of hot flue gas and furnace charge and stir among the flitch interaction.It comprises heating, evaporation, volatilization and the decomposition of furnace charge; Heat exchange between furnace charge and the hot flue gas or the like is the summation of a series of physical-chemical reaction process.Under the elevated temperature heat flue gas effect of relative movement, calcining matter is separated by different grain size, in rotary kiln, advance in the motion, heat and carry out sufficient heat exchange in advancing, conduction, convection current, radiation and 4 kinds of heat effects of stewing heat have been experienced during this time, wherein, conduction heat is through charging guide plate, material delivering plate, blocking material plate, folding flitch and stirs the material that flitch is kicked up, the landing of kicking up is at the volley kicked up to land again again and is collided the material curtain that forms repeatedly, heat transfer between the solid that produces under heat effect heats for material from outside to inside; Because the reverse-flow technology that adopts makes that just single-phase magnesia crystal has obtained fully effectively transforming.Obtained comparatively ideal quality product.
The closed production of this process using mechanize, the fine coal heating system from fragmentation, feed, burning, to high-temperature hot-air (hot flue gas) through the rotary oven low side to high-end, then through cyclonic separator, electricity gather dust or the belt dust-precipitator, after induced draft fan emptying or enter the CO2 recovery system.Material enters from the high-end of rotary oven, through low temperature to high temperature after be exported to closed stewing jar storehouse, and then enter the cooling storehouse through tens of hours cooling, behind pulverizer (airflow milling grinding), enter wrapping machine again, material is produced in closed system, and dust, hot cigarette vapour discharge all within the GB claimed range.The production whole process is pollution-free.
Be used to implement the equipment of the inventive method by the hot flue gas generation of I district fluidizing furnace supply system, II district rotary kiln calcination system, III district feeder system, IV district dust collecting system and V district grog are carried and are stored ageing cooling system composition, wherein: be used to provide the hot flue gas of fluidizing furnace of rotary kiln calcining thermal source produce supply system by link to each other successively by coal supply crusher 24-1, bucket elevator 3, Pulverized Coal Bin 23, garden dish feeder 22, the fluidizing furnace 21 of being furnished with dreg removing system 25-3, the hot-blast outlet 25-4 and the chimney 21-1 that leaks informaton form, and wherein fluidizing furnace 21 bottoms are connected with blast cap 25-2 in turn, isobaric bellows 25-1 and gas blower 25; The rotary kiln calcination system that is used for calcination product is made up of the kiln hood cover 14 of the kiln hood 18-1 that links to each other with hot-blast outlet 25-4, kiln body 18 and lower end band discharge gate successively, and kiln body 18 peripheries are equipped with the roller circle 18-2 that supports rotation and are fitted with bull gear 18-4, pinion(gear) 18-4-1 and the rotary electric machine 18-3 that drives rotation successively; Provide to rotary kiln to be crushed to≤feeder system of 30mm raw material is made up of conveyor 6, feed storehouse 5, rotary conveyor 4, bucket elevator 3, fine crushing machine 2, vibratory screening apparatus 1-1 and coarse breaking machine 1 under the tremie pipe 11 that links to each other with kiln hood cover 14, hopper 10, bucket elevator 3, weighing belt 8, small feed bin 7, the storehouse successively; The dust collecting system that is used to regain useful dust material, combustion gas is equipped with the belt dust-precipitator 15 of dust-precipitator drainage conduit 16, induced draft fan 17 and flue gas emptying chimney 19 by cyclonic separator 12, the lower end of the kiln hood cover 14 of lower end band discharge gate, lower end band drainage conduit 13 successively to be formed, and kiln hood cover 14 discharge gates, drainage conduit 13 and dust-precipitator drainage conduit 16 belows are equipped with transfer roller 13-1; Grog is carried and is stored the ageing cooling system successively by upper end and the stewing jar of storehouse 20 that kiln hood 18-1 links to each other with transfer roller 13-1, rotates oblique rotary conveyor 31, pulverizer 33, bucket elevator 3 and the wrapping machine 35 of rotary conveyor 30 under cooling cylinder 26, bucket elevator 3, scraper plate machine 28, work in-process storehouse 29, the storehouse, equipped electric magnetic iron remover 32 and forms.Grog carry to store the ageing system and is mainly used in and stores the underdone powder that gathers dust that the kiln effusive high temperature chamotte of hood 18-1 and transfer roller 13-1 transport and mix stewingization processing, and make not grog changes into grog under high temperature material photothermy.Here transfer roller is preferably scraped buried plate formula transfer roller, the preferred power mill of pulverizer.
Be divided into five humidity provinces by high-end successively to low side in the rotary kiln, be the 100-200 ℃ of cold zone that A installs the board-like charging guide plate of 45 ° of oblique layouts, cold zone in 200-500 ℃ of the intensive material delivering plate of B mounting end flexure type, C mounting end flexure type is dredged warm area in 500-750 ℃ that the installation of material delivering plate gathers, D installs more sparse material delivering plate (D-1) successively, horizontal trapezoidal frame blocking material plate (D-2), high-temperature zone and E install the 1000-1100 ℃ of high-temperature zone that the vertical type angle steel leads to stir flitch in 750-1000 ℃ of the inverted L shape quarter bend musical form folding flitch (D-3) that distributes in pairs, and middle cold zone and middle warm area also are equipped with the high temperature resistant ramming bed of material at the base portion of material delivering plate; In high-temperature zone and high-temperature zone at material delivering plate, blocking material plate, folding flitch with lead the base portion that stirs flitch the high-strength high temperature-resistant ramming bed of material and ceramic fiber thermal insulation layer also are housed from outside to inside successively.The high-strength high temperature-resistant ramming bed of material is that stone is come at high alumina ramming mass or the end of refractory cements agglutinating particle diameter 50mm, and the forming method of the ramming bed of material is cast, and high alumina ramming mass and Mo Lai stone all are trade(brand)name, can buy on market.It is opposite with hot flue gas flow direction that the vertical type angle steel is led the opening direction that stirs flitch, and the opening of horizontal trapezoidal frame blocking material plate is towards the kiln wall.The rotary kiln sense of rotation is identical with material delivering plate end bent direction, i.e. during rotary kiln rotation, material delivering plate can play the material pocket and material be raised downwards when rotating to the top again and spread.
In cold zone, middle warm area, middle cold zone forward material delivering plate have three kinds: the material delivering plate of a kind of end band 150 degree swash plates, the material delivering plate of second kind of end band 100 degree swash plate, the material delivering plate of the third end band raised type semi arch plate, and three kinds of material delivering plates week upwards by cycle arrangement successively.
Wherein: the A district is a cold zone, and the material that A district charging guide plate is mainly used in kiln hood cover tremie pipe imports the B district rapidly, the main material-flying area in B district, this district forms intensive material-flying area by material delivering plate, material forms a large amount of material curtains in this district, also is corresponding middle cold zone, and material is heated rapidly; The C district is middle warm area, and this district is made up of material delivering plate for dredging the material delivering plate range of distribution; The material delivering plate in B, C district adopts the 45# steel to make.The D district is middle high-temperature zone, and material delivering plate, blocking material plate, folding flitch material adopt high temperature steel to make; The E district is the high-temperature zone, and it is No. 6 that the leading of employing stirred flitch, has both worked the material effect of stirring, and plays the guide effect again, also works the effect of heating simultaneously, and the high-temperature zone material is evenly decomposed rapidly.Flow into stewingization jar (stewing jar storehouse) through discharge port then, a stewing jar storehouse is a tapered container that is added with the thermal insulation layer wall, establishes two covers altogether, the cycle operation of feeding respectively.The single stewing jar of storehouse stewingization time is more than 10 hours.The not grog that hood and dust-precipitator can be collected adds wherein, the waste heat behind the fresh baked stewing turn into under slaking decompose, saved the energy, improved quality product.The stirrer gear in each district all is to be fixed on by screw to be welded in the kiln wall on the ear seat on week.The retaining screw of the stirrer gear in D and E district and ear seat all are imbedded under the ramming bed of material.Here charging guide plate, material delivering plate, blocking material plate, folding flitch and lead and stir flitch and be referred to as stirrer gear.
Claims (10)
1, a kind of magnesia calcining boiling furnace rotary kiln method, it is characterized in that material from rotary kiln high-endly enter, low side discharges, the hot flue gas that coal-fired fluidizing furnace produces from the low side of rotary kiln enter, high-end discharge, material and hot flue gas carry out reverse-flow heat exchange in rotary kiln; The dust of the high-end discharge of rotary kiln, flue gas are sent into transfer roller by the materials dust material that has that dust collection device reclaims, and the flue gas that dust collection device is discharged is discharged through induced draft fan and flue gas emptying chimney; The high temperature chamotte that rotary kiln low side kiln hood is discharged with have materials dust material together to enter a stewing jar storehouse to mix stewingization from dust collection device, make underdone material under the hyperthermia radiation heat effect, change into grog, cross imitation frosted glass carry out temper, after the cooling of the grog of stewingization, send into the work in-process storehouse, send into pulverizer after the work in-process deironing in work in-process storehouse and carry out grinding.
2,, it is characterized in that the dust of the high-end discharge of rotary kiln, flue gas have materials dust material by kiln tail dust collection cover, cyclone and the three grades of dust collection devices recovery of bagroom that link to each other successively according to the described method of claim 1.
3,, it is characterized in that entering the high-end material of rotary kiln in advance through following processes: promptly use the jaw crusher fragmentation after reciprocating sieve sieves, again through Hubei Province formula fine crushing crusher machine and Duo Ge material homogenizer storehouse homogenizing according to the described method of claim 2.
4, according to claim 1,2 or 3 described methods, it is characterized in that material calcined through five humidity provinces to low side successively by high-end in rotary kiln, be the 100-200 ℃ of cold zone that A installs the board-like charging guide plate of 45 ° of oblique layouts, cold zone in 200-500 ℃ of the intensive material delivering plate of B mounting end flexure type, warm area in 500-750 ℃ of the sparse material delivering plate of C mounting end flexure type, D is the more sparse material delivering plate of mounting end flexure type successively, horizontal trapezoidal frame blocking material plate, high-temperature zone and E install the 1000-1100 ℃ of high-temperature zone that the vertical type angle steel leads to stir flitch in 750-1000 ℃ of the inverted L shape quarter bend musical form folding flitch that distributes in pairs, and middle cold zone and middle warm area also are equipped with the high temperature resistant ramming bed of material at the base portion of material delivering plate; In high-temperature zone and high-temperature zone at material delivering plate, blocking material plate, folding flitch with lead the base portion that stirs flitch the cotton thermal insulation layer of the high-strength high temperature-resistant ramming bed of material and ceramic fiber also is housed from outside to inside successively.
5, according to the described method of claim 4, it is characterized in that middle cold zone, middle warm area, middle high-temperature zone forward material delivering plate have three kinds: the material delivering plate of a kind of end band 150 degree swash plates, the material delivering plate of second kind of end band 100 degree swash plate, the material delivering plate of the third end band raised type semi arch plate, and three kinds of material delivering plates are in the cycle arrangement successively that makes progress in week.
6, be used to implement the equipment of the described method of claim 1, it is characterized in that producing supply system by the hot flue gas of I district fluidizing furnace, II district rotary kiln calcination system, III district feeder system, IV district dust collecting system and V district grog are carried and are stored ageing cooling system composition, wherein: the hot flue gas of fluidizing furnace produce supply system by link to each other successively by coal supply crusher (24-1), bucket elevator (3), Pulverized Coal Bin (23), garden dish feeder (22), the fluidizing furnace (21) of being furnished with dreg removing system (25-3), hot-blast outlet (25-4) and the chimney that leaks informaton (21-1) are formed, and wherein fluidizing furnace (21) bottom is connected with blast cap (25-2) in turn, isobaric bellows (25-1) and gas blower (25); The rotary kiln calcination system is made up of the kiln hood cover (14) of the kiln hood (18-1) that links to each other with hot-blast outlet (25-4), kiln body (18) and lower end band discharge gate successively, and kiln body (18) periphery is equipped with the roller circle (18-2) of supporting rotation and is fitted with bull gear (18-4), pinion(gear) (18-4-1) and the rotary electric machine (18-3) that drives rotation successively; Feeder system is made up of conveyor (6), feed storehouse (5), rotary conveyor (4), bucket elevator (3), fine crushing machine (2), vibratory screening apparatus (1-1) and coarse breaking machine (1) under the tremie pipe (11) that links to each other with kiln hood cover (14), hopper (10), bucket elevator (3), weighing belt (8), small feed bin (7), the storehouse successively; Dust collecting system is made up of belt dust-precipitator (15), induced draft fan (17) and flue gas emptying chimney (19) that dust-precipitator drainage conduit (16) is equipped with in kiln hood cover (14), the cyclonic separator (12) of lower end band drainage conduit (13), the lower end of lower end band discharge gate successively, kiln hood cover (14) discharge gate, the equipped transfer roller (13-1) of drainage conduit (13) and dust-precipitator drainage conduit (16) below; Grog is carried and is stored the stewing jar of storehouse (20) that the ageing cooling system is linked to each other with transfer roller (13-1) by upper end and kiln hood (18-1) successively, and oblique rotary conveyor (31), pulverizer (33), bucket elevator (3) and the wrapping machine (35) of rotary conveyor (30), equipped electric magnetic iron remover (32) are formed under rotation cooling cylinder (26), bucket elevator (3), scraper plate machine (28), work in-process storehouse (29), the storehouse.
7, according to the described equipment of claim 6, it is characterized in that being divided into five humidity provinces by high-end successively to low side in the rotary kiln, be the 100-200 ℃ of cold zone that A installs the board-like charging guide plate of 45 ° of oblique layouts, cold zone in 200-500 ℃ of the intensive material delivering plate of B mounting end flexure type, warm area in the installation of the sparse material delivering plate of C mounting end flexure type gather 500-750 ℃, D installs more sparse material delivering plate successively, horizontal trapezoidal frame blocking material plate, high-temperature zone and E install the 1000-1100 ℃ of high-temperature zone that the vertical type angle steel leads to stir flitch in 750-1000 ℃ of the inverted L shape quarter bend musical form folding flitch that distributes in pairs, and middle cold zone and middle warm area also are equipped with the high temperature resistant ramming bed of material at the base portion of material delivering plate; In high-temperature zone and high-temperature zone at material delivering plate, blocking material plate, folding flitch with lead the base portion that stirs flitch the cotton thermal insulation layer of the high-strength high temperature-resistant ramming bed of material and ceramic fiber also is housed from outside to inside successively.
8, according to the described equipment of claim 7, it is characterized in that middle cold zone, middle warm area, the anterior material delivering plate in middle high-temperature zone have three kinds: the material delivering plate of a kind of end band 150 degree swash plates, the material delivering plate of second kind of end band 100 degree swash plate, the material delivering plate of the third end band raised type semi arch plate, and three kinds of material delivering plates are in the cycle arrangement successively that makes progress in week.
9, according to the described equipment of claim 7, the opening that it is characterized in that horizontal trapezoidal frame blocking material plate is towards the kiln wall.
10, according to the described equipment of claim 7, it is opposite with hot flue gas flow direction to it is characterized in that the vertical type angle steel is led the opening direction that stirs flitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510108342 CN1772677A (en) | 2005-10-12 | 2005-10-12 | Magnesia calcining boiling furnace rotary kiln method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510108342 CN1772677A (en) | 2005-10-12 | 2005-10-12 | Magnesia calcining boiling furnace rotary kiln method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1772677A true CN1772677A (en) | 2006-05-17 |
Family
ID=36759840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510108342 Pending CN1772677A (en) | 2005-10-12 | 2005-10-12 | Magnesia calcining boiling furnace rotary kiln method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1772677A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306924B (en) * | 2007-05-15 | 2010-07-07 | 海城华宇耐火材料有限公司 | Method and apparatus for light-burning magnesium powder for rotary kiln |
| CN101659522B (en) * | 2009-08-06 | 2011-11-30 | 新兴河北工程技术有限公司 | Calcined dolomite production machine |
| CN102537986A (en) * | 2012-02-27 | 2012-07-04 | 山西省环境科学研究院 | Rotary kiln equipment used for contaminated soil restoration operation |
| CN102927798A (en) * | 2012-10-25 | 2013-02-13 | 霍林郭勒效高褐煤提质有限公司 | Heat exchange device for lignite drying and upgrading and upgrading method |
| CN104315521A (en) * | 2014-10-14 | 2015-01-28 | 史惠元 | Horizontal rotary gasification furnace with wheel encircling grate |
| CN105174306A (en) * | 2015-11-03 | 2015-12-23 | 苏州市金翔钛设备有限公司 | Titanium white calcination rotary kiln |
| CN105731838A (en) * | 2016-04-26 | 2016-07-06 | 沈阳鑫博工业技术股份有限公司 | Calcination device and method for preparing light calcined magnesia through magnesite ore |
| CN106431021A (en) * | 2016-08-31 | 2017-02-22 | 武汉三源特种建材有限责任公司 | Preparation method for magnesium oxide for concrete |
| CN110065962A (en) * | 2019-04-16 | 2019-07-30 | 北京北科环境工程有限公司 | A kind of energy-efficient oxidative system of the useless ash of desulfurization and method |
| KR102258330B1 (en) * | 2020-08-31 | 2021-05-31 | 한정근 | Firing furnace combining rotary kilan furnace and fluidized bed furnace |
| KR102270492B1 (en) * | 2020-08-31 | 2021-06-29 | 한정근 | Sand production device for mortar using a sintering furnace combined with a rotary kiln furnace and a fluidized bed furnace |
| CN114605092A (en) * | 2022-04-25 | 2022-06-10 | 白银新银鑫工贸有限公司 | Low-carbon energy-saving manufacturing process of calcium oxide and calcium oxide product |
-
2005
- 2005-10-12 CN CN 200510108342 patent/CN1772677A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306924B (en) * | 2007-05-15 | 2010-07-07 | 海城华宇耐火材料有限公司 | Method and apparatus for light-burning magnesium powder for rotary kiln |
| CN101659522B (en) * | 2009-08-06 | 2011-11-30 | 新兴河北工程技术有限公司 | Calcined dolomite production machine |
| CN102537986A (en) * | 2012-02-27 | 2012-07-04 | 山西省环境科学研究院 | Rotary kiln equipment used for contaminated soil restoration operation |
| CN102927798A (en) * | 2012-10-25 | 2013-02-13 | 霍林郭勒效高褐煤提质有限公司 | Heat exchange device for lignite drying and upgrading and upgrading method |
| CN102927798B (en) * | 2012-10-25 | 2015-03-18 | 浙江传媒学院 | Lignite drying and upgrading method |
| CN104315521A (en) * | 2014-10-14 | 2015-01-28 | 史惠元 | Horizontal rotary gasification furnace with wheel encircling grate |
| CN105174306A (en) * | 2015-11-03 | 2015-12-23 | 苏州市金翔钛设备有限公司 | Titanium white calcination rotary kiln |
| CN105731838A (en) * | 2016-04-26 | 2016-07-06 | 沈阳鑫博工业技术股份有限公司 | Calcination device and method for preparing light calcined magnesia through magnesite ore |
| CN106431021A (en) * | 2016-08-31 | 2017-02-22 | 武汉三源特种建材有限责任公司 | Preparation method for magnesium oxide for concrete |
| CN106431021B (en) * | 2016-08-31 | 2019-07-19 | 武汉三源特种建材有限责任公司 | The preparation method of concrete magnesia |
| CN110065962A (en) * | 2019-04-16 | 2019-07-30 | 北京北科环境工程有限公司 | A kind of energy-efficient oxidative system of the useless ash of desulfurization and method |
| KR102258330B1 (en) * | 2020-08-31 | 2021-05-31 | 한정근 | Firing furnace combining rotary kilan furnace and fluidized bed furnace |
| KR102270492B1 (en) * | 2020-08-31 | 2021-06-29 | 한정근 | Sand production device for mortar using a sintering furnace combined with a rotary kiln furnace and a fluidized bed furnace |
| CN114605092A (en) * | 2022-04-25 | 2022-06-10 | 白银新银鑫工贸有限公司 | Low-carbon energy-saving manufacturing process of calcium oxide and calcium oxide product |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1772677A (en) | Magnesia calcining boiling furnace rotary kiln method and apparatus | |
| CN102372450B (en) | Powdered lime calcining technology and system | |
| CN109455958B (en) | Preparation method of fine calcium oxide | |
| CN107619208A (en) | A kind of production system and its implementation that plaster of Paris is produced with desulfurated plaster | |
| CN101063059A (en) | Moving iris type fluidized bed | |
| CN101825390A (en) | Double-layered vibrating fluidized-bed drying-classification apparatus | |
| CN1966443A (en) | Cement chamotte production method of calcium carbide 100% substituting for natural calcic material and decomposed out of kiln | |
| CN109261303A (en) | A kind of coal ash for manufacturing is for autoclaved fly ash brick integrated apparatus | |
| CN114621015A (en) | Dry production method and equipment of powder for rock plate press forming | |
| CN101762147B (en) | Clay mineral drier | |
| CN209544516U (en) | A kind of full automatic production equipment of anode material for lithium-ion batteries | |
| CN1262676C (en) | Facilities for reducing metal oxide, method for operating the facilities and moldings as raw material to be charged to reduction furnace | |
| CN113769871A (en) | Active lime calcining system | |
| CN1640816A (en) | Method for preparing quality beta-type spodumene | |
| CN101306924A (en) | Method and apparatus for light-burning magnesium powder for rotary kiln | |
| CN206701397U (en) | A kind of wind sweeps coal mill apparatus | |
| CN115849736A (en) | Device for preparing active calcium oxide calcium carbide raw material from calcium carbide slag | |
| CN201653072U (en) | Double-layer vibration fluidized bed drying classified device | |
| CN101037305A (en) | Cocurrent-counter current rotary kiln calcining technique process | |
| CN115231785B (en) | Device and method for recycling ferric oxide by utilizing red mud carbon fixation and dealkalization | |
| CN217556025U (en) | Device for recovering iron oxide by utilizing red mud carbon fixation and dealkalization | |
| CN101168477A (en) | Comprehensive utilization technique and system for soft-burned dolomite fines | |
| CN1239719C (en) | Circulating fluidized bed mineral reducing roasting device and reducing roasting method | |
| CN1214279A (en) | Treating equipment for reusing domestic refuse | |
| CN207108913U (en) | A kind of lightweight oil-shale grading dry distillation equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Quanxiang Document name: Notification of registration procedures and notice of patent for invention |
|
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |