Rotary kiln is the equipment of very crucial a machine in project building, its actor or actress bad endangers the forge refine character that builds raw material to the project instantly. Firebrick is the crucial equipment in rotary kiln, its have very crucial maintenance in the forging of raw material effect. This article is for the rotary kiln of Φ4 M×60 M with norms model exemple begin scientific research, introduced in detail among them the equipment of firebrick the standard of state and wall of its build by laying bricks or stones, and to carbonadoing kiln is mixed these 2 crucial flow began the skin that hang kiln to study scientificly.
1, the equipment of the firebrick inside rotary kiln state
The rotary kiln that introduces this in detail is fireproof of insulation material choose go up applied is norms model be (81×90×150×200) the magnesium of Mm is chromic brick, (81×90×200×200) the adiabatic heat preservation of Mm is pointed spar brick, (81×90×200×200) the clay brick of Mm, (81×90×200×200) the silicon of Mm not brick. This kind of brick often has must anti-flammability, and be in the application of rotary kiln have different use severally:
1.1 magnesian chromic bricks
Normally Bao Hou should exceed magnesian chromic brick 110 Mm just calculates pass mark, those who be less than value of this one mark is to must be torn open completely change. Regular meeting is connected to choose way of wall of large board build by laying bricks or stones to begin wall of build by laying bricks or stones in the whole process of wall of build by laying bricks or stones, can avoid rotary kiln to fall in chromic brick of the magnesium in using whole process in that way come out, endanger the application of rotary kiln.
Brick of pointed spar of 1.2 adiabatic heat preservation
Brick of pointed spar of adiabatic heat preservation is fireproof performance is relatively good, producing relatively big effect adequately in rotary kiln. But its have the department of cornerstone of defect that is to say of a mortality compressive strength is low, should ensure when using whole process metropolis 130 Mm controls the Baohou of brick of pointed spar of adiabatic heat preservation consequently, can ensure everything of rotary kiln applies normally in that way. Brick of pointed spar of adiabatic heat preservation is to choose magic art of wall of clean build by laying bricks or stones normally in the wall of build by laying bricks or stones in the past, but be in the application of long-term sex,the defect of brick of pointed spar of adiabatic heat preservation is come out by complete exposed to the open air, the way of wall of build by laying bricks or stones of experimental disclosure fireclay with all previous very much classics is aimed at the application of brick of pointed spar of adiabatic heat preservation to have quite great active sense, the application of brick of pointed spar of adiabatic heat preservation after using formula of this one party can exceed 6 12 months between most .
1.3 clay brick
Argillaceous brick is this kind of relatively basic adiabatic brick, the means that uses surface layer to add makings skin in applied moment will promote its to prevent the practical effect that grinds adiabatic heat preservation, normally brick of the clay below the circumstance is in exceed 50 Mm to control can eligible, what be less than value of this one mark in using whole process consequently is completely must tear open instantly change.
1.4 silicon not brick
Silicon not adiabatic heat preservation of the brick is actual the effect very good, but the characteristic of its material makes its colour and lustre very light fragile, preexistence tastes meeting burst when kiln application, must tear open then change, long-term sex can cause tremendous harm in the past, consequently the experiment in long-term sex detects in whole process, its apply in kiln end practical effect is very good, operating period a lot of a lot of promotion.
1.5 cyanite bricks
The advantage of this one brick a lot of, suit the regulation of rotary kiln, bricky compressive strength is high, and attrition resistance of the surface is great, promoted viscosity when application in that way, applied fortune begins wall of build by laying bricks or stones with way of wall of clean build by laying bricks or stones, operating period is opposite and character is relatively long.
2, the wall of build by laying bricks or stones of firebrick is normative
(1) maintain the cleanness inside kiln. Be absent that moment of the quality that considers firebrick, the agglutinate level among firebrick and kiln body is decision-making the operating period of firebrick, be sure to ensure when the wall of build by laying bricks or stones that begins firebrick consequently the cleanness inside kiln, cannot be in in order to have the leech on to of little grain content of certain Yi Song kiln body, can ensure in that way the lay a finger on of the near future span of firebrick and kiln body and agglutinate.
(2) ichnography of wall of standard build by laying bricks or stones. Kiln body the first time wall of build by laying bricks or stones very crucial, after its are decision-making the repair state of firebrick, because this must want apply sruveyor's level to develop a standard to the place of every 1 firebrick in the whole process of wall of build by laying bricks or stones, can ensure reasonably to the most normative state comes to according to when wall of its build by laying bricks or stones in that way.
(3) gap did not leave when wall of build by laying bricks or stones. Except chromium opening magnesium the brick has quite big splash to go up besides, other firebrick should ensure when wall of build by laying bricks or stones the clearance among brick and brick can not exceed 1.5 Mm, want the firebrick of wall of build by laying bricks or stones of same position together, can not place casually. Be in together secure the brush hammer with rubber fact when be not being moved, in order to avoid the state that in rotary kiln application the generation in whole process falls down.
3, carbonado kiln regulations system
That is to say that should do after the whole process of wall of build by laying bricks or stones of firebrick undertakes is begun carbonado kiln, carbonado kiln is very important one , want the regulations system with following comply with without fail.
2 forms for reporting statistics side as above can master, when must tear open changed kiln brick to be controlled in 20 M, bake making is best raising lukewarm rate is 20 ℃ and every hour rising to rise 30 in every hour is best among ℃ yes, and when under 20 M when rate summary is small fast certain, exceed every hour 40 ℃ or be it is ℃ of every hour 50 can, but minimum is gotten when the individual situation of chromic to magnesium brick,the value is begun carry lukewarm.
Comply with wants when rotary kiln carries lukewarm whole process a lot of standard: The level that does not break eventually, rotary kiln is carbonadoing kiln can be not broken eventually in the process completely, if be broken eventually,begin from the beginning without fail, carrying lukewarm when even if is gradually carry lukewarm ensure carbonado the practical effect of kiln is not OK also carry agog lukewarm and make accident of safety of the generation inside kiln, contend for begin carry lukewarm; spends dependability standard, carbonadoing kiln moment chooses oil to carry gentle coal normally lukewarm 2 kinds, return meeting both mix up sometimes, but no matter be that kind of ,be spent,often have must distinction, carry Wen Ye to be able to have must distinction, carbonadoing consequently in kiln whole process if want to tear open,change carry lukewarm raw material be sure to advertent is spent have an error, operate raise lukewarm rate, avoid firebrick falls down or can carbonadoing kiln goes out in the process completely is cracked state.
4, the application of kiln skin
The application in rotary kiln is kiln skin in whole process have very main effect. Hung up kiln skin can increase the operating period of firebrick, can promote the moving rate of rotary kiln together. By broken bits of dolomite, slate, hydrochloric acid material of 3 Central Plains makes kiln skin, want to choose the condiment that studies scientificly when the real operation of the skin that hang kiln, will be being occupied is better than calculating, also want to pursue normative real operation together, can hung up in that way the kiln skin that accords with a regulation, raise work efficiency to make for rotary kiln ensure.
The real operation of the skin that hang kiln very important, the foundation is theoretic be to press in that way flow to begin completely normally:
(1) the dolomite powder state that before hanging kiln, needs to hold full amount first, and wanting a lot of more deposit coal, and the consistency that also should check software of the system that feed coal, etc any just can begin to carry after be all set lukewarm, the that waits for room of smoke of your kiln end is spent more than 800 centigrade hind the raw material that can add full amount again, the quantity here is according to unit process of cargo bandling and decide.
(2) want after the Pi Gang that hang kiln begins advertent the first time of the skin that hang kiln the first time on makings quantity wants to operate, it is to operate completely below the circumstance normally the 60% fluctuation in output, want well-balanced kiln fast and on of makings quantity occupy than. Cast the of makings again to cause one layer upon layer pit Pi Hougang begins, cast again expecting is a ceaseless whole process, should operating add of the heat addition inside kiln together must raw material, wait for the makings quantity inside your kiln and to spend subsequently cause must occupy when comparing can maintain for a long time, should make the makings quantity inside kiln maintain from beginning to end in other words when 120 T/h can the 48 H in job of long-term retentive circumstance, already crossed 48 H to be sure to drop makings setting rate again, want to be able to exceed 150 T/h. The raw material of ceaseless 150 T/h is measured, the 72 H in job of again rotatory kiln, hang kiln skin in that way even if undertook basically.
(3) what hanging kiln skin is inchoate, gush coal canal is the place in the 30 M outside kiln mouth completely from beginning to end, its azimuth gets close to a little the place of raw material, those who choose is relatively short flame is begun burn go to. Be in in that moment of later period, the raw material quantity inside rotary kiln promotes in what last, the actual jockey that consequently gush coal is in charge of makes the promotion that pressure lasts even, consequently its place wants to kiln inside in mobile, cooperate raw material each other in that way measure and the kiln skin of cipher out can be had must accident and Bao Hou, ensure the qualification of its character. Be in in later period, that is to say the makings quantity inside rotary kiln and output exceed relativity to occupy than balanced when, gush coal is in charge of the shift in be being met to begin real operation to all normal place.
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