Ball of fireproof ball, accumulation of heat, manufacturer home recommends flourish Cheng Naicai, offer custom-built, trade price, the welcome seeks advice.
The fireproof ball that fireproof ball heat is versed in area of high temperature of upside of bed of characteristic and comparative ball is used should have better reason to change character not only, and exchange form as heat for, need has good hot project character, heat up industry procedure at cycle of aggrandizement ball bed with benefit. . Pledge with fast aluminous qualitative fireproof ball and silicon fireproof ball bearing is compared, the coefficient of thermal conductivity of qualitative fireproof ball, thermal capacity, coefficient of temperature conductivity all has magnalium bigger rise, character of its heat physics is more advantageous. By the watch 2 can see, pledge with fast aluminous qualitative fireproof ball and silicon fireproof ball bearing is compared, magnalium pledges fireproof ball material pledges density is bigger, make quality of unit ball bed increases, coefficient of ball bed quality also increases subsequently. Only ball diameter and space spend other index have ginseng change relation. To waiting for the layer of fireproof ball bed with even diameter, its space is spent is a constant. After deciding when ball diameter, other parameter all is calm value, with material qualitative condition has nothing to do.
Produce the method with fireproof commonly used ball and craft introduction at present
Machine pressing shapes the law is current much shaping is used in fireproof ball production method. This method uses the machine that control a ball and steel mould to will make up suppress of fireproof ball raw material to become sphere. Because general aircraft is pressed,shape to all show water content is 4% ～ the half drier of 9% shapes method, also weigh half dry process consequently. The equipment with this commonly used law has attrition to press bricky machine, lever to press bricky machine and hydraulic press to wait.
Machine pressing shapes the process is one makes the grain inside ball makings is mixed thick and fast essentially the air eduction, process that fashions compact sphere. The fireproof ball that machine pressing shapes has density big, dry systole mixes tall, strength firing and contractive dimension of small, fireproof ball is easy the advantage such as control, so this law takes main place in fireproof ball production. When machine pressing shapes, be obtain compact sphere, must give ball makings enough pressure. The size of this pressure should overcome a ball quite between feed grain inside attrition force, overcome the external friction force between ball feed grain and modular wall, because the ball expects moisture, grain reachs his to be inside the mould,overcome fill is inhomogenous and the pressure that create distributings inhomogenous sex.
This 3 person the scale relation between depends on what the ball expects is dispersive degree, the dimension of moisture of makings of grain composition, ball, sphere and appearance. Although pressure and sphere are compact,the concern that turn has a certain number of academic formula to be able to offer calculation, if sphere stoma follows pressure to didymous number concerns and change,wait, but the unit area pressure that decides with experiment method sphere place needs approximately normally, control the total pressure with bricky due machine according to this decision.
Outside the fluctuant limits that machine pressing shapes to ask to what the ball expects it is due and certain to remove moisture, to its granularity also has particular demand, if due and reasonable bead grading is compared, accumulation density as far as possible big. General and critical granuality is 3 ～ 5mm, be less than 0. The fine pink content of 088mm should be inside 45% limits of 35% ～ . The blemish that the fireproof ball that machine pressing shapes appears the most easily is the layer is cracked with layer density phenomenon. The layer is cracked is what form in pressurization process is perpendicular the layer shape at pressurization direction is interstitial. Excessive of exorbitant, fine pink, bond crosses ball makings moisture to reach pressure less the generation that exorbitant metropolis brings about a layer to crack.
Accordingly, aborning must try to control to the parameter of this a few respects. The inversion of direction of density edge pressurization of bolide is able to bear or endure after layer density phenomenon shapes namely. By upper part the fireproof ball of one-way pressurization is to go up to fall closely commonly scanty, it is medium on same horizontal close outside scanty. Because the ball expects the attrition force between grain and ball expect the pressure that creates with the attrition force between modular wall is degressive,this is be caused by. Use double-faced pressurization and the method that in the mould 4 walls besmear lube reduces external friction force, can reduce this kind of phenomenon and reduce the porosity of sphere.
Choose shape equipment wants the quality requirement according to fireproof ball, dimension and manufacturing amount to wait have integrated consideration. General heating furnace uses fireproof ball or figure simple, amount the products with general requirement of much, quality, can choose the lever with manufacturing taller efficiency to control ball machine; Quality asks faster fireproof ball can use nominal pressure not to control ball machine under the attrition of 2000K•N.
Ball bed installs ball type hot-blast stove ball bed loads the hot-blast stove of affirmatory ball type of fireproof ball quantity and ball bed dimension how many of fireproof ball, affect the working result of hot-blast stove directly. Because 1 M3 is fireproof,the hot exchange area of the ball wants to heat than be the same as bulk checker brick the area is gotten greatly much, bolide is able to bear or endure inside ball bed namely heat the area is enough. Accordingly, the quantity is loaded in what consider fireproof ball when, basically not be a consideration of fireproof ball heat area and the weight that those who emphasize a consideration is fireproof ball, the fireproof ball quantity that assures to load ball bed namely should have power of enough lay aside heat energy. Hot-blast stove of type of a ball installs a ball how to much measure, should the basis enters furnace wind force, wind lukewarm reach time sending wind to wait undertake heating up is versed in computational. But producing actual in, do not make the complex calculation that heat up labour commonly, the outfit ball that decides hot-blast stove of type of a ball truly according to experience however is measured. Carry out a proof, such doing also is reliable.
In production, when wind Wen Wei 1050 ～ when 1100 ℃ , the general assembly ball of hot-blast stove of 3 balls type is measured, can press 1 M3 blast furnace commonly effective cubage loads fireproof ball quantity on average to be M3 of ／ of 1.8 ～ 2.0 T plan, perhaps load fireproof ball quantity on average to be ／ of 0.75 ～ 1.0 T by blast of minutely 1 M3 (M3 · Min) plan, after computation gives the general assembly ball of hot-blast stove of 3 balls type to measure, the outfit ball that decides hot-blast stove of type of a ball truly then is measured. When be like a blast furnace to configure hot-blast stove of two balls type only, quantity of ball of its general assembly can decrease appropriately, and the quantity holding a ball of hot-blast stove of every ball type can increase appropriately. The ball bed dimension of ball type hot-blast stove is the height of the diameter of bed pointing to a ball and ball bed. When the dimension of affirmatory ball bed, what basically consider is the hot exchange that is helpful for ball bed and the obstruction loss that reduce air current. Ball bed diameter is big, height is low, air current rate is minor, although be helpful for reducing damage of air current block, but go against hot exchange, conversely, damage of air current block is big. Accordingly, when ball bed is designed, diameter and height need integrated consideration, both give attention to two or morethings. Diameter of affirmatory ball bed can press blast furnace blast to be 1.2 ～ 2.0 Rn through speed of ball layer air current commonly ／ S computation, or it is computation of ／ S of 0.45 ～ 0.74 M through empty furnace velocity of flow by blast. The quantitative calculation that uses fireproof ball according to hot-blast stove of type of a ball again next gives the height of ball bed. Manufacturing practice makes clear, no matter the size of ball type hot-blast stove, the height of ball bed appropriate control is in 5, the limits of 6 M, think such height is amiable to conducting heat flow resistance caustic is more appropriate. Additional, in producing a course, because ball bed heats periodicly, fireproof ball happens expand, ball bed is elevatory, make vault space decreases, influence air current distributings and gas combustion effect. Accordingly, when considering ball bed height, ought to consider to take the place that bilges on football bed. The ball type hot-blast stove in the past, the capable person that paragraph of fireproof ball lays on ball bed pledges with the diameter homogeneous phase is the same as, such both neither get used to temperature to distributing, incommensurate also heat exchanges the rule. Current, to loading the fireproof ball instead of ball bed: Height of 2 M of ball bed upside paragraph the silicon with outfit bigger diameter is able to bear or endure character bolide, the tall aluminium with lesser diameter of outfit of section of the following department is fireproof ball or clay are fireproof ball. Size of fireproof ball diameter, affect directly not only conduct heat area and caustic of air current block, also affect fireproof ball to make finished cost. A variety of elements consider integratedly, the fireproof ball diameter that often uses at present is limits of 30 ～ 60 Mm commonly. Silicon pledges fireproof ball asks to contain SiO2 to be more than 93 ％ , fast aluminous fireproof ball contains Al2O3 quantity to be in 60 ％ ～ 70 ％ limits. Ask fireproof ball is compact, firing temperature is enough.
Get Price
WhatsApp