Why should industrial kiln furnace set firebrick of build by laying bricks or stones? Kiln cylindrical shell is coil to make and be become by armor plate, what intensity of kiln cylindrical shell follows temperature is elevatory and reduce. When fire cement grog, firing take air current temperature to often be as high as 1600~1700 ℃ , stock temperature is 1450 ℃ , if do not increase protection, canister experience is burned out very quickly. The firebrick that set build by laying bricks or stones protects cylindrical shell namely, prolong its service life, it is normal production otherwise but little measure. On the other hand, set firebrick of build by laying bricks or stones, still have adiabatic effect, reduce cylindrical shell heat loss due to radiation, reduce specific fuel consumption, the heat that raises kiln is put rate, raise yield, reduce cost. At the same time line makings still has the accumulation of heat, effect that has heating up exchange. Illustrate: The action rotary kiln of line of rotary kiln kiln kiln line is to show build by laying bricks or stones builds the fireproof material layer in the surface inside rotary kiln cylindrical shell, of firebrick choose proper, and the quality stand or fall that sets build by laying bricks or stones, the long-term safety that affects kiln directly runs, of the crop that also affects kiln at the same time and heat energy use up. Kiln line basically has the effect of the following respects: Cylindrical shell of ① general rotary kiln can bear 400 ℃ control temperature, kiln line can bear 1600 ℃ left and right sides. Kiln line can reduce high temperature gas and stock to be eroded to cylindrical shell chemistry with mechanical wear, protect kiln cylindrical shell. ② is appropriative conduct heat medium, kiln brick can absorb one part quantity of heat from inside gas, send stock with different conduction and radiation means. ③ kiln line is OK and adiabatic heat preservation, reduce kiln body to heat up a loss to wait. How better step builds firebrick firebrick when build by laying bricks or stones is built, should stagger the brick is seamed, the brick is seamed need to use fireproof slop (dry fireproof noodles or vermicelli made from bean or sweet potato starch is used when dry build by laying bricks or stones) cram. Expand to compensate the bulk after be heated of body of build by laying bricks or stones, when build by laying bricks or stones is built, need to press design and normative requirement to stay set expand seam. Build by laying bricks or stones builds boiler setting to be straight form wall and wall of circular arc form by its form cent two kinds. Before build by laying bricks or stones of straight form wall is built, should the make level of tool reference plane boiler setting low layer, go up in foundation of body of heater or the line is put by construction graph on steel structure. Measure body of heater line of vertical, transverse center and other datum line, in make sure the principle of each place dimension leaves body of heater, accurate spy line of wall body dimension. Wall body build by laying bricks or stones is built should level off is perpendicular, every brick should pull line build by laying bricks or stones to build. Level of layer of wall body brick is spent should use rely on feet and horizontal feet examination, the verticality of the wall or gradient should introduce example, line hammer and examination relying on feet. Inside same layer, the brick is seamed should stagger by regulation, the brick seams the slop inside the beard is full, its surface wants rigor to tick off seam. After be heated of body of corner build by laying bricks or stones, expand stress compares concentration, it is the weak point of the wall, should be machined seriously and spell firebrick of build by laying bricks or stones, achieve the fault is seamed and tick off seam rigor, build by laying bricks or stones builds the vertical lap seam of layer of adjacent of photograph of the fluctuation when wall battlements to all should stagger. If straight form wall has width to be less than the hole of 450mm, the layer should be chased to highlight with brick when bricklaying, of every brick salient must not exceed 75mm; If width is in,be less than the hole of 250mm, treatment brick should ask by blueprint build by laying bricks or stones is built. The superstratum of the wall should maintain a level, treatment brick make level can be used when wanting. The transverse vertical stroke of wall of circular arc form is seamed call radiative seam, fore-and-aft level is seamed call annulus to seam. Wall of circular arc form uses wedge brick or special shaped brick more, answer to machine build by laying bricks or stones carefully to build on steel structure face and the osculatory place between the face that turn over arch. Vault build by laying bricks or stones is built, want to press build by laying bricks or stones of arch axis circular arc to build, also but spray layer is datum plane. The fault of wall of circular arc form is seamed, want to be a foundation with parabola arch and catenary arch. Firebrick of filling brick principle is in firebrick of industrial kiln furnace the safeguard that safe domain gave people to bring security, but because the influence of outside ambient brings about partial firebrick to appear,also meet at the same time the phenomenon of local damaged, need us to safeguard at this moment so with repair these firebrick. General the mend by replacing a damaged part that the firebrick that we know to production of industrial kiln furnace comes out basically is brick of chromium pointing to magnesium and pointed spar brick. Next one filling bricks introduce to need watchful item for everybody below: 1. Filling brick uses as identical as old brick manufacturer the bricky;2 of same batch. Use as far as possible as same as old brick the rest of second overhaul comes loose brick (note: The brick of be affected with damp be affected with damp or damage due to throw is forbidden make) ;3. The interface of new old brick hits fireclay;4. New old brick cannot hit iron plate;5 between interface face. The two side brick of the brick that lock up a mouth is seamed cannot make iron plate, the iron plate of two annulus brick wants photograph adjacent to stagger each other, the both sides that is the same as a brick cannot hit iron plate;6. Iron plate is complete the;7 in infiltrating the brick is seamed. The heal of brick of before a few annulus inserts bricky mouth from flank, one annulus brick uses the front to insert bricky heal;8 after. Deserve strictly to be built than having step according to what design a brick, must not change build by laying bricks or stones to build at will deserve to compare;9. Of brick of mend by replacing a damaged part expand seam chipboard to must not be ripped except, wet build by laying bricks or stones of brick of mend by replacing a damaged part (fireclay oar is full degree should achieve 95% above, forbidden occurrence brick is big do not have fireclay, small head has fireclay, if this kind of circumstance appears, answer to demolish serious step;10 in time. Do not use as far as possible when mend by replacing a damaged part (or decrease use) treatment brick. The principle of mend by replacing a damaged part: From weak point of the brick the mouth digs a brick, but cannot dig a brick at the same time 3 annulus above. If be successive much annulus mend by replacing a damaged part, become loose to prevent bricky whole, first mend by replacing a damaged part 2 annulus are rear can continue backward mend by replacing a damaged part. The attention when digging a brick observes the condition of degree of tightness of complete ring brick, if produce bricky whole to become loose, stop mend by replacing a damaged part instantly, the two side annulus that will shake a brick with the iron plate that lock up a brick is seamed insert close, affirm after close solid do not become loose rear can continue mend by replacing a damaged part works. Fireproof material occurrence craze, fall off, easy how to wear away to do? Want to solve a problem thoroughly, need to be dug from germ, the analysis gives real reason, flourish Cheng Naicai is engaged in be able to bear or endure service of timber production, research and development is old, can solve all sorts of difficulty problems of liner of furnace of high temperature kiln, welcome broad new old friend to seek advice reach technical communication.
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