What distinction do tall aluminous adiabatic brick and tall aluminous firebrick have?

Tall aluminous adiabatic brick basically uses heat preservation heat insolation, bricky body whole body bestrewed beehive shape bleb equably, basically be being used at thermal insulation do not contact blaze commonly; Tall aluminous firebrick belongs to heavy simple product, bricky substance appearance is in-house and smooth, solid close together, basically use in working layer; These two kinds of products belong to expensive aluminous simple product together, main distinction depends on the exterior, body waiting closely with utility.


The Al2O3 content that tall aluminous adiabatic brick controls by aluminous alumina not under the adiabatic firebrick of 48% . Tall aluminium adiabatic firebrick, basically be grog of the alumina that use aluminium, mix with clay, join adhesive and sawdust, to improve the performance of the product, add stone of line of silicon of industrial alumina corundum. The product of above of bulk density 0.4g/cm3 but product. The content of Al2O3 and bulk density are different, highest use temperature is different also, it is commonly between 1250~1350 ℃ , some can achieve 1550 ℃ .

Tall aluminous firebrick calls tall aluminous brick his again manufacturing technology and stick person brick likeness, distinction is brushing tall aluminous grog at matching pink more, fireproof performance is stronger than argillaceous brick, acid-proof and alkalescent good, apply to all sorts of kiln furnace firing the place such as the belt. Content of Al2O3 of siliceous aluminous firebrick is more than 48% , a general designation is tall aluminous firebrick. By Al2O3 content cent is 3 grade: IWait (Al2O3>75%) ; II (Al2O360%~75%) ; II (Al2O348%~60%) . According to mineral composition, can divide for low Molaishi (include silica) with Molaishi (Al2O3 is 48%~71.8%) , Molaishi - corundum and corundum - not quarry (Al2O3 is 71.8%~95%) , corundum (Al2O3 is 95%~100%) to wait for firebrick. The manage of tall aluminous firebrick changes index to see figure below. As the addition of content of the Al2O3 in tall aluminous firebrick, mo Laishi and the amount of corundum also increase, glass also decreases accordingly, the fireproof sex of tall aluminous firebrick and density also increase. In tall aluminous brick Al2O3 content falls under the circumstance of 71.8% , in tall aluminous brick, exclusive high temperature stabilizes brilliant photograph to be Molaishi, increase along with Al2O3 content and increase. Al2O3 content pledges in the tall aluminium of 71.8% above firebrick, its high temperature stabilizes brilliant photograph to basically be Molaishi and corundum, of the addition that follows the accretion of 71.8% , corundum, Molaishi decrease, the high temperature capability of tall aluminium firebrick rises accordingly.
Why does tall aluminous adiabatic brick have even bubble? One, bubble preparation. Bubble is material of active of a kind of surface substantially. Bubble is the airy in fluid photograph dispersive system. In this system, air is dispersive photograph, the liquid is the dispersive medium with detached bleb. Adsorption layer is formed at gas one liquid interface, exterior active is bigger. Adsorption layer is stronger, the capability of adsorptive solid granule is stronger. The stability of adsorption layer and bubble chroma are concerned. The PH of fluid of fluid photograph peptization is worth the effect that also gets PH value, the PH value that our country is versed in the factory is used for the most part is 8~9. When exterior active corporeal element is in exterior layer is arranged mediumly when be in not saturated condition, bubble is the stablest. Right now, foaming agent is OK and complete to hydrate, be united in wedlock with water dungeon solid. The quality of foaming agent decides: commonly by 3 function index? Beans  holds bath ⒚ in the palm to call on 3 ＜  is  of be jealous of of  Kang Tuanshu  on ticket of  of bead of Jing of ⑴ of  of Zhai tending or guard a gate washing with watercolors mounds an ancient type of banner hoisted on a featherdecked mast of the Qian on  of  of ㄎ of any of several hot spice plants holds?31%) , naOH(6.1%) , water (62.9%) , water (62.9%) , heat to 70~90 ℃ , make colophony complete deliquescent, saponification. After refrigeration, 3~4 is washed with brine on the screen mesh of 0.147 millimeter second, wash 1~2 with clear water next second, make the value achieves 8~9, get flaxen pine soap. The mix in adding colophony black hot glue is even, make colophony black foam. Commonly used and aluminous or bubble stabilizing agent is vitriolic aluminous. Below hot condition, mix glue and colophony black emulsion, use water dilute to the liquid of % colophony content next, save with this condition next. The foaming agent need that enters production is 1.0~1.10g/cm3 to density with water dilute. 0.5%(of the toilet soap that contain a pine is fundamental) with colophony. Water glue 0.5%(is a foundation with water glue dry weight) small and even white foam can be made after bubble is being hit in making bubble machine with the water of % . Its bulk density is 0.04~0.05g/cm3.
2, the modulation of bubble slop. The sawdust bit with the clay of grinding, will tall aluminous aluminous grog and good screening and water mix make slop. Mix ready bubble to make bubble slop in mixer in proportion next. The scale of bubble and slop depends on the bulk density of the product. 0.51~1.26g/cm3 of density of bubble slop bulk, can make the product of bulk density 0.4~1.0g/cm3.
3. shapes use pouring shape, bricky model can use wooden model or metal pattern. The working surface Ying Guang of bricky model slips, besmear has lubricant. Put bricky standard in what take mat paper dry board on, infuse bubble slop. Organize a structure to avoid to the product generates bubble and affect its, form a vesicle should slow fast undertake, make size is in the mould retroflexion or oscillation with eduction, next reoccupy board raze is odd and serous. 4. Dry and pouring hind, take a model to control dry 18~20h in 40 ℃ , the drawing of patterns when 3~5mm clearance is opened all round bricky model, continue dry, temperature can raise 80~90 ℃ , when channel desiccator is dry, entrance temperature does not exceed 40 ℃ , outlet temperature does not exceed 150 ℃ . Bricky remains moisture: Standard type does not exceed 3% , large brick does not exceed 1% . Dry it is crucial process. If control is undeserved, meeting occurrence crackle, bottom is crisp, sunken heart, sticking to mould, drop the waste product such as edges and corners. 5. Firing pile up loading of kiln with side, build with silica brick frame adobe the code is deposited in frame. The height that pile up an agree must not exceed 1.6m. According to product volume density and Al2O3 content position of affirmatory loading of kiln is mixed stop igneous temperature. Stop igneous temperature is 1320~1380 ℃ commonly, heat preservation time is 5~8h. Al2O3 content is higher, stop igneous temperature is higher, be as high as 1580~1620 ℃ even. As a result of pouring shape, fire product figure is irregular, need abrade plastics, make appearance accords with a requirement.
What distinction do tall aluminous adiabatic brick and tall aluminous firebrick have? Tall aluminous adiabatic brick basically uses heat preservation heat insolation, bricky body whole body bestrewed beehive shape bleb equably, basically be being used at thermal insulation do not contact blaze commonly; Tall aluminous firebrick belongs to heavy simple product, bricky substance appearance is in-house and smooth, solid close together, basically use in working layer; These two kinds of products belong to expensive aluminous simple product together, main distinction depends on the exterior, body waiting closely with utility.