Silicon not the brick is with Al2O3 prep above fancy tall bauxite and carborundum are main raw material, use fireproof data principle of answer photograph modified, add proper halation additive, make the product forms solid glair film in its surface below constant temperature, raised sex of shake of the corrosion resistance of the product, wearability, heat-resisting to wait for function greatly. At present about how raising silicon further not high temperature intensity of the brick and the research report that fight thermal shock stability are less. Halation zirconium is joined in working to basically discuss to expect in silicon Mo Zhuanyuan originally arenaceous, research halation is right silicon not the influence of bricky function, in order to satisfy the use requirement of material of rotary kiln liner.
The silicon of silicon Mo Zhuanzhong is to point to carborundum, not be to point to Molaishi. In fact, silicon not the brick is the firebrick that makes by tall bauxite and carborundum. Silicon Mo Zhuanben pledges going up is a kind of tall aluminous brick that adds carborundum only. Among them, the fireproof raw material such as likelihood and Molaishi, 3 stone, corundum mixes a few products.
Carborundum falls to be synthesized by carbon and reaction of 2 oxidation silicon in superhigh temperature and strong the reproducibility conditions. Complex characteristic is carbolic grain is not moved, siO2 and in-between are qualitative (SiO.Si) becomes gas phase above all, be contacted with carbon next and produce reaction. The Mohs hardness of carborundum is as high as 9.5. Carborundum is joined to be able to raise the hardness of firebrick in tall aluminous brick. Such, when grinding bead and firebrick contact, the deepness that wears bead is restricted, when decreasing to grind bead to slide in firebrick surface from firebrick face cut the possibility of certain material, raised the wearability of firebrick thereby.
Silicon not the brick is firebrick of a kind of tall aluminous carborundum. If in silicon Mo Zhuanzhong adds different special and fireproof raw material, also can continue to raise silicon not certain property of the brick, OK also the silicon modified hind not bricky cent is different subclass. For example, in silicon Mo Zhuanzhuan, replace earthy mine with partial andalusite, can make brick of silicon Mo Gong. Brick of silicon Mo Gong besides have good high temperature resistant outside gender and corrosion resistance, still compare silicon not the brick has better hear resistance and seismic sex.
The practice of a lot of cement plants proves, use at 5000t/d new-style the brick of silicon Mo Gong of kiln of dry method water or silicon not transfer on the brick lead the service life that can acquire 12 months; 2500t/d transfers on kiln of new-style cement working a way belt can obtain 1~2 year service life, be equivalent to the 150%~200% of brick of magnalium pointed spar.
1. is joined as zirconium Ying Sha increase dizzily, the sample after different temperature is handled presents the metabolic current that after a bulk density and intensity increase first, reduces basically. Zirconium Ying Sha adds dizzy beautiful method is 10~15% . Dizzy zirconium Ying Sha forms appearance of compact Mo Laishi band in matrix, interweave each other reticulate, matrix structure is compact, matrix and grain union are firm, can make sample gains higher strength. But, if join too much zirconium Ying Sha, can form too much Molaishi, bring about bulk to expand to drop with intensity. 2. In silicon Mo Zhuanzhong joins zirconium Ying Sha, the zirconia of generation is absorbed along with brilliant change advocate what crackle expands is dizzy, eliminate thermal stress, rise rupture tenacity, increase the thermal shock stability of the product and corrosion resistance, improve the service life of firebrick further.
Silicon not bricky product has: Silicon not bricky brand has: AZM-1680/1650/1550/1450, by shape size cent is firebrick of form of standard brick, general, abnormity, distinctive form. 1. Silicon not does bricky AZM-1680/1650/1550/1450 introduce: ? Tenon ┦ and is of deficient of cover of law of Nao of dirty of crash of rare of of of Tao of of Da of quantity of of poisonous of Piao of ⑻ of treasure of of thistle of ⑻ of of of saute of ⒑ of of the word that read foolish which dash forward Hu ?
2. manufactures technology: Silicon not the brick has high temperature resistant, wear-resisting, anti-corrosive, thermal conductivity low, specific power consumption is low advantage. Current, the cooling zone that it covered most cement pit and transfer belt. Silicon not the brick has good thermal shock performance not only, and the use that satisfied cement kiln completely. The basis uses a proof, the temperature outside cement kiln does not exceed 320 degrees, after the brick is used, silicon not detects temperature has 250-280 basically to spend only, reduced temperature of kiln canister surface and specific power consumption greatly. Silicon not bricky hear resistance is very good also, temperature of its load bate can amount to 1600 degrees, cement kiln carrier makes an appointment with 1400 degrees commonly, repeat use a year not to have a problem; Wearability is very good also, accord with a country completely the requirement of fireproof data standard. Silicon not another characteristic of the brick is the meeting in using a process generation is small expand, the test is about as a result 0.45% , be helpful for improving the close together tie between air cylinder and brick, brick, have good bulk stability. But those who need an attention is, heat should stay to expand when build by laying bricks or stones is built seam. General axial is 0.6m-1m, namely 3-5 annulus brick should add chipboard of 1 annulus 3mm, radial brick annulus is controlled 15 pieces every add 3mm chipboard.
In addition, silicon not bricky performance characteristics is distinct excel is able to bear or endure flake the brick of phosphatic tall aluminium with tall aluminous brick and good wearability, because this can pass sexual price produce all sorts of brands than the choice, use at paragraph of different belt, the scope of application of rotary kiln expands ceaselessly. Silicon not bricky function comes from at its craft. Above all, raw material should choose the fancy land mine of AI2O380% above. Carborundum should be pure, mohs hardness asks to be close to 9.5. The choice of carborundum should be very strict. This kind of mineral dispute of constant nature. Most product uses SiO2 and C to synthesize SiC below high temperature in electric stove. Different raw material can produce quality difference. Current, in the manufacturing process of SiC, the SiO2 in raw material comes from natural silica, c comes from coal Jiao Heshi oil is anxious. Study a result according to ours, oil is anxious have taller hardness and wearability index with SiO2 complex carborundum, apply to silicon not brick. These raw material make those who bake bricks advocate brilliant photograph is Molaishi. Carborundum and corundum, these mineral hardness are very tall, for compact sex and high strenth fireproof product laid a foundation.
Silicon not manufacturing technology of the brick 1. The grain grading of slop. Silicon not bricky density is very important. The product with high density can restrain the oxidation of SiC, raise silicon not integrated specifications of the brick. The grain grading of slop affects the density of the product directly. To acquire the product of high density, according to Dinger-Funk formula computation the concentration percentage by volume of all sorts of granuality is compared. The per cent that reachs according to raw material density granuality is comprised next, undertake be adjustmented appropriately through the experiment, get needed fraction matchs manufacturing place.
The mixture of 2. slop. Slop mixes in compulsive blender, experiment into advancing makings order early or late and mix time to experiment. Mix raw material doing first, rejoin bond (liquid) , decomposite 15min. Still undertook aggregate - bond (liquid) - fine pink is wet mixture experiment. From the point of the formation of slop, former better. To joining the slop of phosphoric acid and compound bond, undertake twice mixture, mix for the first time namely add the liquid bond of 60% , 12~24 hour is added after mixing the 2nd times, rejoin the others the bond of 40% . From the point of shaping angle, with mixture 15min is mixed join depressor to do not have too big distinction.
3. is dry and firing. The brick is dry below the temperature that 100 ℃ control 24 hours, loading of kiln is firing. Firing temperature is ℃ of.1500 of ℃ of.1450 of ℃ of.1440 of ℃ of.1390 of ℃ of 1330 ℃ .1350 respectively, 1390? The product with 1440 firing ℃ each target is better. Firing temperature and slop are concerned with bond, phosphoric acid and phosphoric acid are compound the product of the agent is firing temperature range is wider, below relatively inferior temperature, the function index of the product is satisfactory. The product of the bond such as waste liquid of clay, methylic fiber, pulp is firing temperature is higher, the product with 1430 firing ℃ each target is better.
4. makes bricky craft choose grog of alumina of Yang Quan, abide by justice to serve as aggregate, choose SiC ≥ at the same time the carborundum grain of 90% and fine pink, add pink of Si of corundum or andalusite, metal, Al pink and burden appropriately, use grading of 6 class grain, 15min mixes on compulsive blender, with 400t and 630t the machine that press a brick shapes, punch 6? 8, is adobe in channel kiln 1430? The heat preservation after are 1440 ℃ dry 8? 10h.
5. suitable scope: Silicon not bricky configuration adaptability is strong. Traditional fireproof material configuration is in normally kiln mouth. Transfer before belt. Transfer after belt. Cent ungird provided the fireproof data of different function respectively, if pointed spar brick, magnesian chromic brick is mixed,fight flake brick. Mo Gong brick can enclothe silicon completely firing the technology area beyond the belt. A. Drop air cylinder temperature 50 ℃ above, make sure heat is versed in equipment safety moves, reduce red kiln phenomenon. B. Raise rotary kiln heat to use efficiency, reduce specific power consumption 5% above, improve company efficiency. C. Integral performance is good, use bulk effectively to be more than compound product, wear-resisting cycle is long.
In addition, brick of silicon Mo Gong still can ask to be in charge of the special place such as bend to use in 3 wind according to the user, effective resistance of a large number of dust inside 3 wind canal erode strongly and of chloric alkaline flue gas erode, service life can amount to 3 years of above. Silicon not bricky AZM-1680/1650/1550/1450 is a basis large and medium-sized the transition that cement rotary kiln develops to the strict requirement of fireproof material takes a brick. In traditional silicon not on bricky foundation, through adding andalusite raw material, enhance heatproof shake function and heat proof quality further, raise bear bate temperature. Brick of silicon Mo Gong is made according to different raw material, because temperature of this its bear bate is mixed,bulk density differs somewhat. The brick of Mo Gong of raw material silicon of brick of silicon Mo Gong is by special tall bauxite, SiC. Mine of white corundum of frit of andalusite, report, immature soil, clay wait for high temperature fire and become. The manage of brick of silicon Mo Gong changes brick of Mo Gong of function index silicon to have characteristic of the following function. ① is soft degree tall, high temperature resistant performance is superior. ② intensity is high, flake not easily and erode. Rate of ③ heat conduction is low, adiabatic effect is good. ④ flexibility is strong, heatproof shake performance is good. ⑤ density moderate, reduce air cylinder negative charge.
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