How is light qualitative silica brick produced?

Light qualitative silica brick belongs to acidity material to pledge, commonly used the place of heat preservation heat insolation at furnace of kiln of Jiao Lu, glass.


Product of light qualitative silica brick introduces: Call silicon heat preservation the brick again. Content of 2 oxidation silicon exceeds 91 ％ , accumulation density the light simple fireproof stuff under 1.2g / Cm3. Fireproof spend and bear bate temperature and likeness of common silica brick. However, because have a lot of opening, its compressive strength, fight slaggy sex and be able to bear or endure corrode sex is inferior to common silica brick, and heat-resisting concussion sex gets ameliorative. The mineral composition of silicon insulation firebrick is 78 ％ - the phosphorous quartz of 86 ％ , 13 ％ - the Fang Shiying of 15 ％ and 4 ％ - the quartz of 7 ％ . Caboodle density is 0.9-1.19g / Cm 3, compressive strength is 2.0-5.9MPa, coefficient of thermal conductivity is 0.35-0.42w · (M · K) . It has good fireproof performance, bear bate temperature is close to 1620 ℃ , only a few remains expands, and the silica brick with compact excel of its thermal stability. Jiao Lu is a kind of structure complex, the heating power device that can use for a long time continuously. Its purpose is the condition that keeps apart in air next heating that keep abreast of to 950-1050 ℃ a carbonization, get coke and other by-product thereby. As a result of its good thermal conductivity, high laden bate temperature, strength of good high temperature machinery, the bulk change below high temperature is stable, fireproof sex is small, remains expands small and aggressivity of acid-proof broken bits is strong, silica brick already made main and fireproof material of Jiao Lu. Manufacturing process: With 2 oxidation silicon small pink is raw material, critical bead diameter is not more than 1mm normally, the bead diameter that is less than 0.5mm is not less than 90 ％ . Be added in raw material through will combustible material or poriferous structure builds a method to form through gas, be formed through fire. Also can make not flaming product. It basically is used at needing heat insolation or reduce self-prossessed and as not direct as fuse-element contact, each parts of the kiln furnace of the rapid change of the action that does not have aggressivity gas and temperature. When be used below high temperature, must not contact with alkalescent and fireproof material. According to material different, use temperature is 1200-1550 ℃ . Suitable scope: Light qualitative silica brick can be divided by utility for I class and II class. The coping that one form product uses at steel rolling heating furnace and firebrick industry firing or kiln supports, can contact with blaze directly. 2 form product is used at the partition of equipment of industrial heating power. The light qualitative silica brick that produces with the method that can light additive has bulk density big, permeability is tall, heat proof quality is poor, the good point with mechanical low intensity. Through bubble law production pledges silica brick can offset afore-mentioned weakness gently.
How is light qualitative silica brick produced? (1) raw material, mineralizer and adhesive are raw material with stone stone and useless silica brick, the canal is entered to grind after crusher of the type that use jaw is broken machine, smash the fine pink that bead diameter is less than 0.088mm reserves. Content of Fe2O3 + FeO>The iron sheet of 95 ％ and CaO content>The slaked lime of 20 ％ uses as mineralizer, the calcic solution of lignin sulphur acid that chroma is beauty of 14 degrees of wave uses as binder. (2) the recipe that the oar expects preparative oar expects is: Pink of 65 ％ quartz, 35 ％ abandon silica brick pink, 14 ％ milk of lime, 1.5 ％ iron dirties, 0.5 ％ bone glue, the water of calcic solution of acid of 3 ％ lignin sulphur and 45-48 ％ . Put the stuff that afore-mentioned getting ready into pebble ball mill more than 10 hours, the screen that passes 0.048mm next namely mud. (3) preparation vesicant it is comprised by vesicant of colophony acerbity natrium and solution of stabilizing agent bone glue. Through adding colophony is mixed alkaline saponification of vesicant of colophony acerbity natrium. Scale is: Colophony: Oxyhydrogen changes sodium: Water = 10: 1: 10. Heat and fuse these 3 kinds are foaming agent. The scale of solution of stabilizing agent bone glue is: Bone glue: 16 ∶ of water ＝ 72. Add the colophony natrium foaming agent of preparation in solution of stabilizing agent bone glue, mix amalgamative agitate to serve as foaming agent. When use vesicant, with dilute of 8 times hot water, use 15 minutes in bleb canal next. (4) makings of preparation bubble oar puts the slop that has made into beating bucket, join in slop 0.1? Of 0.15 ％ aluminous, agitate 2 minutes, add foaming agent next, the 1 ％ of rejoin slop, agitate till the surface does not have bubble. The accumulation density that bubble oar expects is 0.65g / Cm 3. What make gotten bubble size do not answer long teem, lest affect its quality. (5) cast reach dry in poriferous aluminium (or the ground) on, place dimension to be the bare wood model of 285 X 150 X 100mm, in aluminium (or the ground) with wood waste paper is placed between the model, enter bubble oar the matrix in board next. Bricky surface should drive up in order to avoid dry hind cave. The brick is dry below the in 30-45 ℃ dry temperature in channel drier. Dry after 24 hours, bricky drawing of patterns, retroflexion after 48 hours and put in flank. Moisture content of the brick is ％ of Lt; 3 of 96 hours of ＆ , can burn. (6) firing reach finished product to machine brick and silica brick to be together in channel kiln fire. Kiln is packed through erect frame, the brick is OK and perpendicular place. Firing temperature is 1350-1375 ℃ . Heat preservation rate is 32H, fire time is 196h, yield is 92.8 ％ . Firing brick (or preform) by grind machine cut and molar, process the product of all sorts of norms and model next.
Flourish Cheng Naicai regards professional fireproof material manufacturer as the home, quality is good, the price is low, flourish Cheng Naicai uses the manufacturing technology of automation and device, introduce advanced management and qualitative check system, ensure each batches of fireproof material can achieve the requirement of the user, product quality is worth you to trust.