Does commonly used light qualitative firebrick have kiln furnace thermal insulation what?

Kiln furnace is high temperature equipment, do good heat preservation to be able to reduce waste of quantity of heat, managing the sources of energy, what does the light qualitative firebrick with kiln furnace commonly used heat preservation have, detailed introduction looks please below.


1, light qualitative silica brick pledges silicon pledges adiabatic brick is the Si02 content that controls for main raw material with silica gently do not be less than the adiabatic and refractory products of 91% . Light qualitative silicon pledges the bulk density of adiabatic brick is 0.9-l.lg/cm3, thermal conductance has the in part of common silica brick only, heatproof shake sex is good, its loading bate begins temperature to be able to amount to 1600 ° C, brick of outclass clay qualitative heat insolation. Consequently highest use temperature can amount to brick of silicon qualitative heat insolation 1550 ° C. Not contractive below high temperature, still have even expand faintly.
Light qualitative silica brick uses crystallization quartzite to be raw material commonly, combustible substance is added in batch, wait like coke, anthracitic, sawdust, or form poriferous structure with aeriform foaming. With the manufacturing industry likeness of common silica brick, a few mineralizer are joined in burden (CaO, Fe203) with promoting quartz change, make bond make adobe has particular strength with pulp waste liquid. Using coke or anthracitic when making combustible, because grey branch takes Fe203 and Al2O3, do not need to add Tie Lin additionally in burden. When light qualitative silica brick is firing, in 1200 ° C should keep strong oxidizing flame before, enroll content is complete burn oneself out.
Pledge the mineral composition of silica brick is gently: Phosphorous quartz 78%-86% , fang Shiying 78%-86% , quartz 78%-86% . The compression intensity 2.0-9.5MPa of general light qualitative silica brick, thermal conductance 0.35-0.42W/(m.K) . Light qualitative silica brick has good fireproof performance, loading bate temperature is close to compact silica brick to achieve above of 1620 ° C, only a few remains expands, and its thermal stability can compare compact silica brick good. Accordingly, light qualitative silica brick can be in do not use as for a long time as C of ° of the 1500-1550 below the high temperature condition of slaggy contact.
2, Molaishi gets together light adiabatic brick pledges Molaishi pledges adiabatic brick is the adiabatic and refractory products that is main raw material to be made with Molaishi gently. Brick of Mo Laishi qualitative heat insolation high temperature resistant, intensity tall, thermal conductance is low, can contact blaze directly, apply to the liner of all sorts of industrial furnace kiln. Mo Laishi gets together light adiabatic brick gives priority to aggregate with high grade Molaishi, via special technology production is made, this product is fireproof degree tall, weight is light, effect of heatproof shake, heat preservation is good, can bear brick of other heat preservation cannot susceptive blaze concussion wears away, but price of brick of Mo Laishi heat preservation slightly tall.
Mo Laishi gets together light adiabatic brick, it is brick of a kind of light qualitative heat preservation, also call Molaishi heat preservation brick, have effect of favorable heat preservation heat insolation, system is secret little weight is light also be one of its characteristic, firebrick manufacturer uses Molaishi (3Al2O3 · 2SiO2) give priority to brilliant photograph, and get together light ball agglomeration, use a circumstance actually to undertake according to the user custom-built turn production. Mo Laishi gets together light brick use temperature can amount to ℃ of 1350 ℃ ~1700, can contact blaze directly, general alumina content is in 65% ～ 75% between. Mineral composition divides Molaishi outside, contain alumina among them inferior person still contain a few glass photographs and Fang Shiying; Contain alumina taller person still contain a few corundum. The use temperature that Mo Laishi pledges bricky basis differs gently produces many grade, this product has: Purity is tall, matter content is little; High temperature resistant, can contact blaze directly (this very important) , be able to bear or endure all sorts of atmosphere are corroded; Low heat conduction, low hot frit; High strenth, and have good heatproof shake performance; Dimension precision is tall, but aleatoric cut. Regard hot side as fireproof liner or other the thermal insulation back line of fireproof material.
Inferior heat conduction leads: Have very good adiabatic effect, can make boiler setting ply attenuates.
Low thermal capacitance: Because its are light,lead with low heat conduction character, light qualitative Molaishi the heat energy with very few save up of bricky series product, energy-saving in operating kiln by fits effect is apparent.
Low matter content: Have low-down iron and alkali metal content of low frit content, consequently fireproof degree tall. Higher aluminous content makes its still maintain good performance below reducing atmosphere.
This kind of product can contact blaze directly, have spend tall, coefficient of thermal conductivity high temperature resistantly, gently small, energy-saving effect is distinct wait for a characteristic. Use extensively at the furnace of kiln of channel kiln, roller path kiln, shuttle type kiln, hot-blast stove, report, aerification, furnace that make energy of life, furnace that make hydrogen to wait for equipment of furnace of high temperature kiln. The exterior dimension of goods, manage changes index, service life to all achieve the client's requirement.
3, the small qualitative refractory products that brick of argillaceous heat preservation pledges argillaceous brick is AL2O3 content 30%-46% gently, belong to </u> of firebrick of <u> of adiabatic heat preservation. Use clay grog or pledge argillaceous grog is mixed gently but model clay is main raw material, use combustible law production. Burden and water mix make but model pug or slop, with extrusion or pouring shape, dry hind in 1250 ℃ - in atmosphere of 1350 ℃ oxidation firing.
Dimension of norms of standard of brick of light qualitative clay is 230*114*65mm, bulk density is 0.75-1.20g/cm3, compression intensity is 2.0-5.9mpa, thermal conductance is 0.221-0.442w/(m.k)(1350 ℃ ) ,
Item characteristics: (1) high temperature resistant. (2) bricky system interior is poriferous structure, sex of adiabatic heat preservation is good. (3) porosity is tall, bulk density is small, quality is light. (4) be able to bear or endure chemistry is eroded.
Brick of light qualitative clay basically is used at all sorts of plant high melt is not contacted in industrial kiln furnace content and without the thermal insulation stuff that eats aeriform action.
The safety that brick of light qualitative clay allows in it only bears in temperature, ability produces adiabatic result. In kiln furnace, regular meeting of general liner place classics gets the direct contact of blaze and slag, apply to heavy qualitative brick only. Brick of light qualitative clay basically applies in the thermal insulation of hot project facilities and industrial kiln furnace, can use at having stock of melt of intense high temperature to erode to reach erode the place of action, a fireproof coating, reduce be eroded by slag and soot of heat vital energy erodes, decrease mar. Of course, in be not fusion furnace, do not contact with blaze. Temperature upper limit in the kiln furnace under brick of light qualitative clay, can come with brick of light qualitative clay entirely build by laying bricks or stones is built.
4, light qualitative tall aluminous brick pledges gently of tall aluminous brick fireproof degree of tall, unit weight is little; Raw material is rich, firebrick is low-cost, it is better heat-insulating material. According to workmanship different, light qualitative tall aluminous brick can use bubble method or add character legal system to become. Crocus of tall aluminous aluminous canister and A12O3 content are the heavy level that uses A12O3 content to be controlled for 55 ％ the combinative clay of 31-32% is fine play the part of raw material. Of fine pink of tall aluminous aluminous grog and combinative post earth deserve to compare for 9: 1. Add the water of 48-50% , abrade in ball mill 1-2h, slop passes 0.2mm sieve entirely, slop proportion 1.7-1.9, PH value is 7.
Light qualitative tall aluminous brick uses tall aluminous aluminous grog to add a few clay normally, law or bubble law produce with gas after classics mill with slop form pouring, figuration, via 1300 ～ 1500 ℃ are firing. Also can replace partial alumina grog with industrial alumina sometimes.
With the liner that builds kiln furnace at build by laying bricks or stones and thermal insulation, and erode without stock of melt of intense high temperature reach erode the place of action. When be being contacted with blaze directly, temperature of watch surface contact does not get prep above 1350 ℃ .
5, zirconia is hollow ball brick zirconia is hollow ball brick goods is one kind can be in the superhigh temperature of 1800-2400 ℃ is energy-saving model small qualitative particular kind is fireproof material. Because this is planted,the thermal conductance of goods is 0.3-0.4W/ (M.k)-1, make adiabatic lining material not only on furnace of club of furnace of all sorts of superhigh temperature electric stove, aluminous silk, tungsten, OK still and direct charge for the making of sth. makes the lining material of the layer. Zirconia is hollow ball brick is to use electric frit law to blow make zirconia hollow ball, in zirconia bond is added in hollow ball, the course shapes and firing the zirconia that makes is hollow ball brick goods. Hollow ball brick has this zirconia purity is tall (≥99% of content of ZrO2+ stabilizing agent) , high temperature resistant (use temperature can achieve 2200 ℃ ) adiabatic function is good, chemical stability is excellent characteristic, liner of the heat of intermediate frequency induction that basically is used at hard alloy, melt quartz furnace and operation temperature are in the superhigh temperature equipment of 2000 ℃ above works liner or adiabatic line.