Is there 0.6 substances close alumina hollow ball brick?

Alumina is hollow ball brick
At present the system of hollow ball brick is in commonner alumina closely 1.2-1.7, it is more difficult that hollow ball goods produces alumina, the price is more expensive also, fireproof material wants the choose and buy according to economic benefits, use condition is waited a moment.
Manage changes target

Project	Alumina is hollow ball brick
	85 bricks	90 bricks	99 bricks
Use temperature ℃	1680	1700	1800
Al2o3 %	≥ 85	≥ 90	≥ 99
Zro2 %
Sio2 %	≤ 15	≤ 8	≤ 0.2
Fe2o3 %	≤ 0.2	≤ 0.2	≤ 0.2
Bulk density G/cm3	1.4-1.7	1.4-1.7	1.4-1.7
Mpa of intensity of normal temperature compression	≥ 12	≥ 10	≥ 9
Loading bate begins temperature ℃	≥ 1650	≥ 1700	≥ 1700
(0.1mpa, 0.6% )
The heavy change that burn a line is led %	± 0.3	± 0.3	± 0.3
(3h of 1600 ℃ × )
Heat up 10-6 of × of coefficient of expansion	～ 7.8	～ 8	～ 8.6
(room temperature - 1300 ℃ )
W/(m.k of coefficient of thermal conductivity)	≤ 0.6	≤ 0.7	≤ 1.5
(Average temperature 800 ℃ )

Is tall aluminous brick alumina hollow ball brick? Either, two are not same kind of product. Tall aluminous brick, al2O3 content prep above the siliceous aluminous refractory products of 48% . Call corundum the brick for instance. According to content of the Al2O3 in tall aluminous brick, normally cent is 3 grade: IClass - Al2O3 content > 75% ; ⅱ . - Al2O3 content is 60~75% ; ⅲ . - Al2O3 content is 48~60% . Alumina is hollow ball brick is with alumina hollow ball and alumina pink are main raw material, combine other binder, become in 1750 ℃ fire; Al2O3 content prep above 90% . Belong to superhigh temperature material energy-saving insulation material.
Does hollow ball brick have alumina what advantage? Alumina is hollow ball brick is with alumina hollow ball and alumina pink are main raw material, combine other binder, become in 1750 ℃ fire. Belong to superhigh temperature material energy-saving insulation material. Reducing furnace weight, transform structure, managing material and energy-saving respect to be able to obtain apparent effect. 1, the use: of high temperature? Gauze?750 spends above, thermal stability is good. Ratio of recrudescent line change is small, can use longer. 2. Optimize a structure, reduce: of weight of the chamber of a stove or furnace? Housing 8  fetters which appear unoccupied place border of Nao captive herd to invade Du of  of awake of  of cut down  still?.6-3.0g/cm, and hollow ball brick has alumina only 1.2-1.5g/cm, with bulk one stere, the weight of hollow ball brick can reduce alumina 1.0-1.9 ton. 3. Save material: ? Lament of Lian of Zou of Mei of  of  of Mi Yi of A Chinese-style unlined garment of  of Quan of  of caries of dew of dream of A Chinese-style unlined garment of neon of  of  of  mace ferment shelters forgive of carboxyl of mother of Shan of shellfish of lament of  of Ping of  of  of that clam of move of volume of Zi wholesale  dash forward  of wholesale of aether of A Chinese-style unlined garment of  of Quan of rare H of herd of a legendary bird with poisonous feathers is measured action, but managing and fireproof insulation material 80% . 4. Energy-saving: ? Wholesale  quantity enrols Yue of green box of that Ji N to provide dinner for abundant  identifies stool  to stop agitate of mace of  tip source already personal Mei seeks mace of  of commission of  of remnant of  of blade of sip of Gou of  of caries of ⑷ of in the company of of Tuo of  of  of N Luan Ч to irrigate flatter Nai Kang Mo ＝ flatters.
Is there 0.6 substances close alumina hollow ball brick? Have, but manufacturing difficulty is great, rarely manufacturer is produced, still have even if the price is high, not be to one's profit, if you have relevant demand, greeting incoming telegram seeks advice, flourish Cheng Naicai is offerred custom-built serve with construction, fireproof material chooses Rong Cheng, economy is efficient macrobian. Liner maintenance looks for Rong Cheng, contractor bag makings is more durable!