Wear-resistant refractory 錢兒castables are made of h玩鐘igh-alumina bauxite cli雨術nker, corundum and silicon carbide and 票鄉other wear-resistant raw北城 materials, with alu歌討minate cement as binder and 南場external additives. 員她An excellent refractory ca員還stable, a material that is formed by票月 casting or vibration.
Wear-resistant refractory術靜 castables are classified河船 according to rationalization perfo們筆rmance: NMJ-I, NMJ-II.N, M, and 雨年J represent the three words of resista喝公nce, grinding and pou子山ring.
|
Project |
Corundum (silicon carbi暗物de) wear-resistant refractory 少術castable |
|
Index |
NMJ-I |
NMJ-II |
|
Bulk density（110℃&plus街問mn;5℃X24h） |
Kg/m3 |
2900～3100 |
2800～3000 |
|
Drying compressive s用自trength（110℃±5℃X24h） |
MPa |
≥70 |
≥65 |
|
Compressive strength after些輛 burning（1200℃X3h） |
MPa |
≥90 |
≥80 |
|
Drying strength（110℃±5℃X事水24h） |
MPa |
＞10 |
＞10 |
|
Thermal shock stability日黃（900℃，Water cooling） |
Times |
≥25 |
≥25 |
|
Change rate after bu街了rning, heat preservation for 3h, test 男討temperature not greater亮花 than ±1% |
℃ |
1300 |
1300 |
|
Refractoriness |
℃ |
≥1770 |
≥1750 |
|
Wear resistance（90慢到0℃X6h） |
CC |
＜8 |
＜8 |
|
Chemical Composition SiC Al2O3 |
% |
— |
≥30 |
|
≥75 |
≥50 |
It is suitable for the linin樹美g of high temperature parts such as cyc金嗎lone furnace and coal-fired 務鄉furnace refractory belt. Wear-re紅好sistant refractory castablesare mad請鐘e of high-alumina bauxit票新e clinker, corundum and 訊什silicon carbide and other wear-算喝
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