鋼纖維澆注料除具有常規(guī)的高溫耐磨損性能外，因在其配料中加入了一定數(shù)量的耐熱不銹鋼纖維，防止了材料中骨料與基質(zhì)在高溫狀態(tài)下產(chǎn)生的漲差，以及在啟停爐時(shí)產(chǎn)生的溫度梯度變化所產(chǎn)生的應(yīng)力而導(dǎo)致?tīng)t墻破壞，同時(shí)，由于鋼纖維的加入，使材料澆注后爐墻整體強(qiáng)度大大增強(qiáng)。
鋼纖維澆注料廣泛使用于水泥回轉(zhuǎn)窯窯口、冷卻機(jī)、噴煤管、分解爐、預(yù)熱器等部位。在鍋爐與爐膛的出口、頂部、側(cè)墻等部位均被使用，在鋼鐵、冶金、化工和建材行業(yè)也被廣泛的使用；在CFB鍋爐中，常用于爐膛出口及側(cè)墻、頂部、旋風(fēng)分離器直段、旋風(fēng)分離器頂、返料器等部位。
Steel fiber reinforced castable is made of high-quality bauxite clinker as aggregate, bauxite clinker and corundum fine powder as matrix, ultra-fine powder and other composite materials as binder and additive, plus stainless steel heat-resistant fiber. The product has the characteristics of high strength, good toughness, good thermal shock stability, anti peeling and wear resistance.
In addition to the conventional high temperature wear resistance, the steel fiber castable is added with a certain amount of heat-resistant stainless steel fiber to prevent the expansion difference between the aggregate and the matrix in the material at high temperature and the stress caused by the temperature gradient during the start-up and shutdown of the furnace, which leads to the damage of the furnace wall, The overall strength of the furnace wall is greatly enhanced after pouring.
Steel fiber castable is widely used in cement rotary kiln mouth, cooler, coal injection pipe, calciner, preheater and other parts. It is widely used in the outlet, top and side wall of boiler and furnace, as well as in iron and steel, metallurgy, chemical industry and building materials industry; In CFB boiler, it is often used in furnace outlet, side wall, top, straight section of cyclone separator, top of cyclone separator and return feeder.
| 指 標(biāo) | 普通類 | 高強(qiáng)類 | |||
| Al2O3 不小于 | 70 | 83 | 70 | 80 | |
| 常溫抗折強(qiáng)度Mpa不小于 | 110℃ | 9.0 | 9.0 | 10.0 | 12.0 |
| 1100℃ | 5.5 | 6.5 | 10.0 | 12.0 | |
| 常溫耐壓強(qiáng)度Mpa不小于 | 110℃ | 70 | 70 | 70 | 80 |
| 1100℃ | 40 | 50 | 70 | 80 | |
|
1100℃～室溫水急冷急熱循環(huán) 5次后抗折強(qiáng)度，Mpa不小于 |
4.5 | 5.5 | 5.0 | 5.0 | |
| 1100℃燒后線變化率，% | ±0.4 | 0.5 | 0.4 | 0.5 | |