A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention belongs to the technical field of refractory materials, and particularly relates to a high-performance refractory castable which is prepared from the following raw materials: high-alumina bauxite, high-alumina cement, silica fume, alumina powder, bauxite fine powder, a water reducing agent, an additive and nano cellulose, the high-alumina cement, the silica fume, the alumina powder, the bauxite fine powder, the water reducing agent, the additive and the nanocellulose are powder materials, and the refractory castable has the beneficial effects that the water consumption required by construction is relatively low and is generally 6-7% of the weight of the refractory castable, so that the refractory castable has high density and low porosity; meanwhile, the material has the characteristic of volume stability at high temperature, and the volume is reduced after drying and calcining; the refractory castable not only has higher normal-temperature curing strength, but also has the strength which is not reduced after medium-temperature and high-temperature treatment, and the strength value is 5 times that of a traditional refractory castable; the use amount of cement is reduced, so that the number of low melting phases in the low-cement castable is reduced, and the high-temperature function is obviously improved.
本发明属于耐火材料技术领域，尤其为一种高性能耐火浇注料，由以下原料组成：用高铝矾土、高铝水泥、硅灰和氧化铝粉、铝矾土细粉、减水剂、添加剂和纳米纤维素，其中高铝矾土为骨料，高铝水泥、硅灰和氧化铝粉、铝矾土细粉、减水剂、添加剂和纳米纤维素为粉料，其有益效果是：在施工所需用水量较低，通常为耐火浇注料分量的6‑7％，因而具有高的致密度和低的气孔率；同时在高温下具有体积稳定性的特点，经干燥和煅烧后，体积收减小；不仅仅具有较高的常温固化强度，同时在经中温文高温处理后的强度不发生降低，强度对值为传统耐火浇注料的5倍；因为对于水泥的用量减少，因而，减少了低水泥浇注料中低熔相的数量，从而使高温功能能显着改善。
The invention belongs to the technical field of refractory materials, and particularly relates to a high-performance refractory castable which is prepared from the following raw materials: high-alumina bauxite, high-alumina cement, silica fume, alumina powder, bauxite fine powder, a water reducing agent, an additive and nano cellulose, the high-alumina cement, the silica fume, the alumina powder, the bauxite fine powder, the water reducing agent, the additive and the nanocellulose are powder materials, and the refractory castable has the beneficial effects that the water consumption required by construction is relatively low and is generally 6-7% of the weight of the refractory castable, so that the refractory castable has high density and low porosity; meanwhile, the material has the characteristic of volume stability at high temperature, and the volume is reduced after drying and calcining; the refractory castable not only has higher normal-temperature curing strength, but also has the strength which is not reduced after medium-temperature and high-temperature treatment, and the strength value is 5 times that of a traditional refractory castable; the use amount of cement is reduced, so that the number of low melting phases in the low-cement castable is reduced, and the high-temperature function is obviously improved.
本发明属于耐火材料技术领域，尤其为一种高性能耐火浇注料，由以下原料组成：用高铝矾土、高铝水泥、硅灰和氧化铝粉、铝矾土细粉、减水剂、添加剂和纳米纤维素，其中高铝矾土为骨料，高铝水泥、硅灰和氧化铝粉、铝矾土细粉、减水剂、添加剂和纳米纤维素为粉料，其有益效果是：在施工所需用水量较低，通常为耐火浇注料分量的6‑7％，因而具有高的致密度和低的气孔率；同时在高温下具有体积稳定性的特点，经干燥和煅烧后，体积收减小；不仅仅具有较高的常温固化强度，同时在经中温文高温处理后的强度不发生降低，强度对值为传统耐火浇注料的5倍；因为对于水泥的用量减少，因而，减少了低水泥浇注料中低熔相的数量，从而使高温功能能显着改善。
CASTABLE REFRACTORY COMPOSITION, CASTABLE REFRACTORY, AND METHOD OF PRODUCING CASTABLE REFRACTORY
| European Patent Office | 2022