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Chromium-free magnesium spinel brick for RH furnace as well as preparation method and application of chromium-free magnesium spinel brick
The invention is applicable to the technical field of refractory materials, and provides a sintering-free chromium-magnesium-free spinel brick for an RH (Ruhrstahl Heraeus) furnace as well as a preparation method and application of the sintering-free chromium-magnesium-free spinel brick for the RH furnace, and the sintering-free chromium-magnesium-free spinel brick for the RH furnace comprises fused magnesia particles, fused magnesia powder, nanoscale fused magnesia-alumina spinel powder, composite antioxidant powder and the like. The refractory brick has the characteristics of high refractoriness, high strength, good thermal shock resistance, strong erosion resistance, energy conservation, environmental protection and the like, and is prepared by fully mixing the raw materials in a special raw material mixing device and treating at 150-300 DEG C; the sintering-free chromium-free magnesium spinel brick for the RH furnace can effectively solve the problem that a traditional high-temperature sintered magnesium-chromium brick is poor in erosion resistance and thermal shock resistance stability for a long time when being used in an external refining RH furnace of the steel industry, and particularly, the product does not contain chromium, so that the problem of Cr < 6 + > public hazard of the external refining furnace of the steel industry is effectively solved; and when being applied to an external refining RH (Ruhrstahl Heraeus) furnace in the iron and steel industry, the chromium-free alloy can greatly prolong the service life of a smelting furnace and realize chromium-free treatment.
本发明适用于耐火材料技术领域，提供了一种RH炉用免烧结无铬镁尖晶石砖及其制备方法和应用，该RH炉用免烧结无铬镁尖晶石砖包括电熔镁砂颗粒料、电熔镁砂粉料、纳米级电熔镁铝尖晶石粉料，复合抗氧化剂粉料等组分。具有耐火度高、强度大、热震稳定性好、抗侵蚀能力强、节能环保等特点，其通过采用上述原料在特制原料混合装置中充分混合，并经150‑300℃处理制得，该RH炉用免烧结无铬镁尖晶石砖可有效地解决传统高温烧结镁铬砖在钢铁工业炉外精炼RH炉使用中长期以来存在的耐侵蚀和耐热震稳定性差的问题，尤其是产品不含铬，有效解决了钢铁工业炉外精炼炉的Cr6+公害问题，将其应用于钢铁工业炉外精炼RH炉中，可大大提高冶炼炉的使用寿命，并实现无铬化。
Chromium-free magnesium spinel brick for RH furnace as well as preparation method and application of chromium-free magnesium spinel brick
The invention is applicable to the technical field of refractory materials, and provides a sintering-free chromium-magnesium-free spinel brick for an RH (Ruhrstahl Heraeus) furnace as well as a preparation method and application of the sintering-free chromium-magnesium-free spinel brick for the RH furnace, and the sintering-free chromium-magnesium-free spinel brick for the RH furnace comprises fused magnesia particles, fused magnesia powder, nanoscale fused magnesia-alumina spinel powder, composite antioxidant powder and the like. The refractory brick has the characteristics of high refractoriness, high strength, good thermal shock resistance, strong erosion resistance, energy conservation, environmental protection and the like, and is prepared by fully mixing the raw materials in a special raw material mixing device and treating at 150-300 DEG C; the sintering-free chromium-free magnesium spinel brick for the RH furnace can effectively solve the problem that a traditional high-temperature sintered magnesium-chromium brick is poor in erosion resistance and thermal shock resistance stability for a long time when being used in an external refining RH furnace of the steel industry, and particularly, the product does not contain chromium, so that the problem of Cr < 6 + > public hazard of the external refining furnace of the steel industry is effectively solved; and when being applied to an external refining RH (Ruhrstahl Heraeus) furnace in the iron and steel industry, the chromium-free alloy can greatly prolong the service life of a smelting furnace and realize chromium-free treatment.
本发明适用于耐火材料技术领域，提供了一种RH炉用免烧结无铬镁尖晶石砖及其制备方法和应用，该RH炉用免烧结无铬镁尖晶石砖包括电熔镁砂颗粒料、电熔镁砂粉料、纳米级电熔镁铝尖晶石粉料，复合抗氧化剂粉料等组分。具有耐火度高、强度大、热震稳定性好、抗侵蚀能力强、节能环保等特点，其通过采用上述原料在特制原料混合装置中充分混合，并经150‑300℃处理制得，该RH炉用免烧结无铬镁尖晶石砖可有效地解决传统高温烧结镁铬砖在钢铁工业炉外精炼RH炉使用中长期以来存在的耐侵蚀和耐热震稳定性差的问题，尤其是产品不含铬，有效解决了钢铁工业炉外精炼炉的Cr6+公害问题，将其应用于钢铁工业炉外精炼RH炉中，可大大提高冶炼炉的使用寿命，并实现无铬化。
Chromium-free magnesium spinel brick for RH furnace as well as preparation method and application of chromium-free magnesium spinel brick
一种RH炉用无铬镁尖晶石砖及其制备方法和应用
ZHENG KAIFENG (author) / HUANG XIN (author) / GUO JIFENG (author) / LI HONGLIANG (author) / WANG XINCHAO (author) / YAO FENG (author) / WEI YAHUI (author) / ZHAO XIAOKE (author) / LI LIPING (author) / LI QIAN (author)
2024-06-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
| European Patent Office | 2023
High adhesion repair material for RH furnace chromium-free magnesium-aluminum spinel brick
| European Patent Office | 2015
| European Patent Office | 2020
| European Patent Office | 2020