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Al2O3-Cr2O3 refractory product taking chrome corundum as aggregate
The invention belongs to the technical field of refractory materials, and mainly relates to an Al2O3-Cr2O3 refractory product taking chrome corundum as aggregate. The Al2O3-Cr2O3 refractory product taking the chrome corundum as the aggregate comprises the aggregate and a matrix, the aggregate is electric smelting Al2O3-Cr2O3 particles, and the content of the aggregate is 55%-75% of the total mass of the raw materials; the matrix comprises Al2O3-Cr2O3 fine powder or one or combination of components capable of forming an Al2O3-Cr2O3 solid solution, and a thermal shock resistant agent or a sintering aid is also added into the matrix; the content of the matrix is 25-45% of the total mass of the raw materials; the aggregate and the matrix are uniformly mixed by the binding agent and then are subjected to mechanical pressing, drying and sintering to obtain a product. According to the invention, preferential erosion and disintegration of alkali metal oxides, halogen salts and the like on material particles are effectively resisted, so that erosion of a matrix and an aggregate is synchronous, and the overall service life can be prolonged as the refractory furnace lining of the hazardous waste incineration rotary kiln.
本发明属于耐火材料技术领域，主要涉及一种铬刚玉为骨料的Al2O3‑Cr2O3耐火制品。涉及的一种铬刚玉为骨料的Al2O3‑Cr2O3耐火制品包括骨料和基质；骨料为电熔Al2O3‑Cr2O3颗粒，骨料含量为原料总质量的55%～75%；基质中包含Al2O3‑Cr2O3细粉或可以形成Al2O3‑Cr2O3固溶体成分的一种或组合，基质中还加入有抗热震剂或助烧结剂；基质含量为原料总质量的25%～45%；骨料与基质经结合剂混合均匀后进行机压成型，干燥后烧成制品。本发明有效抵御了碱金属氧化物、卤素盐类等对于对材料颗粒部分的优先侵蚀和瓦解，使得基质和骨料的侵蚀同步，作为危废焚烧回转窑耐火炉衬可提高整体寿命。
Al2O3-Cr2O3 refractory product taking chrome corundum as aggregate
The invention belongs to the technical field of refractory materials, and mainly relates to an Al2O3-Cr2O3 refractory product taking chrome corundum as aggregate. The Al2O3-Cr2O3 refractory product taking the chrome corundum as the aggregate comprises the aggregate and a matrix, the aggregate is electric smelting Al2O3-Cr2O3 particles, and the content of the aggregate is 55%-75% of the total mass of the raw materials; the matrix comprises Al2O3-Cr2O3 fine powder or one or combination of components capable of forming an Al2O3-Cr2O3 solid solution, and a thermal shock resistant agent or a sintering aid is also added into the matrix; the content of the matrix is 25-45% of the total mass of the raw materials; the aggregate and the matrix are uniformly mixed by the binding agent and then are subjected to mechanical pressing, drying and sintering to obtain a product. According to the invention, preferential erosion and disintegration of alkali metal oxides, halogen salts and the like on material particles are effectively resisted, so that erosion of a matrix and an aggregate is synchronous, and the overall service life can be prolonged as the refractory furnace lining of the hazardous waste incineration rotary kiln.
本发明属于耐火材料技术领域，主要涉及一种铬刚玉为骨料的Al2O3‑Cr2O3耐火制品。涉及的一种铬刚玉为骨料的Al2O3‑Cr2O3耐火制品包括骨料和基质；骨料为电熔Al2O3‑Cr2O3颗粒，骨料含量为原料总质量的55%～75%；基质中包含Al2O3‑Cr2O3细粉或可以形成Al2O3‑Cr2O3固溶体成分的一种或组合，基质中还加入有抗热震剂或助烧结剂；基质含量为原料总质量的25%～45%；骨料与基质经结合剂混合均匀后进行机压成型，干燥后烧成制品。本发明有效抵御了碱金属氧化物、卤素盐类等对于对材料颗粒部分的优先侵蚀和瓦解，使得基质和骨料的侵蚀同步，作为危废焚烧回转窑耐火炉衬可提高整体寿命。
Al2O3-Cr2O3 refractory product taking chrome corundum as aggregate
一种铬刚玉为骨料的Al2O3-Cr2O3耐火制品
DU YIHAO (author) / SUN HONGGANG (author) / WEI YI (author) / SHANG XINLIAN (author) / HUANG ZHILIN (author) / XIA MIAO (author) / CAO YINGNAN (author) / WU YUNPENG (author)
2022-04-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Al2O3-Cr2O3 refractory aggregate and preparation method thereof
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