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Method for preparing refractory composite brick from waste refractory material
The invention relates to the field of refractory bricks, in particular to a method for preparing a refractory composite brick by using a waste refractory material, which comprises the following steps: crushing, grinding and sieving a waste refractory brick, and sequentially carrying out pre-magnetic separation and ultrasonic enhanced biological acid leaching to prepare a low-iron refractory brick green brick; the mullite whisker in-situ reinforced cordierite-mullite porous structure is introduced into the refractory brick by controlling the raw material ratio of the auxiliary agent, and the mullite whisker formed by coal gangue is in a needle shape by controlling the mixing amount of the coal gangue, so that an interlocking structure is formed; the yttrium-doped silicon organic framework is adopted to modify phenolic resin, and the introduction of the yttrium-doped silicon organic framework modified resin is beneficial to the structural densification of the phenolic resin and can effectively improve the generation of a high-silicon amorphous phase in the refractory brick, so that the alkali corrosion resistance of the refractory brick is improved; and yttrium oxide and titanium dioxide are formed after the yttrium-doped organic framework modified resin is sintered, so that the compactness and the wear resistance of the refractory brick are effectively improved.
本发明涉及耐火砖领域，具体是一种利用废旧耐火材料制备耐火复合砖的方法，将废旧耐火砖粉碎研磨过筛后，依次经过预磁选、超声波强化生物酸浸出，制备低铁耐火砖砖坯；通过控制助剂的原料配比，在耐火砖中引入莫来石晶须原位增强堇青石‑莫来石多孔结构，通过控制煤矸石掺量，使其形成的莫来石晶须呈针状，形成互锁结构；采用钇掺杂硅有机骨架对酚醛树脂进行改性处理，且钇掺杂有机骨架改性树脂的引入，有利于其结构致密化，能有效提高耐火砖中高硅非晶相的产生，从而提高耐火砖的抗碱侵蚀性能；且钇掺杂有机骨架改性树脂在烧结后形成的氧化钇、二氧化钛，有效提高耐火砖的致密度和耐磨性。
Method for preparing refractory composite brick from waste refractory material
The invention relates to the field of refractory bricks, in particular to a method for preparing a refractory composite brick by using a waste refractory material, which comprises the following steps: crushing, grinding and sieving a waste refractory brick, and sequentially carrying out pre-magnetic separation and ultrasonic enhanced biological acid leaching to prepare a low-iron refractory brick green brick; the mullite whisker in-situ reinforced cordierite-mullite porous structure is introduced into the refractory brick by controlling the raw material ratio of the auxiliary agent, and the mullite whisker formed by coal gangue is in a needle shape by controlling the mixing amount of the coal gangue, so that an interlocking structure is formed; the yttrium-doped silicon organic framework is adopted to modify phenolic resin, and the introduction of the yttrium-doped silicon organic framework modified resin is beneficial to the structural densification of the phenolic resin and can effectively improve the generation of a high-silicon amorphous phase in the refractory brick, so that the alkali corrosion resistance of the refractory brick is improved; and yttrium oxide and titanium dioxide are formed after the yttrium-doped organic framework modified resin is sintered, so that the compactness and the wear resistance of the refractory brick are effectively improved.
本发明涉及耐火砖领域，具体是一种利用废旧耐火材料制备耐火复合砖的方法，将废旧耐火砖粉碎研磨过筛后，依次经过预磁选、超声波强化生物酸浸出，制备低铁耐火砖砖坯；通过控制助剂的原料配比，在耐火砖中引入莫来石晶须原位增强堇青石‑莫来石多孔结构，通过控制煤矸石掺量，使其形成的莫来石晶须呈针状，形成互锁结构；采用钇掺杂硅有机骨架对酚醛树脂进行改性处理，且钇掺杂有机骨架改性树脂的引入，有利于其结构致密化，能有效提高耐火砖中高硅非晶相的产生，从而提高耐火砖的抗碱侵蚀性能；且钇掺杂有机骨架改性树脂在烧结后形成的氧化钇、二氧化钛，有效提高耐火砖的致密度和耐磨性。
Method for preparing refractory composite brick from waste refractory material
一种利用废旧耐火材料制备耐火复合砖的方法
ZHOU ZHIYU (author) / ZHOU JIANGUO (author) / QIAN XINYI (author)
2024-11-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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