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Magnesium aluminate spinel synthesized by sintering waste magnesia-alumina brick powder and preparation method thereof
The invention discloses magnesia-alumina spinel synthesized by sintering waste magnesia-alumina brick powder and a preparation method of the magnesia-alumina spinel. The magnesium aluminate spinel with the mass percentage content of Al2O3 being 60-70% is used as a standard, and the magnesium aluminate spinel is prepared from 30-50 wt% of raw material waste magnesium aluminate brick powder, 50-65 wt% of industrial alumina powder and 0-5 wt% of raw alumina powder. The preparation method comprises the following steps: firstly, weighing various raw materials according to the raw material ratio of the magnesium aluminate spinel, and then mixing and co-grinding the various raw materials to obtain mixed and ground powder; putting the mixed fine powder into a mold to form a mixed blank; and finally, firing, and cooling to obtain the product solid magnesium aluminate spinel. By regulating and controlling the ratio and firing temperature of different waste magnesia-alumina brick powder, industrial alumina and raw alumina powder, the production cost is reduced while the thermal shock stability, erosion resistance and other properties are ensured, an efficient method is provided for recycling of the waste magnesia-alumina brick, and environmental protection is facilitated. Therefore, the method has remarkable economic benefits and social benefits.
本发明公开了一种利用废镁铝砖粉烧结合成的镁铝尖晶石及其制备方法。以制备Al2O3质量百分含量为60～70％的镁铝尖晶石为基准，所述镁铝尖晶石由原料废镁铝砖粉30～50wt％、工业氧化铝粉50～65wt％和生矾土粉0～5％组成。首先按照镁铝尖晶石的原料配比称取各种原料，然后将各种原料混合共磨，得到混磨细料；所得混磨细粉置入模具中成型为混合坯料；最后进行烧成，烧成后冷却得到产品固态镁铝尖晶石。本发明通过调控不同废镁铝砖粉、工业氧化铝、生矾土粉的配比以及烧成温度，在保证热震稳定性、抗侵蚀等性能的同时降低了生产成本，为废镁铝砖的再利用提供了一种高效方法，有利于环保。因此，具有显著的经济效益和社会效益。
Magnesium aluminate spinel synthesized by sintering waste magnesia-alumina brick powder and preparation method thereof
The invention discloses magnesia-alumina spinel synthesized by sintering waste magnesia-alumina brick powder and a preparation method of the magnesia-alumina spinel. The magnesium aluminate spinel with the mass percentage content of Al2O3 being 60-70% is used as a standard, and the magnesium aluminate spinel is prepared from 30-50 wt% of raw material waste magnesium aluminate brick powder, 50-65 wt% of industrial alumina powder and 0-5 wt% of raw alumina powder. The preparation method comprises the following steps: firstly, weighing various raw materials according to the raw material ratio of the magnesium aluminate spinel, and then mixing and co-grinding the various raw materials to obtain mixed and ground powder; putting the mixed fine powder into a mold to form a mixed blank; and finally, firing, and cooling to obtain the product solid magnesium aluminate spinel. By regulating and controlling the ratio and firing temperature of different waste magnesia-alumina brick powder, industrial alumina and raw alumina powder, the production cost is reduced while the thermal shock stability, erosion resistance and other properties are ensured, an efficient method is provided for recycling of the waste magnesia-alumina brick, and environmental protection is facilitated. Therefore, the method has remarkable economic benefits and social benefits.
本发明公开了一种利用废镁铝砖粉烧结合成的镁铝尖晶石及其制备方法。以制备Al2O3质量百分含量为60～70％的镁铝尖晶石为基准，所述镁铝尖晶石由原料废镁铝砖粉30～50wt％、工业氧化铝粉50～65wt％和生矾土粉0～5％组成。首先按照镁铝尖晶石的原料配比称取各种原料，然后将各种原料混合共磨，得到混磨细料；所得混磨细粉置入模具中成型为混合坯料；最后进行烧成，烧成后冷却得到产品固态镁铝尖晶石。本发明通过调控不同废镁铝砖粉、工业氧化铝、生矾土粉的配比以及烧成温度，在保证热震稳定性、抗侵蚀等性能的同时降低了生产成本，为废镁铝砖的再利用提供了一种高效方法，有利于环保。因此，具有显著的经济效益和社会效益。
Magnesium aluminate spinel synthesized by sintering waste magnesia-alumina brick powder and preparation method thereof
一种利用废镁铝砖粉烧结合成的镁铝尖晶石及其制备方法
KANG JIAN (author) / MA SHULONG (author) / WANG HAOJIE (author) / MA FEI (author) / ZHANG JILI (author) / GAO CHANGHE (author) / ZHOU XINGONG (author) / NI GAOJIN (author) / ZHANG HAIBO (author)
2022-04-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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