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Research on fused magnesia-aluminum-iron spinel process

2021-08-19 02:09:31
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The dried fused magnesia-alumina bricks and forsterite composite bricks were put into a high-temperature furnace, heated to 1550°C, and then kept for 5 hours for firing treatment. Calcined dolomite performance The fused magnesia-alumina brick and the forsterite composite brick are made. After cooling, take out and take pictures, and then test. At different temperatures of 1500 ℃ and 1550 ℃, the linear change rate of fused magnesia-aluminum and forsterite composite bricks after firing. They are the composite brick samples of fused magnesia-alumina-iron spinel and forsterite bricks, and the composite brick samples of sintered magnesia-alumina-iron spinel and forsterite bricks, respectively. The firing temperature is 1550℃, the composite brick samples of fused magnesia-aluminum-iron spinel and forsterite bricks and the composite brick samples of sintered magnesia-aluminum-iron spinel and forsterite bricks. At the same sintering temperature, the linear change rate after burning of the composite brick of fused magnesia-aluminum-iron spinel and forsterite brick is lower than that of the composite brick of sintered fused magnesia-alumina and olivine brick.


Properties of Synthetic Sintered Magnesium-Calcium Sand


For the composite brick of magnesia-aluminum-iron spinel brick and olivine of the same material, the linear change rate increases with the increase of the firing temperature. The post-fire linear change rate of fused magnesia-aluminum and forsterite composite bricks at different sintering temperatures. Linear expansion of fused magnesia-alumina bricks and high-purity forsterite bricks Linear expansion of high-purity forsterite bricks and fused magnesia-alumina bricks. Thermal expansion curves of fused magnesia-iron-aluminum-iron spinel brick samples after firing. From room temperature to about 1500 ℃, the linear expansion rate gradually increases, and at about 1500 ℃, the linear expansion rate shows the highest value, and there is no obvious decrease. Therefore, the linear expansion rate of fused magnesia-alumina bricks from room temperature to 1500 ℃ is increasing steadily.


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