Research on fused magnesia-aluminum-iron spinel process

The dried magnesia-iron-aluminum spinel bricks and the green forsterite composite bricks are put into a high-temperature furnace, fused magnesia-aluminum, heated to 1550°C, and kept for 5 hours for firing treatment. A magnesia-iron-aluminum spinel brick and a forsterite composite brick are made, which are taken out after cooling and photographed, and then tested. Ordinary fused magnesia, at different temperatures of 1500 ℃ and 1550 ℃, the line change rate of magnesia-iron-aluminum spinel and forsterite composite brick after burning. 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 post-fire line change rate of fused magnesia-aluminum-iron spinel and forsterite brick composite bricks is lower than that of sintered magnesia-aluminum-aluminum spinel and olivine brick composite bricks. Rate. Fused aluminum chrome sand

Fused aluminum chrome 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 magnesia-iron-aluminum spinel and forsterite composite bricks at different sintering temperatures. Linear expansion of magnesia-iron-aluminum spinel bricks and high-purity forsterite bricks Linear expansion of high-purity forsterite bricks and magnesia-iron-aluminum spinel 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 a large value, and there is no obvious decrease. Therefore, the linear expansion rate of fused magnesia-iron-aluminum spinel bricks increases steadily from room temperature to 1500 °C.