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在氧化铝生产中,氢氧化铝焙烧工序决定着氧化铝产品质量的许多指标,特别是产品的物理性能,诸如比表面积、α-Al_2O_3含量、真比重、堆比重、安角、粒度组成等。根据铝电解对氧化铝物理性能的要求不同,生产上把氧化铝产品大致分成三种类型,即砂状氧化铝、粉状氧化铝和介于两者之间的中间状氧化铝。
In alumina production, aluminum hydroxide roasting process determines many indicators of the quality of alumina products, especially the physical properties of products such as specific surface area, α-Al 2 O 3 content, true specific gravity, bulk specific gravity, angle of attack, particle size composition and the like. According to the different requirements of aluminum electrolysis on the physical properties of alumina, the production of alumina products can be roughly divided into three types, namely, sand-like alumina, powdered alumina and intermediate alumina between the two.