产品等级 | 氧化铝 |
---|---|
含量 | 99(%) |
包装规格 | 50kg |
水中溶解物,% ≤0.5硅酸盐(SiO3) 合格碱金属及碱土金属,% ≤0.50重金属(以Pb计),% ≤0.005氯化物(Cl),% ≤0.01**盐(SO4),% ≤0.05灼烧失量,% ≤5.0铁(Fe),% ≤0.014主要成分氧化铝是将铝矾土原料经过化学处理,除去硅、铁、钛等的氧化物而制得,是纯度很高的氧化铝原料,Al????????O????????含量一般在99%以上。矿相是由40%~76%的γ- Al????????O????????和24%~60%的α- Al????????O????????组成。γ- Al????????O????????于950~1200℃可转变为α- Al????????O????????(刚玉),同时发生显著的体积收缩。含有元素铝和氧化学性质和酸反应Al????????O???????? + 6HCL == 2AlCl3 + 3H????????OAl????????O???????? + 6H+ == 2Al3+ + 3H????????O和碱反应Al????????O???????? + 2NaOH == 2NaAlO???????? + H????????OAl????????O???????? + 2OH- == 2AlO????????- + H????????O..................................................................................................................................................................................................................................................................................................................................................................................................................
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