Ultrafine alumina powders were prepared by pyrolysis of the aluminium precursor powders obtained by precipitationmethod using aluminium nitrate and ammonium carbonate as raw materials.
以硝酸铝为原料，碳酸铵为沉淀剂，合成前驱体碳酸铝铵，然后煅烧得到纳米级氧化铝粉体。
2
Two kinds of methods for the regeneration of magnesium nitrate solution are discussed, which are precipitationmethod and filter-press method.