distillation drying 中文意思是什麼
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The optimum technic conditions have been gotten in in preparaing high dispersive a1 ( oh ) 3 colloid by controlling reactant concentration, ph value, reaction temperature, matured time. they are the prereguisite to prepare nanopoder of a - a1203. this paper entirely and systematically studies the following three kinds of drying stages : oven drying, dehydration with alcohols and azeotropic distillation stage
本文採用逐步逼近法進行了氫氧化鋁膠體的沉降實驗，對膠體形成的體系反應物的初始濃度、體系的ph值、反應溫度和膠體的陳化時間進行了系統優化，並獲得了制備高分散氫氧化鋁膠體的最佳工藝參數；此膠體經過過濾、 80下烘乾后所得樣品，在掃描電鏡下直接觀察其粒徑為50nm ，且分佈范圍窄，顆粒的表面清潔，為球形。 -
The results show that all of them have little different effect on the crystalline size of ultrafine powder of a - ahc ^, but they have greatly different effect on the secondary partical size. the azeotropic distillation is the most effective processing, it can prevent the formation of hard agglomerates and improve the sinter - ability of powder. the mechanism of drying stages preventing the formation of hard agglomerates has investigated
研究了三種不同的乾燥方法（直接乾燥法、酒精置換乾燥法和共沸蒸餾乾燥法）對粉體性能的影響。實驗表明三種乾燥方法對- al _ 2o _ 3粉體的一次粒徑的差別性影響不顯著，而對其二次粒徑的差別性影響則很顯著。
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