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柱上結晶利用物质的液相和气相对流平衡的原理可以把两种沸点不同的混合物分开,这种分离通常在分餾柱中进行。从此类推,利用结晶相和熔融相的在一定溫度下的对流平衡也应该可能把两种熔点不同的混合物分离,这种分离最近利用结晶柱得到实现。结晶柱的主要要求是保证生成的结晶有非常小的颗粒并且結晶体和熔融体能够充分对流,它由两个直径不同的玻璃管做成,小管外壁裝有带式攪拌叶,放在大管中,由馬达带动旋轉。大管外壁中间主要部分很好地保溫,下面一小段纏电炉丝加热,上面一小段不保
The principle of column crystallization, which utilizes the balance of the liquid phase and the vapor phase of a substance, separates two mixtures of different boiling points, usually in a fractionation column. By analogy, it should also be possible to separate two mixtures of different melting points by convection equilibrium at a certain temperature using the crystalline phase and the melt phase, which has recently been achieved with a crystallization column. The main requirements of the crystallization column is to ensure that the resulting crystals have very small particles and the crystals and the melt can be fully convection, which is made of two different diameter glass tube, the outer wall of the tube equipped with ribbon stirring blade, placed in the tube In the motor driven rotation. The main part of the outer wall of the outer tube is well insulated, the following a small section of wire heated stove, the above paragraph does not guarantee