The branch crystal craft system to make tar naphthalene,has strongpoints of high efficiency,saving much energy,strong separation ability.

Fractional crystallization of a protolithionite granitic magma and the formation mechanism of albite granitic melt;

petrology suggested that fractional crystallization playcd a important rolc in Jijicalkaline-ultrabasic rock complex body emplacement.

Fractional crystallization and assimilation constrain lithological composition and fraction, and play a key role in the formation of intrusive complex.

5% by said fractional crystallization process.

The process of fractional crystallization of H_3B.

An easy method of rare earth separation—acid fractional crystallization was put forward.

From the beginning of the basic concept of fractional crystallization from the melt , some thermodynamic problems such as crystal structure, solid solution, nucleus forming and growing-up, have been discussed by means of bond parameters in combination with the thermodynamic data.

Coupled with the living examples of refining metal by fractional crystallization,the kinetic formula of fractional crystallization in the refining of metals were deduced according to the concepts of diffusion and effective coefficient of separation and criteria for the effective of fractional crystallization.

While preserving the advantages of the original Witten process for manufacturing DMT,an improved Witten process has been developed featuring the use of new reactors and advanced separation technology including mixed oxidation,mixed esterification,vacuum crystallization,special rectification and fractional crystallization.