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Citation: Zhang Li-Qing, Liu Su-Lan, Zhu Jian-Xin, Yao Shu-Hua, Xie Ying. Crystallization Dynamics of MgSO₄-H₃BO₃-H₂O System under Hydrothermal Condition[J]. Acta Physico-Chimica Sinica, ;2000, 16(05): 468-471. doi: 10.3866/PKU.WHXB20000519 shu

Crystallization Dynamics of MgSO₄-H₃BO₃-H₂O System under Hydrothermal Condition

1.
Shenyang Institute of Chemical Technology,Shenyang 110021

Received Date: 26 July 1999
Available Online: 15 May 2000

The solution of MgSO4-H3BO3-H2O system containing 20%(mass fraction)MgSO4 and 2.5% H 3BO 3 was prepared and the experimental study of its crystallization at 180℃ were carried out in a high pressured vessel. Only a solid phase MgSO4•H2O was separated out from the system. The experimetal data were fitted. With the aid of simplex optimum method and Runge-Kutta digital solution of a set of differential equations, Single-nuclear interface reaction model (MB2) was selected to describe the process of crystallization of kieserite. the dynamic equation is as follows:
-dc/dt=0.064(2.24-c) 4/3 (c-0.290)2
- Kieserite,
- Dynamic,
- High temperture crystallization,
- Boric acid
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Crystallization Dynamics of MgSO4-H3BO3-H2O System under Hydrothermal Condition

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通讯作者: 陈斌, bchen63@163.com

Crystallization Dynamics of MgSO₄-H₃BO₃-H₂O System under Hydrothermal Condition