Aqueous Precipitation and Crystallization for the Production of Particulate Solids with Desired Properties
Aqueous Precipitation and Crystallization for the Production of Particulate Solids with Desired Properties
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DOI：
10.1002/chin.201002227
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发表时间：
2009-04
期刊：
影响因子：
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通讯作者：
G. Demopoulos
中科院分区：
文献类型：
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作者：
G. Demopoulos
摘要 本文的范围是回顾和应用结晶动力学理论来分析和设计水性无机湿法冶金沉淀系统。特别强调了过饱和度在控制沉淀化合物的性质（结晶度稳定性、粒径和清洁度）方面的关键作用。所采用的方法具有通用性，并非针对特定系统；然而，提到了特定的沉淀系统，例如非常细的单分散颗粒的生产、酸性硫酸铁溶液的水解/中和、从锌加工溶液中沉淀铁、以结晶臭葱石形式固定砷以及废水处理中的石膏结晶。引用这些系统的目的不是为了描述各自的过程，而是为了加强工业无机沉淀过程的过饱和控制方法的有效性。
Abstract It is the scope of this paper to review and apply the theory of crystallization kinetics to the analysis and design of aqueous inorganic hydrometallurgical precipitation systems. In particular the critical role of supersaturation in controlling the properties (crystallinity–stability, particle size and cleanliness) of the precipitated compounds is emphasized. The approach taken is of generic nature and not system-specific; however, reference is made to particular precipitation systems such as production of very fine monodispersed particles, hydrolysis/neutralization of acidic ferric sulphate liquors, iron precipitation from zinc process solutions, immobilization of arsenic in the form of crystalline scorodite, and gypsum crystallization in waste water treatment. Reference to these systems is not made with the purpose of describing the respective processes but rather to reinforce the validity of the supersaturation-controlled approach to industrial inorganic precipitation processes.