首页> 外文会议>Symposium on Sulfide Smelting 2002, Feb 17-21, 2002, Seattle, Washington >ONLINE PREDICTION OF THE ACTUAL MELT CHEMISTRY IN AN AUSMELT CONVERTER USING A THERMODYNAMIC - SYSTEM IDENTIFICATION HYBRID MODELING TECHNIQUE
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ONLINE PREDICTION OF THE ACTUAL MELT CHEMISTRY IN AN AUSMELT CONVERTER USING A THERMODYNAMIC - SYSTEM IDENTIFICATION HYBRID MODELING TECHNIQUE

机译:热力学系统识别混合建模技术在线预测AUSMELT换热器中的熔体化学性质。

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Lance based copper-nickel matte converters have become an established technology in the field of base metal sulphide smelting and converting. An Ausmelt? converter is currently being constructed at Anglo Platinum in South Africa to convert a nickel-copper rich matte containing platinum group metals (PGM's). The accurate prediction of the matte chemistry is required to control the composition at the endpoint which influences segregation of PGM's during the subsequent slow cooling and magnetic separation processes. A hybrid modelling approach is introduced in this paper that incorporates both the effect of thermochemistry and system dynamics. It will be shown how the model relates to fundamental conservation laws, while still providing enough flexibility to adapt to changing operating conditions. It will also show how off-line modelling can be incorporated into a robust on-line model. Based on the data from many pilot plant trials, the model prediction performance is shown to be within the accuracy requirement set by industry and therefore constitutes a reliable basis for model based control. The final generic model structure takes on the form of an thermodynamically integrated ARMAX hybrid model. The final model has the advantages of being dynamic, adaptive, robust and it can be related to thermochemical fundamentals.
机译:基于喷枪的铜-镍无光泽转炉已成为贱金属硫化物冶炼和转炉领域的一项成熟技术。奥斯梅尔特?目前,南非的盎格鲁铂金公司正在建造转炉,以加工出富含铂族金属(PGM)的富镍铜哑光。需要精确预测无光泽的化学成分,以控制终点处的成分,从而影响随后的缓慢冷却和磁分离过程中PGM的离析。本文介绍了一种混合建模方法,该方法结合了热化学作用和系统动力学。将说明该模型如何与基本养护法则相关,同时仍提供足够的灵活性以适应不断变化的工作条件。它还将说明如何将离线建模合并到健壮的在线模型中。基于许多中试工厂试验的数据,模型预测性能显示在行业设定的精度要求之内,因此构成了基于模型的控制的可靠基础。最终的通用模型结构采用热力学集成的ARMAX混合模型的形式。最终模型具有动态,自适应,鲁棒性的优点,并且可以与热化学基础有关。

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