Abstract

An original mathematical model and a numerical method are proposed for describing the filtration combustion of porous metal-containing media taking into account the phase transformations of metal occurring in them (melting/crystallization and evaporation/condensation). The calculations of heterogeneous combustion of a cadmium-containing mixture have shown that, when a concurrent combustion wave propagates, the metal accumulates (its concentration increases) in the region before the reaction front. Thus, it has been shown that filtration combustion allows us to enrich a metal-containing substance effectively, increasing the concentration of rare metals in them tenfold.

中文翻译：

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过滤燃烧法从含金属材料中提取贵金属的过程建模

摘要

提出了一种原始的数学模型和一种数值方法来描述包含多孔金属的介质的过滤燃烧，其中考虑了其中发生的金属的相变（熔融/结晶和蒸发/冷凝）。含镉混合物的非均质燃烧计算表明，当同时燃烧波传播时，金属会在反应前沿之前的区域聚集（其浓度增加）。因此，已经表明，过滤燃烧使我们能够有效地富集含金属的物质，使其中的稀有金属的浓度增加十倍。