关键词: 时间序列, 相空间重构, 嵌入维数, 延迟时间, 局部预测

Abstract: The chaos theory is applied to the heap leaching process of uranium ores. The analysis on the data generated in the process showed that the heap leaching process of uranium has chaotic property. Based on this，several groups of multi-dimensional prediction analysis on the uranium extraction rate are made by using an new local forecasting method. It provides a new concept to establish a reasonable mathematical model in heap leaching process.

Key words: Time series, Phase space reconstruction, Embedding dimension, Delay time, Local forecast