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近年来老柞山金矿矿石性质发生变化，细粒金含量达到 ６０％以上，致使金的回收率偏低。通过采取改造磨矿分级工艺流程的结构、优化氰化浸出工艺条件等措施，使金的回收率由８０．５％提高到 ８４．９０％，每年可为矿山增加经济效益２００多万元。
In recent years, the properties of Laozuoshan Gold Mine have changed, with the content of fine-grained gold reaching more than 60%, resulting in a low gold recovery rate. By taking the steps of rebuilding the structure of grinding and grading process and optimizing the technological conditions of cyanidation leaching, the recovery rate of gold is increased from 80.5% to 84.90%, and the economic benefit of mine can be increased by more than 2 million yuan every year.