主要是通过处理砷黄铁矿,黄铁矿,磁黄铁矿及黄铜矿等硫化矿所包裹的微细粒金(-50um范围),采用传统的氰化法,直接浸出率一般在50%以下,通过细菌氧化技术破坏包裹,使矿物中的金得以暴露,再用氰化法处理,可使浸出率达到96%以上。
介绍了难浸金矿用焙烧法、加压氧化法和细菌氧化法预处理的原理、工业实践及几种方法的技术经济比较。
The paper introduces the principle, industrial practice and comparison of technical economy to pretreat refractory gold mineral through roasting, pressure and bacterial oxidation.
目前对高砷硫金矿的预处理方法主要有氧化焙烧法、加压氧化法、细菌氧化法、硝酸分解法、真空脱砷法等。
There are many ways of pretreatment to high arsenic gold concentrate such as roasting, pressure oxidation, bacterium oxidation, decomposition by nitric acid, eliminating arsenic in vacuum, etc.
细菌浸出法是利用某些微生物及其氧化产物溶浸矿石中的有用金属的一种新工艺。
Bioleaching is a new technology using microorganism and its oxidizing product to leach useful metals.
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