金属离子在细菌浸取金属硫化矿中的催化作用

用氧化亚铁硫杆菌浸取某低品位原生硫化矿中Ｃｕ、Ｎｉ时，金属离子对细菌浸矿有明显的催化作用．金属离子（Ａｇ＋，Ｈｇ２＋，Ｃｏ２＋，Ｂｉ３＋）能显著提高细菌浸出Ｃｕ、Ｎｉ的浸出率．对细菌浸Ｃｕ而言，金属离子催化能力排序为：Ａｇ＋Ｃｏ２＋＞Ｂｉ３＋＞Ｈｇ２＋；对浸Ｎｉ，其排序则为：Ｂｉ３＋＞Ａｇ＋＞Ｃｏ２＋＞Ｈｇ２＋．金属离子的浓度、性质及矿石粒度等影响金属离子的催化能力．金属离子的催化作用机理与其性质。

用细菌从辉钼矿中浸出钼的探讨

以翔实的资料为基础,阐述了用细菌从辉钼矿中浸出钼的工艺流程。这在国内还是首次。对浸钼细菌的种类、来源、生态特征、采集、分离、驯化、浸出原理等方面,作了详细的介绍,为我国钼矿资料的开发利用,提供了一个新的有效方法。

无所不能的细菌

以往，人们通常把细菌描绘成可怕的魔鬼。一提起它，大家往往会联想到传播疾病、危害健康的元凶。其实，在细菌大家族里，并不是所有的细菌都在危害人类，亦有许多像“硫磺细菌”一样造益于人类的细菌。

微生物在铜矿溶浸开采中的应用

微生物浸矿技术开采低品位、复杂和难选铜矿 ,近几十年来 ,在很多国家和地区得到了应用和发展。阐述了铜矿溶浸开采中所用细菌的种类和培养方法 ,细菌浸出的机理 ,生物浸出过程数学模型和影响浸出的因素。

Heat transfer law in leaching dump

Based on the law of temperature changes in the leaching dump and the forming process of heat flux, the basic balance equation of heat flow in dump was established, the dissipated heat flow from dump to the atmosphere was analyzed to estimate the surface temperature of the ore particle in dump and discover the law of forced heat convection of heat flow transfer in dump. And the lixiviate flow formula taking a certain heat flow out of dump was deduced by using the inversion method. Through theoretic analysis, combining Dexing copper mine heap leaching production practice, the results show that the heat flow of chalcopyrite leaching emitted is not so great, but the heat flow of pyrite leaching and sulphur oxidation produced take up a higher proportion of total heat flow; the dissipated heat flow takes up a lower proportion, and most of heat flow is absorbed by itself, thus the inside temperature rises gradually; and the saturation flow form for leaching is adopted, which makes the lixiviate seepage in the transitional flow or even in the turbulent flow, so as to accelerate the heat flow diffusing and keep the leaching dump temperature suitable for bacteria living.

溶浸采矿的研究与实践

本文阐述了发展溶浸采矿新技术对开发利用低品位矿产资源的重大意义,介绍了溶浸采矿工艺,并对铜的模拟就地浸出试验和金的粉矿制粒——堆浸新工艺的研究与实践作了报导。