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通过光学显微镜、X射线衍射分析、扫描电子显微镜和化学物相分析等多种研究手段对印尼塔里阿布岛Ⅱ区铁矿石中锡的赋存状态进行研究,查明了铁矿石中的锡主要以独立矿物(锡石、黑硼锡铁矿、硼钙锡石、水镁锡矿及水锡石)和类质同象的形式存在。其中水镁锡矿和水锡石是磁铁矿内呈包裹体产出的黑硼锡铁矿、硼钙锡矿因磁铁矿氧化分解暴露,逐渐转化反应而成。综合研究发现,在目前经济技术条件下,研究区含锡铁矿石试图通过原矿石选别回收利用的可能性较低,但其磁选后的尾矿,通过重选可以使锡显著富集在重矿物产品中进行回收利用。
By using optical microscope, X-ray diffraction analysis, scanning electron microscopy and chemical phase analysis and other research methods to study the occurrence of tin in iron ore in Zone Ⅱ of Tarim Abu Island in Indonesia, Tin mainly exists in the form of independent minerals (cassiterite, black boron tin-iron ore, boron calcium cassiterite, water magnesium tin ore and cassiterite) and isomorphism. Among them, magnesia-tin and cassiterite are black boron-tin-iron ore that is inclusions in magnetite, and boron-calcium-tin ore is formed by the oxidative decomposition and exposure of magnetite. Comprehensive study found that under the current economic and technological conditions, the study area containing iron ore try to recover through the ore separation is less likely, but its tailings after magnetic separation, by re-election can make tin significant enrichment Recycled in heavy mineral products.