某原生金矿的工艺矿物学研究

利用X线衍射仪和电子探针研究了某原生金矿的矿物组成、嵌布特征、矿物单体解离度以及金在矿物中的赋存状态,所提供的与该矿石选矿工艺有关的工艺矿物学资料对拟定合理的工艺参数是必要和有用的。     

高炉增加高铝铁矿冶炼的可行性探讨

介绍了Al2O3对高炉炉渣和烧结矿的影响作用,分析认为,高炉终渣中Al2O3含量增至175,高炉冶炼仍是可行的。合理配料,改进工艺,可克服原料中Al2O3的提高对烧结带来的负面效应。     

基于神经网络的混匀配料优化方法

动用神经优化网络对武钢工业的混匀配料进行了优化计算,计算结果证明是切实可行的,而且比传统的计算方法速度快、精确度高,为混匀配料提供了必要的定量依据。基于神经网络的优化计算也为以后类似问题的优化计算提供了新的途径和方法。     

稀土铁矿尘中钍含量的测定

本文报道了一种稀土铁矿尘样品中钍含量的测定方法。用 CL-TBP 萃淋树脂和743阳离子交换树脂分离、纯化钍,电沉积制源,然后进行α谱测量。本方法的全程回收率为94.3±3.2%,对铀和其他α核素具有较好的分离效果,方法的精密度和准确度较好。用本方法测定了部分稀土铁矿尘样品中钍的含量。     

梅山选矿降磷工艺研究及应用

叙述了梅山铁矿石的主要矿物工艺矿物学特征、磷赋存状态及嵌布特征。通过工艺研究，最后选择了弱磁--强磁降磷工艺，并成功应用。结合应用实践，提出了加强工艺管理、控制磷品位、开发研究适合梅山应用的强磁机新型棒介质的建议。     

Prediction of mineral liberation characteristics of comminuted particles of high grade ores

In mineral processing, the liberation of valuable mineral is of key importance in achieving high recoveries from downstream separation processes such as froth flotation and gravity concentration. To quantify mineral liberation, information on ore texture of the parent rock as well as properties of comminuted particles is essential. These properties have been quantified by statistical measures such as the proximity function and covariance function, which were extracted from SEM images of parent rock and particle polished sections, using convenient and efficient image analysis techniques based on Labview™ software. To quantify fully liberated particles, a phase specific line segment function has been introduced and evaluated by placing random line segments on the image. It was also found that the ore texture assumptions made by Barbery are not valid for the high grade sulphide ore tested and the general applicability of these assumptions is therefore questionable. Using the measured information above, predictive liberation models to quantify volumetric grade distribution of particles in 1D and 3D have been developed based on Barbery’s work. Results show that the grade distributions of composite particles predicted from the proposed 1D model is closest to measured data than those of Barbery’s 1D model. The predictions using the proposed 3D model are similar to those predicted from Barbery’s model and are considered more realistic as the model does not rely on assumed ore texture but on measurements made on the parent rock and particle sections.     

Petrographical,Mineralogical, and Geochemical Studies on Core-samples From Sidi Salim-1 Well,Nile Delta,Egypt

Abstract

Core samples of sandstone and clay raised from the Neogene succession of Sidi Salim-1 well were petrographically, mineralogically, and geochemically studied with the objective of determining the depositional conditions.

The sandstone is composed of quartz, feldspars of which the deeper sands of Qawasim Formation show some alteration; with rock fragments of volcanic, metamorphic, and sedimentary origin, in addition to altered biotite. These components are embedded in amorphous pyrite, microcrystalline calcite, and primary dolomite, as well as partial cementation by gypsum (mainly in the Pliocene sands).

The clays are composed primarily of montmorillonite, kaolinite, and illite. These clays were provided from mafic igneous rocks, sedimentary rocks, and intermediate igneous rocks, and were deposited under reducing conditions in a brackish lagoon intermittently receiving varying amounts of fresh water.     

胶东乳山金矿金青顶矿区黄铁矿热电性研究

金青顶金矿黄铁矿α值离散性较大。Ｐ型黄铁矿出现率为８１．３％。导型组合在早成矿期Ⅰ－ｌ→Ⅰ－４阶段的变化是：Ｐ＞Ｎ→Ｐ》Ｎ→Ｐ》Ｎ→Ｐ＞Ｎ；在晚成矿期Ⅱ－２→Ⅱ－３阶段的变化为Ｐ＜Ｎ→Ｐ》Ｎ。在矿化地段，由上而下，αｐ减小，αＮ增大；Ｐ％减小，Ｎ％增大。其影响因素主要为黄铁矿中Ｃｏ，Ｎｉ，Ａｓ，Ｓｂ，Ｔｅ的含量，其次为结晶温度。用黄铁矿导型和αｐ均值所作矿物学填图反映的结果基本一致，从中可以取得有关黄铁矿形成温度，矿床剥蚀程度，矿体特征，深部远景和控矿构造等标型信息。     

红舍克堆积型铝土矿的工艺矿物学研究

以云南红舍克堆积型铝土矿为研究对象开展工艺矿物学研究工作。运用多元素分析、X-射线衍射分析、扫描电镜和MLA等手段,研究该堆积型铝土矿的化学组成、主要矿物组成、粒度组成、嵌布特征及矿物单体解离等工艺性质。结果表明,原矿中主要目的矿物为一水软铝石、硬水铝石、三水铝石,主要脉石矿物为高岭石,其他金属矿物为赤(褐)铁矿和锐钛矿。该研究可作为此铝土矿合理开发利用的理论基础。     

赣南某红土镍矿工艺矿物学研究及选矿方案论证

为了查清矿石性质,制定合理的选矿方案,本研究采用荷兰PHILIPS XL300型扫描电镜(SEM)、电子探针、电子显微镜等先进测试仪器对赣南某红土镍矿进行了详细的工艺矿物学研究,研究表明,该矿石矿物组成复杂,矿物种类繁多,其中镍矿物多呈分散状态分布于钴镍蛇纹石、含钴镍磁铁矿、含镍铬铁矿中,独立镍矿物仅有红砷镍矿、斜方砷镍矿,含量甚微,且粒度很细,不能用机械选矿方法予以富集,只能采用化学选矿或冶炼富集方法来提取镍,综合分析提出采用酸浸工艺进行提镍.