【作者】 袁爱国；

【导师】 邓军；

【作者基本信息】 中国地质大学（北京） ， 资源产业经济， 2010， 博士

【摘要】 河南铝土矿资源分布较广,铝工业较为发达;探索河南省铝土矿的资源分布的地质背景、控制因素以及预测方法,研究资源开发的现状以及问题,对河南铝土矿的进一步勘探与开发具有重要指导意义。本文首先探讨了河南铝工业的基本现状与存在问题;详细研究了矿床地质特征,分析了矿石矿物以及地球化学组成特征,解析了区域成矿规律及控矿要素,初步探索铝土矿的地球化学分散模式及区域成矿潜力;最后探讨了勘探—开发中策略性问题。论文取得的主要认识包括:(1)解析了区域成矿规律与控制因素。成矿前构造的总体特点为:东南高、西北低的整体地势,多级隆凹相间的主体地形;受地形影响,将晚石炭世的沉积由东北向西南依次划分为三个相区,即滨-浅海相→滨海相→滨岸相。根据对区域不同矿带的层序观测,含矿岩系层序内部主体包括两个沉积旋回,代表铝土矿层由两次海侵事件所形成。(2)系统处理了研究区内的土壤深层、土壤浅层及水系沉积物地球化学数据,分析了铝土矿的地球化学分散模式,使地球化学异常可以作为铝土矿的预测标志。联合岩相古地理、地形地貌、地球化学异常等多方面数据,采用证据权法,初步分析了区域铝土矿成矿潜力空间分布。(3)分析了铝土矿矿产资源开发与利用中存在的问题,包括保有储量不足、规模化开发不足、铝产品回收率低、共伴生矿产利用不足等几大问题。提出了煤铝联合勘探、大规模勘探与矿业权集中转让、提高铝土矿综合利用与回收水平等有效发展策略。更多还原

【Abstract】 Distribution of bauxite resources and the aluminum industry in Henan are much developed. To explore the resources of bauxite in Henan Province of the geological background, control factors and the prediction method to study the current status of bauxite resources development issues in Henan and is more important to further exploration and development. This paper discusses the basic status of the aluminum industry in Henan and problems; detailed study of the geological characteristics of the ore deposits, ore minerals and geochemical compositions, analysis of the regional metallogeny and ore-controlling factors, the initial exploration of the geochemical dispersion pattern of bauxite and regional metallogenic potential; finally, we discuss strategic issues of the exploration and development. The main knowledge including:(1) Analysis of the regional metallogeny and controlling factors. The pre-ore structure is general characterized by: southeast is higher than northwest of the overall topography, multi-level phase of the main concave terrain; influenced by topographic effects, the Late Carboniferous sedimentary sequence from the northeast to the southwest area is divided into three phases, i.e., littoral-shallow phase→littoral phase→coastal phase. Based on the sequence region observed different belt, the ore rocks within the main sequence includes a number of sediment cycles, on behalf of bauxite layer by the formation of two transgressive events.(2) Based on the geochemical data in the deep soils, shallow soils and stream sediments, geochemical disperse model for the bauxite is analyzed, so that geochemical anomalies can be used as predictors of bauxite. Combining lithofacies palaeogeography, topography, geochemical anomalies and other aspects of data, using weights of evidence, a preliminary analysis of the potential of the regional distribution of bauxite ore is carried out.(3) The problems in the development and utilization of bauxite resources, including inadequate reserves, small scale of development, low recovery rate of aluminum products, lack of associated minerals are proposed. Made of aluminum and coal prospecting, exploration and mining rights focus on large-scale transfer, utilization and recycling to improve the level of bauxite and effective development strategy.更多还原