重庆南川区大佛岩铝土矿床有益元素分布特征及可利用性评价  

Distribution Characteristics and Availability Evaluation of Beneficial Elements in Dafoyan Bauxite Deposit,Nanchuan District,Chongqing

作　　者：高原 熊亮 张宇 李良林 黄培培 徐厚倜[3] 栾进华 Gao Yuan;Xiong Liang;Zhang Yu;Li Lianglin;Huang Peipei;Xu Houti;Luan Jinhua(Chongqing Institute of Geology and Mineral Resources(Chongqing Key Laboratory of Major Geological Events and Effects of Resources and the Environment),Chongqing 401120,China;Chongqing Huadi Resources and Environment Technology Co.,Ltd.,Chongqing 401120,China;The 11th Geological Brigade of Zhejiang Province,Wenzhou 325006,Zhejiang,China)

机构地区：[1]重庆地质矿产研究院(重大地质事件资源环境效应重庆市重点实验室),重庆401120 [2]重庆华地资环科技有限公司,重庆401120 [3]浙江省第十一地质大队,浙江温州325006

出　　处：《吉林大学学报（地球科学版）》2024年第4期1199-1223,共25页Journal of Jilin University：Earth Science Edition

基　　金：重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX1375)。

摘　　要：为了理清重庆市南川区大佛岩铝土矿床有益组分分布特征及伴生元素可利用性,本文通过剖面测量、实地调查和样品分析等工作方法,对南川区大佛岩铝土矿床及其伴生元素的分布特征进行了深入研究,并建立了矿产资源可利用性评价模型。Ga质量分数高值区呈北东向和近南北向分布,中西部Ga质量分数高,北东部Ga质量分数较低。Li质量分数在梁山组中上部最高,最高为致密状铝土矿,其次为铝土岩,土状铝土矿中较低。Li的富集与铝土岩的关系较为密切。稀土元素的富集部位更容易出现于赋矿地层底部。评价模型对矿区铝土矿资源的评价结果为可利用。在开发利用铝土矿资源的过程中,可以考虑回收利用Ga元素。但是,由于Li、Sc、REE元素受到选冶技术和选矿成本等因素的限制,现阶段回收利用技术上虽然可行,但经济性存在瓶颈。因此,在开发利用铝土矿资源的同时,还需要探索更经济的回收利用技术,以提高资源的利用率。本文所建立的评价模型结合了评价指标体系,可为铝土矿资源的利用和评价提供科学参考,同时也为其他矿产资源的评价提供借鉴。当然,对于评价指标的选择和权重的确定需要根据不同的矿产资源和应用场景进行调整、优化,才能更好地满足实际需求。A detailed investigation of the Dafoyan bauxite deposit in Nanchuan District,Chongqing,was conducted to assess the distribution of beneficial components and associated elements.The study established a mineral resource availability evaluation model based on field investigations and sample analyses.High Ga quality scores are distributed in a northeast and nearly north-south direction,with higher Ga in the central and western regions and lower Ga in the northeast and eastern regions.The Li mass fraction is highest in the upper part of the Liangshan Formation,dense bauxite having the highest,followed by bauxite rock,and lower in soil bauxite.The enrichment of Li is closely related to bauxite.The enrichment sites of rare earth elements are more likely to occur at the bottom of the ore bearing strata.The evaluation model shows that bauxite resources in the mining area are exploitable.In developing and utilizing bauxite resources,the recovery and utilization of Ga elements can be considered.However,limitations in Li,Sc,and REE elements caused by factors such as beneficiation technology and beneficiation costs pose economic bottlenecks,despite the feasibility of current recycling technology.Therefore,alongside developing and utilizing bauxite resources,exploring more cost-effective recycling and utilization technologies is crucial to improve resource utilization efficiency.This evaluation model,with an an index system,can provide scientific guidance for bauxite resource utilization and evaluation,as well as for the evaluation of other mineral resources.Adjusting and optimizing evaluation indicators and weights according to specific mineral resources and scenarios is necessary to better serve practical needs.

关 键 词：铝土矿 有益元素 伴生元素 评价模型 可利用性 大佛岩铝土矿床 

分 类 号：P595[天文地球—地球化学] P618.42[天文地球—地质学]