景德镇焦元坞陶土（紫砂）矿床特征和矿石利用

发布时间：2018-04-17 20:34

本文选题：紫砂(陶土)矿 + 矿床学特征　；参考：《南京大学》2016年硕士论文

【摘要】：紫砂陶土是独具中国特色的非金属矿,随着中国经济的高速发展和对紫砂陶器的需求激增,紫砂矿资源日趋枯竭,寻找接替资源成为陶土矿勘探的重点工作之一。本文在景德镇焦元坞地区开展了系统的找矿和矿石分析工作,以焦元坞陶土(紫砂)矿为研究对象,运用沉积学、矿床学和粘土矿物学基本理论,采用资料调研、野外研究和岩矿分析等手段,确定了陶土矿的分布范围、找矿标志,并进一步研究了陶土矿的矿床地质特征、矿石矿物质组成和加工利用性能。焦元坞陶土(紫砂)矿区位于乐平—歙县构造混杂岩亚带北西侧陆相红盆地内。盆地基底为中元古代变质岩,陆相红盆地由三叠系上统—侏罗系下统多江组曲流河相碎屑岩、侏罗系林山群漳平组、水北组河湖相碎屑岩组成。矿区脆性断裂发育,褶皱构造不明显。紫砂矿体岩性为紫红色粉砂质泥岩、泥质粉砂岩,呈层状产于漳平组中部；矿石以泥铁质含量高、白云母碎屑少为特点,矿层底部常可见灰白色钙质结核,地表风化后呈灰黄色泥质斑点。对陶土矿石进行X射线衍射分析、扫描电镜及能谱分析表明：矿石中粉砂碎屑以石英、长石为主,粘土矿物以伊利石为主,绿泥石次之,个别样品检出少量蒙脱石；矿石中普遍含有微晶赤铁矿,多在碎屑矿物表面赋存。矿体围岩虽具有相似的岩性,但绿泥石含量明显偏高,反映陶土矿形成的沉积条件与围岩存在较明显差异,至少物源有显著不同。本文还对矿区陶土矿的工艺利用性能进行了评价,选取陶土烧制的成品进行了初步分析。结果表明矿区陶土具有优良的陶瓷工艺性能,能够满足烧制紫砂产品的各项技术要求,不仅能够用于生产日用紫砂陶瓷,还可用于生产紫砂雕塑等产品,具有广阔的应用领域和开发利用前景。
[Abstract]:Purple clay is a unique non-metallic mine with Chinese characteristics. With the rapid development of China's economy and the sharp increase in demand for purple sand pottery, the purple sand ore resources are increasingly depleted, so finding replacement resources has become one of the key tasks in the exploration of clay ore.In this paper, a systematic ore prospecting and ore analysis work has been carried out in Jiayuanwu area of Jingdezhen. Taking the Jiaoyuanwu clay (purple sand) deposit as the research object, the basic theories of sedimentology, mineralogy and clay mineralogy are used, and the data are investigated.By means of field study and rock ore analysis, the distribution range and prospecting mark of clay ore are determined, and the geological characteristics of ore deposit, mineral composition of ore and processing and utilization performance of clay ore are further studied.Jiaoyuanwu pottery (purple sand) mining area is located in the western continental red basin of Leping-Shexian structural melange subbelt.The basement of the basin is Mesoproterozoic metamorphic rock, and the continental red basin is composed of Triassic Upper Permian-Lower Jurassic Duojiang Suiqu River facies clastic rock, Jurassic Linshan Group Zhangping formation, Shuibei formation river and lacustrine clastic rock.Brittleness fault developed in mining area and fold structure was not obvious.The lithology of the purple sand ore body is purplish red silty mudstone and argillaceous siltstone, which occurs in the middle of Zhangping formation. The ore is characterized by high content of mud and iron, less Muscovite clastic, and gray-white calcium nodules are often found at the bottom of the ore bed.After weathering, the surface shows grayish yellow muddy spots.The X-ray diffraction analysis of clay ore shows that quartz, feldspar, Illite, chlorite and montmorillonite are the main components of silt and feldspar in the ore, and a small amount of montmorillonite is detected in some samples.Microcrystalline hematite is commonly found in ores, most of which occur on the surface of clastic minerals.Although the surrounding rock of ore body has similar lithology, the content of chlorite is obviously high, which indicates that the sedimentary conditions of clay ore formation are obviously different from that of surrounding rock, at least the material source is obviously different.This paper also evaluates the process utilization performance of the clay ore in mining area, and selects the finished product of ceramic clay to carry on the preliminary analysis.The results show that the ceramic clay in mining area has excellent ceramic technological properties and can meet the technical requirements of firing purple sand products. It can not only be used to produce daily purple sand ceramics, but also can be used to produce purple sand sculptures and other products.It has broad application field and prospect of development and utilization.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P619.23;TD985

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