湘潭海泡石矿物学特征及提纯产物加工试验研究  

Study on Mineralogical Characteristics and Product Influencing Factors of Xiangtan Sepiolite

作　　者：侯凯[1,2] 姚顺 张俊华 唐爱东 杨华明[1] 王帅[2] HOU Kai;YAO Shun;ZHANG Junhua;TANG Aidong;YANG Huaming;WANG Shuai(Central South University,The School of Minerals Processing and Bioengineering,Changsha 410083,China;College of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024,China;College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China)

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083 [2]太原理工大学矿业工程学院,太原030024 [3]中南大学化学化工学院,长沙410083

出　　处：《有色金属（选矿部分）》2024年第3期23-30,54,共9页Nonferrous Metals（Mineral Processing Section）

基　　金：国家自然科学青年基金项目(52104261);山西省基础研究计划项目(20210302124223);山西省留学基金委资助课题(2021-042)。

摘　　要：为实现该海泡石矿资源的高效开发利用,采用化学多元素分析、粒度分析、光学显微镜分析、扫描电子显微镜分析等方法,进行了详细的矿物特性研究,并探究了海泡石选矿与应用建议。结果表明,随着矿物粒度的降低,海泡石含量增加。方解石和石英呈颗粒状,海泡石呈束状集合体分布,且与其他矿物结合紧密。针对矿石性质,确定了“筛分-化学分散-高速分散-分离”的原则工艺流程,选用最优参数:pH值为9,分散剂为0.8 g/L的焦磷酸钠,高速分散机分散20 min,转速为2 000 r/min;并且对矿石干燥和磨矿进行了条件试验,得出最优结果:选用喷雾干燥,最大的进料功率80 W,固液比1∶10,进口温度为250℃,从纤维形貌和分散情况来看,使用气流磨可以获得较好的海泡石产品。进而获得了完整的沉积型海泡石提纯工艺流程。综上,本研究对湘潭海泡石的矿物学特征进行了深入分析,并通过提纯产物加工试验,成功地提取出了高纯度的海泡石产品。这为湘潭海泡石的进一步开发利用提供了重要的科学依据,同时也为相关领域的生产应用提供了新的技术支持。In order to achieve the efficient development and utilisation of this seafoam ore resource,detailed mineral characterization study was carried out using chemical multi-element analysis,particle size analysis,optical microscopy analysis and scanning electron microscopy analysis,and seafoam beneficiation and application recommendations were explored.The results show that the content of seafoam increases with the decrease of particle size.Calcite and quartz are in granular form,and seafoam is distributed in bundled aggregates and is tightly combined with other minerals.In view of the nature of the ore,the principle process flow of“sieving-chemical dispersion-high speed dispersion-separation”was determined,and the optimal parameters were chosen:pH=9,dispersant 0o.8 g/L sodium pyrophosphate,high speed dispersing 20 min at the rotational speed of 2000 r/min.For the conditions of ore drying and grinding experiments,the optimal results were obtained by the choice of spray drying,the maximum feed power of 80 W,the solid-liquid ratio of 1:10,and the inlet temperature of 250 C.From the fibre morphology and the dispersion situation,the use of air milling can obtain a better seafoam products.Thus,a complete purification process of sedimentary seafoam was obtained.In conclusion,the mineralogical characteristics of Xiangtan seafoam were deeply analysed in this study,and a high-purity seafoam product was successfully extracted through the purification product processing test.This provides an important scientific basis for the further development and utilisation of Xiangtan seafoam,and also provides new technical support for the production and application in related fields.

关 键 词：工艺矿物学 海泡石 选矿 喷雾干燥 磨矿 

分 类 号：TD923[矿业工程—选矿]