共查询到20条相似文献，搜索用时 784 毫秒
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利用化学分析、XRD、IR、SEM、TGA/DSC等技术,从矿物学角度对淮北煤系高岭土和苏州高岭土的性能差异进行了分析。分别以淮北煤系高岭土和苏州土为载体合成了FCC催化剂,并对催化剂的性能进行了对比研究。结果表明,淮北煤系高岭土相对于苏州土具有Fe2O3、TiO2等杂质含量高,结晶有序度低,粒度分布范围较宽,微观形貌以片状为主等特点;以淮北煤系高岭土为载体制备的催化剂(HC-1)的理化性能及石油裂化性能与对比样(SC-1)相当,可以满足FCC催化剂质量指标的要求。 相似文献
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高岭土/肼插层材料的制备与表征 总被引：4，自引：0，他引：4
以高岭土为原料,选取50%水合肼作为插层剂,采用直接液相插层法,并辅以磁力搅拌,成功地将肼分子插入到高岭石结构层间,制得肼插层高岭土材料。利用红外光谱和粒度分析仪对产品进行了表征。IR谱表明, 插层中肼分子中的NH基与高岭石内表面羟基之间产生了N-H-OH作用,形成了新的氢键;插层反应后的样品,其粒径小于5 μm的颗粒占总颗粒数的比例降低了10.55%,平均粒径增大了46.84%。 相似文献
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高岭土/胡敏酸复合体对重金属离子吸附解吸实验研究 总被引：2，自引：0，他引：2
本文利用高岭土对胡敏酸吸附形成稳定的有机一无机络合物,研究了高岭土／胡敏酸复合体对Cu^2＋、Cd^2＋和Cr^2＋的吸附。结果表明,胡敏酸对高岭土改性后能提高上述三种重金属离子的吸附性能,高岭土／胡敏酸复合体对三种重金属离子的吸附量都随pH值的升高而增加,随离子强度的增加而减小。本文还研究了高岭土／胡敏酸复合体对上述三种重金属离子的吸附动力学,发现吸附过程可用Elovich方程和一级动力学方程进行较好的拟合。 相似文献
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Dr. rer. nat. h. c. Kurt Burger 《International Journal of Earth Sciences》1980,69(2):488-531
Starting from general considerations of the rocks existing in the Ruhr Carboniferous and the mineral layers in coal seams, an informative review is given about the definition of clay stones and kaolin coal tonsteins as well as about the stratigraphic distribution of key horizons with special regard to the kaolin coal tonsteins. Information follows about the first evidence of individual kaolin coal tonsteins, their existence in the normal geologic columns and more recent stratigraphic sections as well as about the concentration of repositories. Besides, the kaolin coal tonsteins are characterized according to their macroscopic and microscopic external form. The paper reports about their material constituents (mineral components, trace elements, anorganic chemical constituents and organic substances in form of coal hydrates and amino acids). The paper closes with some statements about the importance and utilization of kaolin coal tonsteins to solve local and regional duties in mining geology. 相似文献
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广西合浦清水江高岭土矿的矿物学研究 总被引：1，自引：0，他引：1
广西合浦清水江高岭土矿床属花岗岩蚀变型.在区域地质背景概况调查及矿区地质特征、矿石自然品级分布研究的基础上,在矿区内7个不同地点采集样品并分离提纯.样品的X射线粉晶衍射分析表明黏土矿物主要由高岭石和伊利石组成;热分析显示了矿物的相变过程;扫描电镜观察显示高岭石为片状;其化学成分以比较低的铁、钛含量为特征;漂白作用对黄色和红色黏土的白度改善非常明显,小于2μm的颗粒分布占80%左右.这些特征表明广西合浦清水江高岭土的品质优良,具有广阔的开发利用前景. 相似文献
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苏州高岭土矿主要由高岭石、7埃洛石、10埃洛石及少量绢云母、蒙脱石、明矾石、三水铝石组成。高岭土矿物形成后因外界地化条件改变发生了以下转变:(1)埃洛石脱水向高岭石转化;(2)次生淋滤埃洛石形成;(3)埃洛石和三水铝石之间的互相转化;(4)Ca型蒙脱石形成;(5)高岭土的磷酸盐化作用;(6)次生淋滤明矾石的形成。矿物生成的先后顺序和共生关系可将矿物形成分为主要成矿期和成矿期后演化两个阶段。矿物的后期演化使优质高岭土进一步富集,改造,形成量大质优的高岭土矿。同时,非高岭土矿物的生成又使部分矿石质量变差,降低了矿石的工业价值。 相似文献
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B. F. Gorbachev T. Z. Lygina T. M. Argynbaev Z. V. Stafeeva 《Lithology and Mineral Resources》2012,47(1):36-47
The Zhuravlinyi Log deposit is located 12 km southeast of Plast City. The deposit was initially prospected in 1951 and 1952
under the supervision of V.G. Lyulicheva. The prospecting revealed the presence of kaolin of quality surpassing the raw material
in the Eleninsk and Kyshtym deposits. Although a positive assessment was given, new prospecting and appraisal works were carried
out under the supervision of V.I. Kakorin in the vicinity of the previously discovered deposit in 1985 taking into consideration
recommendations given by the VNIIgeolnerud (renamed TsNIIgeolnerud) Federal State Unitary Enterprise. The results revealed
several separate white and pale kaolin deposits. Exploitation of the deposit was started even before its exploration. Construction
of the Plast-Rifey dressing plant was completed during the exploitation of the central ore body. Follow-up exploration of
the deposit completed in 2006 confirmed that the dry kaolin equivalent reserves of categories B + C1 according to the Russian classification (approximately corresponding to the measured + indicated reserve in the western classification)
and category C2 (approximately corresponding to the inferred reserve) are estimated at 11.05 and 5.55 Mt, respectively. The Zhuravlinyi Log
deposit is a major supplier of kaolin products fitting the standards of paper, fine ceramics, fiberglass, chemical reagents,
and others. The present paper based on the exploration data attempts to show specific features of the geological setting of
this deposit, as well as the mineral composition and properties of kaolin therein. 相似文献
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东胜煤系砂岩型高岭土的富集机理 总被引：6，自引：0，他引：6
通过对东胜含煤地层成煤期沉积环境、古介质等的分析,并用有机吸附实验对高岭石与有机质的吸附关系进行了实验,探讨了东胜砂岩型高岭土的富集机理。结果表明,高岭石在河流环境中的富集成矿与水介质中大量有机质的存在有关,植物分解产生的腐殖质具有很强的吸附性,在pH值>5.5和适量的多价阳离子存在的条件下,介质水中的腐殖质可通过多价阳离子与高岭石和石英相互牢固吸附,形成高岭石-有机质-石英复合体,从而使高岭石能够与石英一起搬运、沉积;某些具有一定疏水性的有机质与矿物的吸附,改变了矿物颗粒表面的亲水性,促进了高岭石的沉积富集。 相似文献
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《International Geology Review》2012,54(1):52-59
Experimental data on copper sorption by organic and mineral sorbing agents have shown that sorption can take place from very dilute solutions. The degree of sorption depends on the total amount of dissolved copper in solution, the velocity of the circulating solution, on the duration of contact between the sorbent and fresh solutions, and on the degree of diffusion of the solution within the sorbent. Organic matter, namely pine loam, peat, lignite, and humic acid, absorbs copper from very dilute solutions (from 2x10-4 to 2x10-5 grams per liter copper concentrations, 2.5 to 4.5 percent); other sorbents, namely; sand, kaolin, feldspar, and quartz, absorb one-tenth as much as the organic sorbents. Desorption is very slight in organic material; it is almost complete in mineral sorbents. It is believed that sorption plays a very significant part in the formation of sedimentary copper deposits, particularly in the copper sandstones of the Urals. 相似文献
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N. S. Bortnikov V. M. Novikov A. D. Savko N. M. Boeva E. A. Zhegallo E. B. Bushueva A. V. Krainov D. A. Dmitriev 《Lithology and Mineral Resources》2013,48(5):384-397
This paper reports the results of precision structural-morphological study of kaolinite from clayey rocks taken in various areas of the Voronezh anteclise subjected to different stages of lithogenesis: primary kaolins of the weathering crust, proluvial-talus and lacustrine secondary kaolins, as well as lacustrine-swampy fireproof and deltaic-lagoonal refractory clays. The clayey material was transported over more than 300 km. The formation of the fireproof and refractory kaolin deposits in the Voronezh anteclise was related to the Devonian and Early Cretaceous stages of the geological evolution of the region. In terms of spatiotemporal and facies features, the studied genetic series of the kaolin clay deposits is unique. It was established that the sequential structural-morphological evolution o kaolinite in the considered deposits was caused by its mechanical disintegration during transport and redeposition. Interrelation between organic and mineral matters in the fireproof clays was revealed for the first time. Experimental studies of the behavior of kaolinite during sequential grinding and heating confirmed the main reasons for its natural degradation. The formation of virtually monomineral kaolin clays was provoked by the “flow-through” diagenesis, which is similar to weathering in trend. Evolution of mineral matter of the considered genetic series in kaolinite clay deposits was accompanied by the increase of δ18O values and their dispersion. Peculiarities identified in the behavior of kaolinite and related oxygen isotope characteristics of different-aged denudation and redeposition products of the Devonian weathering crust can play an indicator role in studying different stages of the lithogenesis of clayey rocks. 相似文献
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介绍了豫西煤系地层高岭岩的分布特征，并通过对该区高岭土岩的宏观特征描述和X射线、差热分析、扫描电镜等各种测试结果的分析，阐述了该区煤系地层高岭岩的赋存规律和理化特征，指出本溪组上部和下石盒组底部大紫泥岩中的硬质高岭岩比较稳定且品位较优。同时，结合该区高岭岩加工厂利用情况，通过生产煅烧高岭岩的试验，认为豫西煤系高岭岩可用以生产造纸涂料和橡胶塑料系列产品，为煤矿综合开发有益资源提供了利用方向。 相似文献