摘要
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。
By the analysis and study on the sedimentary environment during coalforming period of
coalbearing strata in Dongsheng,and by the experimental verification of the adsorption
relationship between the kaolinite and organic matter using the organic adsorption
experiment,the concentration mechanism of sandstonetype kaolin in Dongsheng is discussed.It
is indicated that the concentration and mineralization of kaolinite in the fluvial environment are
related to the existence of a lot of organic matter.The humic material produced by the
decomposition of plant has the stronger adsorption capacity.Under the conditions of pH>55 and
suitable amount of multivalent cations,the humic material in the water medium could be
adsorbed firmly each other with the kaolinite and quartz through the multivalent cations,forming
the complex of kaoliniteorganic matterquartz,thus,the kaolinite could be transported and
deposited along with the quartz.Some organic matters with a certain of hydrophobicity are
adsorbed with the minerals,changing the hydrophilicity of mineral particle surface and
prompting the deposition and concentration of kaolinite.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1999年第3期13-16,共4页
Coal Geology & Exploration
基金
国家自然科学基金
关键词
高岭土
煤系
有机物
沉积作用
砂岩型
高岭土
kaolin
coal series
organic
materials
sedimentation
mechanism
Dongsheng district
