摘要
对煤中形态硫的分析测试结果表明，１）碳酸盐台地潮坪成因的煤以有机硫为主，黄铁矿硫占少数，但其类型、产状多样，全硫含量在剖面上虽有波动变化，但幅度较小，硫分布模式说明成煤环境受海水影响强烈且持久稳定。２）下三角洲平原泥炭沼泽成因的煤属以黄铁矿硫为主的高硫煤，按形态和产状可分５种类型的黄铁矿，煤层剖面上全硫含量由底到顶部逐渐增加，说明成煤环境亦受海水影响强烈，但有一逐渐增强的过程。３）上三角洲平原沼泽成因煤为富有机硫的低硫煤，黄铁矿量少、类型单调，全硫含量在煤层剖面上的变化为顶底高、中部低，表明煤层顶、底板性质控制着煤中硫的分布。
The experimental results show that the organic sulfur dominates the total sulfur in highsulfur coal accumulated in carbonate platform, while pyrite of great variety is less important. The content of total sulfur through out the coal profile remains stable only with small fluctuation. All these indicate a constant depositional environment with intense influence of sea water. Containing large amount of pyrite, which can be divided into 5 types in the light of shapes and occurences, is characteristic of the coal accumulated on lower deltaplain. The content of total sulfur increases gradually from bottom to top in the coal profile demonstrating a seawater-influenced depositional enviroment with a process of gradual increase of intensty. The coal formed on upper delta plain is a low sulfur coal with dominating organic sulfur content. The pyrite is minor and its types andoccurences are less variable. The distributional model of total sulfur in coal profile shows higher content in bothupper and lower parts, while low in the middle part, which indicates the influence of depositional enivronment ofroof and floor.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第4期462-470,共9页
Acta Petrologica Sinica
基金
自然科学基金
关键词
煤矿床
聚煤环境
煤岩
硫
赋存
Coal
Sulfur species
Depositional environment
