韩城石炭—二叠系原煤的自身固硫率和硫的烧失率

Sulfur fixing and loss on lgnition rate of permo-carboniferous raw coal

摘要: 对陕西韩城矿区的石炭-二叠系4个主采煤层的原煤自身固硫率和硫的烧失率进行了研究,其中11号煤96%的硫,5号煤98%,3号煤92%和2号煤94%的硫在80 0~850℃温度下灼烧2 h已分解释放。其燃渣中的硫主要以硫酸盐的形式存在。煤自身的固硫率和灰分含量密切相关,特别是与煤灰分中的氧化钙关系最为密切。原煤中硫的烧失率与煤中全硫、有机硫和无机硫的含量关系密切。

Abstract: The rates of sulfur fixing and loss on ignition of 4 main mining coal seams aged in Permo-Carboniferous in Hancheng mining area,Shaanxi are analyzed.The sulfur of 96% in Seam No.11,98% in Seam No.5,92% in Seam No.3,94% in Seam No.2 is decomposed and lost in ignition process under 800~850℃ for 2h.The remained sulfur in cider occurred generally in sulfur form.The fixing rate is closely related to ash content,especially the CaO in coal ash.The loss on ignition of sulfur in raw coal is related to contents of total sulfur,organic and inorganic sulfur.