【摘要】 通过原子吸收和等离子体原子发射光谱法,研究了6种不同分散剂对14种煤溶出Ca2+、Mg2+、Fe3+(Fe2+)、Al3+、SiO2-3离子的影响。结果表明,煤中溶出高价离子的数量,主要取决于分散剂与高价离子间的相互作用特征,以及矿物质的种类和数量。煤在不同分散剂水溶液中溶出高价离子的多少,并不单纯与水煤浆(CWS)的流变性或煤的成浆性具有相关性。煤中矿物质对CWS性质的影响,是多种因素综合作用的结果,溶出离子的种类和数量只是其中的重要因素之一。更多还原

【Abstract】 The effects of 6 dispersants on the amounts of Ca²⁺, Mg²⁺, Fe³⁺(Fe²⁺), Al³⁺, and SiO^2-₃ ions extracted from 14 Chinese coals were studied by atomic adsorption spectrometry （AAS） and inductively coupled plasmatorch-atomic emission spectrometry （ICP-AES）. The results show that many dispersants accelerated the dissolution of Ca²⁺ ion from coals, but were not obvious to that of Mg²⁺ and Al³⁺ ions. The influence of different dispersants on dissolved Fe³⁺/Fe²⁺ ion depends on the kinds of mineral matters in coal. The amounts of dissolved high-valence cations from coals mainly depend on the interaction between dispersants and coals, as well as the kinds and amounts of mineral matters in coals. There is no certain relativity between the amounts of dissolved cation and corresponding metal oxide in coal ash. The slurryability or rheological behavior of coal water slurry （CWS） is not simply dependent on the amounts of high-valence cations. The effect of mineral matters in coals on CWS properties is an integrated result of many factors, and the kind and amount of dissolved inorganic ions are only some of the important factors.更多还原