摘要
根据硫酸钙还原分解产物成分,通过钾长石自身高温特性和添加硫酸钙及分解产物焙烧反应研究,探明实际体系下焙烧反应历程。研究结果表明:在1200℃下,硫酸钙能与钾长石进行反应,形成低共熔物K2Ca2(SO4)3,此物质结构稳定,无水溶特性;CaS不与钾长石反应,二者独立存在于体系中;CaO有较好反应活性,能置换出钾长石中的氧化钾;在有硫酸钙存在时,当氧化钙量不足时生成K2S2O8,当氧化钙充足时则生成K2SO4。硅、铝酸的钙盐则与体系物料配比及操作条件有关。
Roasting reaction process was proved under real system according to reductive decomposition of calcium sulfate product ingredients, feldspar itself by adding calcium sulfate and high temperature properties and decomposition reaction of calcined product. The results show that： In 1200℃, calcium sulfate and potassium feldspar can react to form eutecticK2Ca2（SO4）3, this material structural stability, no water-soluble characteristics. CaS does not react with K-feldspar, both independent present in the system. CaO have better reactivity on the replacement of the potassium feldspar. in the presence of calcium sulfate, calcium oxide is generated when there is insufifcientK2S2O8, when sufifcient calcium oxide generatedK2SO4. Silicon, calcium aluminate and systems of the material ratio and operating conditions.
出处
《非金属矿》
CAS
CSCD
北大核心
2014年第5期14-17,共4页
Non-Metallic Mines
基金
国家自然科学基金(21166012)
关键词
钾长石
助剂
焙烧过程
XRD分析
potassium feldspar
accessory ingredient
roasting
XRD analysis
