冯启彪
亚硫酸钙型脱硫石膏生产高强环保型粉刷石膏的研究
冯启彪
摘 要:通过对半干法脱硫产生的亚硫酸钙型脱硫石膏的材性研究表明,其主要矿物成份是亚硫酸钙,另有少量的硫酸钙。亚硫酸钙在氧化气氛条件下经焙烧处理可氧化成为硫酸钙,即Ⅱ型无水石膏。Ⅱ型无水石膏经强度激发,凝结时间和保水性能改性处理之后,可以配置强度高、凝结时间任意可调、且初终凝时差长的高性能粉刷石膏。
Abstract: Based on the research of the performance of calcium sulfite flue-gas gypsum which produced by semi-dry flue gas desulphurization, it is shown that the main mineral composition is calcium sulfite, as well as a small amount of calcium sulfate. After roasting, the calcium sulfite can become calcium sulfate in oxidizing atmosphere condition, namely Ⅱ type anhydrite. Through the treatment of strength excitation and modification of setting time and water retention, Ⅱ type anhydrite can be configured to high performance painted gypsum with high strength, adjustable setting time and long initial and final setting time.
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