化工进展2013，Vol.32Issue(3)：692-696,5.DOI:10.3969/j.issn.1000-6613.2013.03.036
碳酸钙渣悬浮态煅烧试验
Study on suspension calcination technology of calcium carbonate residue
摘要
Abstract
The calcium carbonate residue is a new chemical byproduct in the production of ammonium sulfate using phosphogypsum. Lime with high reactivity can be obtained by the process of calcium carbonate calcination. A pilot experimentation on calcium carbonate calcination was presented in this paper. The calcining devices were developed by the Powder Institute of Xi'An University of Architecture and Technology. The impacts of different calcination methods on lime were discussed. In addition, the product detection methods were suggested. The decomposition rates and activity indicators in accumulation state and suspension state were compared. The results showed that suspension calcining process had better composition rate compared to the accumulation calcination. The CaCO3 apparent decomposition rate can reach >99% and the product obtained had larger specific surface area, better porosity, and higher activity. In addition, the heat efficiency of suspension calcination was better than traditional calcination processes. Therefore, the suspension calcination process can be potentially used for large-scale industrial production.关键词
磷石膏/碳酸钙渣/悬浮态分解Key words
phosphogypsum/ calcium carbonate residue/ suspended decomposition分类
化学化工引用本文复制引用
陈延信,孙志,赵博,朱玮杰..碳酸钙渣悬浮态煅烧试验[J].化工进展,2013,32(3):692-696,5.基金项目
陕西省重大科技创新项目(2010ZKC0117). （2010ZKC0117）
