柠檬酸工业废渣做水泥缓凝剂的生产应用

Citric acid slag instead of gypsum for the practical application of cement retarder

柠檬酸工业废渣的主要成分是二水硫酸钙,是石膏的主要成分,通过研究和试验证明,其代替天然石膏做水泥缓凝剂使用,具有实际可行性。但其水分高、流动性差、灼烧量大、含有一定的残余酸和菌丝体有机物,在实际生产中有一定的困难,针对柠檬酸工业废渣的物理特性及水泥生产的工艺要求,采取相应的工艺措施,解决相关的问题,用柠檬酸工业废渣做缓凝剂在水泥生产中应用,取得了很好的经济效益和环境效益。

Citric acid is the main component of industrial waste residue of dihydrate calcium sulphate,is the main element of the gypsum,through research and test prove that the instead of natural gypsum as cement retarding agent used,the practical feasibihty,but its high moisture content,large amount of poor liquidity,calcination and contains a certain amount of residual acid and mycelium organic material,there are some difficulties in the actual production, in the light of the physical properties of citric acid industrial waste residue and cement production process requirement,take corresponding measures to solve the related problem,made retarder citric acid industrial waste used in cement production,has achieved good economic and environmental benefits.