用磷石膏钙渣和不溶性含钾岩石制备钾钙肥的工艺研究  

Study of Technology for Preparation of Calcium-Potassium Fertilizers from Phosphogypsum Calcium Residue and Insoluble Potassium-Bearing Rock

作　　者：胡德庚[1] 朱云勤[1] 周美姣[1] 郭淑琴 

机构地区：[1]贵州大学资源化工研究所,贵州贵阳550025 [2]贵州西洋肥业有限公司,贵州贵阳550025

出　　处：《化肥工业》2012年第5期21-23,共3页Chemical Fertilizer Industry

摘　　要：利用不溶性含钾岩石和磷石膏钙渣为原料,混合均匀后,经制块、干燥、高温烧结等工艺过程制得钾钙肥。通过对钾钙肥制备过程中的主要影响因素,如原料配比、烧结温度、烧结时间等,进行研究,得出钾钙肥制备的最优工艺条件,即磷石膏钙渣与不溶性含钾岩石的配比为1.45∶1,烧结温度为1 160℃,烧结时间为30 min。同时,对钾钙肥的生产过程进行了热分析。Insoluble potassium-bearing rock and phosphogypsum calcium residue are used as feedstocks, mixed uniformly, made into lumps, dried and sintered at a high temperature to manufacture potassium-calcium fertilizers. A study is made of the chief influencing factors in the process of manufacture, such as feedstock proportioning, sintering temperature, and sintering time, and the optimum process conditions are obtained, viz., proportioning of phosphogypsum calcium residue and insoluble potassium-bearing rock at 1.45 ： 1, sintering temperature of 1 160 ℃, and sintering time of 30 min. Also, a thermal analysis is made of the process.

关 键 词：磷石膏钙渣 不溶性含钾岩石 钾钙肥 工艺 研究 

分 类 号：TQ444[化学工程—化学肥料工业]