反浮选法钾肥生产结晶产物中大颗粒物料的破碎脱钠技术研究  

Research on the Crushing and Sodium Removal Technology of Large Particle Materials in the Crystallization Products of Potassium Fertilizer Production by Reverse Flotation Method

作　　者：霍永星 孟浩 张喜来 王延宏 蔡建德 HUO Yongxing;MENG Hao;ZHANG Xilai;WANG Yanhong;CAI Jiande(Qinghai Salt Lake Industry Co.,Ltd.,Golmud 816000,China)

机构地区：[1]青海盐湖工业股份有限公司,青海格尔木816000

出　　处：《盐科学与化工》2024年第12期27-29,34,共4页Journal of Salt Science and Chemical Industry

摘　　要：目前青海盐湖工业股份有限公司1000000t“反浮选—冷结晶”法钾肥生产装置中,光卤石经冷结晶工序后,结晶器中未分解的大颗粒物料(+0.8 mm)较多。为实现结晶产物中未分解大颗粒物料的高效利用,根据粒径分布和光卤石中NaCl含量,研究确定了以2mm为界进行磨碎脱钠,磨碎最佳时间为2min,-2mm粒级中NaCl含量较高,需要再次进行浮选脱钠。At present,in the million ton“reverse flotation-cold crystallization”method po⁃tassium fertilizer production plant of Salt Lake Corporation,after the cold crystallization process of carnallite,there is a large amount of undecomposed large particle material(+0.8 mm)in the crys⁃tallizer.In order to achieve efficient utilization of undecomposed large particles in crystalline prod⁃ucts,based on the particle size distribution and NaCl content in carnallite,it was determined to grind and remove sodium with a 2 mm boundary.The optimal grinding time is 2 minutes,and the NaCl content in the-2 mm particle size is relatively high,requiring further flotation for sodium re⁃moval.

关 键 词：反浮选—冷结晶 氯化钾 结晶产物 破碎磨矿 捕钠率 

分 类 号：TQ131.13[化学工程—无机化工]