利用低品质磷源制备高枸溶性磷肥  

Preparation of high citrate soluble phosphorus fertilizer with low quality phosphorus resources

作　　者：李莹莹 孙玉翠[3] 梅毅 匡家灵[4] 李恒 刘翠侠 马航 LI Yingying;SUN Yucui;MEI Yi;KUANG Jialing;LI Heng;LIU Cuixia;MA Hang(School of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,Yunnan Province,China;Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials,Kunming University of Science and Technology,Kunming 650500,Yunnan Province,China;Development Center of Yunnan Yuntianhua Co.,Ltd.,Kunming 650228,Yunnan Province,China;Yunnan ICL YTH phosphate Research and Technology Center Co.,Ltd.,Kunming 650228,Yunnan Province,China)

机构地区：[1]昆明理工大学化学工程学院,云南昆明650500 [2]昆明理工大学云南省磷化工节能与新材料重点实验室,云南昆明650500 [3]云南云天化股份有限公司研发中心,云南昆明650228 [4]云南云天化以化磷业研究技术有限公司,云南昆明650228

出　　处：《化学工程》2023年第10期12-17,共6页Chemical Engineering(China)

基　　金：云南省重大科技专项计划(202102AE090053);云南省重大科技专项计划(202102AE090098);云南(昆明)院士专家工作站项目(YSZJGZZ-2022034)。

摘　　要：为了提高对低品质磷资源的利用效率,以低品位磷矿、湿法磷酸淤渣(渣酸)为主要原料,同时根据云南省澳洲坚果植株的营养特性及养分需求,采用单因素试验方法探索制备高含量枸溶性磷肥的实验条件。实验结果表明:最佳的工艺条件为湿法磷酸淤渣(渣酸)与低品位磷矿的质量比为1.0、反应温度为85℃、熟化时温度为55℃、熟化时间维持在7 d、转化剂添加量为12%、水分用量为40%。In order to improve the utilization efficiency of low-quality phosphorus resources,low-grade phosphate rock and wet phosphoric acid sludge(sludge acid)were used as the main raw materials,while the test conditions for the preparation of high-content citrate soluble phosphorus fertilizer were explored using a single-factor test method based on the nutritional characteristics and nutrient requirements of macadamia plants in Yunnan province.The experimental results show that the optimum process conditions are as follows:the mass ratio of wet phosphoric acid sludge(sludge acid)to low-grade phosphate rock is 1.0,the reaction temperature is 85℃,the curing temperature is 55℃,the curing time is maintained at 7 d,the amount of conversion agent is 12%and the amount of water is 40%.

关 键 词：低品位磷矿 湿法磷酸淤渣(渣酸) 澳洲坚果 磷质量分数 

分 类 号：TQ442[化学工程—化学肥料工业]