2023年6月肥料与健康35DOI:10.3969/j.issn.2096-7047.2023.03.008含聚合磷水溶肥料微粒化造粒试验研究舒艺周1,马航1,2,匡家灵1,杨先1,张恒1,黄照昊1(1.云南云天化以化磷业研究技术有限公司云南昆明650228;2.云南云天化股份有限公司研发中心云南昆明650228)摘要:因聚磷酸铵中多聚磷酸盐的存在,易吸潮水解,结块严重,作为水溶肥料的原料时,防水解和防结块是主要的技术难点。以20-20-20含聚合磷水溶肥料为例,采用转鼓造粒机进行微粒化造粒,得到粒径为0.85~2.00mm的微颗粒产品,考察了聚合磷占比和造粒温度对微粒化造粒的影响,并对微颗粒产品的养分含量、溶解性和抗击外力能力进行了测试。结果表明:较优的造粒条件为聚合磷占比25%~50%,造粒温度不宜超过40℃;得到的微颗粒产品的养分含量满足指标要求,且具有一定的抗击外力能力,不易粉化,能够有效防止结块,但溶解速率比粉状产品的慢。关键词:聚磷酸铵;聚合磷;水溶肥料;微颗粒肥料;造粒中图分类号:S143.5文献标志码:A文章编号:2096-7047(2023)03-0035-04ExperimentalStudyonMicronizedGranulationofWater-SolubleFertilizerContainingPolyphosphatesSHUYizhou1,MAHang1,2,KUANGJialing1,YANGXian1,ZHANGHeng1,HUANGZhaohao1(1.YunnanICLYTHPhosphateResearchandTechnologyCo.,Ltd.,Kunming,Yunnan650228,China;2.ResearchandDevelopmentCentre,YunnanYuntianhuaCo.,Ltd.,Kunming,Yunnan650228,China)Abstract:Duetotheexistenceofpolyphosphatesinammoniumpolyphosphate,itiseasytoabsorbmoisture,hydrolyzeandcakingseriously.Whenusedastherawmaterialofwater-solublefertilizer,theanti-hydrolysisandanti-cakingoftheammoniumpolyphosphateisthemaintechnicaldifficulties.Taking20-20-20water-solublefertilizercontainingpolyphosphatesasanexample,themicrogranulatedproductwithparticlesizeof0.85-2.00mmisobtainedbyusingarotarydrumgranulator.Theeffectsoftheproportionofpolyphosphatesandthegranulationtemperatureonthemicronizedgranulationareinvestigated,andthenutrientcontent,solubilityandresistancetoexternalforcesofthemicrogranulatedproductaretested.Theresultsshowthattheoptimumgranulationconditionsare25%-50%ofthepolyphosphatecontent,andthegranulationtemperatureshouldnotexceed40℃.Thenutrientcontentofthemicrogranulatedproductmeetstheindexrequirements,andhasc...
