SeriesNo.560February2023金属矿山METALMINE总第560期2023年第2期收稿日期2022-10-12基金项目国家自然科学基金面上项目(编号:51874212,22078252)。作者简介张子赟(2000—),男,硕士研究生。通信作者周芳(1982—),女,教授,博士,博士研究生导师。甲酸铵复配铵盐浸取风化壳淋积型稀土矿渗透性研究张子赟1,2马晨伟1,2周芳1,2黄素华1,2冯健1,2余军霞1,2池汝安1,2(1.武汉工程大学资源与安全工程学院,湖北武汉430074;2.绿色化工过程教育部重点实验室,湖北武汉430073)摘要风化壳淋积型稀土矿的渗透性对稀土浸取效率具有重要影响,为了更好地了解浸矿过程中浸取剂的渗透规律,分别探讨了硫酸铵、氯化铵和硝酸铵复配甲酸铵作为浸取剂浸取稀土时,矿石初始含水率、装矿高度及压差对风化壳淋积型稀土矿渗透性的影响。结果表明,3种复配铵盐在矿石中的渗透速度均随着初始含水率的增加、装矿高度的减小和压差的增大而增大,其中硝酸铵复配甲酸铵作为浸取剂时浸取液在矿体中的渗透速度最快且达到稳定渗流的时间最短。关键词甲酸铵铵盐风化壳淋积型稀土矿浸取渗透性中图分类号TF111.31文献标志码A文章编号1001-1250(2023)-02-085-09DOI10.19614/j.cnki.jsks.202302012StudyontheLeachingPermeabilityofWeatheredCrustElution-despositedRareEarthOrebyAmmoniumFormateMixedwithAmmoniumSaltZHANGZiyun1,2MAChenwei1,2ZHOUFang1,2HUANGSuhua1,2FENGJian1,2YUJunxia1,2CHIRu′an1,2(1.SchoolofResourcesandSafetyEngineering,WuhanInstituteofTechnology,Wuhan430074,China;2.KeyLaboratoryofGreenChemicalProcess,MinistryofEducation,Wuhan430073,China)AbstractTheleachingpermeabilityofweatheredcrustelution-despositedrareearthoresplaysanimportantroleintheleachingefficiencyofrareearths.Inordertobetterunderstandtheseepagelawofleachingagentintheleachingprocess,theeffectsoftheinitialmoisturecontent,theoreloadedheightandthepressuredifferenceonthepermeabilityofweatheredcrustelution-despositedrareearthoreswerediscussedwhenammoniumsulfate,ammoniumchlorideandammoniumnitratecombinedwithammoniumformatewereappliedasleachingagent.Theresultsshowthattheseepagevelocityofthreekindsofcompoundammoniumsaltsincreaseswiththeincreaseofinitialmoisturecontent,thedecreaseoforeloadedheightandtheincreaseofdif-ferentialpressure.Theleachi...
