湿法超细研磨中磷块岩机械力化学效应  

Mechano-Chemical Effects of Phosphorite on Superfine Grinding in Ball-Stirring Mill in Wet

作　　者：吕乐福 李晓云[3] 张红卫 窦兴霞 盖国胜[4] 

机构地区：[1]国家化肥产品质量监督检验中心(山东),山东临沂276000 [2]临沂市产品质量监督检验所,山东临沂276000 [3]天津大学环境科学与工程学院,天津300072 [4]清华大学材料系教育部先进材料实验室,北京100084

出　　处：《矿物学报》2016年第3期382-386,共5页Acta Mineralogica Sinica

基　　金：国家自然科学基金项目(批准号:51374136);山东省自主创新成果转化重大专项支撑(编号:2013ZHZXJA0307);山东省质监科技计划项目(编号:2015KY06)

摘　　要：通过对不同研磨时间磷块岩样品的粒度、比表面积、XRD分析、SEM分析以及元素溶出性能的测试,系统的研究了湿法研磨时磷块岩的机械力化学效应。结果表明:在湿法超细研磨体系中,研磨时间的增加可以显著降低磷块岩颗粒粒径、增大比表面积、改善矿粉表面形貌并提高晶格结构无序化程度。这些物理性质的改变促进了磷块岩中P、Ca和Mg元素的溶出,在研磨25 h时,3种元素释放量最大,分别为28.51、24.65和10.04 g/kg。The mechano-chemical effect of phosphorite was researched in the wet ultrafine grinding system. It was analyzed by characterization of particle size, specific surface area, X-ray diffraction, scanning electron microscope and element release at different grinding time were studied. Results indicate that wet grinding could reduce the particle size, increase the specific surface area, improve the surface area and increase the structural lattice disorder with increasing milling time. These changes contribute to dissolution of phosphorous, calcium and magnesium from phosphorite. The largest release amount of phosphorous, calcium and magnesium respectively reached 28.51g/kg, 24.65 g/kg and 10.04 g/kg during grinding for 25 h.

关 键 词：磷块岩 机械力化学 超细研磨 溶出 

分 类 号：P579[天文地球—矿物学] TB321[天文地球—地质学]