-34-第45卷第6期非金属矿Vol.45No.62022年11月Non-MetallicMinesNovember,2022Ca-Mg-Al-Fe层状金属氢氧化物材料的制备及应用马安瑞1,2马向荣2*闫龙1,2*郭延红1付峰1（1延安大学化学与化工学院，陕西延安716000；2榆林学院化学与化工学院，陕西榆林719000）摘要以镁渣酸浸液为原料，采用共沉淀法制备Ca-Mg-Al-Fe层状金属氢氧化物（LDHs），探究pH值、晶化温度和时间对制备Ca-Mg-Al-Fe层状金属氢氧化物及其吸附性能的影响。结果表明，pH值为11.9，晶化温度和时间分别为150℃和16h时，制得试样结晶度较高，且具有层状金属氢氧化物的特定结构。LDHs试样用量为0.02g，对100mL100mg/L甲基橙溶液的吸附量为268.815mg/g。本研究拓展了层状金属氢氧化物在有机染料废水处理领域的应用价值，为镁渣的综合利用奠定了基础。关键词镁渣；Ca-Mg-Al-Fe；层状金属氢氧化物；甲基橙；吸附中图分类号：O614；TF09文献标志码：A文章编号：1000-8098(2022)06-0034-06PreparationandApplicationofCa-Mg-Al-FeLayeredMetalHydroxidesMaterialsMaAnrui1,2MaXiangrong2*YanLong1,2*GuoYanhong1FuFeng1(1CollegeofChemistryandChemicalEngineering,Yan'anUniversity,Yan'an,Shaanxi716000;2CollegeofChemistryandChemicalEngineer-ing,YulinUniversity,Yulin,Shaanxi719000)AbstractInthispaper,Ca-Mg-Al-Felayereddoublehydroxideswaspreparedbyco-precipitationmethodemployingacidleachingsolutionusingmagnesiumslagasrawmaterials,theinfluencesofpHvalue,crystallizationtemperatureandtimeonthepreparationandtheadsorptionpropertieswereexplored.TheresultsshowthatwhenthepHvalueis11.9,thecrystallizationtemperatureis150℃andthecrystallizationtimeis16h,theproducthashighcrystallinityandatypicallayereddoublehydroxidesstructure.Use0.02gCa-Mg-Al-Felayereddoublehydroxidestoadsorb100mL100mg/Lmethylorangesolution,theadsorptioncapacitycanreach268.815mg/g.Theresearchextendstheapplicationvalueoflayereddoublehydroxidesinthefieldoforganicdyewastewatertreatment,andalsolaysafoundationforthecomprehensiveutilizationofmagnesiumslag.Keywordsmagnesiumslag;Ca-Mg-Al-Fe;layereddoublehydroxides;methylorange;adsorption镁渣是皮江还原法炼镁过程中排出的固体废弃物，每生产1t镁产生6~9t镁渣。2021年，我国镁产量约90万t，废渣排放超500万t。...
