利用膨润土与工业废渣制轻质保温材料  

The Application of Bentonite and Waste Residue to the Preparation of Light ThermalInsulation Material

作　　者：蒋引珊[1] 董振亮[1] 徐长耀 王玉洁[1] 

机构地区：[1]长春科技大学材料科学与工程学院,长春130026

出　　处：《岩石矿物学杂志》1999年第4期357-361,共5页Acta Petrologica et Mineralogica

摘　　要：本文介绍了利用膨润土、钙质造纸废渣制备轻质保温材料的研究，分析了膨润土在轻质保温材料制备中的作用，优选出制备轻质保温材料的配方和工艺。该材料的导热系数为０ ．１７１ Ｗ／ｍ·Ｋ，抗压强度约为９ ．３７ ｋｇ／ｃｍ２ ，容重为０ ．４９ ｇ／ｃｍ３ 。Large quantities of basic waste residue were drained from paper mills and sugarrefineries every year,resultingin the pollution oftheenvironment.The preparation oflight_dutythermal insulation material by mixing bentonite with solid wasteresidueis of great socialand economic significance.In this research ,such characteristics of bentonite as ion exchange,adsorption , dispersion and specialstructure were used. The waste residue with bentonite and pearlite was mixed and sintered below 1050 ℃.Thelightthermalinsulation material was made by bentonite andindustrial wasteresidue.Thisisasolid phasereaction .The effectsofbentonite,size,tem perature and time werestudied.The besttechnologyincludessize600 ～800 μm ,SiO2∶CaO= 1 ∶1 ,temperature 1000 ～1050 ℃,and sintering time 4 ～6 hours. The experimental results are heatconduction coefficient 0 .171 W/m·K,compressive strength 9 .37 kg/cm2 ,and unit weight 0 .49 g/cm3 .Thefunction oftheproducthasreached orsurpassedthesynthesized prod uct. The main componentis β_CaSiO3 ,together with small amounts of nephelite and wollas tonite.Studiesshow thatthe heateffectofbentonite helpsreaction athightemperature. With out producting new pollution ,the reaction can not only handle waste residue but also turn the harmfulinto the beneficial.

关 键 词：膨润土 工业废渣 保温材料 

分 类 号：TU54[建筑科学—建筑技术科学] TQ16[化学工程—高温制品工业]