拜耳法赤泥基轻质保温陶瓷的制备
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摘要
以拜耳法赤泥、玻璃粉和钾长石为原料,采用可燃物燃尽发泡法制备了轻质保温陶瓷。研究了不同煅烧温度对试样物理性能的影响,并对烧结试样的微观结构、物相以及碱溶出进行了分析。结果表明:试样最佳煅烧温度为1070℃;试样气孔为闭口孔,呈密排六方分布;主要物相是霞石,碱溶出量很少。
Using Bayer red mud,glass powder and potassium feldspar as raw materials,light-weight thermal insulation ceramics were prepared by combustible material burnout foaming method. The effects of calcination temperature on the physical properties of the sintered samples were studied. The microstructure,phase and alkali dissolution of the sintered samples were also analyzed. The results show that when the optimum calcining temperature is 1070 ℃; the pores are closed pores,and the pores structure of it is hexagonal close packed; the main phase is nepheline, and there is little alkali dissolution.
Using Bayer red mud,glass powder and potassium feldspar as raw materials,light-weight thermal insulation ceramics were prepared by combustible material burnout foaming method. The effects of calcination temperature on the physical properties of the sintered samples were studied. The microstructure,phase and alkali dissolution of the sintered samples were also analyzed. The results show that when the optimum calcining temperature is 1070 ℃; the pores are closed pores,and the pores structure of it is hexagonal close packed; the main phase is nepheline, and there is little alkali dissolution.
引文
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[2]Liu W,Yang J,Xiao B.Application of Bayer red mud for iron recovery and building material production from alumosilicate residues[J].Journal of Hazardous Materials,2009,161(1):474-478.
[3]练佳佳,唐庆杰,吴文荣,等.赤泥在环境修复领域的应用综述[J].硅酸盐通报,2015,34(11):3236-3242.
[4]王志,韩敏芳,张以河,等.拜耳法赤泥的湿法碳化脱碱工艺研究[J].硅酸盐通报,2013,32(9):1851-1861.
[5]南相莉,张廷安,刘燕,等.我国主要赤泥种类及其对环境的影响[J].过程工程学报,2009,9(s1):459-464.
[6]刘东燕,冯燕博,赵宝云,等.不同含水率条件下拜耳法赤泥强度及水力学特性[J].环境工程学报,2016,10(5):2601-2608.
[7]任孟杰,郭焱.利用拜耳法赤泥和氟化钙污泥制备烧结砖块[J].环境工程学报,2017,11(8):4797-4802.
[8]刘松辉,管学茂,冯春花,等.赤泥安全堆存和综合利用研究进展[J].硅酸盐通报,2015,34(8):2194-2200.
[9]Somlai J,Jobbágy V,Kovács J,et al.Radiological aspects of the usability of red mud as building material additive[J].Journal of Hazardous Materials,2008,150(3):541-545.
[10]司常钧.拜耳法赤泥固化基础研究[D].昆明:昆明理工大学,2013.
[11]张以河,王新珂,吕凤柱,等.赤泥脱碱及功能新材料研究进展[J].环境工程学报,2016,10(7):3383-3390.
[12]陈惠康,赵光利,柴洪云,等.拜尔法赤泥膏体充填安全堆存技术及应用[J].中国金属通报,2015(S1):46-49.
[13]魏红姗,马小娥,管学茂,等.大掺量拜耳法赤泥轻质保温陶瓷材料的研究[J].轻金属,2017(4):16-19.
[14]Liu T,Tang Y,Li Z,et al.Red mud and fly ash incorporation for lightweight foamed ceramics using lead-zinc mine tailings as foaming agent[J].Materials Letters,2016,183:362-364.