微波加热法制备尾矿微晶玻璃的研究
|
摘要
以包头铁尾矿、金矿尾矿为主要原料,以白云鄂博矿尾矿中含有的Fe_2O_3和CaF_2为形核剂,采用玻璃熔制-微波热处理方法制备出以辉石相为主晶相的尾矿微晶玻璃。材料的热处理制度为3 h升温至720℃,保温20 min。所制备成的微晶玻璃其显微形貌呈现枝状晶形态,具有交错互锁结构。并且材料具有较好的理化性能:密度为2.97 g/cm~3,抗折强度为264.62 MPa,耐酸性99.38%,耐碱性99.17%,弹性模量、剪切模量分别为109.83 GPa和45.39 GPa。该材料制成微晶玻璃管材/板材制品,可广泛应用于化工、电力、建材等行业。
The diopside glass-ceramic materials were prepared by conventional glass melting technique and hybrid microwave heating using Baotou iron tailing and gold ore tailing as the main raw materials, the Fe_2O_3 and CaF_2 from Bayan Obo tailings were nucleating agents. The materials were heated up to 720 ℃ in 3 h, holding 20 min. The prepared glass-ceramics exhibit a tightly interlocking crystal structure, and the materials possess good physical and chemical properties: the density is 2.97 g/cm~3, bending strength is 264.62 MPa, acid/alkali-resistances are 99.38% and 99.17%, Elastic modulus and shear modulus were 109.83 GPa and 45.39 GPa respectively. The tube/sheet products made of glass-ceramics can be widely used in chemical industry, electric power, building materials and other industries.
The diopside glass-ceramic materials were prepared by conventional glass melting technique and hybrid microwave heating using Baotou iron tailing and gold ore tailing as the main raw materials, the Fe_2O_3 and CaF_2 from Bayan Obo tailings were nucleating agents. The materials were heated up to 720 ℃ in 3 h, holding 20 min. The prepared glass-ceramics exhibit a tightly interlocking crystal structure, and the materials possess good physical and chemical properties: the density is 2.97 g/cm~3, bending strength is 264.62 MPa, acid/alkali-resistances are 99.38% and 99.17%, Elastic modulus and shear modulus were 109.83 GPa and 45.39 GPa respectively. The tube/sheet products made of glass-ceramics can be widely used in chemical industry, electric power, building materials and other industries.
引文
[1]张雪峰,魏海燕,欧阳顺利,等.复合形核剂对CaO-MgO-Al_2O_3-SiO_2系玻璃陶瓷微观结构与力学性质的影响[J].材料导报,2015,29(2):112-114.
[2]杨玮.工业废渣和尾矿在微晶玻璃方面的应用[J].金属矿山,2009(12):163-167.
[3]李保卫,王芳,陈华,等.Cr2O3对白云鄂博西尾矿微晶玻璃显微结构及性能的影响[J].人工晶体学报,2014,43(3):642-647.
[4]许红亮,刘晓芳,王萌,等.粉煤灰微晶玻璃制备工艺研究[J].中国陶瓷,2009,45(6):17-19.
[5]李红霞,李保卫,张雪峰,等.Fe2O3对纳米晶尾矿微晶玻璃结构与性能的影响[J].人工晶体学报,2016,45(1):176-181.
[6]Li Baowei,Li Hongxia,Zhang Xuefeng,et al.Nucleation and crystallization of tailing-based glass-ceramics by microwave heating[J].International Journal of Minerals,Metallurgy and Materials,2015,22(12):1342-1349.
[7]张雪峰,刘雪波,贾晓林,等.CaF_2对复合矿渣微晶玻璃结构与力学性能的影响[J].中国陶瓷,2014,33(10):2578-2582.
[2]杨玮.工业废渣和尾矿在微晶玻璃方面的应用[J].金属矿山,2009(12):163-167.
[3]李保卫,王芳,陈华,等.Cr2O3对白云鄂博西尾矿微晶玻璃显微结构及性能的影响[J].人工晶体学报,2014,43(3):642-647.
[4]许红亮,刘晓芳,王萌,等.粉煤灰微晶玻璃制备工艺研究[J].中国陶瓷,2009,45(6):17-19.
[5]李红霞,李保卫,张雪峰,等.Fe2O3对纳米晶尾矿微晶玻璃结构与性能的影响[J].人工晶体学报,2016,45(1):176-181.
[6]Li Baowei,Li Hongxia,Zhang Xuefeng,et al.Nucleation and crystallization of tailing-based glass-ceramics by microwave heating[J].International Journal of Minerals,Metallurgy and Materials,2015,22(12):1342-1349.
[7]张雪峰,刘雪波,贾晓林,等.CaF_2对复合矿渣微晶玻璃结构与力学性能的影响[J].中国陶瓷,2014,33(10):2578-2582.