摘要
为了利用大量的钢渣、改质剂A和改质剂B等固体废弃物制备具有高附加值的微晶玻璃,将钢渣与改质剂A和B混合熔融提铁并采用DTA、XRD、SEM等手段研究了Al2O3对钢渣提铁后二次渣制取的微晶玻璃性能的影响。结果表明,当Al2O3质量分数为3%～6%时,试样的主晶相为硅灰石,微晶玻璃晶体呈粒状,晶体结构疏松且有少许气孔存在;随着Al2O3含量的增加,微晶玻璃的主相由硅灰石转变为镁黄长石和钙铝黄长石。当Al2O3质量分数为15%时,析晶动力学参数k(Tp)最大,析晶能力强,此时微晶玻璃的晶粒尺寸为1～2μm左右,且晶相结构致密,其抗弯强度为49.85 MPa,显微硬度为3.60 GPa,抗压强度为181.47 MPa,符合建筑装饰用微晶玻璃的国家标准要求。
To prepare the glass-ceramics with high-additional-value using plenty of steel slag,modifier A and modifier B etc. solid waste containingiron, the influence of Al2O3 on glass-ceramics property from reduced slag after iron melt-reduction by means of DTA, XRD, SEM and so on. The results show that the main crystalphase of glass-ceramicst is wollastonite when the mass fraction of Al2O3 is 3%-6%, what＇s more, the crystal of glass-ceramicst is granular and crystal structure is loose, in which exists small holes ; with the increase of Al2O3 content, the main crystalphase transforms from the woUastonite into the akermanite and gehlenite. When the mass fraction of Al2O3 reach as high as 15%, the parameter k（Tp） of crystallization kinetics is maximum and the crystallization ability is the strongest as well, furthermore, the size of microcrystal glass grain is 1-2 μm or so and the phase structure of it is co MPact, meanwhile, the bending strength ,microhardness and compressive strength are respectively 49.85 MPa,3.60 Gpa and 181.47 MPa, which completely conform to the national standards of glass-ceramics which are made use of architectural decoration.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第4期758-762,771,共6页
Bulletin of the Chinese Ceramic Society
