检索结果-南通市图书馆

Studies on the Structure and Properties of Cordierite Synthesized by talc-magnesite

Chinese Journal of Structural Chemistry 2007年第6期26卷 732-736页

作者：武秀兰王芬任强 College of Material Science & Engineering Shaanxi University of Science & Technology

Homogeneous cordierite has been synthesized at low cost by talc-magnesite and coal gangue as the main raw materials. The mechanism of synthesizing cordierite under such a composing system of raw materials, and the effect of temperature on the crystal cell parameters and microstructure and thermal expansion coefficient of cordierite crystal have been studied via testing methods of XRD, SEM, etc. The result shows that the homogeneous cordierite can be synthesized by the systematic composing materials of ＂talc-magnesite-coal gangue-talc＂ with heat pre-servation at 1350 ℃ for 1 h; as the keeping time is prolonged, Al^3＋ and Mg^2＋ in cordierite crystal are replaced by a few impurity ions such as Fe^3＋, Fe^2＋, etc., and the crystal cell parameters of cordierite present an increase trend; as the high-temperature heat preservation is prolonged, the content of glassy phase in the sample is increased, its density is improved, and its thermal expansion coefficient presents an increase trend.

关键词： talc-magnesite reaction mechanism cordierite crystal cell parameters thermal expansion coefficient

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Characterization and processing of talc-magnesite from the Zinelbulak deposit

引用

Mining Science and Technology 2010年第3期20卷 415-420,433页

作者： HOJAMBERDIEV Mirabbos ARIFOV Pulat TADJIEV Kamil XU Yunhua New York State College of Ceramics Alfred University Alfred 14802 USA Institute of General and Inorganic Chemistry Uzbekistan Academy of Sciences Tashkent 100170 Uzbekistan Institute of Wear Resistance Material Xi'an University of Architecture and Technology Xi 'an 710055 China

The characteristics of talc-magnesite from the Zinelbulak deposit(Uzbekistan) were investigated via X-ray diffraction, differential thermal analysis,infrared spectroscopy and optical *** mineralogical composition of the Zinelbulak talc-magnesite consists of 52 wt.%talc,43 wt.%carbonates and 5 wt.%of the iron-containing minerals magnetite,siderite and *** analysis confirmed the presence of carbonates in two forms:magnesite and *** tests revealed that talc and magnesite particles are completely separated after a grinding process carried out for 10～12 *** distribution of the yield of talc and magnesite,as a function of the particle size,shows an irregular feature in that a comparatively coarser sample(>0.1 mm) is richer in magnesite and poor in talc while a comparatively finer sample(talc-magnesite was tested using conventional gravity concentration,flotation and electromagnetic *** concentration was found to be the most economic initial process for the complete separation of magnesium carbonate and *** flotation and magnetic separation techniques could further increase the yield of high quality magnesite and *** samples prepared by heating the separated magnesite at 1600℃for 2 h met the State Standards for refractory materials.

关键词： talc-magnesite grinding froth flotation gravity concentration magnetic separation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：