کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1464144 989657 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Recycled wastes as precursor for synthesizing wollastonite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Recycled wastes as precursor for synthesizing wollastonite
چکیده انگلیسی

The application of wollastonite in various industries has attracted the attention of scientists to synthetically produce it. Also, the ecological demands of a healthy and safe environment urged them to utilize the industrial wastes accumulating year after year and threatening the environment.Therefore, three groups of experiments were designed to prepare wollastonite based on the application of natural stone processing wastes and silica fumes as well as pure chemicals. The high degree of fineness of the waste precursors and the presence of impurities in the form of alkali and iron oxides enhanced the formation of wollastonite at 1100 °C. While, the pure precursors failed to give wollastonite even after firing at 1400°C.Different ratios of CaO:SiO2 comprising 1:1, 1:1.125, 1:1.166 and 1:1.25 were studied. XRD results revealed that the ratio 1:1.125 gives wollastonite as a sole phase. Lower and higher ratios cause the formation of other calcium silicate phases or free cristobalite.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 34, Issue 1, January 2008, Pages 101–105
نویسندگان
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