2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 8: Non-ferrous, Rotary Kiln, Ferro-alloys, Rare Earth, Coal
| Editors: | Kongoli F, Xueyi G, Shumskiy V, Kozlov P, Capiglia C, Silva AC, Turna T |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 350 pages |
| ISBN: | 978-1-987820-50-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
CD shopping page
Effect Of Various Components On Linear And Volumetric Expansion Of SiO2
Gerson J. Centty Portugal1; Florian Kongoli2;1FLOGEN TECHNOLOGIES INC., Arequipa, Peru; 2FLOGEN TECHNOLOGIES INC., Mont-Royal, Canada;
Type of Paper: Regular
Id Paper: 178
Topic: 6
Abstract:
SiO2 is used in various smelting reactors as a major constituent of refractories and as a chemical flux. Its mechanical properties are affected by numerous impurities such as Na2O, K2O, MgO, CaO, Fe2O3 and Al2O3. As part of a wider project, this work studies the effect of various network modifiers in SiO2 linear and volumetric expansion. The experiments were carried out using solid cylindrical pressed samples of various mineralogical compositions but identical in size, weight, volume and area. These samples were held inside an electric furnace in laboratory at different temperature within the 1200°C-1260°C range interval keeping the time constant for all heats. After the tests the linear expansion was quantified using the variation of the diameter of the circular surface of the cylindrical sample and volumetric expansion was quantified using the difference of total volume of the cylindrical samples after heating. The results were analyzed, a model was created and various conclusions on the individual effect of each impurity as well as various ratios between them and SiO2 were drawn.