Experiments of electric furnace simulator for property prediction of the artificial lightweight aggregate sintered by rotary kiln
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If the properties of artificial lightweight agregates produced by rotary kiln can be predicted by using asimulator equipped with a small electric furnace and a specially designed device for specimen movement, large amount ofraw materials and plenty of test time can be saved to produce test products of lightweight aggregates. In this study aown design and the properties of lightweight aggregates produced by both the simulator and rotary kiln were compared tospeculate its usefulness. The average diameter of aggregates was 8 m and atmosphere in the furnace was controled bythe amount of carbon powders. Specific gravity, absorption rate (%), black-core area in the cross-sectional view of bothaggregates were measured and compared. Unlike oxydizing atmosphere, both specific gravity and absorption rate of theagregates sintered at reducing atmosphere were increased with increasing carbon addition. It is concluded that the sinteringatmosphere was the closest to that of the rotary kiln when the carbon adition was 0.7 g to make a reducing atmospherein the furnace and the porperties of both agregates was also similar to each other. Key words Rotary kiln, Lightweight aggregate, Simulator, Sintering atmosphere
Abstract
If the properties of artificial lightweight agregates produced by rotary kiln can be predicted by using asimulator equipped with a small electric furnace and a specially designed device for specimen movement, large amount ofraw materials and plenty of test time can be saved to produce test products of lightweight aggregates. In this study aown design and the properties of lightweight aggregates produced by both the simulator and rotary kiln were compared tospeculate its usefulness. The average diameter of aggregates was 8 m and atmosphere in the furnace was controled bythe amount of carbon powders. Specific gravity, absorption rate (%), black-core area in the cross-sectional view of bothaggregates were measured and compared. Unlike oxydizing atmosphere, both specific gravity and absorption rate of theagregates sintered at reducing atmosphere were increased with increasing carbon addition. It is concluded that the sinteringatmosphere was the closest to that of the rotary kiln when the carbon adition was 0.7 g to make a reducing atmospherein the furnace and the porperties of both agregates was also similar to each other. Key words Rotary kiln, Lightweight aggregate, Simulator, Sintering atmosphere
참고문헌 (7)
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