<報文>チャー内装セメントボンドコールドペレットの強度と還元性

概要

論文の詳細を見る
In order to improve the performance of the direct reduction process, the development of burden materials having a good reducibility and strength is a major factor. From this standpoint, cement-bonded cold pellets containing char as burden material for direct reduction were produced, and reducibility and strength of the pellets were examined. It was found that the crushing strength of the pellets increased with increase in cement ratio and addition of water glass, and the hardening speed was remarkably increased by the hardening temperature. From the reduction experiments conducted under the conditions of both constant temperature of 850℃ and elevating temperature which is simulated to that of a moving bed reactor, the reduction rate of cement-bonded cold pellets containing char was larger than that of fired pellets and increased remarkably with increase in pressure. These phenomena are explainable by the rise of reduction potential by the reaction between char and reaction product gas at the reaction interface. Accordingly, it was concluded that the pellets might be applied effectively as burden materials for direct reduction process under high pressure.
東北大学の論文
1983-10-15