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建立了烧结过程传热模型,利用Fluent软件对常规烧结及以10%,20%,30%(等能量输出)竹炭和板栗壳炭替代常规燃料进行烧结的温度场进行数值求解,计算值与测定值对比验证模型的可靠性,以料层最高温度和料层冷却速率对各方案进行评价.结果表明,竹炭和板栗壳炭20%替代方案最高温度高于1573 K时的料层厚度分别为0.49和0.47m,大于常规烧结及10%和30%替代方案,能有效提高烧结矿成块固结量;竹炭和板栗壳炭30%替代方案料层冷却速率小于120 K/min时的料层厚度分别为0.458和0.480 m,大于常规烧结及10%和20%替代方案,有助于提高烧结矿机械强度;用燃点较高的生物质炭替代常规燃料有利于提高料层最高温度,用燃点较低的生物质炭替代常规燃料有利于加快烧结速率.
The heat transfer model of sintering process was established, and the temperature field of conventional sintering and conventional sintering with 10%, 20%, 30% (equal energy output) charcoal and chestnut shell charcoal instead of conventional fuel was numerically solved by Fluent software. The calculated values and the measured values The results show that when the maximum temperature of 20% bamboo charcoal and chestnut shell charcoal is higher than 1573 K, the thickness of the material layer is 0.49 And 0.47m, respectively, which is larger than conventional sintering and 10% and 30% alternatives, which can effectively increase the amount of agglomeration and agglomeration of sinter; the 30% alternative of charcoal and chestnut shell charcoal material layer thickness when the material cooling rate is less than 120 K / min Respectively 0.458 and 0.480 m, which is larger than that of conventional sintering and 10% and 20% alternatives, which helps to improve the mechanical strength of sinter. Replacing conventional fuels with higher burning biomass carbon helps to increase the maximum temperature of the material layer. Low biomass carbon to replace conventional fuels helps to speed up the sintering rate.