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竖炉磁化焙烧已有几十年的科研和生产实践的历史,各项生产技术指标逐步有所改善,但燃料消耗费用仍是竖炉生产成本较高的主要因素。因此,降低燃料消耗,减少燃料费用,进一步降低生产成本,对于促进竖炉生产的发展有着重要意义。铁矿石竖炉磁化焙烧,如同其它焙烧方法一样,其燃料消耗主要为两部分:一部分用于矿石的加热,一部分用于被加热矿石的还原,把赤铁矿还原成磁铁矿,以供下一步在弱磁场磁选机中进行选别。一般来说,加热一吨矿石所需要的热量为11～13万大卡,还原一吨矿石的燃料,因矿石性质和燃料的有效成分不同而有所差别(表1)。在计算磁化焙烧的热平衡时,除了矿石加
Shaft furnace magnetization roasting has decades of history of scientific research and production practices, the production of technical indicators have gradually improved, but the cost of fuel consumption is still the shaft furnace production costs higher than the main factor. Therefore, to reduce fuel consumption, reduce fuel costs and further reduce production costs, for promoting the development of shaft furnace is of great significance. Iron ore shaft furnace magnetization roasting, as with other roasting methods, the fuel consumption is mainly two parts: one for the ore heating, one for the reduction of heated ore, the reduction of hematite to magnetite for Next in the weak magnetic field magnetic separator for sorting. In general, the amount of heat required to heat a ton of ore is between 11 and 130 kcal. The fuel that reduces one ton of ore varies depending on the nature of the ore and the active ingredients of the fuel (Table 1). In calculating the heat balance of magnetization roasting, except ore plus