微波烧结磁铁精矿

对3种磁铁精矿的微波烧结进行了基础研究．主要包括3个方面内容：不同微波处理时间、磁铁精矿中配加不同比例的碳粉以及磁铁精矿中配加不同比例的CaO，对样品微波加热及烧结的影响．研究结果表明：随着微波加热时间的延长，磁铁精矿温度逐步升高，到达一定高度后升温速率变缓；在相同微波加热条件下添加碳粉会降低样品的加热温度；在试样中CaO／SiO2为2．5、加热时间20min和微波输出功率1000W的条件下，可以获得具有一定强度的孔隙状烧结产物，但其强度与现有抽风烧结产品相差较大，其原因有待进一步研究．

Microwave Sintering of Magnetite Concentrates

A basic research about microwave sintering of three kinds of concentrate has been investigated.Three parameters are included: microwave heating time,carbon addition in sample,variable basicity(CaO/SiO_2).As the microwave heating time increased,the temperature of magnetite concentrates increased too,once the temperature reached a point,the temperature change slowed down.With the same microwave heating condition,to add carbon powder will decrease the heating temperature of sample.In the condition of that the basicity is 2.5,the heating time is 20 min,and the microwave output power is 1 000 W,the sinter product with hole can be got,but the density is lower compared with the regular sinter product,and the reason needs a further research.