... reduction of dissolved oxygen 溶解氧的还原 reduction of ore 矿石还原 reduction of porosity 孔隙度降低 ...
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依据矿石失重实验数据可计算反应率的大小及其变化关系，并可分析矿石还原过程速率的限制性环节及矿石的还原性。
From the da ta of weight-loss experiment, the rate of reaction and the variation of this rate with time can be calculated. The controlled step of reducing process can be determined also.
实验结果表明，矿石结构、孔隙度和颗粒的大小对还原率有明显的影响。
Experimental results showed that the structure, porosity and particle size of ludwigite ores have a significant effect on the reduction rate.
用光学显微镜和扫描电镜观察了还原后矿石的微观结构变化，电镜下观察到“铁晶须”的存在。
Microstructural observations by microscope and SEM show that there exist whiskers in the ore after reduction.
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