As charcoal is used in the silicon metal process, reactivity towards SiO is one of the most important properties that has strong effects on silicon recovery. The purpose of this study was to analyze anatomical properties of wood and charcoal, define a procedure to express the SiO reactivity in a simpler and more cost-efficient manner and indicate one or more clones of Eucalyptus with the greatest potential for production of charcoal to silicon use. Three hybrid clones of Eucalyptus urophylla × Eucalyptus grandis were used for the study and the coke was investigated for comparison purposes. Morphological analysis of fiber and vessels was carried out in wood, and the fiber wall area was determined on charcoal. The number of reactivity was calculated in five different protocols, based on the SiO reactivity test. To classify the charcoal with the greatest potential for silicon use, the parameter Readily Available Fixed Carbon Stock was created, based on charcoal`s most important properties. All charcoals had significantly higher SiO-reactivity than coke. In addition, an increasing trend of charcoal SiO-reactivity was found with decreasing wood basic density, apparent density and fiber wall area of charcoal, which are connected to porosity. All the reductant materials presented similar readily available fixed carbon stock. The developed procedure used for SiO reactivity measurements was a useful tool to classify charcoal for use in the silicon production process.

由于在硅金属工艺中使用木炭，因此与SiO的反应性是对硅回收率产生强大影响的最重要的特性之一。这项研究的目的是分析木材和木炭的解剖特性，定义一种以更简单和更具成本效益的方式表达SiO反应性的程序，并指出一个或多个桉木无性系具有最大的生产木炭到硅的潜力使用。尾叶桉×桉树三个杂种无性系进行了研究，并对焦炭进行了比较研究。在木材中进行纤维和容器的形态分析，并在木炭上确定纤维壁面积。根据SiO反应性测试，通过五种不同的方案计算了反应性数。为了对具有最大使用潜力的木炭进行分类，基于木炭最重要的特性，创建了参数“ Readyly Available Fixed Carbon Stock”。所有木炭均具有比焦炭高得多的SiO反应性。另外，发现木炭SiO反应性的增加趋势是随着木材的基本密度，表观密度和木炭纤维壁面积的降低而降低的，而木炭密度，孔隙率和孔隙率与孔隙率有关。所有的还原剂材料都具有相似的，易于获得的固定碳库。