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近几年来的研究结果和矿热炉生产铁合金的实践表明,使用较冶金焦比电阻更高的一些炭素材料作还原剂,获得了很大效果。炭素还原剂的比电阻通常是采用双探针法测定。这种方法被广泛地应用于实验室条件和生产实际中。实验室测定装置及其原理电路图如图所示。测量筒1和底座3是用电气绝缘材料制成的;上电极5和下电极9是用钢材制成,而降电位用电极2则是用铜带
The results of recent studies and the practice of producing ferroalloys in submerged arc furnaces show that the use of some carbon materials with higher coke resistance than metallurgical coke as reductant achieves great results. The specific resistance of the carbon reducing agent is usually measured by the dual probe method. This method is widely used in laboratory conditions and production practice. Laboratory measurement device and its principle circuit shown in the figure. The measuring cylinder 1 and the base 3 are made of electrically insulating material; the upper electrode 5 and the lower electrode 9 are made of steel while the electrode 2 for lowering the potential is made of copper