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为了寻找比目前工业上采用的二步法更经济的、用我国低质高磷锰矿生产锰铁的途径,通过实验室研究探索了锰铁脱磷的方法。试验结果指明,对铁水脱磷很有效的苏打渣处理,对液态锰铁的脱磷效果很差,但在900℃左右,能对粒状锰铁起显著脱磷作用,脱磷率约60～70％,满足炼钢锰铁的要求。发现在1500℃左右,电石渣对液态锰铁也能达到满意的脱磷,而且对中、低碳锰铁比对碳素锰铁效果更好(前者脱磷率约80％,后者脱磷率约40％,但也已足够),但在石墨容器中基本不能脱磷。其他还原性物质如金属铝能脱磷25％,钙硅合金能脱磷70％以上。拟在这些试验结果的基础上作进一步的发展研究。文中还从热力学的观点对试验结果作了解释。
In order to find a more economical way than the two-step method currently used in industry, the method of ferromanganese dephosphorization was explored through laboratory research by means of producing ferromanganese from low-grade high-phosphorus ferromanganese in China. The test results show that the soda slag treatment, which is very effective for dephosphorization of molten iron, has a very poor dephosphorization effect on liquid ferromanganese. However, about 900 ° C, it can dephosphorize the granular ferromanganese remarkably, and the dephosphorization rate is about 60-70 %, To meet the requirements of steelmaking ferromanganese. It was found that at about 1500 ℃, carbide slag can achieve satisfactory dephosphorization for liquid ferromanganese, and the effect of medium and low carbon ferromanganese is better than that of carbon ferromanganese (the former dephosphorization rate is about 80%, the latter dephosphorization About 40%, but also enough), but basically can not dephosphorization in graphite containers. Other reductive substances such as aluminum can be dephosphorized 25%, calcium-silicon alloy dephosphorization more than 70%. It is proposed that further development studies be based on the results of these experiments. The article also explained the test results from the thermodynamic point of view.