摘要
在鼓风炉渣含杂分析中,将鼓风炉渣试样分解制成溶液后,测定溶液中某一成分时常常受到共存组分的干扰,影响测定结果准确性,甚至无法测定。因此测定时必须设法消除干扰元素或者将干扰组分预先分离,然后再进行测定。以鼓风炉渣为研究对象,根据鼓风炉渣组分的性质选择合理的分析方法,SiO_(2)的测定采用重量法,是基于熔融物在酸性溶液中析出沉淀,试样经碱熔后加入大量盐酸,溶液中析出了含有大量水分子的无定形硅酸沉淀且沉淀不完全。滤液作为Fe、CaO、MgO的母液,对Fe、CaO、MgO的百分含量进行测定。采用铜氨离子的介入,使鼓风炉渣分析中CaO、MgO的终点变化敏锐,得出稳定、可靠的分析数据,从而为冶炼工艺配料提供科学、准确的指导依据。
In the impurity analysis of blast furnace slag,after the slag sample is decomposed into a solution,the determination of a certain component in the solution is often interfered by the coexisting components,which affects the accuracy of the determination results,or even cannot be determined.Therefore,the interfering elements must be eliminated or the interfering components must be separated in advance before the determination.Take slag blowing as the research object,and select a reasonable analysis method according to the properties of slag components.The determination of SiO_(2)adopts the gravimetric method,which is based on the precipitation of molten substances in acidic solution.After alkali melting,a large amount of hydrochloric acid is added to the sample,and amorphous silicic acid precipitation containing a large amount of water molecules is precipitated in the solution and the precipitation is incomplete.As the mother liquor of Fe,CaO and MgO,the filtrate is used to determine the percentage content of Fe,CaO and MgO.The intervention of copper and ammonia ions makes the end points of CaO and MgO in slag blowing analysis change sharply,and obtains stable and reliable analysis data,thus providing scientific and accurate guidance for smelting process proportioning.
作者
张胜男
ZHANG Sheng-nan(Fushun Hongtoushan Mining Co.,Ltd.,China Nonferrous Metals Group,Fushun 113321,China)
出处
《有色矿冶》
2023年第1期57-59,共3页
Non-Ferrous Mining and Metallurgy
关键词
鼓风炉渣
熔融
铜氨离子
测定
blast furnace slag
melt
cuprammonia ion
determination
