铜精矿中铜品位化验结果产生偏差的原因分析

Analysis on the Cause of Deviation of the Results of Copper Grade Test in Copper Concentrate

大宝山矿由黑色矿山转为有色矿山,7 000 t/d新选厂的建成大大提高铜精矿的产量,为了指导选厂生产和提高销售质量,铜精矿中铜品位的化验尤为重要.文章按照国家标准GB/T3884.1-2012《碘量法测定铜精矿中铜的含量》的方法,对整个化验过程详细分析,从溶液的酸碱度、硫代硫酸钠标准溶液的浓度、硫代硫酸钠标准溶液的标定周期、碘化钾的添加形式等方面进行研究,找出了化验结果产生偏差的原因,提高了化验人员的分析水平,为生产和销售提供准确的分析数据.

The Dabaoshan Mine in Guangdong Province was transfomled from a black mine into a non-felTous mine. The construction of the 700 t/d new separation plant will greatly improve the production of copper concentrate, copper grade tes- ting is particularly important for guiding the production of copper concentrate and enhancing the quality- of sales. According to the method of national standard GB/T3884.1-2012 for the determination of copper content in copper concentrate, this paper analyzes the whole process in detail, and finds out the cause of the deviation from the results of the analysis, which provides the accurate data for production and sales.