摘要
依据GB/T 2007.3-1987标准要求对10交货批散装红土镍矿进行了品质波动试验,得出特性值镍的标准偏差估计值σW在0.10-0.23之间,据此将品质波动划分为"大"、"中"和"小"三种类型,σW≥0.20%为"大"、0.20>σW>0.15为"中"、σW≤0.15为"小"。
According to GB/T 2007.3-1987 standard requirements, the quality variation test of ten lots of laterite nickel ore in bulk were carried out. The results of characteristic value, nickel standard deviation estimator were between 0.10 and 0.23. It was divided into “large”, “moderate” and “mild”. Those were ≥0.20% for the “large”, 0.20〉 and 〉0.15 for “moderate”, ≤0.15 for“ mild”.
出处
《检验检疫学刊》
2013年第4期32-34,16,共4页
Journal of Inspection and Quarantine
基金
国家质检总局科研项目(2009IK072)
检验检疫行业标准制订项目(2010B253k)
关键词
散装
红土镍矿
品质波动
标准偏差
评定
Laterite Nickel Ores
In Bulk
Quality Variation
Standard Deviation
Evaluation
