散装红土镍矿取制样方法研究

针对红土镍矿的地质化学特性，结合我国进口的红土镍矿主要为高铁低镁的褐铁矿型特点， 参照ISO、中国和日本相关制取样标准，通过大量现场试验的统计数据，建立了精密度较高、科学可行的散装红土镍矿取制样方法。用该方法对一船由印尼进口的红土镍矿制取样，然后进行检测，根据样品中镍、铁、水分检测结果得到的制取样方法精密度（β_S）值和总精密度（β_SPM）值均较小，且符合货物的品质波动规律，表明制得的样品具有较好代表性和可靠性，方法可用于我国进口的红土镍矿取制样。

Research on sampling and sample preparation method for bulk laterite nickel ore

In view of the geochemical characteristics of laterite nickel ore and the feature of containing mainly a high iron and low magnesium limonite in imported laterite nickel ore in China, a high precision and feasibility sampling and sample preparation method of bulk laterite nickel ore was established through a large amount of on-site experimental statistic data and reference to related sampling and preparation sample method of ISO, China, Japan. The proposed method was emplayed for sampling and sample preparation of a boat of laterite nickel imported from Indonesia. Through the determination of nickel,iron and water, it was found the sampling and preparation method precision(β_s)and total precision (β_spm) were all small and fit for the quality fluctuation law of goods, indicating a fine representativeness and reliability. The method is applicable to the sampling and sample preparation of imported nickel ore of China.