Determination method for cobalt content in high-copper high-iron cobalt ores

Abstract

Provided is a determination method for cobalt content in high-copper high-iron cobalt ores. The method comprises the following steps: (1) taking 0.0100 to 0.2500 g of cobalt ores to prepare an ore sample solution; (2) adding a mixed acid solution into the ore sample solution, and carrying out heating to prepare a shielding iron ore sample solution; (3) removing copper to obtain a copper removal solution; (4) carrying out chromogenic treatment on the copper removal solution to obtain a solution to be determined; (5) preparing a blank solution; (6) preparing a standard solution; (7) drawing a standard curve, and determining cobalt content in the solution to be determined based on the standard curve, thereby determining cobalt content in the a sample of cobalt ores. The method provided in the invention can be used for determining copper- and iron-rich cobalt ores which contain 5 to 35% of Fe, 15 to 30% of Cu and 0.001 to 5% of Co. In the process of determination, no toxic reagents are used, and a treating process is simple and is easy to popularize.

Description

technical field

[0001] The invention relates to a detection method for ore component content, in particular to a detection method for cobalt content in high-copper and high-iron cobalt ore. Background technique

[0002] At present, the determination methods of cobalt content in ores mainly include: iodometric method, 1-nitroso-2-naphthol photometry, atomic absorption spectrometry, 5-Cl-PADAB photometry, nitroso-R salt photometry wait.

[0003] The iodometric method is generally suitable for the determination of cobalt above 5%, which cannot meet the determination requirements of low-grade cobalt ore, and the highly toxic arsenic trioxide is used in the process, which is easy to pollute the environment. The 1-nitroso-2-naphthol spectrophotometric method is not suitable for the analysis of cobalt in ores with a Cu content higher than 1%, and there is a loss of Co in the extraction step in the process, and the measurement results are not accurate. Atomic absorption spectromet...

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