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

A method of determination, cobalt ore technology, applied in the field of determination of cobalt content in cobalt ore, can solve problems affecting the accuracy of test results, etc., and achieve the effects of easy promotion, high precision, and large measurement range

Active Publication Date: 2013-05-08
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the high content of Cu 2+ , Fe 3+ Affect the accuracy of test results

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The weight content of iron in the selected cobalt ore sample is 5.364%, and the weight content of copper is 15.21%;

[0033] Take 0.1008g of cobalt ore sample in a 250mL beaker, add 20mL of aqua regia, and then heat it to 280°C to keep it warm. During the heat preservation process, yellow smoke is generated. When the yellow smoke disappears, stop heating to obtain the mineral sample solution;

[0034] Add 6mL mixed acid solution to the mineral sample solution, and then heat to 320°C. When the space above the mineral sample solution in the beaker is filled with white smoke, stop heating and cool to room temperature to obtain a shielded iron ore sample solution; the mixed acid solution is obtained by A sulfuric acid solution with a mass percentage of 98% and a phosphoric acid solution with a mass percentage of 85% are mixed at a volume ratio of 1:1;

[0035] Add 30mL of water to the shielded iron ore sample solution, heat it to 280°C, and then add a sodium thiosulfate sol...

Embodiment 2

[0044] The weight content of iron in the selected cobalt ore sample is 30.549%, and the weight content of copper is 22.376%;

[0045] Take 0.0820g of cobalt-containing ore sample in a 250mL beaker, add 55mL of aqua regia, and then heat it to 210°C to keep it warm. During the heat preservation process, yellow smoke is generated. When the yellow smoke disappears, stop heating to obtain the mineral sample solution;

[0046] Add 10mL mixed acid solution to the ore sample solution, and then heat to 350°C. When the space above the ore sample solution in the beaker is filled with white smoke, stop heating and cool to room temperature to obtain a shielded iron ore sample solution; the mixed acid solution is prepared by A sulfuric acid solution with a mass percentage of 98% and a phosphoric acid solution with a mass percentage of 85% are mixed at a volume ratio of 1:1;

[0047] Add 25mL of water to the shielded iron ore sample solution, heat to 200°C, and then add sodium thiosulfate so...

Embodiment 3

[0056] The weight content of iron in the selected cobalt ore sample is 34.93%, and the weight content of copper is 20.153%;

[0057] Take 0.2501g of cobalt ore sample in a 250mL beaker, add 60mL of aqua regia, and then heat it to 200°C to keep it warm. During the heat preservation process, yellow smoke is generated. When the yellow smoke disappears, stop heating to obtain the mineral sample solution;

[0058] Add 15mL mixed acid solution to the ore sample solution, and then heat to 300°C. When the space above the ore sample solution in the beaker is filled with white smoke, stop heating and cool to room temperature to obtain a shielded iron ore sample solution; the mixed acid solution is prepared by A sulfuric acid solution with a mass percentage of 98% and a phosphoric acid solution with a mass percentage of 85% are mixed at a volume ratio of 1:1;

[0059] Add 20mL of water to the shielded iron ore sample solution, heat to 230°C, and then add sodium thiosulfate solution with ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/31G01N1/28
Inventor 杨洪英骆新耿李海军朱景和范有静陈国宝佟琳琳
Owner NORTHEASTERN UNIV LIAONING
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