A method for quantitatively testing the content and embedded granularity of organic carbon in gold ore

By using palm wax binder and barite standard samples in combination with an automated process mineralogical testing system, accurate and efficient quantitative testing of organic carbon content and particle size in gold ore has been achieved, solving the problems of low testing efficiency and poor accuracy in existing technologies and providing reliable process mineralogical data support.

CN121558791BActive Publication Date: 2026-06-23METALLURGICAL LABORATORY BRANCH OF SHANDONG GOLD MINING TECHNOLOGY CO LTD +1
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Patent Information

Application Number
CN202610071771.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-01-20
Publication Date
2026-06-23
Estimated Expiration
2046-01-20

AI Technical Summary

Technical Problem

Existing technologies cannot accurately and efficiently measure the organic carbon content and particle size in gold ore simultaneously, resulting in a decrease in gold leaching rate. Existing methods are inefficient, the results are easily affected by human factors, and the errors are large.

Method used

Using palm wax as a binder, combined with barite standard samples, and employing an automated process mineralogical testing system, the precise identification and particle size distribution of organic carbon particles were achieved through scanning electron microscopy and energy dispersive spectroscopy. The organic carbon content was then calculated by combining the area ratio and density ratio.

Benefits of technology

It achieves an organic carbon content testing error of less than ±0.05% and a particle size testing error of less than ±0.5μm, improves testing efficiency by 3-10 times, provides highly objective and repeatable results, and provides comprehensive process mineralogical data to support the optimization of gold ore cyanide leaching processes.

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Abstract

The application discloses a method for quantitatively testing the content and embedded granularity of organic carbon in gold ore, and belongs to the technical field of gold ore detection. The method comprises sample preparation and quantitative testing. The sample preparation uses palm wax as a cementing agent and barite as a standard sample, and the sample to be tested is prepared through melting, mixing, solidification, polishing and carbon spraying. The quantitative testing is based on an automatic process mineralogy testing system, the palm wax background is removed through background deduction, a spectrum library is established to identify organic carbon and barite particles, the area ratio of the two is measured, the mass ratio is converted in combination with the density ratio, the content of organic carbon in the raw ore is inversely calculated, and the granularity distribution of the organic carbon is counted. The application solves the problem that the prior art cannot simultaneously accurately quantify the content and granularity of organic carbon, has the advantages of high testing precision, high efficiency, comprehensive parameters and simple operation, and can provide key data for optimizing the cyanide leaching process of gold ore.
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