Making-out and use of commodity balance at processing plant

Authors: Komlev A.S.

A commodity balance is a monthly report of performance of a processing plant. Making-out of a commodity balance follows standards of effective regulatory documents. The processing plant commodity balance features imbalance of certain value and sign. A commodity balancer should be made out based on the measurements of mass of processing products, mass fraction of valuable components and moisture. Many processing plants make out commodity balances not as established by regulatory documents. This results in wrong variation in the vale and sign of the imbalance, and the commodity balance loses its meaning of a quality indicator of a processing technology and sampling. The variation in the imbalance is a systematic error. The same takes place in adjustment of mass fraction of valuable components in ore and in tailings. Adjustment is dictated by regulatory documents if the allowable imbalance is exceeded by 2–3%. Commodity balances are made out only using measured indices at processing plants. Mass fractions of valuable components in ore and tailings may remain unadjusted even in case when the allowable limit is exceeded. The causes of the overshoot should be studied and eliminated.

Keywords: commodity imbalance, mass measurement, sampling results, valuable component mass, mass fraction adjustment, systematic errors.
For citation:

Komlev A. S. Making-out and use of commodity balance at processing plant. MIAB. Mining Inf. Anal. Bull. 2021;(11-1):276—284. [In Russ]. DOI: 10.25018/0236_1493_2021_111_0_276.

Acknowledgements:
Issue number: 11
Year: 2021
Page number: 276-284
ISBN: 0236-1493
UDK: 622.7.09:620.113
DOI: 10.25018/0236_1493_2021_111_0_276
Article receipt date: 25.05.2021
Date of review receipt: 21.06.2021
Date of the editorial board′s decision on the article′s publishing: 10.10.2021
About authors:

Komlev A. S., Cand. Sci. (Eng.), Senior Researcher, e-mail: tails2002@inbox.ru, Ural State Mining University, Mineral Processing Department, ul. Kuibysheva 30, Yekaterinburg, 620144 Russia.

For contacts:
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