Effect of the vacuum value in the sediment collection zone on the filtration parameters of flotation concentrates of non-ferrous metal ore in a ceramic disk vacuum filter

One of the main technological processes that determine the effectiveness of hydrometallurgical schemes in non-ferrous metallurgy, chemical, processing and a number of other industries is the filtration of technological pulps and waste solutions (or slurries) that pose a great danger to the environment, primarily due to the presence of chemically active substances and heavy metals in them. The article presents the results of a comparative study on the filtration of copper and nickel concentrates in a KDF-0.5r pilot plant with different vacuum values in the sediment collection zone. It has been experimentally proven that reducing the vacuum level in the sediment collection zone from –0.9 bar to –0.6 bar reduces cake moisture from 13.3 to 12.5%, while simultaneously increasing specific productivity by 50% (from 140 to 210 kg/(m2·h)) for flotation copper concentrate. The practical significance of the study lies in recommendations for the introduction of a vacuum reduction mode in the recruitment area at similar installations to reduce humidity and increase production profitability.

Dmitrakova U. V., Nikolaev A. A., Chylbak-ool E. D., Konyukhov Yu. V., Ikonnikov K. I. Effect of the vacuum value in the sediment collection zone on the filtration parameters of flotation concentrates of non-ferrous metal ore in a ceramic disk vacuum filter. MIAB. Mining Inf. Anal. Bull. 2025;(9-1):75-89. [In Russ]. DOI: 10.25018/0236_1493_2025_ 91_0_75.

U.V. Dmitrakova¹, Head of the Research Center for Innovative Solutions for Dewatering and Enrichment, e-mail: dmitrakova@ntcbakor.ru, ORCID ID: 0009-0009-5494-043X,
A.A. Nikolaev², Cand. Sci. (Eng.), Assistant Professor, Assistant Professor, e-mail: nikolaevopr@mail.ru, ORCID ID: 0000-0003-1687-2332,
E.D. Chylbak-ool^1,2 Researcher; Graduate Student, e-mail: chylbak-ool@ntcbakor.ru,
Yu.V. Konyukhov², Dr. Sci. (Eng.), Assistant Professor, Head of Chair, e-mail: ykonukhov@misis.ru,
K.I. Ikonnikov¹, Cand. Sci. (Eng.), Head of the Scientific Research Center for Special Ceramics, e-mail: konst@ntcbakor.ru,
¹ Bakor Scientific and Technical Center, 108851, Moscow, Russia,
² NUST MISIS, 119049, Moscow, Russia.

U.V. Dmitrakova, e-mail: dmitrakova@ntcbakor.ru.

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