Compound collectors based on oil products for frother separation of diamond-bearing kimberlites

Performance of frother separation of diamond-bearing ore can be enhanced through the use of effective collectors. The research findings show that such compound collectors for frother separation of diamonds can be produced from mixing of oil products and oil at certain ratios maintained between the main fractions of light distillates, petroleum oils, resins and asphaltenes. For the activity tests of compound collectors, bunker oil and activated water-in-oil emulsions WOE-U and WOE-10 from Udachny and Internatsionalny mines, respectively, were mixed at various ratios and were used in the tests as collecting agents. The highest diamond recovery in the frother separation concentrates is achieved when the mass fractions of light distillates is 35–48%, petroleum oils—32–40%, and resin and asphaltenes—17–24%. A nearly optimal fractional makeup of a compound collector and the higher diamond recovery is obtained in frother separation with a mix of diesel fuel, bunker oil and water-in-oil emulsions. The resultant diamond concentration after frother separation with the WOE–diesel fuel compound collector exceeds the diamond recovery with bunker oil F-5 by 1.1–1.5%. The test results allow recommending the compound collectors of the proposed fractional makeup for the efficient frother separation of fine diamonds from diamond-bearing kimberlites.

Morozov V. V., Lezova S. P. Compound collectors based on oil products for frother separation of diamond-bearing kimberlites. MIAB. Mining Inf. Anal. Bull. 2020;(12):137-146. [In Russ]. DOI: 10.25018/0236-1493-2020-12-0-137-146.

V.V. Morozov¹, Dr. Sci. (Eng.), Professor, e-mail: dchmggu@mail.ru,
S.P. Lezova¹, Senior Lecturer, e-mail: svlezova@mail.ru,
¹ National University of Science and Technology «MISiS», 119049, Moscow, Russia.

V.V. Morozov, e-mail: dchmggu@mail.ru.

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