bulk flotation

bulk flotation

[¦bəlk flō′tā·shən]
(mining engineering)
The rising of a mineralized froth, of more than one mineral, in a single operation.
References in periodicals archive ?
HOUSTON -- Brazauro Resources (TSX VENTURE:BZO) is pleased to announce very positive results from bulk flotation and cyanidation tests on gold ore from the Company's Tocantinzinho Gold Project in Brazil, as performed and reported by Hazen Research, Inc.
Confirm that the high copper and gold extraction results obtained in earlier batch testing (approximately 95% Cu, and 90-95% Au) could be achieved on a range of Chelopech concentrates, including future concentrate samples derived from bulk flotation of representative composites of drill core from the three major ore zones of the deposit.
Metallurgical testwork completed to date on drill samples has been encouraging as well with 90% of copper, gold, silver and zinc contents of the feed samples reporting to a bulk flotation concentrate.
G&T") in Kamloops, British Columbia, Canada for preparation of the necessary bulk flotation samples for the pilot plant program.
KUC invested $82 million on an improvement project in 2004 to expand and modernize the bulk flotation process at KUC's Copperton Concentrator.
Approximately two tonnes of bulk flotation concentrate will be treated in the SGS mini-pilot plant in April/May 2005 to examine each of the hydrometallurgical unit processes in an integrated and continuous circuit.
A bulk flotation concentrate sample from the pilot plant test work was leached under intensive cyanidation conditions to produce solution for metal recovery test work using direct electrowinning.
The Company has commenced commissioning of the bulk flotation process in the oxide plant, designed to recover additional gold from pyrite.
In addition batch rougher bulk flotation tests were conducted on the ground composite to evaluate the primary grind, collector type and dosage, and activators through kinetic rate tests.
It is usual when moving from bench-scale to bulk flotation that there is a drop-off in performance both in terms of the grade of the concentrates and the recovery of graphite.
In 2006, an $82 million investment was announced to expand and modernise the bulk flotation process at KUC's Copperton Concentrator.