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 ?

The Bulk Flotation flowsheet, which is already in the Base Case, will be pilot tested over the coming months in order to fully de-risk it.

OZL - West Musgrave Pre-Feasibility Study Progress Update

Following grinding, the process flowsheet incorporates conventional bulk flotation including rougher flotation followed by two stages of cleaning to produce a gold-bearing sulphide concentrate representing about 3.5% of the fresh feed weight.

Spanish Mountain Gold Announces Confirmation of Metallurgical Results

Ore processing contemplates a single-stage crush, various stages of milling, bulk flotation roughing, various stages of copper cleaning, and regrind to produce a single copper concentrate containing gold.

Hod Maden Project in Turkey Targets 200,000 oz/y of Gold

Combined gold recovery for both gravity and bulk flotation processes in the current test work is estimated at 82 percent for zone 103 and 89 percent for zone 104 and compares well with the previous metallurgical results of 2013.

Canada : Comstock Reports Positive Metallurgical Test Results for Its Preview Project, Saskatchewan

The overarching goal of this work was to test the possibility of replacing sodium cyanide by chitosan polymer as a selective pyrite depressant in the bulk flotation of complex sulfide ore sample containing galena (PbS), chalcopyrite (CuFe[S.sub.2]), sphalerite (ZnS), pyrite (Fe[S.sub.2]), dolomite (CaMg[(C[O.sub.3]).sub.2]), and marcasite (a polymorph of pyrite).

Flotation Behavior of Complex Sulfide Ores in the Presence of Biodegradable Polymeric Depressants

Extremely fine intergrowth between galena and sphalerite minerals inhibits selective flotation separation and favours bulk flotation. Due to fine dissemination and interlocking of minerals, extensive fine grinding is often needed, which is energy intensive.

Beneficiation studies on low-grade complex polymetallic lead-zinc ore of Duddar (Lasbela) Balochistan, Pakistan

Bench scale testing has been largely completed and testing moved on to bulk flotation trails.

Archer Exploration Limited (ASX:AXE) Half Yearly Report and Accounts

This collector has found application in the bulk flotation of copper and cobalt minerals in conjunction with other thiol collectors, usually at slightly lower than pH than other common thiol collectors.

Cheminova

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.

Archer Exploration Limited (ASX:AXE) Exceptional Bulk Flotation Results For Campoona Graphite

PPL's expanded plant, simply put, now consists of a new circuit that is essentially a pebble flotation circuit and the old circuit, which is a bulk flotation circuit.

Plant optimisation at PPL

In bulk flotation or differential depression circuits where two or more minerals have been floated simultaneously, it may be advantageous or necessary to recondition the product and refloat the concentrate to separate the individual minerals.

Using activated carbon to improve flotation

* At a number of concentrators, new effective reagent regimes have been introduced for the separation of bulk flotation concentrates, plant operation now incorporating full water recycling.