Quinn Process Equipment Company-- Flotation Equipment Manufacturing Experience

Since 1973, we at QPEC have manufactured "Sub-A" type flotation cells in both "cell to cell" and "open-flow" design, in sizes from 0.3 cubic feet per cell to 24 cubic feet per cell. These cells do not require blower added air as they are self aspirating. QPEC's "cell to cell" design allows for a great deal of "slurry to air" contact in the impeller/diffuser region, and also provides much greater control over the air addition to the cell, which can be critical in the efficiency and performance of the actual flotation and also in the ability to suspend the solids within the cell to avoid sanding in the cell.

QPEC's larger "T-BR" (Top and Bottom Recirculating) 50 and 100 cubic foot cells require blower added air and are designed to recirculate finer pulp from the upper regions of the cell to the lower region to assist in the suspension of coarser particles. They are also designed to lift and keep suspended the coarser fraction which tends to settle in the cell.

QPEC utilizes all urethane impellers, impeller shaft sleeves, diffuser feed pipes and diffusers for exceptional wearing life. Other materials of construction are available as necessary for the process.

QPEC Flotation Cells have been furnished for a wide range of applications throughout the world. Many of these applications included unique features in either design or materials of construction to suit the needs of extremely abrasive or corrosive processes. Cells have been provided in mild steel, 316SS, 304SS, chlorobutyl lined, natural rubber lined, neoprene lined, polyurethane lined, with covers for sealed atmospheric control, Fiberglass Reinforced Polyester, etc.

Along with the flotation cells, QPEC has supplied the feed agitators, conditioners and attrition scrubbers necessary for the proper preparation of the material for the flotation process. These have ranged in size from 9" diameter up to 12'-0" diameter. They have also been provided in a range of materials of construction similar to that of the flotation cells.

QPEC Flotation Cells are in use throughout the world for applications such as the following partial listing of installations:

-- 28 cells of QPEC 18 SPL., Climax Molybdenum, USA molybdenum producer

-- 18 cells of QPEC 18 SPL., Henderson Molybdenum, USA molybdenum producer

-- 10 cells of QPEC 18 SPL., urethane lined, Sierra Rutile, Ltd., Sierra Leone, Africa

-- 14 cells of QPEC 18 SPL., chlorobutyl lined, Sierra Rutile, Ltd. Sierra Leone, Africa

-- 10 cells of QPEC T-BR #50, 316SS, Unimin Corp.

-- 10 cells of QPEC T-BR #50, urethane lined, Unimin Corp.

-- 10 cells of QPEC T-BR #100, FRP construction, P.T. Petrokujang, Indonesia

-- 18 cells of QPEC #5, #7 and #8, rubber lined, Togolais des Phosphates, Togo, Africa

-- 12 cells of QPEC #5, #7 and #8, chlorobutyl lined, Unimin Corp.

-- 20 cells of QPEC #7 and #8, Rosario Dominicana, Dominican Republic

-- 8 cells of #5 and #7 and 8 cells of #15, American Westmin

-- Numerous #5,7 and 8 cells for AMAX Research and Development

-- Numerous #5,7 and 8 cells for Hazen Research, Inc.

-- Numerous #7 and 8 cells for Owens Corning Fiberglass

-- 12 cells QPEC #8 cells, Cominco, Vancouver, BC

-- 8 cells QPEC #7 and 8 cells, BHP Minerals Research, Reno, NV

-- 12 cells QPEC #18 Spl., 316SS with double froth overflows, Celite Corp., California

-- 8 cells QPEC #18 Spl., Cell to Cell with Roughers, Scavengers and Cleaners in one bank

-- 8 cells QPEC #18 Spl. C&C Consulting

-- Numerous #5, #7 and #8 QPEC Pilot plant flotation machines in plants throughout the world

on all continents, for a wide range of minerals and applications

Many of the above plants included materials handling equipment, grinding mills, agitators, thickeners, filters, attrition scrubbers, etc. to complete the plants.

The dollar range of our orders for complete items of equipment over the past 5 years has ranged from $3500.00 for a single pump to over $750,000.00 for a complete plant including classifiers, scrubbers, flotation cells, agitators, thickeners, grinding mills, etc..

Our equipment has been used in a wide range of mineral recovery including precious metals, high grade quartz, rare earths, clays, environmental applications such as ink removal from recycled paper, molybdenum, phosphates, etc. etc.