Pumps and Pumping

OSA Sample Pumps – Vertical Tank Pump

on stream analyzer pumpFor pumping and feeding a slurry sample to a On-Stream-Analyzer (OSA), the classic pump to use is a vertical tank pump. The market for such OSA sample pump appears dominated by Metso. Irony is OSA’s are made by Outotec or Thermo Fisher Scientific, but you must go elsewhere to pump your slurry sample to the X-ray. What size should the OSA sample flow be?

Metso Sala Vertical Tank Slurry Pump, Model VF50 O5, complete with high chrome wear parts (casing, impeller, inlet), mild steel tank, steel shaft with no Shaft seal (no gland water required), 5 HP, 380 V, 60 Hz, 3-phase premium efficiency

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By | 2017-03-17T19:08:14+00:00 December 21st, 2016|Categories: Equipment, Pumps and Pumping|Comments Off on OSA Sample Pumps – Vertical Tank Pump

Power Required for Pumping Water

In Pumping Water, the power required to raise a given quantity of water to any height up to 100 ft. can be calculated from this Table, which assumes the use of a double inlet centrifugal pump of good design working well up to its full capacity and reasonably near to its most efficient speed. To calculate the total power consumption the appropriate horse-power figure in the table must be multiplied by the number of gallons per minute to be pumped and the total effective head in feet.power-required-for-pumping-water

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By | 2017-03-17T19:18:21+00:00 October 21st, 2016|Categories: Pumps and Pumping|Comments Off on Power Required for Pumping Water

Slurry Pumps

When the slurry cannot be transferred from one machine to the next by gravity, one method of handling it is by means of a Wilfley slurry Pump, which is shown in Fig. 21. It is employed in most modern flotation plants for elevating and transferring all classes of material from coarse gritty slurry to fine slime. Differing considerably in design and construction from the usual type of centrifugal pump, it has the advantage that the conventional stuffing-box is replaced by a centrifugal seal which dispenses with the necessity for gland water and eliminates all wear on the shaft. This seal is so

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By | 2017-03-17T19:18:41+00:00 October 12th, 2016|Categories: Pumps and Pumping|Comments Off on Slurry Pumps

Froth Factor for Pump Sizing

The ‘froth factor’ is a measure of the air contained in the froth. It is quantified by filling a measuring cylinder or bucket, of known volume, with froth and measuring the froth column. After air dissipation the remaining water and solids volume is measured. The ratio of the original volume of froth to the remaining combined volume of water and solids is the ‘froth factor’. Measured ‘froth factor’ values are not employed by the flotation cell or pump designers. These are modified based on experience and application.

Froth transfer between flotation stages requires either gravity

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By | 2017-03-17T19:21:30+00:00 August 2nd, 2016|Categories: Flotation, Pumps and Pumping|Comments Off on Froth Factor for Pump Sizing

Tailings Pond Water Balance

Water systems in modern mines are complex and an understanding of the tailings pond and plant water balance is necessary. Control of the water balance can avoid problems such as operating losses from water shortages or hazardous releases as a result of a water surplus. Here is a schematic of a typical water balance. By regularly monitoring the various components of the water balance, effective water management can be practiced.

For operators who depend on reclaim for process water, the water balance must be closely monitored. There are many factors that affect

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By | 2017-03-17T19:21:48+00:00 July 16th, 2016|Categories: Pumps and Pumping, Various|Comments Off on Tailings Pond Water Balance

Pumps & Pumping Research

By | 2017-03-17T19:22:39+00:00 June 29th, 2016|Categories: Pumps and Pumping|Comments Off on Pumps & Pumping Research

Pumps & Pumping Education

By | 2017-03-18T13:43:50+00:00 June 29th, 2016|Categories: Pumps and Pumping|Comments Off on Pumps & Pumping Education

Centrifugal Pump

Centrifugal Sand Pump

The Nor-Sand Centrifugal Sand Pump is an evolution in pump design which overcomes the many difficulties encountered in handling abrasive materials. An unimpeded flow of pulp to the impeller is assured, as provision has been made to prevent coarse material from settling out by providing the pump with a central inlet on the shaft side of the casing. An extension on the gland projects into the zone of centrifuge within the impeller, thus eliminating back pressure on the packing gland. A very small amount of gland water is required to keep the gland free from grit (as low as ½ of 1% of the total

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By | 2017-03-18T14:25:33+00:00 May 31st, 2016|Categories: Equipment, Pumps and Pumping|Tags: , , |Comments Off on Centrifugal Pump

Laboratory Pumps

Suction-Pressure Laboratory Diaphragm Pump

The Suction-Pressure Laboratory Diaphragm Pump is widely used for the pumping and control of the discharge of thickened concentrates, pulps, and hydroclassifier sands in continuous laboratory test plants. This pump is also applicable to commercial installations where the volume of material to be handled is small. These Suction-Pressure Laboratory Diaphragm Pumps are available in ¾” simplex or 1¼” simplex or duplex units. Belt or motor drive can be furnished.

Suction PressureSize

Laboratory Vertical Sand Pump

The Laboratory Vertical Sand Pump is particularly valuable in the continuous test plant. The feed falls directly

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By | 2017-03-19T01:19:36+00:00 May 30th, 2016|Categories: Equipment, Pumps and Pumping|Comments Off on Laboratory Pumps

SRL Pump Types and Parts

SRL SAND PUMPS —GLAND TYPE

SRL Pumps with positive Water Seal have a world-wide reputation for their high efficiency, low part cost, long life in handling abrasive slurries, sands and acids.  Wear causes loss of pump efficiency and loss of pressure. Accuracy of parts, precision molded of rubber, and the superior wearing qualities of the tough “dense” rubber used in SRL Sand Pumps keeps efficiency high over an extended period of service. High pumping efficiency also results in lower

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By | 2017-03-17T19:26:46+00:00 May 12th, 2016|Categories: Equipment, Pumps and Pumping|Tags: , , |Comments Off on SRL Pump Types and Parts