CHAPTER 3 SLUDGE THICKENING Thickening is a procedure used to increase the solids content of sludge by removing a portion of the liquid fraction. To illustrate, if waste activated sludge, which is typically pumped from secondary tanks with a content of 0.8% solids, can be thickened to a content
A rake drive suitable for underflow mud with a yield stress of 50150 Pa Producing underflow mud capable of being pumped with the McLanahan M3H centrifugal Slurry Pump Similar to both the HighRate and Paste Thickeners, the HighDensity Thickener depends on the feedwell to create the optimal free settling characteristics.
and its predecessors have been working with grinding mill circuits in a wide variety of mining applications throughout the world during the years. The new MD series of mill discharge slurry pumps encompass all of this experience coupled with an understanding of todays market needs and demands for improved sustained performance.
A wide variety of thickener underflow pump options are available to you, such as low pressure, high pressure. You can also choose from free samples. There are 17 thickener underflow pump suppliers, mainly located in Asia. The top supplying country or region is China, which supply 100% of thickener underflow pump respectively.
The light transmitted to the photocell is a function of the concentration and charac teristics of the solids slurry in the sensing gap. In service each sensor is suspended in the thickener with a cable which also provides power to the light emitting diodes and photocell and transmits the photocell output to the control unit. The underflow
Dewatering Thickening, Filtering, We have an application that requires a 1.5quot; x 1quot; slurry pump. However, the spare pumps that we have available are a Warman 3/2 and a Flowserve 2.5/2. The fact is that thickener underflow was supposed to go through vacuum disk filter, however, due to highly content of clay minerals, montmorillonite etc
o considerations for thickener underflow, centrifugal pump and gravity flow systems. 2 CENTRIFUGAL PUMP PERFORMANCE Centrifugal slurry pumps are able to pump surprisingly viscous thickened tailings mixtures (such as illustrated in Figure 1). The performance of a centrifugal pump is reduced when pumping slurry compared with pumping water.
WatsonMarlow Fluid Technology Group is the world's largest manufacturer of peristaltic pumps, tube pumps, hose pumps, sinusoidal, sine pumps the fastest growing positive displacement pump type because they are the simplest, cleanest, lowest maintenance way to pump up to 400 GPM
A thickener has several basic components a tank to contain the slurry, feed piping and a feed well to allow the feed stream to enter the tank, a rotating rake mechanism to assist in moving the concentrated solids to the withdrawal points, an underflow solids withdrawal system, and an overflow launder.
Jan 26, 20150183;32;c) Under flow pump which can be of several types including peristaltic, centrifugal, diaphragm and progressive cavity. Thickeners are designed to operate continuously with slurry/water consistently flowing into the centerwell with thickener underflow pumping balanced to maintain a mud bed in the thickener.
For bridge and column type thickeners with tanks that are mounted on ground level the access to the slurry pumps is trough a tunnel. For very large column type thickeners the column is constructed as a caisson that is submerged in the slurry so that the pumps are housed at the bottom of the chamber and deliver the underflow upwards.
Currently the most common pump to be used to remove the thickener underflow, a centrifugal pump is not necessarily the best option. From a spares perspective they are the most cost effective pump however using a centrifugal pump carries a number of issues. Firstly, the slurry has to be watered down to go through the pump, which is somewhat
When South African phosphate producer Foskor needed to pump viscous nonNewtonian thickener underflow slurry, the Xinhai Minerals team was up to the challenge. Since the 1980s Foskor had used Envirotech174; Bframe slurry pumps, but now required a specialised solution better suited to extremely viscous materials.
Thinking outside the square to maximise mining productivity . Global Pumps use Verderflex VF series peristaltic hose pumps to replace centrifugal slurry pumps, which reduces the maintenance significantly in Thickener Underflow Pump applications.. Pictured left is a Verderflex VF125 pump installed at the Sandfire Resources DeGrussa CopperGold Mine in Western Australia.
The objectives of thickener control are varied, but in most instances, the objective is to dewater the slurry, reclaim the clear overflow for reuse in the process, and produce a thickened or more dense underflow, which can either be rejected, in the case of tailings,
Pumping Thickener Underflow Slurries Concentrate Slurry containing a abrasive materials from three areas including very abrasive high grade nickel concentrate, mixture of copper and nickel and copper slurry with low nickel, flows up to 359 l/min (95 US GPM), up to 72% solids density of 4.29 4.97.
A wide variety of thickener underflow pump options are available to you, such as low pressure, high pressure. You can also choose from free samples. There are 17 thickener underflow pump suppliers, mainly located in Asia. The top supplying country or region is China, which supply 100% of thickener underflow pump respectively.
ALX High Volume Hose Pump. After years of development the ALX150 was introduced for applications ranging from; sea tanker overloading, to high solids thickener underflow slurry transfer, where fast reliable offloading is key to process profitability. Our pump uses soft action rotating rollers to compress the hose instead of hard fixed shoes.
According to Xinhai, they demonstrated they could continuously pump the highdensity viscous underflow slurry at relative densities above 1.9. As a result, the customer purchased the pump and began upgrading all the remaining concentrate thickener underflow pumps to the Warman AHF pump technology, Xinhai said.
Using Peristaltic Hose Pumps for more efficient Thinkener Underflow Pumping . As replacement for Soft Rubber Lined (SRL) Centrifugal slurry pumps, Verderflex VF80 pumps were installed on a mine site where concentrate slurry with abrasive content materials is drawn from 3 areas high grade very abrasive nickel concentrate, copper and nickel mixture, and copper slurry low in nickel that flows
For bridge and column type thickeners with tanks that are mounted on ground level the access to the slurry pumps is trough a tunnel. For very large column type thickeners the column is constructed as a caisson that is submerged in the slurry so that the pumps are housed at the bottom of the chamber and deliver the underflow upwards.
Apr 20, 20160183;32;Thickener underflow slurry Three applications ranging from the very abrasive to mildly abrasive slurries from concentrator. Concentrate Slurry, Abrasive materials from three areas including very abrasive high grade nickel concentrate, mixture of copper and nickel and copper slurry with low nickel, flows up to 22 m3/h, up to 72% solids solids
Thinking outside the square to maximise mining productivity . Global Pumps use Verderflex VF series peristaltic hose pumps to replace centrifugal slurry pumps, which reduces the maintenance significantly in Thickener Underflow Pump applications.. Pictured left is a Verderflex VF125 pump installed at the Sandfire Resources DeGrussa CopperGold Mine in Western Australia.
A Goulds XHD heavy duty centrifugal slurry pump was recently testproven for a customer in a harsh application. Plant silver mining and processing facility, slurry pumps used for mill discharge service. The pump liners and impeller were wearing out in eight to ten weeks, requiring frequent parts replacement and reducing production.