Coal Applications

Customer demonstration of a pump in a coal slurry pond. The sphere of influence emitted by the agitator can be seen on the surface of the pond.	From the picture you can cleary see the extremly high solids content in the slurry being pumped.

View Submersible Slurry Pump Demonstration Videos

Coal Washing

The initial design of the Goodwin submersible slurry pump came from working closely with British Coal, when the coal washing industry was still thriving in the UK.

They set a design brief to Goodwin with the task of eliminating the problems that they had with their existing submersible pumps to allow them to utilise Goodwin pumps in both the dense medium and baum jig processes, the five main problems that they experienced were eliminated by us addressing the following points:

• Develop a motor enclosure which would eradicate the potential for the electric motor overheating & burning out.

• Develop an electric motor with reserves of power for direct on line starting to overcome the issue of settled solids in sumps

• Develop a design of an integral agitator to break down and re-suspend settled solids

• Develop and position a mechanical seal which was not subjected to pumped media pressure

• Develop a cable gland entry system which prevented the cable being pulled out of the gland and had a terminal enclosure quite separate from the motor enclosure

By addressing these points Goodwin overcame the traditional problems that used to be experienced with normal submersible slurry pumps to become the market leading pump for heavy duty applications where other pumps fail.

Applications of where our pumps are used are can be seen in the Power Station page as the majority of clean up type applications are the same.

After British Coal saw the advantages of the Goodwin submersible slurry pumps, they found many other uses for them replacing equipment such as drag lines, earth moving machinery, conveyor belt systems, dense media mixing tanks which before using the Goodwin submersible slurry pump they never would have considered using a submersible pump because of the industry wide poor reliability problems.

There are a host of additional features that contribute to the reliability of this Submersible Slurry Pump in the most demanding environments, some of which are shown on other application examples, to see all of them please contact us so that we can send a full brochure and arrange to come and visit you.

Steel Applications

The very small particle size of electro precipitated solids from processes are not normally movable by pumps. Since the Goodwin slurry pump was installed at this site the sump has never been manually dug out. Prior to this installation it had to be manually dug out four or five times a year.	Goodwin slurry pump being immersed into sump for mill scale collection. The steam around the pump shows high ambient temperatures. Using its agitator it pumps mill scale and granulated slag with ease.

View Submersible Slurry Pump Demonstration Videos

Continuous Casting and Hot Rolling Mills

Goodwin submersible slurry pumps, are proven worldwide to succeed in the most demanding environments, like pumping Mill Scale at high temperatures.

What makes our submersible slurry pump particularly suited to working in the Steel industry are the following features:

• It has our own proprietary design of 30 kw oil filled motor, which has proven itself in the industry for over 25 years. The motor is built to withstand pumping continuously based on all steel copper and brass construction (no aluminium), with a slurry temperature of 90°C carrying up to 65% solids by weight, handling particles up to 32mm diameter.
  
  
• Where other submersible pumps will burn out if they are accidentally left and run dry, the Goodwin submersible slurry pump can run indefinitely pumping no media without burning out or tripping.
  
  
• The patented Inducer on the Goodwin submersible slurry pump creates a hydraulic shock wave that puts very dense particles in to suspension to be pumped with ease.
  
  
• The “wet-end” of the pump is made of highly abrasion resistant materials suited to working in the most demanding environments with the minimum of wear.
  
  
• The twin volute design exerts a balanced force on the pump shaft, maximising the bearing and mechanical seal life. By minimising any vibration whether pumping no media / water / or a heavy slurry.
  
  
• The mechanical seal is not subjected to pumped media pressure (just the depth of pump submergence) reducing the possibility of any failure. Sump depths from 0.5m to 28m.
  
  
• The ‘open vane impellor’ and ‘wear plate’ combination give unsurpassed performance for dealing with heavy slurries giving up to 38m Head and a maximum pumping distance of 700m
  
  
• It easily achieves required running interval to be able to plan maintenance for scheduled shutdowns
  
  
• As the ‘wet end’ is immersed in the product the Goodwin submersible slurry pump does not need priming.

The Basic Oxygen Plant (B.O.S)

Goodwin submersible slurry pumps are regularly installed in the Basic Oxygen Plants (B.O.S) running in sumps below the precipitators, pumping high temperature limestone sludge back into the system for re-processing

Slag Granulation

Goodwin submersible slurry pumps pump high temperature granulated slag when water is used as the granulating medium. Our pumps can handle particle sizes up to 32mm (ANZE) and 25mm (NZE), handling all particles from micron sizes up to their maximum particle size. Our pumps are primarily utilised after the slag has been granulised, pumping slag granules from the quenching pond to the de watering systems. Goodwin submersible slurry pump are capable of pumping slag at a continuous rate of up to 2 tonnes / minute.

Summary

The Goodwin Submersible Slurry submersible slurry pump eliminates the problems associated with standard horizontal and vertical centrifugal pumps due to its compact size requiring no foundations, can replace more expensive capital equipment such as conveyors, drag lines and diggers, saving you money on running and maintenance costs.

There are a host of additional features that contribute to the reliability of this Submersible Slurry Pump in the most demanding environments, some of which are shown on other application examples, to see all of them please contact us so that we can send a full brochure and arrange to come and visit you.

Power Applications

Ash invariably gets into process cooling water reducing the capacity of cooling water holding taks. With the Goodwin submersible slurry pump this problem is overcome as ash is pumped back to main ash disposal areas up to 700m away.	Ash being pumped from process water tanks to ash disposal pond.

View Submersible Slurry Pump Demonstration Videos

A typical 1000 mega watt Power Station uses up to 12 Goodwin 100 ANZE units on the coal stockpile and reclaim conveyor systems.

Conveyor Drive and Transfer Points

In the Power Stations, the pumps are used in areas of general clean‑up and solids removal. The agitator on these submersibles has enabled the Power Stations to generate electricity continuously, keeping down the solids that accumulate due to spillage at the conveyor transfer points and around the drive drums of those conveyors.

The efficient and prompt removal of these solids eliminates the chances of fire due to solids build‑up around the drive and tension drums.

Paddle Hopper Feeds and Stock Pile Drains

By using wash down hoses in the vicinity of the paddle hopper feeder and stock pile drains, all the -30mm coal spillage can be pumped to the surface where it can be handled by the coal plant mobile machinery.

There have been dramatic improvements in the working conditions for the plant operators and availability of conveyors since the submersibles have been installed. By providing a reliable pump, the plant will be kept clean with the minimum of effort. It is fact that one gets more work from manual labour  by asking them to wash‑down than if they were given shovels and wheel barrows to remove spillage and debris.

Boiler and Ash Plants

On boiler plants Goodwin Submersibles have replaced vertical spindle pumps, high pressure water ejectors and pneumatic eductor systems in "Ash Crusher Sumps". From the sumps located at each end of the boilers. The submersibles are installed by the side of the crushers where there is always ash and water from the quench circuit present. The agitator on the submersible is very effective here to ensure that all solids are removed. This enables quick access to the ash crushers when maintenance is required. Previously, much production time was lost when the crushers blocked or failed when the sumps had to be dug out to remove ash residue before maintenance could be effected.

Precipitator Drains and Dust Sumps

The pump is equally effective when handling very fine dusts, for example, in the precipitator drains tank. Very high concentrations of dust particles are discharged from the precipitators; up to 60% solids is not uncommon. Turbine hall drainage is also diverted to these tanks to help with dilution. The product in these tanks is pumped just a short distance to the main ash pits.

Light duty clean water submersible pumps in these tanks do not perform well. The complaint from the fuel and ash engineer was that when this product is de-watered it sets as hard as concrete. Pneumatic picks were used 2 or 3 times a year when the solids had to be removed. Typically, sumps where Goodwin Submersible Pumps have been installed over 4 years ago have never required any solids to be removed manually. The influence of the agitator ensures maximum solids removal.

Summary

With all of the applications that are described, the reason this is such a successful pump is because it will improve your plant running time, reducing your maintenance costs and making you more money.

This sites emergency ash lagoon was full. After 10 days pumping with two Goodwin 100 ANZE pumps the difference is clearly visible. The lagoon is now ran and maintained at its original depth which it has never been at since the powerstation was comissioned.

Minerals Processing/Copper & Aluminum

The very small particle size of electro precipitated solids from processes are not normally movable by pumps. Since the Goodwin slurry pump was installed at this site the sump has never been manually dug out. Prior to this installation it had to be manually dug out four or five times a year.	Goodwin slurry pump being immersed into sump for mill scale collection. The steam around the pump shows high ambient temperatures. Using its agitator it pumps mill scale and granulated slag with ease.

View Submersible Slurry Pump Demonstration Videos

Leaching

Due to the nature of many processes that are used in processing minerals and ore refining there are some extremely demanding applications found, which are ideal for the Goodwin Submersible Slurry Pump. Although our standard pump is made with a highly abrasion resistant “wet-end” and a ductile iron body for the pump, this is sometimes not suitable due to process conditions that are sometimes used in leaching.

By these “process conditions” we are referring to extremely Acidic or Alkali process media which would be totally unsuitable for the standard materials of construction. Our standard operating pH range is 4 – 10. If the  pH of the slurry to be pumped is outside the standard operating range we can offer a pump constructed of suitable materials that will be resistant to the chemical attack of the pump encompassing all parts in contact with the slurry. 

Slag Granulation

Goodwin submersible slurry pumps pump high temperature granulated slag when water is used as the granulating medium. Our pumps can handle particle sizes up to 32mm (ANZE) and 25mm (NZE), handling all particles from micron sizes up to their maximum particle size. Our pumps are primarily utilised after the slag has been granulised, pumping slag granules from the quenching pond to the de watering systems. Goodwin submersible slurry pump are capable of pumping slag at a continuous rate of up to 2 tonnes / minute.

High Temperature Digesters

Goodwin submersible slurry pumps are utilised for pumping the processed ore slurry normally at high temperatures up to 90°C and concentrations up to 2.8 Kg / litre from digester tanks.

Precipitator Drains and Dust Sumps

The pump is equally effective when handling very fine dusts, for example, in the precipitator drains tank. Very high concentrations of dust particles are discharged from the precipitators; up to 60% solids is not uncommon.

Light duty clean water submersible pumps in these tanks do not perform well. The complaint from engineers is that when this product is de‑watered it sets as hard as concrete. Pneumatic picks were used 2 or 3 times a year when the solids had to be removed. Typically, sumps where Goodwin Submersible Pumps have been installed over 4 years ago have never required any solids to be removed manually. The influence of our agitator ensures maximum solids removal.

Froth Flotation Plants

For maximum effectiveness of the froth cells, there is an absolute need for good homogenous water / solids slurry mix to the cells. The submersible is used because the agitator prevents solids settling in the tank and provides consistent product to the froth cells. With the use of bypass line and pinch valves, the flow rates can be adjusted to the requirements of the froth cells. It has been proven that the froth cells operate more efficiently with the submersible supplying the product rather than small horizontal stationary pump units.

Cyclone Plant Centrifuge Effluent

Centrifuge Effluent is a relatively clean product to pump, but with the Goodwin Submersible installed, it is possible to combine floor clean-up sumps with the centrifuge effluent sump, negating the need for additional pumping equipment and buffer tanks or sumps. The 25-30 m3/hr of centrifuge effluent can be diverted as extra dilution into the wash down sump with good effect.

Pumps with good particle handling capabilities are needed in this application, as centrifuge baskets do fail and product up to 12 mm in size is deposited in the sump with high solids concentration.

Tailings Filter Presses

Fast filling the filter press chambers is an ideal application for the submersible pump, it has already shown higher productivity of the presses and a saving in operating costs. The feed product to the presses is the flocculated tailings from the thickener. Without further dilution, this product is pumped from the thickener buffer tank directly to the filter press. A pressure of 3.8 bar can be generated in the filter press with the submersible. When the press chambers are full, a positive displacement pump takes over to generate the higher pressure of 8 bar at which the filter cake can be discharged at 30% moisture.

The press cycle time is reduced as the press is fast filled with a higher concentration product. The positive displacement pump will run only for a fraction the time it would when fast filling with conventional pumps, so extending its operational life.

Submersible pumps supply more concentrated product to the filters and the Goodwin submersible is many times more reliable than horizontal pumps in this application as it operates with more stability over a larger portion of the characteristic curve.

Filter Press Filtrate

When filter cloths become damaged a very heavy slurry is dropped into the sump. There is a requirement for a slurry pump to be installed at this location, and this sump can be combined with floor clean-up sumps to reduce the number and type of pumps on the plant ‑ as with centrifuge effluent.

Concentrators

With ore cleaning and concentration processes they are invariably wet processes that produce large amounts of waste material that is separated from the ore. Goodwin submersible slurry pumps handle both the concentrate and waste generated, minimising water consumed and maximising efficiency by pumping slurries with up to 65% by weight concentration (2.8 kg / Litre). bBecause of the heavy duty nature of the Goodwin submersible slurry pump it can handle clay / silica / grit / any abrasive material that is present because of its highly abrasion resistant ‘wet end’  - handling particles up to 32mm style ANZE and 25mm style NZE.

There are a host of additional features that contribute to the reliability of this Submersible Slurry Pump in the most demanding environments, some of which are shown on other application examples, to see all of them please contact us so that we can send a full brochure and arrange to come and visit you.

Other Applications

By reading the other applications listed this you may think this means our pump is not suitable for your industry....you would be wrong! The applications are focused like this on our website as sell 100’s pumps into them not because we do not do other applications that are more unique. Because of the heavy duty construction this pump it can handle almost any thick slurry that is thrown at it.

View Submersible Slurry Pump Demonstration Videos

Goodwin submersible slurry pump happily works at 10. Our closest competitor on the same scale would be able to handle a difficulty rating about 6-7. So the problem we initially have till people have experienced the Goodwin Submersible Slurry Pump is that they do not believe what our pump can do. After they have experienced it, they change their mind-set of what it is possible to do with a Goodwin submersible slurry pump, some of the applications are listed below; but the possibilities are endless:

• Replacing conveyor belt systems
• Replacing drag lines
• Replacing diggers
• Dense media mixing
• Specialised brick making
• Pumping paint pigment
• Fertilizer plants
• Pulp mills
• Catalyst mixing
• Any wet process containing abrasive grit
• Etc…..

If you are not sure if your application would work with our pump please contact us so we can talk about your process details,  and if our pump will work we will send a full brochure and arrange to come and look at you process to see how we can assist you.