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Slurry Pumps  
 

HEC's Sugar Slurry  Newsletter

Newsletter of Hunter Equipment Company   Volume 4 - Jan 2007
 
GIW Slurry Pumps-Tough Sugar Duties


GIW Industries is a centrifugal slurry pump manufacturer based in Grovetown, GA. Since the inception of the company in 1891, their product focus has been the transport of solids using centrifugal pumps. From tar sands in southern Canada to the copper tailings in Chile, this company has revolutionized the handling of abrasive, settling solids in markets all around the world. The sugar manufacturing process includes several areas of slurry pumping that are perfectly suited to the GIW LCC line of horizontal and vertical pumps. There are several applications that fall into this category.


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1. Dirty Juice/Limed Juice- GIW pumps handle the toughest raw juice applications.

2. Boiler Ash---GIW pumps handle fly ash, ash sluice, and ash pond reclaim applications.

3. Mud/Ash slurry-in this part of the process, GIW pumps handle belt thickener solids mixed with ash for transfer off site to the spoils area.

4. Wash water transfer-GIW pumps handle the dirty, grit laden wash water throughout the circuit.

5. Sump pumps---GIW vertical pumps are used in sumps that see mud, ash, sand, and grit.

6. Final mill discharge offsite---GIW pumps take all of the accumulated waste water and send it offsite to your final discharge pond.

The application focus of GIW slurry pumps is simple and straight forward. Pumps that are required to handle solids must be designed to accept large particles, abrasive materials, impact and sliding abrasion, and the elevated velocities required to maintain the solids in suspension throughout the pipeline. The wet end components of GIW LCC pumps are cast in a proprietary 28% chrome white iron alloy that is perfectly suited for the services in the sugar process applications listed above. Handling a pH range of 4-14 and maintaining a minimum hardness of 650 Brinell throughout the thickness of the wet end components insure long wear life and lower pumping costs to the mill. We are confident in the selection of GIW's LCC pump for your toughest applications. In fact, here is a performance guarantee to prove our claim: We will guarantee in writing a minimum of 5 years wear life on the wet end (shell, impeller, and suction liner) of any GIW LCC pump sold into the sugar market...100% money back if any of our parts wear out... No questions asked!!!


GIVE US A CALL. WE ARE WILLING TO PUT OUR PUMPS TO THE TEST






HEC Sells the Most Expensive Knife Gate Valve on the Market

It's true. HEC is the distributor for Clarkson knife gate valves which are usually at least 20% more expensive than the closest competitor.

Clarkson knife gate valves were originally designed by Bob Clarkson, a mining superintendent at a silver mine in Nevada during the 1950's. Clarkson was charged with keeping an extremely tough process running 24 hours a day/ 7 days a week extracting silver from crushed rock. The heart of this process involved handling a slurry or mixture of crushed rock and liquid that literally ate away the valves and equipment that it came into contact with in a very short time. Clarkson quickly found out that the valves available on the market were not up to this extremely abrasive service. So he designed a valve that would allow him to keep his process running...and allow him to get a good night's sleep without getting called back to the mine when the process went down due to equipment failure.

The heart of the Clarkson knife gate valve is two massive, steel reinforced elastomer sleeves which isolate the rest of the valve from contact with the slurry. The sleeves are compressed by the pipeline which forms a type of pressure vessel or section of "elastomer pipe" within the valve and hold up to the most abrasive slurries. The gate is completely out of the flow path in the open position and thus is not subject to wear. When the gate is closed, the gate travels completely through the space between the sleeves, thereby creating a

100% bubble tight shutoff of the pipe...period.


Clarkson


With the valve in the closed position, there is absolutely no way for material to move downstream of the gate. That means that there is no dewatering of the slurry due to leakage, no need to shut down a process to work on downstream equipment, or drain a tank to do pump maintenance. In fact, the valve is approved for use at the end of a pipe as a line blind due to the fact that nothing can flow downstream.

The elastomer sleeves are the only wear parts on this valve. The sleeves can be replaced in the field with a screwdriver, and the replacement of the 2 sleeves is a complete valve rebuild since it is the only part that comes into contact with the slurry.

HEC guarantees that the sleeves will last the entire crop or we will replace them free of charge!

Why is this the most expensive knife gate valve on the market? Clarkson valves are used when nothing else will work. The cost of a complete rebuild is only a fraction of the cost of a new valve, thus making Clarkson the best long term solution to your toughest isolation applications. And it is the last valve you will buy for a particular troublesome application.

If you are tired of replacing lesser valves that continually wear out, find out why Clarkson knife gate valves are actually the most cost effective solution to your toughest isolation valve services...Because as you know, it is not the initial cost...it's the total cost of operation that most affects your bottom line.


Mixing From An Operators View
Cargo Ship


As an operator in today's industrial plants, you are called to be a true jack-of-all-trades. The effective operator must have multiple skills, advanced knowledge of equipment, an understanding of several mechanical principles, and a bit of chemistry thrown in for good measure. It's no wonder that a experienced operator in today's plant is one of the most important people in the company.

Let's look at a common application, Mixing . . . From your point of view.

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It is common to have batch mixing operations in which dry solids are added to a tank containing liquids to produce a homogenous blend or slurry to be used in a process. An example of this would be adding sacks of dry polymer to a tank of water.

Unlike some materials that quickly go into suspension, some polymers must be agitated in order to sufficiently "wet out" the powder into a soluble solution. From an operator's vantage point, this usually means that he or she is looking down at the top of the tanks liquid surface. Since most slurries are not clear, the surface of the liquid is all that the operator can see.

It is a common misconception that an actively rolling surface = a well mixed tank. On the contrary, the presence of excessive surface action is an indication that the mixer is in the wrong position for effective mixing. Also the presence of a vortex or tornado like activity on the surface of the tank means that air is being sucked into the impeller and is keeping the liquid and solid from being effectively mixed. We have a unique video available to all of our customers in which the operators can learn the correct positioning of a mixer in a tank in order to make their job much easier.


Give us a call or email us @info@hunterequipmentco.com and we will send it directly to you.


Mixing is much more than placing a mixer in a tank and turning it on. Let us show you the difference in a quick and easy transfer of information. You are the heart of the process. We can help you do a more effective job or improve an existing process. We look forward to hearing from you.





HEC Customer Service



Call today for a customized quote on the equipment you need.


225-929-6546


Our customer service department opens at 7:00am and is staffed until 5:00pm each day. Allow us the opportunity to provide to you the equipment your process needs to operate efficiently.

To inquire via email, you can reach Shannon at

shannon@hunterequipmentco.com

shannon





NEW PRODUCT SPOTLIGHT

HEC now represents Chicago Industrial Pump Company's Pitbull Pump. This unique pump is ideal for tough dirty jobs and is capable of pumping solids as big as 5-1/2". No diaphragms, no impellers, no seals, no packing and no motors. Put it in place and you will forget about it.

shannon


Pitbull Demonstration Video
Video

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2006 Hunter Equipment Co., Inc.