It is our sad duty to inform you that Dr. Andrew W. Jenike passed away on Friday, August 8, 2003.

Dr. Jenike created the foundation for the science of bulk solids handling we all use today. Through his research, starting at the University of Utah, Dr. Jenike was able to identify basic solids flow properties, designed laboratory equipment to measure these flow properties (the Jenike Shear Tester), and recognized that the bin and feeder must work in unison to ensure reliable material flow.

In 1966, Dr. Jenike founded the renowned consulting firm of Jenike & Johanson, Inc. I began working with him in 1972 as a young laboratory technician. Back in the "old days", Andy, as we all called him, was very passionate about solids handling, and his inspiration took root in all of us who worked with him. He is the most unique person I have ever met and I consider him the Father of bulk solids flow theory.

But there is more to Andy than the business side. Personally, he was caring, thoughtful, and most of all, unselfish. I remember one time when he asked me to trim the small patch of grass outside our office (with a pair of scissors no less). As I began the task, soon he was right there beside me with his own pair of scissors, clipping away. An avid mountain climber, Andy was very fit. Once at a company outing, we all decided to climb (walk) Mount Monadnock in Jaffrey, NH. We, as a group, were about half way up when we met Andy, who was already on his way back down. I will always treasure these memories of Andy.

Today, Dr. Jenike's approach to bulk solids flow and test procedures are part of US ASTM standards. His theories are also widely used throughout Europe. His early publication, "Storage and Flow of Solids, Bulletin 123 of the Utah Engineering Experiment Station", is widely read and cited in numerous technical papers and patents. If it were not for this and his many other contributions most hoppers would be designed with no consideration of flow properties, hopper geometry or material of construction. His concept of "mass flow" allows all of us to build equipment and systems without flow problems.

I am grateful to Dr. Jenike for his work, dedication, leadership and friendship. He will be sorely missed, both personally and professionally. He is survived by his lovely wife, Una, and their two sons, Michael and Ian.

Naples, Florida -- CEMA's Safety Posters were designed by the CEMA Safety Committee as a service to the industry. They are designed to supplement to a user's in-plant safety program.  Five posters are available including ones for: screw conveyors, bucket elevators, package conveyors, baggage conveyors and bulk conveyors.

These free posters are in high resolution TIF and PNG file formats. You can modify the top right panel to include your company's safety program slogan or print them as they are. The type of printing and poster material and coating is left to the user to determine based on the anticipated placement of the posters.

The TIF Files are approximately 6 MB in size and the PNG files are under 1MB.  To download a poster, simply "right click" on the safety poster you want to download and save it to your computer.  Here is a link to the poster download page

http://www.cemanet.org/safety/posters.htm

The pictograms on these posters mirror, to the extent practical, the pictograms on the associated CEMA Safety Labels which should also be placed on your equipment. See the CEMA Safety Page for more details on the Safety Labels and Safety Label Placement Guidelines.

Founded in 1933, CEMA is the trade association of leading North American conveyor equipment manufacturers and engineering firms. CEMA also makes available to both member and nonmember companies, safety labels for all types of conveyor equipment as well as useful technical information and manuals. For further information on CEMA or its member companies, or to order safety labels or technical information, visit our web site at 

http://www.cemanet.org/

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Erie, PA -- Eriez has introduced new high precision, cross feeders designed for use in food packaging applications. These high speed, high deflection and high volume vibratory cross feeders and conveyors distribute product into vertical, fill and seal or weigh scale equipment using peripheral discharge trays capable of delivering from 100 to 1,000 cu ft of material per hour.

Eriez' HS (High-Speed) and HD (High Deflection) vibratory feeders featuring low energy, AC electromagnetic drives provide superior reliability, precise cycling and low operating cost. The high deflection series is recommended when feeding extremely lightweight materials where a higher angle-of-deflection and lower frequency produces more accurate feed characteristics. Both HS and HD series use the same AC drive enabling systems to easily cycle up to 100 times per minute.

Eriez' VMC Series Electromagnetic Conveyors use a two-mass vibrating system powered by one or more electromagnetic drives. Specially designed corrosion-resistant fiberglass springs amplify the stroke and are adjustable for easy fine-tuning of the conveyor's motion. They contain use no sliding or rotating parts to wear out, or belts and bearings to fail. A variable voltage controller allows "watch-like" precision in the control of conveyor amplitude. Units are available in base or suspension mounting.

Eriez' cross feeders use peripheral discharge trays made of food grade, stainless steel. Units can include screens to eliminate fines or damaged product during packaging.

For more information contact:
Eriez Magnetics
Telephone:  888-300-3743
Web site:  www.eriez.com

Email:  eriez@eriez.com

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Boulder, Colorado -- In many of the coal-burning utilities around the world there is the menacing issue of dust emissions from discharging to open stockpiles on power plant properties. The severity of the problem is often amplified if neighbors of the plants have dust settling on their porch.

Typically, these power plants have found there is only one choice as a solution; apply wet suppression in some fashion to the coal at the loading point of the stack out conveyor. Unfortunately, this option carries baggage with it. For example, chemicals applied can be costly year in and year out. Further, it is difficult to apply wet products to coal in cold temperatures. Lastly, there are always maintenance issues with pumps and spray nozzles, not to mention potentially reducing the Btu value of the coal.

This passive dust suppression control technology is based upon a fluid dynamics program that creates a stilling chamber in which the dust is contained in a controlled atmosphere with minimal motion which allows the precipitation of dust out on to the load of coal. In conveyor to conveyor transfer, this has resulted in reduced dust emissions in the workspace from 30 mg/m3 to ambient dust readings as low as 0.10 mg/m3 running 1400 tons/hour of Powder River Basin coal.

The Dustless Stacker utilizes this technology for conveyor discharges to coal stockpiles. We create a stilling zone where induced air velocity is minimized and the air and dust is contained and settles into the pile rather than blowing to the neighbors.

For more information contact:
Mr. Darren Wood
Air Control Science, Inc.
6560 Odell Place
Boulder, Colorado 80301
Telephone: 303-581-1070
Fax.: 303-530-3208
Email:  dwood@aircontrolscience.com

Web site:  http://www.aircontrolscience.com/

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People post their requests for help and offer their suggestions to others in our open forum.

Mr. van Niekerk needs advise on screw conveyors:

We are proposing to feed 12 mm lime pebbles from the bottom of a 12 meter long bunker into a bucket elevator with a screw conveyor.

Will the screw conveyor cause degradation of the lime over this distance of 12 m?  Is a screw the correct application in the bottom of a receiving hopper/bunker?  Please comment and provide some suggestions.
(Click here to post a reply)

Much appreciated,
Anton van Niekerk
Sappi Limited
antonvn@za.sappi.com

Mr. Coward wants to "tilt" shipping containers:

I am looking for a proprietary device which tilts 20 ft shipping containers on end from the back of a truck, holds them up while top-loading with a hatch in the door (maybe even give them a shake every now and again to settle) and tips them back down onto the truck when full.  Single body-truck only used.

Product is around 400 kg/cu.m (IE gross weight when full approx 18 tonnes).  Has anyone got, used, selling such devices - preferably in Australia.
(Click here to post a reply)

Dale Coward
dale.coward@bigpond.com

Click here to share your expertise with others in our Help Forum.

For Sale - Best Offer:  Nisshin Turbo Classifier

Model TC-60- II, for classification of fine atomized aluminum powder and other powders allowing fine cuts below 10 micron.

The Turbo Classifier comes with complete system - dust collector, cyclone, screw feeder, air/gas flow controllers. It has a capacity 1,000 kg per hour and was built in 1992. 

Do you have new, used or refurbished equipment for sale?
List your equipment and/or services in our E-Classifieds.  Its quick, simple and you can pay by credit card!.  You can even include a photograph with your ad!  

We now accept all major credit cards

Wanted: Product Manager/Sales Engineer - NJ

A 70 year old -reborn - company in Northern New Jersey manufacturing components for the heating, chemical, pharmaceutical, food and other related industries that use atomization technology an aggressive Product Manager / Sales Engineer to take our small Industrial Sector to the next level.

The successful candidate will put his/her Mechanical Engineering, Fluidics Engineering or other appropriate educational background to great use by focusing on growing a division that has unlimited sales opportunity.

You will be supported by a small team of manufacturing professionals. As the leader of the business, you will focus on growth which is obviously supported by all of the aspects of business that are essential to success.

You must have the talent to work directly with customers at all levels and transform the needs of those customers into actions that ensure success, including design and manufacturing. Hands on engineering expertise will be important to your success.

You must be able to achieve growth aggressively and focus on the future. You will not be micro-managed.  The goals of this division are aggressive but definitely achievable, based on your talents and energy level.

Requirements: Knowledge of nozzle design and manufacture or experience in fluid application will be a definite plus.

Growth will be well rewarded in the form of base salary plus commission / bonus. Good benefits.  Send your resume and salary history for immediate consideration. E-mail: stffgpr2003@yahoo.com or Fax: 732-866-8655

Mr. Marc LeVine
Integrity Consulting Associates
79 Barkalow Avenue
Freehold, New Jersey 07728
(732) 866-4077

The Job Fair is a free service of Powder and Bulk Dot Com.  You can post job opening for managers, engineers, sales, reps or other talented people you need. ...Or one can post their resume for companies who are looking to add talented people to their staff.

Do you have a position you need to fill?  Visit the Job Fair.

© 1999-2003 Powder and Bulk Dot Com
Home page:  http://www.powderandbulk.com/

Joseph Taylor, Editor
Powder and Bulk Dot Com Newsletter
3948 South Third Street, No. 121
Jacksonville Beach, FL 32250

Phone: 904-280-4656
Fax: 904-273-1399

Email:  jtaylor@powderandbulk.com

Powder and Bulk Dot Com's Newsletter is a 100% opt-in e-mail list of information for the materials handling professional.  Do you have company news, a new product, new service or other information you would like to share with our subscribers?  Please submit articles via e-mail, only to: news@powderandbulk.com

Dr. Jenike was a man of vision and he will be missed, please take a moment to read Joe Marinelli's tribute to him.

Also, we are celebrating our 200th issue of Powder and Bulk Dot Com Newsletter!  We have come a long way.  Click here to see what our 1st issue, July 1999, looked like!  It was sent out to about 30-40 people.  Our circulation +4,500 now!

Our goal is to provide information to improve your business by using the resources available on the Internet.

Thanks,
Joe Taylor, Editor
jtaylor@powderandbulk.com

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Principles of Powder Technology
by M. J. Rhodes (Editor)
Hardcover: 452 pages

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Silos: Fundamental of Theory, Behavior & Design
by C. J. Brown, J. Nielsen
Hardcover: 864 pages, February 1998

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Manual on Test Sieving Methods
(ASTM Manual Series, Manual 32)
by ASTM

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Find more books for the materials handling professional online, visit our Reading Room.

Frequently Asked Questions on Feeder Performance
Guest article by John Winski
Director of Sales, K-Tron Americas

Past Ask Joe! Archived Articles

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This weeks photo is of a Buhler supplied batching system, in Siberia, making preliminary blend of animal feed additives where vitamins, minerals and other additives are intermixed with a carrier material.  Buhler is a specialist in the design and construction of premix plants, where hygiene and accurate blending are demanded.

Photo courtesy of Bühler AG

Send us your photos:  We would love to have your photo of a bulk materials process, packaging, conveying or handling "action shot" for our home page.  Send your photograph and description to: news@powderandbulk.com