Archives :: Processing & Handling :: Solids Handling

Displaying 281 - 300 of 333 stories.
December 4, 2009
  Piab Vacuum Conveyors The UC Series of vacuum conveyors (photo) comply with Good Manufacturing Practice (GMP) standards, and are suitable for pharmaceutical processing applications, including loading and unloading coating pans, manufacturing tablet cores and handling or...
December 4, 2009
The Megatex XD Screener provides high-capacity throughput for large-volume applications in agriculture, plastics and chemicals. The screener has a unique elliptical-linear motion designed for high screening performance with low...
December 1, 2009
As bulk-solids processors look for ways to save money, manufacturers of screening equipment are concentrating on maximizing the efficiency of the equipment they offer. Screening has been prominent in solid-solid separations in the chemical process industries (CPI) for decades. It is usually performed either to remove oversize particles and foreign materials from a bulk solid (scalping), to separate...
September 1, 2009
Plastics are most commonly produced and sold in pellet form due to the superior handling characteristics of pellets in downstream applications. From the moment the polymer is pelletized from its molten state, the pellets or granules undergo a series of handling steps as they move from the producer to the consumer. For instance, post-pelletization steps include: • Hydraulic conveying • Drying...
August 1, 2009
Many branches of the chemical process industries (CPI) make use of impact comminution to process solid matter, such as minerals, foodstuffs, pharmaceutical products, and above all, products for the chemicals industry. Impact comminution is also used for coarse crushing, but the focus of this article is fine grinding with end-product particle sizes below 500 µm. The technology of impact comminution...
July 1, 2009
Distribute and weigh solid library compounds automatically Compound libraries are critical to pharmaceutical companies. Liquid handling for the dissolution of library compounds has been automated for many years, but the distribution and weighing of the original solid dry-stored library compound is still done manually. The Calli-L (photo) is specifically designed for the distribution of dry, powder library...
June 1, 2009
Figure 1.  Vibratory feeders are particularly well-suited for fragile or friable materials, and hard-to-convey powders Figure 2. Today’s advanced electromagnetic drives address many shortcomings of earlier designs The need to move, convey and feed materials exists in virtually all segments of the chemical process industries (CPI). Vibratory feeding and conveying equipment (Figure 1) has been...
May 1, 2009
Evaporation of moisture or volatile organic compounds (VOCs) from bulk solids usually takes place in two stages: one in which the drying rate is constant, and the second in which the rate decreases over time. Devolatilization during the first stage is rapid and can be readily accomplished in flash, spray, or fluidized bed dryers. In the second stage, however, the VOC or moisture removal rate is diffusion...
April 1, 2009
Pneumatic conveying of bulk solids has been successfully practiced — in industries as diverse as chemical, agricultural, pharmaceutical, plastics, food, mineral processing, cement and power generation — for more than a century. Pneumatic conveying provides advantages over mechanical conveying systems in many applications, including those that require complex routing, multiple source-destination...
March 1, 2009
The patented design of this unit improves grinder efficiency The Annihilator (photo) is a twin-shaft, solids-reduction unit designed for a variety of industrial and municipal installations, including sewage lift stations, head works and sludge processing systems. The unit’s counter-rotating, hexagonal-shaft design coupled with its five-tooth, hardened-steel cutters provide the maximum shredding...
February 1, 2009
Conveyor selection is always defined by the larger project that it is meant to serve. First, there is a broad range of performance factors that must be met. Meanwhile, health, safety and environmental considerations usually outweigh the costs involved. After that, it comes down to the usual commercial considerations of price and delivery. This article covers the main parameters, benefits and disadvantages...
January 1, 2009
Portable mixers for pilot plant and small-scale production processing The PB Series pharmaceutical mixers (photo) feature a lightweight frame motor with a right-angle drive, 316 stainless-steel wetted parts, dry running mechanical shaft seal with CIP (clean in place) capabilities and vibration-free operation. Easily tailored to user requirements, the mixers can be configured with shafts up to 48-in. long...
November 1, 2008
As chemical processors continue to feel the pinch of the worsening economy, particle sizing is becoming an increasingly important issue because it can impact reaction rates and productivity. With the needs of chemical-process-industries (CPI) customers in mind, manufacturers of a variety of particle sizing equipment — from classifiers to hammer mills to grinders — are enabling their products to...
September 15, 2008
Accuracy and reliability, ease of use, the ability to handle special materials and compactness are all factors to consider when purchasing weighing, proportioning and feeding equipment for use in the chemical process industries (CPI). Because each CPI application differs, there’s a host of new technologies available to suit a variety of needs. Presented here is a round up of the latest developments...
August 15, 2008
  Caking occurs when an easy-flowing powder becomes cohesive after storage or transport, forming agglomerates comprised of individual particles that are bonded together. As a consequence, a powder that flowed freely during packaging may contain lumps when the package is opened by a customer; a silo that readily discharges a bulk material when in continuous operation may become plugged when its feeder...
July 15, 2008
The incorporation of floating solids into liquids is a common challenge throughout the chemical process industries (CPI) in operations ranging from polymerization reactions to fermentation processes and water treatment. Yet, it has received much less attention in comparison to processes involving heavy solids that tend to settle. Both established and recently proven design recommendations for incorporating...
June 15, 2008
In many plants that batch-blend bulk products, weigh batching is a manual, time-consuming operation in which ingredients are weighed individually before being discharged to a blender or some other process vessel. A significant number of such plants could benefit from the installation of an automated weigh-batching system. For small as well as large operations, an automated weigh-batching system can pay for...
June 15, 2008
TubeMaster, Inc. (Louisville, Ky.; has filed U.S. and foreign patents for Dog-leg — claimed to be the world’s first articulating catalyst-loading...
May 15, 2008
A. Alexander and F. Muzzio, Rutgers University Proper blender selection can improve the mixing of bulk solids. Be sure to consider post-blending segregation problems Mixing and blending of bulk solids occurs frequently in many industrial processes. Though small-scale mixing and blending functions were in use back in the early days of man (for example, mixing flour, salt, yeast and water to make bread)...
April 28, 2008
Several manufacturing procedures for chemical, cosmetic, pharmaceutical or food products distribute powder-like solids during the liquid or pasty phases of operations. The systems usually used for these operations require the injection of powders in an agitation tank. Dispersion is often performed by the same tool (located on the bottom of the tank) as the one that insures (if required) the emulsion of...
Pages: « Previous  6 7 8 9 10 11 12 13 14 [15] 16 17 Next »

Get more from
Get email updates in your inbox


Subscribe to:
Chemical Engineering Magazine

Chemical Engineering Magazine and Archives

Plant Cost Index

Join us on... Twitter LinkedIn

LinkedIn Groups

Our LinkedIn group is now over 33,000 members strong!

  1. Join other CPI professionals from all over the globe and share best practices, expertise, concerns and more.
  2. Provide feedback to Chemical Engineering Editors

Current members represent Worley Parsons, DuPont, SABIC, Fluor, Air Products, LyondellBasell, Nalco, Dow Chemical, Dow Corning, BASF, Jacobs Engineering, ExxonMobil, Shell, Chevron and more.

Join Now

We also offer the following subgroup for more targeted discussions:

Search the Buyers' Guide

Plant Cost Index

Facts at Your Fingertips (archive)

Ask the Experts

Back Issues
To access this area, please log in or create an account.
Forgot your password?
Request it now.
Live chat by BoldChat