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Archives :: Processing & Handling :: Solids Handling

Displaying 1 - 20 of 60 stories.
March 1, 2010
Powder agglomeration is used in a wide variety of the chemical process industries (CPI), and a virtually endless number of process options are available. Selection requires engineers to make a substantial number of design decisions, such as the choice between wet or dry processing, the intensity of mixing and shear rates, continuous versus batch operation, cross contamination of products and ease of cleaning. These choices must be made in light of desirable agglomerate end-use properties. Key agglomeration mechanisms and their impact on agglomeration processing are reviewed in this article. The impact on process selection is also touched upon within the context of mechanisms....
http://www.che.com/processing_and_handling/solids_handling/Agglomeration-Technology-Mechanisms_5497.html
January 1, 2010
Particulate buildup and other material flow problems are common hurdles wherever dry materials find application in the chemical process industries (CPI). Since manual intervention is...
http://www.che.com/processing_and_handling/solids_handling/A-Sound-Solution-to-Material-Flow-Problems_5399.html
January 1, 2010
This weigh belt helps minimize material build up Thayer Scale- Hyer Industries The Model SI Ultra-Sanitary Insertion weigh belt (photo) is designed to enable effective and efficient...
http://www.che.com/processing_and_handling/solids_handling/weighing/Focus-on-Weighing_5380.html
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...
http://www.che.com/processing_and_handling/solids_handling/feeding_and_conveying/A-vacuum-conveyor-that-is-GMP-compliant_5336.html
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...
http://www.che.com/processing_and_handling/solids_handling/milling_grinding_and_screening/Handle-high-volume-applications-with-this-screener_5345.html
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....
http://www.che.com/processing_and_handling/solids_handling/milling_grinding_and_screening/Screeners-target-efficiency_5321.html
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:...
http://www.che.com/processing_and_handling/solids_handling/testing_and_modeling/Measuring-Dust-and-Fines-In-Polymer-Pellets_5028.html
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 is, however, not particularly popular with the users of impact grinding systems because it is energy-intensive, associated with a high noise level and frequently also gives rise to time-consuming maintenance work. In spite of this, impact comminution is still the most cost-effective solution in many processing operations....
http://www.che.com/processing_and_handling/solids_handling/milling_grinding_and_screening/Fine-Grinding-With-Impact-Mills_4989.html
July 1, 2009
Distribute and weigh solid library compounds automatically; These bulk bag fillers have options for automatic operation; For explosive areas, this weight indicator is flexible and mobile; and more...
http://www.che.com/processing_and_handling/solids_handling/weighing/Focus-on-Weighing-and-Proportioning_4921.html
June 1, 2009
The newest developments, discussed below, are helping chemical process plants to improve product purity, reduce energy costs and equipment maintenance expenses, and streamline manufacturing operations....
http://www.che.com/processing_and_handling/solids_handling/feeding_and_conveying/Vibratory-Feeders-And-Conveyors-Useful-Selection-Tips_4815.html
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 limited, and several hours of residence time are often necessary. To meet low moisture or VOC targets, two unit operations may be required. An economical way to provide the extended residence time required for slow, diffusion-limited drying is to use a bin or silo that has been modified to allow injection of a sweeping gas and, in some cases, to provide heating. These unit operations, which have a variety of names including gravity dryers, offer numerous advantages.

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http://www.che.com/processing_and_handling/solids_handling/bins_silos_and_storage/Designing-and-Operating-Gravity-Dryers_4768.html
April 1, 2009
Among all the components of a pneumatic conveying system, bends — despite their apparent simplicity — are probably the least understood and most potentially problematic for process operators. Findings from various research studies are often not consistent, and often times public findings do not match field experience. The importance of bends in any pneumatic conveying assembly cannot be overstated since — if not properly selected and designed — they can contribute significantly to overall pressure drop, product attrition (degradation) and system maintenance (due to erosive wear). This article summarizes the key concepts, outline key metrics used to evaluate bend performance, and provide guidance for their selection. The discussion is limited to dilute-phase conveying....
http://www.che.com/processing_and_handling/solids_handling/feeding_and_conveying/Understanding-Bends-In-Pneumatic-Conveying-Systems_4655.html
March 1, 2009

The patented design of this unit improves grinder efficiency; When spark reduction is important, use these grinding discs; Achieve small media milling with this production mill; Get tight control of a process with realtime remote mill operation; and more

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http://www.che.com/processing_and_handling/solids_handling/milling_grinding_and_screening/Focus-on-Milling-and-Grinding_4585.html
February 1, 2009
This article covers the main parameters, benefits and disadvantages of four different types of conveyors, namely flexible screw, aero-mechanical, vacuum and pneumatic. Meanwhile, the task of working with vendors — both after and often during the choice in conveyor type has been made — is discussed...
http://www.che.com/processing_and_handling/solids_handling/feeding_and_conveying/Selecting-A-Conveyor_4493.html
January 1, 2009
Equipment and services for mixing and blending are highlighted here....
http://www.che.com/processing_and_handling/solids_handling/blending/Focus-on-Mixing-and-Blending_4448.html
November 1, 2008
As chemical processors continue to feel the pinch of the worsening economy, particle sizing is becoming an increasingly important issue because...
http://www.che.com/processing_and_handling/solids_handling/milling_grinding_and_screening/Newsfront-Particle-sizing-When-size-matters_4312.html
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 in weighing, proportioning and feeding technology and equipment.

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http://www.che.com/processing_and_handling/solids_handling/feeding_and_conveying/Newsfront-Weighing-In_4164.html
August 15, 2008
Click here for full pdf version of this article - includes all graphs, charts, tables, and author information   Caking occurs when an easy-flowing powder becomes cohesive after...
http://www.che.com/processing_and_handling/solids_handling/Solids-Processing-Prevent-Caking-and-Unintended-Agglomeration_4084.html
July 15, 2008
Click here for full pdf version of this article - includes all graphs, charts, tables, and author information The incorporation of floating solids into liquids is a common challenge...
http://www.che.com/processing_and_handling/solids_handling/blending/Feature-Report-Incorporate-Floating-Solids-Into-Liquids_4011.html
June 15, 2008
Click here for full pdf version of this article - includes all graphs, charts, tables, and author information At 2,064 ft as of this past April, the unfinished Burj Dubai skyscraper in...
http://www.che.com/processing_and_handling/solids_handling/Newsfront-Chemistry-for-Construction_3938.html
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