Powder & Solids

on 'Powder & Solids'

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  • What Does It Cost To Own Your Dust Collector Filters?

    When choosing filters for your cartridge dust collector, a Total Cost of Ownership (TCO) calculation allows you to make the most economical and sustainable choice. TCO is a step-by-step evaluation that explores energy use, maintenance and other factors to compare the real costs of operating a dust collector with different filters. This white paper explains how to perform TCO calculations to save money, time and energy.

    Camfil Farr APC
    03/04/2011
  • Use CFD to Improve Crystallization | Chemical Processing

    In this article, Kumar Dhanasekharan, Ph.D., technical specialist with the computational fluid dynamics (CFD) specialist Fluent, Inc., shows how modelling crystallizers using CFD can help improve process understanding, control crystal size distribution (CSD) and improve pharmaceutical crystallization results.

    Fluent
    03/06/2006
  • Understanding Dust Explosion Dangers

    The unfortunate propensity of dust explosions to destroy entire facilities and claim lives is very real. Powder handling processes often are comprised of interconnected enclosures and equipment. Flame and pressure resulting from a dust explosion can therefore propagate through piping, across galleries, and reach other pieces of equipment or enclosures, leading to extensive damage. In this Chemical Processing Special Report, we take a look at the latest NFPA standards and dust explosion mitigation strategies. This Special Report covers:
     

    • Significant revisions to dust explosion standards – NFPA 654 major changes include new administrative requirements
    • How to defuse dust dangers - carefully consider and then counter risks of fire and explosion
    • Five common dust explosion misconceptions that can lead to a false sense of security

    Prepare your facility against potential dust explosion dangers. Download your copy of this Chemical Processing Special Report now.

    12/17/2013
  • Understanding and preventing fine powder flushing

    This nine-page whitepaper discusses the sources of powder flooding, the dangers it can pose to your equipment and the steps you can take to prevent it from happening.

    Diamondback Technology
    03/01/2005
  • Tips for Improving the Performance of Your Gravimetric Feeder

    Download the white paper to receive information on maximizing the performance of your gravimetric feeder. You will receive tips on how to choose and set up the right feeder for the specific material being fed in your process. Handling free flowing, adhesive, cohesive, aeratable, hygroscopic and pressure sensitive materials plus ways on where and how to properly install a gravimetric feeder are discussed.

    Schenck
    03/18/2014
  • Systems Reliability in Material Handling

    This 23-page white paper is from the Material Handling Institute's Classic Series and discusses the reliability of automated material handling systems.

    Material Handling Institute
    05/31/2005
  • Rectifier design for fuel ethanol plants reduces energy

    Plants have traditionally used trays in the distillation columns to produce fuels grade ethanol. Trays of various configurations have been adequate in this service and their technology is well founded. The ever-present desire to reduce the energy needed to produce a gallon of ethanol has opened the doors to structured packings being used in the rectification sections of ethanol distillation columns.

    Sulzer Chemtech USA
    04/10/2007
  • Process Moisture Analysis using FT-NIR

    Manufacturing a pure product can be critically important to the next steps in the manufacture of a powder-based product. As a result the removal of residual moisture and solvents from the crystallization, filtration and drying steps can be crucial to producing a stable product.

    Bruker Optics
    06/28/2006
  • Preventing Segregation During Powder Drying

    This 4-page case history by Jeroen van den Berg of Bolz-Summix discusses how changing process conditions within a conical screw dryer eliminated granulation and minimized product segregation.

    Bolz-Summix
    05/02/2006
  • Powder Processing Best Practices

    A material’s characteristics and how they may change during processing can affect HOW these materials are processed. Key factors affecting powders include aeration, moisture absorption, electrostatic charging to name a few. Many bulk solids are sensitive to heat and humidity. As these levels rise, either in the feeder system or via outside conditions, flow problems crop up. As the powder gains strength, jams and poor flow conditions begin to appear. Costly downtime and a loss of product are incurred while a search is made for a solution to the flow problems. In this Chemical Processing Powder eHandbook, we take a look at key factors affecting powders and today’s best practices for overcoming the processing of powders including:
     

    • Looking beyond the physical properties of particles and treating powder as a bulk entity
    • How scanners take volume to a new level - acoustics-based sensors can help accurately measure the volume of powders in vessels
    • How to determine a coating’s volatile content  - advancements in rapid loss-on-drying techniques significantly reduce testing time
    • Testing powder flow - advances in test methods help better predict flow behavior at elevated temperature and humidity levels

    Learn how to process powders efficiently. Download your copy of this Chemical Processing Powder eHandbook now.

    02/19/2014
  • Powder eHandbook: Preclude Powder Problems

    Process design and process safety are critical considerations in chemical production and processing. With design and safety paramount at the outset of any new development or equipment retrofit, firms can minimize risk exposure, maximize productivity and position themselves to remain compliant and competitive. Whether retrofit or new, chemical processing is continually challenged by combustible dust. Combustible dust can pose a hidden hazard when accumulation occurs in unseen locations such as in mechanical spaces, above false ceiling, ventilation systems and dust collection systems. In this Chemical Processing Powder eHandbook, we take a look at strategies and solutions for mitigating combustible dust hazards including:

    • Identifying hidden hazards - a case study outlining how a facility finds danger from accumulated dust and effectively addresses it
    • Powder flowability - how new measurement methods now make it easier to evaluate flow
    • Process safety -  properly designed weigh model can optimize safety and improve efficiency
    • A multivariate approach to powder processing -  an overview of several methods that can help determine which powder properties have the greatest influence on performance

    Learn how to preclude powder problems. Download your copy of this Chemical Processing Powder eHandbook now.

    11/11/2014
  • Powder eHandbook: Efficient Powder Process Handling

    The mechanisms of powder flow are complex. They are influenced by an array of different parameters; some relate to the particles’ physical attributes, such as size and shape, and others, such as humidity, to the system itself. Although there is a general understanding of these individual mechanisms, the multitude of interactions that govern the specific behavior of a given powder can many and in turn, affect how these powders are processed. In this Chemical Processing Powder eHandbook, we take a look at technologies and strategies for handling powders including:
    • How to Optimize Humidity for Efficient Powder Handling - too much or too little moisture can cause problems during processing and storage
    • How to Select the Right Conveying and Feeding System - successful bulk handling of calcium carbonate depends on a variety of factors
    • Suppressing Explosions for Process Protection - A properly designed and engineered suppression system offers many advantages
    Learn how to process powders efficiently. Download your copy of this Chemical Processing Powder eHandbook now.

    11/12/2013
  • Powder eHandbook: Combat Powder Processing Challenges

    In chemical production and processing, process design and process safety are crucial considerations – especially when powders are part of production and processing. Inherent challenges such as increasing throughput, accurately measuring powders to manage inventory and removing excess solvents are all challenges that chemical processors need to contend with. In this Chemical Processing Powder eHandbook, we take a look at these powder processing challenges and identify solutions and strategies to overcome them. Learn more about:

    • Vacuum conveying - customization, automation and safety
    • Matching level measurement system to a job - consider materials and work environment when choosing a device
    • Removing solvent vapors in diverse applications - dry and liquid ring vacuum pumps are alternatives to oil-sealed pumps
    • Meeting combustible dust compliance – how a facility tackles combustible dust with aportable central vacuum system

    Download your copy of this Chemical Processing Powder eHandbook now.

    02/24/2015
  • Particle Image Understanding – A Primer

    This paper will discuss the use of pattern recognition techniques to identify and differentiate different particle types contained in a heterogeneous solution. This application involves imaging the microscopic particles in real-time as they flow in a solution, segregating each individual particle as a separate image, and then applying pattern recognition techniques to differentiate the individual particle types.A framework for discussing the complexity of a pattern recognition operation in this application will be proposed, along with some specific examples showing how this framework applies.

    Lew Brown, Fluid Imaging Technologies
    09/03/2008
  • OSHA & NFPA Compliant: Keeping Your Plant Safe

    In March 2008, OSHA reissued its Combustible Dust National Emphasis Program (NEP) notifying approximately 30,000 companies nationwide that they will be targeted for inspections over the next few years. Mettler Toledo recognizes that many manufacturers are not up-to-date on the latest hazardous area compliance regulations or may not know that their industry is subject to those regulations. Don't wait until your facility receives a surprise visit from OSHA or worse yet, for a catastrophic incident to occur. Take the proactive approach to addressing the "hazardous area advisory level" in your facility.

    Mettler Toledo
    09/20/2010
  • Optimizing the Mixing of Powders into Liquids – Dust-free Induction and Dispersion

    Mixing of powders into liquids should be relatively easy. You pour powder onto the liquid's surface and then mix it in. However, this mixing can be very troublesome in production. This paper examines the various factors involved with mixing powders into liquids and how to avoid potential problems.

    Powder Technologies, Inc.
    10/22/2012
  • Level measurement of bulk solids and powders

    This 26-page white paper from Monitor Technologies discusses the difficulties in measuring bulk solids and powders in bins, silos and hoppers.  Download this document to learn which technologies are out there that can make this job easier.

    Monitor Technologies
    01/03/2005
  • Research Paper: Investigating the Relationship between Gypsum Purity and Hydrogen Sulfide Production under Anaerobic Conditions

    Calcium Sulfate (CaSO4) more commonly known as gypsum is a naturally occurring white crystalline mineral that has many different uses and applications. Gypsum in its hydrated form (CaSO4•2H2O) is used in the construction industry for fire resistance in buildings. Outside of the construction industry, gypsum is used in the food and fertilizer industry for calcium and sulfate fortification respectively. When gypsum is no longer usable, it is deposited in construction and demolition(C&D) landfills where anaerobic (low oxygen) conditions and the presence of sulfate-reducing bacteria promote the decomposition of wallboard/gypsum into hydrogen sulfide gas (H2S). Due to local and state regulations on odor control, these C&D sites monitor their fill for hydrogen sulfide gas.  This paper will couple two methods of analysis to observe the relationship between the purity of gypsum (calcium sulfate dihydrate) and hydrogen sulfide concentration as a sample is fermented by sulfate-reducing agents (e.g. bacteria). The scope of this research may be beneficial for industrial hygienists concerned with C&D landfill H2S levels or for incoming gypsum processing plants who suspect poor quality gypsum.

    09/12/2014
  • Integrating Process Weighing Data

    Efficient transfer of weighing process data to higher level PLC, MES or ERP systems makes manufacturing processes more efficient and more transparent. But identifying and implementing the most effective system for data transfer and integration can be challenging.

    Mettler Toledo LLC
    02/12/2013
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