• Login
    • Join
  • FOLLOW:
  • Subscribe Free
    • Magazine
    • eNewsletter
    Checkout
    • Magazine
    • News
    • Research
    • Markets & Technologies
    • Raw Materials
    • Top Companies
    • Directories
    • Jobs
    • Events
    • Microsites
    • More
  • Magazine
  • News
  • Research
  • Markets & Technologies
  • Raw Materials
  • Top Companies
  • Directories
  • Jobs
  • Events
  • Microsites
  • Current / Back Issues
    Features
    Business Corner
    Editorial
    Digital Edition
    eNewsletter Archive
    Our Team
    Editorial Guidelines
    Subscribe Now
    Advertise Now
    World Reports
    eBook
    Top Features
    Powder Coatings Market

    Performance Enhancing Additives

    The Role Of Kilowatt Hours In Measuring Mill Performance

    The 2023 Marine Coatings Market

    PPG: Treated Silicas Enable Tire Manufacturing Energy Savings and Reduced Complexity
    Breaking News
    Online Exclusives
    Distributor News
    Financial News
    Paint & Coatings Manufacturer News
    People In the News
    Price Increases
    Product News
    Raw Materials & Equipment
    Video Bites
    Suppliers News
    Live From Shows
    Top News
    BASF Donates $5,000 to High School STEAM Education Programs in Chattanooga Area

    Coating Additives Market Worth $10.5B by 2028: MarketsandMarkets

    California Sports Surfaces Celebrates 70 Years

    ROSS Offers Cost-Effective, Expertly Reconditioned Equipment

    AkzoNobel Shares Sustainable Architectural Solutions at Conference
    Top Companies report
    Market Research
    White Papers / Tech Papers
    Technical Papers
    Product Spec Sheets
    World Reports
    Adhesives and Sealants
    Aerospace Coatings
    Architectural Coatings
    Automotive Coatings
    Automotive Refinish
    Business Operation
    Color Trends & Forecast
    Construction Chemicals
    Corrosion Control
    Industrial Coatings
    Laboratory Equipment
    Marine Coatings
    Market Trends & Forecast
    Powder Coatings
    Production Equipment
    Radcure Coatings
    Special Purpose Coatings
    Wood Coatings
    "Green" Coatings

    California Sports Surfaces Celebrates 70 Years

    ROSS Offers Cost-Effective, Expertly Reconditioned Equipment

    Selektope Keeps Global Mercy’s Hull Barnacle-Free

    PPG Introduces High-Performance UF Membranes and Filter Elements

    ON VOLUDE is Theme of BASF’s 2023-2024 Automotive Color Trends Collection
    Additives
    Binders
    Pigments
    Solvents

    Coating Additives Market Worth $10.5B by 2028: MarketsandMarkets

    Micro Powders Showcases Natural, PTFE Alternative Additives at 2023 WCS

    OQ Chemicals Announces Price Increases for Oxo Intermediates

    BASF Broadens Monomers Portfolio, Launches Bio-based 2-Octyl Acrylate

    “MyCarbonFootprint”: BASF Launches Dashboard for Sustainable Procurement
    Company Capabilities
    Buyers Guide
    Distributor Guide
    Add New Company
    International Buyers Guide Companies
    Shepherd Color Company, The

    W. R. Grace & Co.

    Active Minerals

    Siltech Corporation

    EPS
    Industry Events
    Webinars
    Live From Show Event
    Top Events
    The Gulf Coatings Show

    Western Coatings Symposium 2023

    Pacific Coatings Show

    CHINACOAT 2023

    ABRAFATI 2023
    Companies
    White Papers/Tech Papers
    Product Spec Sheets
    Equipment
    Literature/Brochures
    Videos
    International Buyers Guide Companies
    Shepherd Color Company, The

    W. R. Grace & Co.

    Active Minerals

    Siltech Corporation

    EPS
    • Magazine
      • Current / Back Issues
      • Features
      • Editorial
      • Business Corner
      • Digital Edition
      • eNewsletter Archive
      • Editorial Guidelines
      • Subscribe Now
      • Advertise Now
    • Breaking News
    • Directories
      • Buyers Guide
      • Distributor Guide
      • Corporate Capabilities
      • Trade Associations
      • Add Your Company
    • Markets & Technologies
      • Adhesives and Sealants
      • Aerospace Coatings
      • Architectural Coatings
      • Automotive Coatings
      • Automotive Refinish
      • Business Operation
      • Color Trends & Forecast
      • Construction Chemicals
      • Corrosion Control
      • Industrial Coatings
      • Laboratory Equipment
      • Marine Coatings
      • Market Trends & Forecast
      • Powder Coatings
      • Production Equipment
      • Radcure Coatings
      • Special Purpose Coatings
      • Wood Coatings
      • "Green" Coatings
    • Raw Materials
      • Additives
      • Binders
      • Pigments
      • Solvents
    • World Reports
      • Africa Report
      • China Report
      • India/Asia Pacific Report
      • Europe Report
      • Latin America Report
      • Market Research
      • Russian Report
    • Top Companies
    • Online Exclusives
    • Glossary
    • Slideshows
    • Experts Opinions
    • Blog
    • eBook
    • Infographics
    • Videos
    • Podcasts
    • Whitepapers
    • Jobs
    • Microsites
      • Companies
      • White Papers/Tech Papers
      • Product Spec Sheets
      • Equipment
      • Literature/Brochures
      • Videos
    • Events
      • Industry Events
      • Live From Show Event
      • Webinars
    • About Us
      • About Us
      • Contact Us
      • Advertise With Us
      • Privacy Policy
      • Terms of Use
    Features

    The Role Of Kilowatt Hours In Measuring Mill Performance

    The significance of Kilowatt Hour measurements as applied to media milling technology.

    The Role Of Kilowatt Hours In Measuring Mill Performance
    Photo courtesy of Hockmeyer Equipment
    The Role Of Kilowatt Hours In Measuring Mill Performance
    Chart courtsey of Hockmeyer Equipment
    Herman Hockmeyer, President of Hockmeyer Equipment08.30.23
    Much has been said about the significance of Kilowatt Hour (KWH) measurements as applied to media milling technology. The thinking has been energy in equals results. This is a simplification of a more complex matrix and is dependent upon other variables such as raw material characteristics, media size and density, as well as the design and conditions under which the mill operates. The purpose of this paper is to “get into the weeds” about how relative measuring performance in KWHs can be.

    To begin, one must ask if KWH consumption can be influenced by the efficiency of the device being used to perform the dispersion. What would affect performance to cause this? Enhancing the conditions in which the energy transfer is occurring is one example.

    Using the identical media size, type and amount with identical KW input, the time to standard will diminish by anywhere from 20% to 80% providing allowance of another dimension of thought when formulating: looking at the ratio of surface area of the solids to the vehicle rather than just the weight or volume.

    For example, we know that as we grind down an aggregate, the surface area of the now dispersed particles increases exponentially. It is not truly exponentially, due to the imperfection of leaving a remainder of something less than a D100 target. However, the closer to D100 target, the more perfect the uniformity at the target.

    By using the ratio of surface area solids to vehicle as a measure, solutions to dispersion problems become more apparent. As the particles are brought to their true size or ground down beyond that size, additional vehicles must be added to compensate the demand of the additional surface area. If not, the viscosity will increase, flow through the mill will decrease and the dispersion will slow and eventually stop improving. It will likely become unstable if pushed beyond those boundaries, resulting in re-agglomeration of particles. Depending upon the desired characteristics of the finished dispersion, particle size will have a great influence as will any vehicles suspending and separating the particles.

    Conventional dispersion is done under pressure in media mills, resulting in a decrease in efficiency in unnecessary KWH consumption. This is due to the back pressure and cushioning effect of the entrapped air within the premixed feedstock.   Air entrapment is further exacerbated by pressuring the large air bubbles into smaller air bubbles creating a more uniform impurity in the dispersion. The entrapped microbubbles distort both the weight and volume of the finished product, leading to accuracy distortions during the filling process. The entrapped air will also affect the quality and durability of the finished product. This is particularly true of water-based dispersions.

    Efficiency of the dispersion process can be substantially enhanced through willingness to embrace this different perspective. Change is challenging but it is the only way to progress into the future. Here are changes that will improve the process:

    1) Premix should be dispersed under vacuum either with the appropriate vacuum rotor-stator or vacuum media mill. This depends upon the size and characteristic of the aggregate or agglomerate that will allow the device to accomplish its mission in the shortest time.

    Both machines generate their own internal vacuum during the process, extracting air from the feedstock. This is paramount and without it, distortional time variations during the final milling process will occur.

    2) Prior to fine milling, the appropriately sized filter must be used to extract any trash or aberrant particles from the initial dispersion. Otherwise these contaminants will continue to exist and distort the purity and uniformity of the fine dispersion to follow. The premix should be as close to a D100 target as possible.

    Media size and type should be complementary to the particle size in the next step. Fine grinding should be done in a vacuum media mill, allowing for vehicle additions to satisfy the increasing surface area demand of the solids as their particles are continuously separated and exposed to the vehicle. Unless this is permitted, the proof of efficiency, quality and performance of the finished product cannot be reached.

    3) Details such as media size, density, quality, peripheral speeds of the mill, throughput, etc. are factors that require knowledgeable judgment. Kilowatt hours compressing the air in the feedstock are wasted in a pressure mill. Localized grinding under pressure creates hot spots resulting in temperature zones and increased media and mill wear.

    4) Vacuum milling amplifies throughput while simultaneously reducing KWHs, hot spots, media wear, mill wear and air. Temperature control is greater than that of pressure mills because the feedstock is drawn through a much larger screen by downstream suction.

    Dwell time in a vacuum mill is a matter of a second while recirculation rate is thousands of gallons per hour. The resulting rapid reduction of oversized particles in the premix is consequential since they will be the “fly in the ointment” and cause costly, extended milling time in the fine grinding part of the process.

    The takeaway from this discussion is that KWHs are a measure of energy over a period of time. How they are consumed is a measure of efficiency. Efficiency is a function of conditions and formulation. Performance is a function of perception confirmed by proof.

    All aspects of proof of this improvement are available at the Hockmeyer testing laboratory with the guidance of our R&D group that developed the technology. Open minds
    open doors. 

    Based in Elizabeth City, NC, Hockmeyer Equipment Corp. has been a provider of wet grinding and dispersion process solutions for more than 80 years. 
    Related Searches
    • Production Equipment
    Related Knowledge Center
    • Production Equipment
      Loading, Please Wait..
      Trending
      • PPG Introduces High-Performance UF Membranes And Filter Elements
      • Hempel Inaugurates Production Facilities In China
      • ON VOLUDE Is Theme Of BASF’s 2023-2024 Automotive Color Trends Collection
      • Tim Knavish Elected PPG Chairman And CEO
      • Hugh Grant To Retire From PPG Board Of Directors
      Breaking News
      • BASF Donates $5,000 to High School STEAM Education Programs in Chattanooga Area
      • Coating Additives Market Worth $10.5B by 2028: MarketsandMarkets
      • California Sports Surfaces Celebrates 70 Years
      • ROSS Offers Cost-Effective, Expertly Reconditioned Equipment
      • Selektope Keeps Global Mercy’s Hull Barnacle-Free
      View Breaking News >
      CURRENT ISSUE

      September 2023

      • Powder Coatings Market
      • Performance Enhancing Additives
      • The Role Of Kilowatt Hours In Measuring Mill Performance
      • View More >

      Cookies help us to provide you with an excellent service. By using our website, you declare yourself in agreement with our use of cookies.
      You can obtain detailed information about the use of cookies on our website by clicking on "More information”.

      • About Us
      • Privacy Policy
      • Terms And Conditions
      • Contact Us

      follow us

      Subscribe
      Nutraceuticals World

      Latest Breaking News From Nutraceuticals World

      D2C Supplement Brand Launches Blood Sugar Support Supplement, Gluco-Control
      Natrol Launches First Non-Melatonin Sleep Supplement
      Metagenics Releases Consumer Survey on Menopausal Support Supplement
      Coatings World

      Latest Breaking News From Coatings World

      BASF Donates $5,000 to High School STEAM Education Programs in Chattanooga Area
      Coating Additives Market Worth $10.5B by 2028: MarketsandMarkets
      California Sports Surfaces Celebrates 70 Years
      Medical Product Outsourcing

      Latest Breaking News From Medical Product Outsourcing

      MPO's Most-Read Stories This Week—Sept. 30
      Dentsply Sirona Names Former NuVasive CEO Lucier as Chairman
      SeaStar Medical Gets Breakthrough Nod for Selective Cytopheretic Device
      Contract Pharma

      Latest Breaking News From Contract Pharma

      Univercells Expands into the U.S. With New Offices in Andover, MA
      Evecxia Therapeutics, Quotient Sciences Complete Clinical Milestone for Depression Treatment
      Ionis, Roche Partner on RNA-targeted Programs for AD and HD
      Beauty Packaging

      Latest Breaking News From Beauty Packaging

      ScentAir Debuts Room Sprays & More
      African Pride Launches On-Campus Activations
      Sharper Image Debuts Revel Hair Tools
      Happi

      Latest Breaking News From Happi

      Hair Searches in the US Change ‘Coarse’ with Growing Demand for Textured Hair Solutions
      Boss Bottled Celebrates 25th Anniversary
      In the Case of Efficacious Cosmetic Buys, Cost is Not A Factor Says Mintel
      Ink World

      Latest Breaking News From Ink World

      W+D to Premiere i-Jet 3 Inkjet at Printing United
      MicroDynamics, All Printing Resources Partner to Represent Veritas
      Weekly Recap: Wikoff Color, BASF, Latin America Top This Week’s Stories
      Label & Narrow Web

      Latest Breaking News From Label & Narrow Web

      TLMI's LLT grows, Labelexpo Europe details big numbers and more
      SABIC and partners launch bio-based IML solution for food packaging
      tesa completes expansion of Michigan manufacturing facility
      Nonwovens Industry

      Latest Breaking News From Nonwovens Industry

      Weekly Recap: Thomas Receives INDA Lifetime Technical Service Award, ExxonMobil Works with JL Goor
      Greentech Introduces Air Filter with Advanced Odor Elimination
      Ontex Divests Pakistan Operations to ASAIA Holding
      Orthopedic Design & Technology

      Latest Breaking News From Orthopedic Design & Technology

      ODT's Most-Read Stories This Week—Sept. 30
      Lazurite Adds Benchmark Medical as a Distributor for its ArthroFree Wireless Camera System
      ChitogenX Granted New U.S., Canadian ORTHO-R Patent
      Printed Electronics Now

      Latest Breaking News From Printed Electronics Now

      Weekly Recap: Mergers and Acquisitions, First Solar Top This Week’s Stories
      Jabil Posts Fourth Quarter, Fiscal Year 2023 Results
      Ink-Borne ‘Chiplets’ Could Lead to Printable Displays, Electronics and More

      Copyright © 2023 Rodman Media. All rights reserved. Use of this constitutes acceptance of our privacy policy The material on this site may not be reproduced, distributed, transmitted, or otherwise used, except with the prior written permission of Rodman Media.

      AD BLOCKER DETECTED

      Our website is made possible by displaying online advertisements to our visitors.
      Please consider supporting us by disabling your ad blocker.


      FREE SUBSCRIPTION Already a subscriber? Login