More than 60 size distributions resulting from the breakage of single particles of 4 minerals in rigidly mounted rolls with different combinations of feed size and roll gap have been analyzed in great detail as to their shape and structure and the effect of energy consumption. A number of interesting and useful "regularities" have been observed. The most important ones are that the size distributions are self-similar in a dimensionless size which has been rescaled by the median size. The inverse of the median size in turn varies linearly with grinding energy. The grinding energy is determined in the first instance by the material, feed size, and roll gap. Comparison based on equal energy input shows that single-particle crushing is invariable significantly more efficient than ball milling. The rate of increase in the reduction ratio--an index of the size reduction achieved-per unit of energy input is 3 to 5 times more in single-particle comminution in the initial stages of grinding and subsequently up to 2 times more when the size spectra have become self-preserving.
Links with this icon indicate that you are leaving the CDC website.
The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website.
Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
You will be subject to the destination website's privacy policy when you follow the link.
CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website.
For more information on CDC's web notification policies, see Website Disclaimers.
CDC.gov Privacy Settings
We take your privacy seriously. You can review and change the way we collect information below.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
Cookies used to make website functionality more relevant to you. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests.
Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data.
Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. These cookies may also be used for advertising purposes by these third parties.
Thank you for taking the time to confirm your preferences. If you need to go back and make any changes, you can always do so by going to our Privacy Policy page.