A new dual bag nozzle system has been designed, tested, and shown to effectively reduce workers' exposure to the dust associated with the bag filling process at mineral processing plants. This U.S. Bureau of Mines system is composed of a nozzle within a nozzle. The inner nozzle is used to fill the bag with product. The outer nozzle exhausts excess air from the bag after filling is completed. This depressurizes the bag and reduces product loss through the bag valve during ejection from the fill station and during the conveying process. An improved bag clamp also reduces product blowback during bag filling. Dust reductions of 80 to 90 pct have been achieved for both the bag operator and the workers loading the bags onto pallets. There has also been a 90-pct reduction in product blowback during bag filling, which can account for tremendous product savings.
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.