Vacuum Cleaner Dust
Hi Pakorn,
When you buy a vacuum cleaner for your wife, do you demand that the machine should be guaranteed to pick up 100% of the dust, even if it is wet sludge, or mud carried in on your shoes?
When you blow air, you have pretty good control over the jet stream, and you can predict how far the jet will project, and the shape of the jet, and its velocity profile in 3D.
When you suck, once you get beyond one diameter from the suction inlet you have practically lost all control of the air, because the air velocity has dropped to such an extent that it cannot capture anything other than dust particles less than 1 micron in diameter.
We all are constrained to work with Dr Bernoulli's equation to predict flow and velocity of fluids. Once we add a solid particle, we also have to model Stoke's Law into the equation.
What exactly do you want us to guarantee? There are things which can be done in Disneyland, and on graphically enhanced blockbusters which cannot be reproducted in real life.
Regards - Sgt John.Rz
www.latviantourists.com.au ■
Re: Mill Scale From Cold Wire Rolling
Hi John,
If you read my post carefully you would see that I am looking for "a solution".
I accept the fact that there are limitations in any system or design. If your product too is unable to meet our needs then there's nothing to be defensive about.
The fact that I have not completely dismissed pneumatic conveying as the possible solution is the reason why I submitted the previous post in hope of getting a second opinion or advice from someone who may have experience working with mill scale.
Regards,
Pakorn ■
Mill Scale from Cold Wire Rolling
Hi All,
I'm currently looking for a solution that can capture 100% of mill scale produced from cold wire rolling. The dust extraction company that I've contacted commented that they could not guarantee 100% capturing. In view of the health risk to our operators, I'm wondering if anyone who may have experience with handling mill scale would be able to give me some advice.
We do have a number of dust extraction units on site but these units currently are extracting only about 50% of the 2000kg of the mill scale we produce per day, the remaining 50% are being cleaned up manually by our operators throughout the day and at the end of the shift. The situation is worse when it rains and the mill scale become wet and blocks up our extraction pipetwork.
Any help or advice would be greatly appreciated.
Pakorn
email: burroughsp@onesteel.com ■