The critical number of revolutions of various ball mills is proportional to the diameter D, and the absolute value of the critical number of revolutions is not easy to find. At present, only the formula for calculating the theoretical critical number of revolutions is widely used. The formula for calculating the critical number of revolutions: n. =42.2/D1â„2 rpm Where: D - the inner diameter of the ball mill. Meter n. - critical number of revolutions When a non-smooth lining is used, the ball filling filling rate is 40-50%, and the grinding concentration is large, the calculation result of the formula is relatively close to the actual one.
Electric water kettle
If you are new to the concept of using an electric
kettle, you might be overwhelmed by the variety of electric
kettles that are displayed on the store shelves and have difficulty deciding which one would be
the best to suit your individual needs or desires. This
introduction will give you some basic
information about some of the features that are available on
various types of electric kettles so that you can make a more informed decision
when choosing one for use in your home.
Features:
Spend few minutes to boil : After 5 minutes, hot water will
finish for you to drink.
3 protection functions : The on/off button is on the handle, making
it easy to turn the kettle off when you pick it up. A concealed heating unit reduces
the amount of buildup in the kettle.
It will be a problem when you forget to
close the button.Once the water boils the kettle shuts itself off.Do not have
to worry about damaging it by letting it run dry. When water runs dry,It will
cut the electric by itself.
Multiple Cups: Water can be loaded to
1.8Liter.
Materials :
Food grade stainless steel, more healthy
and hygienic. PP handle wieh heat insulation material provides scald
resistance. Durable controller performance with 360 degree rotation cordless
base design.
OEM & ODM service : Try
best to support you during production and provide better after-sales
service.Enhance your brand popularity.
Application:
Make a cup of tea.
Boil eggs.
Cook noodles.
Electric Water Kettle,Aluminium Electric Water Kettle,Mini Electric Water Kettle,Stainless Steel Electric Water Kettle Guangzhou Taipeng Electrical Appliances Technology CO., LTD. , https://www.taipengelectrics.com
Do you know what is the critical number of revolutions? How to calculate?
The outermost ball in the ball mill just rotates with the cylinder without falling, and the number of revolutions of the ball mill at this time is called the critical number of revolutions.