18
2012
-
07
Configuration Method for Diameter and Length of Steel Rods in a Rod Mill
Author:
The diameter of the steel rods should be selected appropriately: they must be capable of crushing large feed lumps while also providing sufficient surface area. Smaller-diameter rods have a larger surface area and cause less wear on the lining plates. However, smaller-diameter rods are more expensive per unit weight and have a shorter service life, as they quickly wear down to an unusable size of 25–40 mm. Once worn to this size, the rods become prone to fracture and bending.
(1) Diameter configuration of steel rods in a rod mill
The diameter of the steel rods should be selected appropriately: they must be capable of crushing large feed lumps while also providing sufficient surface area. Smaller-diameter rods have a larger surface area and cause less wear on the lining plates. However, smaller-diameter rods are more expensive per unit weight and have a shorter service life, as they quickly wear down to an unusable size of 25–40 mm. Once worn to this size, the rods become prone to fracture and bending.
When the maximum diameter of the steel rods is 100–115 mm, the rods typically fracture once their diameter has worn down to 38 mm; the resulting fragments can be discharged from the machine during operation. When the maximum rod diameter is only 50–65 mm, the worn rods tend to bend easily, necessitating regular removal of those that have fallen below the discard diameter. The commonly used rod diameters range from 50 to 100 mm.
(2) Length Configuration of Steel Rods in the Rod Mill
The length of the steel rod shall be equal to the effective cylinder length (i.e., the net length obtained by subtracting the end-cap liner thickness from the cylinder length) minus 150 mm, or alternatively, the nominal cylinder length minus 300–400 mm.
(3) Proportioning of steel rod loading dimensions for rod mills
The initial method for sizing the steel rods in terms of load proportion is similar to the method used for sizing the steel balls in a ball mill.
Previous page
Previous page
Providing steel ball product solutions!
Ruinion Casting & Forging has been dedicated to the grinding industry for over a decade.
Contact Us
Email: steelball@ruiniansteelball.com
Address: Wuji Industrial Zone, Guanzhuang Subdistrict Office, Zhangqiu City, Shandong Province, China
Follow Rui Nian