Conventionally, grinding media was made of Cast iron, Cast steel and even through Forged process in EN specifications. However, High Chrome Grinding media has surpassed the conventionally produced grinding media in terms of performance and is now widely being used by all industries across the globe.
Size and Tolerance parameters
|S No.||Size||Weight (in gms.)||max (mm) x||max (mm) y or y’||>Max (mm) Z||Ovalisation Max (%)|
|1||Ball Dia 15||0.014||0.5||1.5||1.5||17||7.5|
|2||Ball Dia 17||0.021||0.5||1.5||1.5||19||7.5|
|3||Ball Dia 20||0.033||0.5||1.5||1.5||22||7.5|
|4||Ball Dia 25||0.065||1||2||2||28||7|
|5||Ball Dia 30||0.113||1||2||2||33||6.5|
|6||Ball Dia 40||0.268||1||2||2||43||6|
|7||Ball Dia 50||0.523||1||3||3||54||5.5|
|8||Ball Dia 60||0.904||1||3||3||64||5.5|
|9||Ball Dia 70||1.436||1||3.5||3||74||5.5|
|10||Ball Dia 80||2.144||1.5||3.5||3||85||5.5|
|11||Ball Dia 90||3.050||1.5||3.5||3||95||5.5|
|12||Ball Dia 100||4.189||2||4||3||105||5.5|
|13||Ball Dia 110||5.574||2.5||4.5||3||115||5|
|14||Ball Dia 120||7.237||2.5||5||3||126||5|
|15||Ball Dia 125||8.179||2.5||5||3||131||5|
Ovalisation for New Balls
Definition of ovalisation ‘o’ :- ‘o’ = (Ø max – Ø min ) x 100
(Ø max + Ø min)/2
The grinding media is manufactured by us in various specifications. The exact specification is suggested by us to the customer depending on various factors such as:
- Material to be ground
- Granulometry of the material
- Grinding process (Wet/Dry)
- Importance of wear mechanisms involved (abrasion, corrosion, impact).
- Factors influencing the mill.
The cement industries are using the most diverse range of grinding media, ranging from 17 mm to 90 mm, which is divided in the 2/3 chambers.
The large focus is on the power consumption and increased output. The grades of HCGM of SBIPL are such that the balls retain their shape as they tend to wear. De-shaped balls are like dead balls, which do not assist in effective grinding, and tend to slide as they move up the periphery of mill, instead of falling or toppling from the top. Such dead load decreases the grinding efficiency, increases the power consumption of the mill and also results in decreased output.
Balls supplied by SBIPL overcome these problems, by giving such grades of HCGM, which have uniform hardness to the core, have high wear resistance and they wear uniformly.
SBIPL is supplying to various cement companies in the country, and also exporting about 35% of it’s production in this area. We are also on the Global supply list of cement majors like Heidelberg.