Laboratory Testing & General Mineral Processing Engineering

Laboratory Testing & General Mineral Processing Engineering

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Rod Mill Shell Liners Material (1 reply)

F
Fatemeh
5 years ago
Fatemeh 5 years ago

We produce steel casting liners for SAG/Ball mills. One client in Iron ore mine is using rod mill in first stage grinding. The shell liners are rolled steel and work for 7 months. Now they want to switch to cast liners and ask for a proper material in order to increase the lifetime to 12 months. All technical info I have is as below:

Mill Technical Data:

Size (ø×L): 3.85×5.5 m

Type of ore: Iron ore, operating at first stage grinding-wet process

Size of feed material: from 0.05mm to 15mm and higher

Mill Output: 360 ton per hour

Diameter of Rods: 100 mm

Total weight of rods in the mill: 115 ton

Direction of rotation of the mill: counterclockwise

We produce SAG mill liners in Cr-Mo cast steel (325-375 BHN), but we do not know rod mills. Is it more exposed to impact and the Cr-Mo will crack? or here wear dominates and we can use other material with better wear impact, e.g. Ni-hard or high Cr cast steel with more than 48-52 HRC?

d
David
5 years ago
David 5 years ago
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Well typically a SAG Mill liner is in Chrome Moly Steel (Brinell Hardness 301-402) and Rod Mill liner would be in High Chrome Iron (590-750 Brinell).

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