Rubber & Mn-Cr Alloy Cast Composite Liner for SAG Mill

Key Advantages

Fairly consistent quality
NGZR has over 10 years of experience in R&D, manufacturing and after-sales service for Mn-Cr alloy steel cast mill liners and linings serving the mining and cement industries. We guarantee product quality and operating life to all customers.

Reduced operating cost
Mn-Cr alloy cast & Rubber composite liners last long and keep a stable quality. NGZR has a large production capacity, an advanced lost foam process and a fully automatic precision casting line. This lets us offer all customers more competitively priced products, so their unit production cost drops below its earlier level.

Tailored alloy steel composition
To meet client requirements, the NGZR foundry can adjust the alloy steel composition (Mn: 11-23%) or add other special metallic elements (Mo /Cu /Ni/Cr etc). Combined with special heat treatment, this gives the cast liner particular mechanical properties that suit each customer's different working conditions.

Custom drawings, sizes and shapes
To meet client requirements, the NGZR foundry can adjust the alloy steel composition ( Mn / Cr) or add other special metallic elements (Cr/ Mo /Cu /Ni, etc.). Combined with special heat treatment, this gives the cast liner particular mechanical properties that suit each customer's different working conditions.

Custom drawings, sizes and shapes
The NGZR foundry can produce customized mill liners from the customer's drawings of existing ones. We can also modify the shape, thickness and wear quality of existing mill liner plates, so the customer spends less on liners and gains higher production efficiency.

On-site measurement & installation guidance
Should a customer be unable to supply drawings of the mill liner currently in use, NGZR will send a service engineer free of charge to measure its size and design, as part of a one-stop service.
On request, NGZR can offer a door-to-door installation guidance service, which is chargeable.

Applications

Mn-Cr alloy cast liners and rubber & ceramic composite liners suit ball mills, SAG mills and AG mills. The industries where they are applied include mining, cement, coal-fired power plants, concrete & construction materials, and the chemical, pharmaceutical, food and fertilizer industries, etc.

Product Design & Application

How can the right alloy material and shape be chosen to cut production cost?

1. Choose the alloy material to match the size of the existing mill
Once the existing mill grows large in diameter (more than 6 meters), the liner takes greater impact force from the grinding media and minerals, so it must be tougher to avoid breaking.
For mill diameters over 6 meters, a composite liner of Mn-Cr alloy casting & Rubber & Ceramics can be chosen.

2. Choose the liner thickness to match the RCM
When the RCM (reliability-centered maintenance) interval of the mill gets longer, the mill liner needs to be thicker. Yet a thicker liner weighs more in total, which raises its purchase cost and lowers production efficiency.
Therefore, pick the thinner size that fits the mill; a reasonable RCM interval raises production efficiency and cuts production costs.

3. Develop and design a better liner shape 
An improved profile (the steps on the inside of the cylinder liner) lets the mill grind more effectively, raising both its output capacity and its quality!
NGZR can help customers with the research and development of the liner shape for their existing mill machinery.