High-Performance Mill Liners: Guarding Your Grinding Core with Heavy Casting & Precision Machining

The mill liner system is the heart of your grinding circuit, directly determining efficiency, energy consumption, media wear, and maintenance costs. Leveraging our 85-ton heavy casting capability and micron-level precision machining, Jinyang provides a complete liner solution for everything from large AG/SAG mills to high-efficiency vertical mills. We manufacture strictly to drawing, ensuring every liner offers superior wear resistance, precise dimensions, and perfect fit. Our goal is to maximize your equipment availability and grinding profitability.

Full Compatibility with Leading Mill Types & Designs

Our liner portfolio serves as direct, drop-in replacements for the industry's most common grinding mills, ensuring trouble-free installation and restored performance:

• Autogenous (AG) & Semi-Autogenous (SAG) Mill Liners: For high-impact, high-tonnage primary grinding stages.

• Ball Mill Liners: For secondary and regrind applications.

• Vertical Stirred Mill Liners (e.g., Metso^® VTM Series Vertimill): For fine and ultra-fine grinding applications, and regrinding applications.

We manufacture strictly according to original OEM drawings provided by the customer or based on optimized designs developed from deep process knowledge. For vertical mills, our liners are fully compatible with Metso^® VTM series and similar vertical stirred mill designs.

Complete Mill Liner Solutions

1. AG, SAG & Ball Mill Liners (Made to Drawing)

We produce a full suite of wear components for horizontal rotating mills, customized to your specific mill dimensions, operating conditions, and process objectives.

• Shell Liners & Lifter Bars: The core wear components that lift and cascade the grinding charge. Available in various profiles (high/low, equal height) and material grades.

• End Liners (Feed & Discharge): Protect the mill heads from wear. Designs are balanced with shell liners to minimize maintenance downtime.

• Discharge Systems: Including grate panels, pulp lifters, and discharge cones, critical for controlling product retention time and discharge flow.

• Trunnion Liners: Protect the mill's bearing surfaces at the feed and discharge points.

2. Vertical Mill Liners (Compatible with Metso VTM Series)

Specifically engineered and manufactured for the unique wear environment of vertical stirred mills.

• Screw/Impeller Liners: The key rotating components that impart energy to the grinding media and slurry.

• Tank/Body Liners: Protect the stationary mill chamber from abrasion.

• Other Internal Wear Parts: Including various deflectors and flow control components.

Our Engineering Excellence & Technical Support

Heavy Casting Ensures Integral Large Components: Our capability for a single pour of 85 tons of molten steel guarantees that key large mill liners (such as heavy end liners, large lifter bars) can be cast integrally. This results in dense, uniform internal structure, fundamentally eliminating the risk of premature failure caused by welding or splicing, laying the foundation for ultra-long service life.

Precision Machining Ensures Perfect Fit & Installation Efficiency: Our dedicated liner machining equipment, including double-column CNC vertical lathes, achieves micron-level machining precision. This not only ensures the flatness of mounting surfaces and precise alignment of bolt holes for true "drop-in" installation but also optimizes the fit between liners, reducing ineffective wear and vibration for smoother overall operation.

Material Science & Design Optimization: We provide application-based customized material solutions:

• High-Chrome Alloy Iron & Steel: For superior abrasion resistance in high-wear areas.

• Manganese Steel: For high-impact applications.

• Specialty Alloys: For extreme conditions involving corrosion, heat, etc.

Our design incorporates a deep understanding of grinding media motion, power draw, and discharge efficiency, aiming to optimize your overall grinding circuit performance.

Full Lifecycle Support:

• Installation Guidance: Provide technical support for liner handling, installation sequence, bolt torque, etc.

• Wear Monitoring & Change-Out Planning: Assist in developing scientific liner change-out plans based on wear rate measurements, coordinating with plant maintenance schedules to avoid unplanned downtime.

• Performance Analysis: Provide insights into mill operating conditions and optimization suggestions by analyzing liner wear patterns.

Key Benefits for Your Grinding Operation

Maximize Equipment Availability & Throughput: Reduce installation and commissioning time with precise dimensions and optimized design. Maintain efficient grinding charge motion and power draw to support design capacity.

Lower Total Grinding Cost: Achieve the optimal balance between liner life, grinding efficiency, and media consumption. Longer service life and faster change-outs directly translate to lower cost per ton.

Enhance Safety & Installation Convenience: Our designs aim to reduce the number of pieces for large mill liners and simplify fastening systems. Consideration for compatibility with large liner handling tools improves installation safety.

Protect Core Assets: High-precision, high-quality liners effectively protect the mill shell and heads, extending the service life of your major capital equipment.

Single-Source Reliable Supply: Source all your critical wear components — from shell lifters to discharge grates to vertical mill screw liners — from one trustworthy supplier with strong manufacturing and technical capabilities.

How to Order Correctly

To ensure you receive the optimal, precisely compatible liners, please provide the following information:

1. Mill Manufacturer, Model & Size: (e.g., Φ10.4m×6.1m SAG Mill from FLSmidth^®, or vertical mill Metso^® VTM-1500-WB).

2. Mill Serial Number & Drawing Numbers: (Key information for confirming original design specifications).

3. OEM Part Number & Description: From your existing liner drawing or parts list (e.g., Shell Lifter Bar, Drawing #XXXX).

4. Material Specification: Desired or previously used material grade (e.g., High Chrome 26%, ZGMn13-4).

5. Current Wear Issues or Performance Goals: (e.g., aiming to extend life in impact zone, reduce change-out time).

6. Required Quantity & Delivery Schedule.

Contact Us for a Quote or Technical Consultation
Request a detailed quotation, submit your drawings for review for AG/SAG/Ball mill liners, or submit the OEM Part Numbers for standard mill liners (e.g. mill liner for VTM vertical mills), or discuss specific grinding performance challenges. Our engineering team is ready to provide you with professional mill liner solutions.

Disclaimer: Metso® and VTM^® are trademarks of Metso, and FLSmidth^® is trademark of FLSmidth. The high-quality mill liners described on this page are manufactured per customer-provided drawings or to match the design specifications of the referenced OEM equipment. They are not manufactured, approved, or warranted by the original equipment manufacturer.