Mill Lifter Bar High Manganese Steel Lifting Bar for Ball Mill SAG Mill

Product Introduction

Mill lifter bar (lifting bar) is the key lifting wear spare part installed on the inner shell of ball mill, SAG mill and AG mill. Its raised profile lifts grinding media and ore to a higher position, controlling the tumbling & cascading movement of charge, greatly improving impact crushing and grinding efficiency. Meanwhile, it protects the mill shell from heavy impact and abrasive wear.

We cast lifter bars with high manganese steel ZGMn13, ZGMn13Cr2, ZGMn18Cr2, alloy cast steel and high chrome cast iron. Custom manufacturing per customer drawings, including overall length, cross-section profile, bolt hole layout, hole diameter and single piece weight. It is widely used in copper mine, iron mine and mineral processing plants, compatible with ball mill, SAG mill, AG mill.

Key Advantages

• Optimized lifting profile to lift steel balls and ore, boost grinding throughput 
• High manganese steel has impact hardening property, excellent toughness for heavy impact coarse grinding
• Custom dimensions and bolt hole positions for perfect installation matching 
• Stable casting quality, long service life, reduce mill downtime & replacement cost
• OEM & ODM service for various grinding mill projects

Application

Our wave cylinder liners and mill lifter bars are custom engineered for heavy-duty, high-impact, high-abrasion working conditions, widely used in mining, mineral processing, quarrying, cement, metallurgy and power industries.

1. Mining & Mineral Processing (Core Application)

Suitable for copper, iron, gold, molybdenum, lead-zinc and manganese ore concentrators. Perfect for primary coarse grinding and secondary fine grinding circuits. The wave liner and lifter bar combination effectively lifts grinding media, strengthens ore impact crushing, improves grinding fineness and mineral recovery rate. Fit for overflow ball mills, grate ball mills, SAG mills and AG mills.

2. Aggregate & Quarry Industry

Applied in hard rock crushing and grinding lines for granite, basalt, limestone and river stone. Excellent resistance against heavy impact and sharp particle abrasion, ensuring stable operation of stone production lines.

3. Cement & Building Material Industry

Widely used in cement raw material mills, clinker mills and slag grinding systems. Adapt to 24-hour continuous high-load operation, anti-abrasion and deformation-resistant, reducing frequent downtime and replacement costs.

4. Metallurgy & Slag Processing

Ideal for steel slag, iron slag and tailings regrinding. Our cast liners withstand extremely abrasive slag particles and repeated heavy impacts in metallurgical waste treatment lines.

5. Power & Non-Metallic Minerals

Suitable for coal powder preparation, quartz sand, kaolin, gypsum and feldspar grinding. Stable structure, uniform wear and low noise for fine and continuous grinding conditions.

Working Condition Advantages

• Heavy impact coarse grinding for large ore particles
• High abrasion fine grinding for hard rock materials
• 24-hour continuous industrial production
• Wet grinding and dry grinding environments
• High-load operation of large SAG & ball mills

Inspection Procedure

1. Raw Material Inspection Check chemical composition of molten steel by spectrometer. Verify alloy elements content to meet casting standard. Reject unqualified raw material before pouring.
2. Casting Visual Inspection Visual check for surface defects: sand hole, shrinkage, crack, slag inclusion. Clean casting riser and burrs. Mark defective pieces for rework or scrap.
3. Heat Treatment Inspection Monitor heat treatment temperature & holding time. Random sampling for hardness test (Brinell / HRC) to guarantee mechanical performance.
   
4. Dimension & Weight Inspection Measure overall size, thickness, bolt hole position and diameter. Compare with customer drawing. Check single piece weight, record deviation.
   
5. Non-Destructive Testing (NDT)

• MT Magnetic Particle Testing: Detect surface & near-surface cracks
  
• UT Ultrasonic Testing: Check internal shrinkage, porosity and inclusions NDT reports can be issued upon client request.
  

6.Final Sampling Inspection Random recheck of appearance, dimension and hardness. Compile full inspection documents including chemical report, hardness record and NDT certificate.

7.Packing Inspection Check seaworthy packing, mark part number, quantity and shipping mark before loading.

Price & Quotation

Mill lifter bars are custom cast products. Final price depends on material grade, drawing size, total weight, order quantity, NDT inspection requirements and trade terms.

• Price Unit: USD per Metric Ton
• Trade Term: FOB  / CFR / CIF
• MOQ: 1 Metric Ton
• Lead Time: 25–45 working days after deposit and drawing confirmation
• Price Influencing Factors:
  • Material grade (Mn13 / Mn13Cr2 / Mn18Cr2 / high chrome / alloy steel)
  • Profile structure, length, bolt hole layout & casting complexity
  • Total order weight, bulk order gets better unit price
  • Extra inspection: MT, UT, SGS/BV third-party inspection
  • Packing: steel frame or wooden case

Please send your drawing, mill model and target quantity for formal quotation together with complete MTC documents.

Quotation valid for 30 days; raw material price fluctuation will affect final price.

Inquiry Prompt: Send lifter bar drawing, mill type and purchase weight, get FOB Qingdao quotation and full inspection certificates.