Ball Mill Scoop Liner High Manganese Steel Scoop Piece for Grate Discharge Ball Mill

Product Introduction

Ball mill scoop liner (also known as discharge scoop or mill scoop) is a core wear-resistant component installed in the discharge trunnion of grate discharge ball mills, working together with grate liners. As the mill rotates, the scoop lifts qualified slurry or powder that has passed through the grate and discharges it through the central outlet, realizing forced material conveying.

The scoop liner is subject to long-term slurry erosion, particle abrasion and impact, requiring high wear resistance and impact toughness. Available materials: High manganese steel ZGMn13, ZGMn13Cr2, ZGMn18Cr2 and alloy cast steel. Custom fabrication is available according to customer drawings, including overall shape, scoop volume and bolt hole layout.

Key Advantages

• ✅ Scoop-shaped design ensures smooth material lifting and high discharge efficiency
• ✅ High manganese steel gains hardness under impact, resisting long-term slurry erosion and heavy impact
• ✅ Lifting holes on top for easy installation and removal
• ✅ Perfectly matches with grate liners and end liners, minimal assembly clearance
• ✅ OEM & ODM service, compatible with various sizes of grate ball mills, widely used in South American mine projects

Applicable Equipment: Grate Discharge Ball Mill

Detailed Application Scenarios

1. Metal Mining & Mineral Processing (Core Market) For primary coarse grinding circuits of copper, iron, gold, molybdenum and lead-zinc concentrators. The scoop liner works with the grate plate to force-discharge qualified slurry, significantly increasing mill throughput. Widely used in large mining projects in Chile and Peru.
2. Aggregate & Quarrying Pre-grinding of hard rock such as granite, basalt and limestone. The forced discharge structure prevents blockage and ensures continuous high-capacity production.
3. Cement & Building Materials For cement raw mills, clinker mills and slag grinding lines. Designed for 24-hour continuous operation, resisting persistent powder abrasion and reducing downtime.
4. Metallurgical Solid Waste Treatment Regrinding of steel slag, iron slag and mine tailings. The wear-resistant scoop liner withstands strong particle abrasion for waste resource recovery.
5. Non-metallic Minerals & Chemical Industry Grinding of quartz sand, feldspar, phosphate ore and kaolin. Forced discharge controls material residence time and avoids over-grinding.

Summary of Working Conditions

• Spare part replacement for discharge end of grate ball mills
• High-throughput primary coarse grinding requiring forced discharge
• Wet slurry grinding and dry powder grinding
• 24/7 continuous high-load operation
• Matching purchase with grate liners and end liners

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.

Certificates & Test Documents

1. Material Chemical Analysis Certificate
2. Mechanical Property Test Report (Hardness, Impact Toughness, Tensile Strength)
3. MT & UT NDT Certificate
4. Dimension & Weight Inspection Report
5. Mill Test Certificate (MTC), stamped by factory QC department
6. ISO9001 Quality Management System Certificate

Third-party inspection by SGS / BV is available upon buyer's request, extra fees apply.

Price & Quotation

Ball mill scoop liner is custom casting. Final price depends on material grade, drawing dimension, total order weight, NDT requirements and trade terms.

• Unit of Price: USD per Metric Ton
• Trade Term: FOB Qingdao / CFR / CIF
• MOQ: 1 Metric Ton
• Lead Time: 25–45 working days after deposit and drawing confirmation
• Factors affecting quotation:
  • Material grade (Mn13 / Mn13Cr2 / Mn18Cr2 / alloy cast steel)
  • Scoop structure complexity, bolt hole layout and casting difficulty
  • Total order weight, better unit price for bulk purchase
  • Extra inspection: MT, UT, SGS/BV third-party inspection
  • Packing option: steel frame or wooden case

Please send your drawing, ball mill model and purchasing weight for formal quotation with complete MTC inspection documents.

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

Inquiry Tip: Send scoop liner drawing, grate ball mill model and purchase tonnage to get FOB Qingdao quotation together with full inspection certificates.