HPGR FEED CHUTE / HOPPER LINER

HPGR Feed Chute Liner

Wear protection for impact, sliding and roll-gap throat zones · Identify by location and plate number

Feed chute liners protect the hopper, chute and throat above the roll gap and influence uniform feed distribution. ANRANST checks the installation zone, plate number, orientation, profile, hole pattern, material, wear history and drawing number for each liner, accounting for the different duties within a chute.

Equipment HPGR units fed through a chute or hopper

Installation Position Hopper, feed chute and throat above the roll gap

Operating Conditions Drop impact, sliding abrasion, compression and material buildup

Identification requirements Zone, plate number, orientation, profile, hole pattern and drawing number

Category image for identifying feed liners. Confirm the location, orientation, plate number, profile, hole pattern and thickness against assembly drawings, liner layouts or an approved sample.

System function

Protect the feed structure and maintain stable feed to the roll gap

Loads vary by location: the feed landing zone sees impact and high-energy abrasion, inclined surfaces mainly experience sliding abrasion, and the throat above the roll gap may also experience compression, rebound and local blockages.

A liner set may combine different materials, thicknesses and fastening arrangements. Record service life by position number and select materials for each zone's duty.

Zone identification Feed impact zone, flow-guiding sliding zone, sidewalls and throat

Plate identification Plate number, left/right orientation, upper/lower position and layout sequence

Geometry identification Profile, thickness, hole pattern, recessed holes, joints and mounting datums

System identification Backing plate, fasteners, clamping plates, shims and adjacent liners

Position and Performance

Divide the liner system into duty zones along the material flow

Select materials and manufacturing methods for the installation position; hardness alone is insufficient.

Feed impact zone

Subject to impact from falling large ore lumps. Prioritise toughness, support, effective thickness and fastening reliability.

Inclined sliding zone

Predominantly subject to continuous sliding abrasion. Check working-surface wear resistance, flow angle and erosion at joints.

Sidewall containment zone

Uneven feed and lateral friction can produce different wear on each side. Record both sides separately and check feed alignment.

Roll-gap throat zone

Close to the high-pressure material-bed inlet, this zone may experience compression, rebound and blockages. Verify clearances to the roll surfaces and cheek plates.

Fasteners and joints

Hole areas, recesses, bolt protection and joint orientation influence early loosening, local erosion and exposure of the supporting structure.

Modular replacement

Replacing high-wear zones separately can limit shutdown work, provided plate numbers, orientation and assembly sequence are controlled.

Materials and Manufacturing Processes

Use different material selection criteria for impact and sliding zones

Confirm grade, hardness, thickness and service-life targets against drawings, used parts and operating evidence.

Quenched and Tempered Wear Plate Balances plate shape, toughness, machinability and wear resistance for chute liner applications. Control cutting, drilling, welding heat effects and mounting flatness.

Bimetallic liners Evaluate for well-supported zones with severe sliding abrasion. Inspect the wear layer, backing plate, edges, hole areas and fastening method.

High-chromium cast iron wear parts Evaluate only where impact levels, support and fastening conditions are suitable. Avoid unsupported high-impact applications for hard cast liners.

Rubber and polyurethane systems Evaluate for cushioning, noise reduction or suitable wet-material duties. Check temperature, particle size, cutting wear and attachment design.

Selection sequence: particle size and drop height → impact, sliding and compression by location → failure mode → material and structure → layout and fastening → drawings and acceptance → service-life records.

Failure Diagnosis

Use wear locations to distinguish material, feed and assembly problems

A record stating only “liner wear” provides too little information to guide the next material selection.

Observed condition	Priority checks	Improvement Options
Cratering or fracture at the feed landing point	Drop height, maximum particle size, foreign objects, support, material toughness and effective thickness	Adjust the landing point and cushioning, and improve the impact-zone structure
Rapid thinning on inclined surfaces	Flow velocity, abrasiveness, angle, surface material and joint orientation	Select materials for sliding duty and optimise the liner layout
One-sided uneven wear	Feed misalignment, hopper buildup, flow guides, left/right plate numbers and installation condition	Restore uniform feeding before comparing material service life
Cracking around holes or bolt pull-through	Hole recesses, edge distances, preload, support beneath the plate, impact and material toughness	Improve hole-area design and fastening procedures
Loose or warped liners, or erosion at joints	Plate shape, mounting surface, heat effects, tightening sequence, joints and buildup	Restore mounting datums and control plate shape and joints

Drawing References and Inquiry Details

Identify liners using assembly positions, layout drawings and individual dimensions

Record confirmed OEM drawing numbers, third-party drawing numbers and customer part numbers together. Manufacture to the controlled drawing revision.

Equipment and feed system

OEM, full model, serial number, hopper/chute structure, modifications and feed arrangement.

Location and plate number

Assembly drawing position, left/right and upper/lower orientation, plate number, quantity, liner layout and adjacent parts.

Profile and hole pattern

Length, width, thickness, curved and inclined surfaces, hole diameters and spacing, recesses, joints and mounting datums.

Drawing numbers and materials

OEM drawing number, third-party drawing number, customer part number, revision, material layers, hardness and manufacturing process.

Fasteners and associated parts

Bolts, nuts, washers, clamping plates, shims, plug welds or other attachment methods, and locking requirements.

Operating conditions and service life

Particle size, drop height, ore, moisture, throughput, service life by position, wear measurements and failure photographs.

Related Equipment and Parts

Connect feed liners with HPGR equipment, OEM installations and material selection

Use this page to identify general structures, materials and failure modes. OEM equipment pages help establish the series, model and installation position.

General High Pressure Grinding Rolls Information Review the relationship between the feed system, fixed roll, floating roll and roll-gap inlet. HPGR Side Liners and Cheek Plates Check lateral material-bed containment parts near the feed throat. Metso HRC / HRCe Check HRC / HRCe models and the installed feed-zone arrangement. FLS HPGR Identify feed liner drawing numbers through the FLS equipment series. thyssenkrupp Polysius HPGR Check chute structures and plate numbers through the relevant brand's equipment series. Quenched and Tempered Wear Plate Review material selection, machining and inspection requirements for plate liners.

ANRANST is an independent aftermarket industrial spare parts service platform. OEM names and trademarks belong to their respective owners. Confirm the full model, serial number, drawing number, drawings, dimensions and actual operating conditions before manufacture.