Start with the MQ nominal diameter and wet grate-discharge arrangement, then identify shell and end liners, grates, pulp lifters, trunnion parts, bearing bushes, gear-drive parts, materials and inquiry requirements.
This page follows CITIC HIC's published MQ nominal-diameter series. Grates and pulp lifters for the wet discharge system are shown separately and are not mixed with overflow-discharge parts.
The model suffix identifies the nominal shell diameter. Shell length, grates, lifters, supports, drive and liner arrangement vary by project.
| Model Series | Nominal Shell Diameter | Shell Length / Discharge | Required Checks Before Manufacturing |
|---|---|---|---|
| MQ-15 | 1,500 mm | Wet grate discharge; length confirmed by project | Nameplate, general arrangement, grates, lifters, supports and drive |
| MQ-21 | 2,100 mm | Wet grate discharge; length confirmed by project | Nameplate, general arrangement, grates, lifters, supports and drive |
| MQ-24 | 2,400 mm | Wet grate discharge; length confirmed by project | Nameplate, general arrangement, grates, lifters, supports and drive |
| MQ-32 | 3,200 mm | Wet grate discharge; length confirmed by project | Nameplate, general arrangement, grates, lifters, supports and drive |
| MQ-36 | 3,600 mm | Wet grate discharge; length confirmed by project | Nameplate, general arrangement, grates, lifters, supports and drive |
| MQ-40 | 4,000 mm | Wet grate discharge; length confirmed by project | Nameplate, general arrangement, grates, lifters, supports and drive |
| MQ-45 | 4,500 mm | Wet grate discharge; length confirmed by project | Nameplate, general arrangement, grates, lifters, supports and drive |
| MQ-55 | 5,500 mm | Wet grate discharge; length confirmed by project | Nameplate, general arrangement, grates, lifters, supports and drive |
The numbers on the diagram correspond one to one with the rows below.
| No. | Component | Location | Applies to |
|---|---|---|---|
| 1 | Mill shell | Bolted blue mill shell in the foreground | Shuikoushan Kangjiawan project 3660 grate-discharge ball mill; MQ prefix not specified in published report |
| 2 | Girth-gear guard | Yellow circular guard at the left end of the foreground mill | Shuikoushan Kangjiawan project 3660 grate-discharge ball mill; MQ prefix not specified in published report |
| 3 | Auxiliary drive assembly | Blue auxiliary drive assembly below the foreground mill | Shuikoushan Kangjiawan project 3660 grate-discharge ball mill; MQ prefix not specified in published report |
The system covers shell liners, lifters, end liners, grates, pulp lifters, trunnion liners and grinding balls. Each position has distinct impact, wear and material-process requirements.
Shell Liner / Shell Plate
Protects the shell interior and works with lifters to control the movement of grinding balls and material. Confirm the arrangement, curvature, thickness, hole spacing, shell diameter, rotation direction and adjacent liners.
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Lifter Bar / Lifter Plate
Lifts grinding balls and material and controls their trajectory. Confirm lifter height, profile, pitch, arrangement, hole pattern, shell diameter and rotation direction.
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End Liner / Head Liner
Protects the feed-end or discharge-end head. Confirm the end, inner or outer ring, segmentation, curvature, hole pattern, rotation direction and interfaces with the throat or discharge structure.
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Feed Chute Liner
Protects the feed chute and material-impact zone. Confirm flow direction, segmentation, thickness, curved surfaces, hole pattern, drop height and feeder interface.
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Discharge Grate / Grate Plate
Controls the passage of correctly sized material while protecting the discharge end. Confirm aperture shape, open area, segmentation, curvature, hole pattern, rotation direction and plugging or wear records.
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Pulp Lifter / Discharge Lifter
Directs material passing through the grate to the discharge opening. Confirm vane direction, channel cross-section, inner or outer ring position, rotation direction, hole pattern and plugging records.
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Mill Trunnion Liner
Protects the inner surface of the feed or discharge trunnion. Confirm the end, inside and outside diameters, length, taper, flange, hole pattern, rotation direction and adjacent structure.
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Grinding Balls / Steel Balls
Grinding media subjected to repeated impact and wear. Confirm diameter distribution, ball consumption, mill size, speed, ore hardness, corrosion and breakage rate.
View Part Details →Check support and drive parts separately against the complete model, shell dimensions, journal, fits, gear parameters, material, heat treatment, lubrication and inspection requirements.
Trunnion Bearing / Bushing
Supports the mill trunnion and carries radial loads. Confirm journal diameter, bush inside and outside diameters, width, oil grooves, contact pattern, clearance, bearing housing and lubrication.
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Girth Gear / Ring Gear
Meshes with the pinion to transmit the main drive. Confirm module, tooth count, pressure angle, helix angle, split joint, center distance, backlash and contact pattern.
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Pinion
Meshes with the girth gear to transmit motor and gearbox output. Check module, tooth count, pressure angle, helix direction, shaft interfaces, backlash and contact pattern.
View Part Details →No. The grates, pulp lifters and end structures differ. First confirm the complete model, discharge type, shell dimensions, arrangement, drawing and drawing revision.
No. Mills in the same nominal-diameter series may have different lengths, apertures, segments, rotation directions, lifters, supports and drives. Check the project drawings.
Submit the nameplate, shell diameter × length, general arrangement, photographs of the grates and lifters, liner arrangement and key dimensions to assess identification, reverse engineering and manufacturing requirements.
Provide the complete model, shell diameter × length, serial number, liner layout, drawings, used part photographs, materials and duty. We coordinate identification, material assessment, manufacturing selection, quality control and finished part delivery.
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ANRANST provides customers worldwide with engineering assessment, production at certified foundries to the customer technical requirements, quality control and finished-part delivery for custom wear parts and industrial spares, with scope to support other custom industrial parts.
We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.
Material grades and heat-treatment processes are specified order by order, stated in the technical agreement and tracked through production.
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