Size a hydrocyclone classification system from slurry flow, particle distribution and the required overflow and underflow. Review cyclone geometry, operating pressure, manifold and pump interactions, then validate separation on representative solids rather than selecting a body diameter alone. Sample feed, overflow and underflow at stable agreed conditions and calculate the relevant size and solids balance. Record pressure, flow, concentration and installed outlets with the result. Include operating-range changes and monitor abnormal discharge, keeping conclusions tied to the tested slurry rather than a family capacity chart. Submit the intended configuration and any OEM/ODM changes for project-specific feasibility review.
Size a hydrocyclone classification system from slurry flow, particle distribution and the required overflow and underflow. Review cyclone geometry, operating pressure, manifold and pump interactions, then validate separation on representative solids rather than selecting a body diameter alone.

Shown as a configuration reference. Availability and the equipment offered for your project are confirmed separately.
Characterize slurry and solids
Provide particle-size distribution, solids concentration, particle densities, liquid properties and process temperature. Different minerals or aggregate slurries can behave differently at a similar nominal size. Representative sampling is essential because a cyclone separates according to the combined particle and fluid behavior, not a simple sieve opening.
Define overflow and underflow objectives
State desired cut behavior, fines recovery, underflow density and acceptable misplaced particles with the process engineer. Distinguish classification from bulk dewatering. A finer-looking overflow does not alone establish good recovery, so use a mass balance and agreed sampling methods for both discharge streams.
Match geometry and operating pressure
Review body size, inlet, vortex finder and apex with the expected flow and solids. Pressure must be measured at the defined point and maintained within the selected operating envelope. A cyclone's nominal diameter does not uniquely determine cut size across changing feed conditions.
Integrate feed pump and manifold
Provide pump duty, sump behavior and the number of cyclones operating together. Manifold distribution and pressure variation affect parallel performance. A cluster photograph does not establish that the feed distributor, launders, valves and standby capacity are all included in the quoted classification package.
Detect roping and unstable operation
Define inspection and monitoring of discharge behavior, pressure and process changes. Blocked or worn outlets and feed variations can change separation. Operators need a documented response to abnormal underflow rather than treating any continuous discharge as proof that the cyclone is classifying correctly.
Plan abrasion and safe liner changes
Specify abrasive and corrosive exposure and the proposed lining system. Obtain apex, vortex finder, liner and seal identification and safe lifting/access instructions. A general claim of wear resistance does not replace material-specific inspection and a way to change heavy wet components without uncontrolled slurry release.
Compare a complete hydrocyclone classification system scope
| Decision | Information to compare |
|---|---|
| Characterize slurry and solids | Particle distribution/density, slurry concentration, liquid properties and temperature |
| Define overflow and underflow objectives | Overflow/underflow targets, recovery, density and separation assessment |
| Match geometry and operating pressure | Flow range, inlet pressure, vortex finder, apex and selected geometry |
| Integrate feed pump and manifold | Pump/sump, active cyclone count, manifold, launders and standby arrangement |
| Detect roping and unstable operation | Discharge monitoring, blockage/roping response and pressure/process alarms |
| Plan abrasion and safe liner changes | Liner materials, wear outlets, part identification and maintenance isolation |
Plan installation and access
Support the cyclone or cluster for filled weight, piping loads and service operations according to the supplier's drawings. Coordinate feed, overflow and underflow elevations with the process layout. Provide representative sampling points, pressure measurement and safe isolation/drainage before opening any part of the slurry circuit.
Agree acceptance evidence before ordering
Sample feed, overflow and underflow at stable agreed conditions and calculate the relevant size and solids balance. Record pressure, flow, concentration and installed outlets with the result. Include operating-range changes and monitor abnormal discharge, keeping conclusions tied to the tested slurry rather than a family capacity chart.
Define OEM/ODM engineering boundaries
OEM manifolds, liners and plant interfaces can be reviewed for the slurry duty. ODM geometry, materials or pressure-boundary changes require process and mechanical validation. An official cyclone reference does not prove availability or transferable classification results for a customized system.
What should your hydrocyclone classification system RFQ include?
- Particle distribution/density, slurry concentration, liquid properties and temperature
- Overflow/underflow targets, recovery, density and separation assessment
- Flow range, inlet pressure, vortex finder, apex and selected geometry
- Pump/sump, active cyclone count, manifold, launders and standby arrangement
- Discharge monitoring, blockage/roping response and pressure/process alarms
- Liner materials, wear outlets, part identification and maintenance isolation
- Destination, working environment, access and delivery constraints
- Installation responsibility, utilities and connection drawings
- Acceptance samples, documented test method, operator training and maintenance scope
- OEM/ODM changes requested: identification, tooling, interfaces or new design; engineering feasibility to be confirmed
Need OEM / ODM customization?
Submit branding, packaging, configuration or engineering requirements for this equipment. Include the target market, initial and annual quantities, required changes and acceptance criteria.
Customization feasibility, permitted branding, development responsibilities, minimum quantity, cost and lead time are reviewed for the proposed supplier and configuration before a quotation is confirmed.
Frequently asked questions
How do I characterize slurry and solids?
Provide particle-size distribution, solids concentration, particle densities, liquid properties and process temperature. Different minerals or aggregate slurries can behave differently at a similar nominal size. Representative sampling is essential because a cyclone separates according to the combined particle and fluid behavior, not a simple sieve opening.
How do I define overflow and underflow objectives?
State desired cut behavior, fines recovery, underflow density and acceptable misplaced particles with the process engineer. Distinguish classification from bulk dewatering. A finer-looking overflow does not alone establish good recovery, so use a mass balance and agreed sampling methods for both discharge streams.
How do I match geometry and operating pressure?
Review body size, inlet, vortex finder and apex with the expected flow and solids. Pressure must be measured at the defined point and maintained within the selected operating envelope. A cyclone's nominal diameter does not uniquely determine cut size across changing feed conditions.
How do I integrate feed pump and manifold?
Provide pump duty, sump behavior and the number of cyclones operating together. Manifold distribution and pressure variation affect parallel performance. A cluster photograph does not establish that the feed distributor, launders, valves and standby capacity are all included in the quoted classification package.
How do I detect roping and unstable operation?
Define inspection and monitoring of discharge behavior, pressure and process changes. Blocked or worn outlets and feed variations can change separation. Operators need a documented response to abnormal underflow rather than treating any continuous discharge as proof that the cyclone is classifying correctly.
How do I plan abrasion and safe liner changes?
Specify abrasive and corrosive exposure and the proposed lining system. Obtain apex, vortex finder, liner and seal identification and safe lifting/access instructions. A general claim of wear resistance does not replace material-specific inspection and a way to change heavy wet components without uncontrolled slurry release.
Reference information
- Metso MHC Series official product reference
- Metso hydrocyclone classification system official family or technical reference
Reference data and images explain equipment configurations. IndustryApex engineers confirm the offered model, specification and commercial scope in your project quotation.