Overview

The Orion series by Metso consists of heavy and mining duty horizontal slurry pumps designed for abrasive slurry applications. Available in rubber lined and metal variants, these pumps emphasize optimal power utilization, extended wear life, and reliable operation.

Specifications and Design Features

• Pump Types: Heavy duty (HM, HR) and mining duty (MR, MM) pumps with options for rubber lining or hard metal construction.
• Hydraulic Design: High-efficiency hydraulic profiles developed using fluid dynamic software and 3-D CAD to operate near the best efficiency point.
• Materials: Use of premium hard metals, corrosion-resistant alloys, and proprietary wear-resistant elastomers. Parts are interchangeable between metal and elastomer versions for customization.
• Wear Life Enhancements: Extra thick sections at wear points and optional double wear clearance adjustments to prolong component lifespan.
• Sealing and Bearings: Oversized alloy steel shafts supported by heavy-duty grease-lubricated bearings in sealed cartridge assemblies. Double seal arrangements protect bearings from contamination. Multiple gland seal options include expellers, flushed glands, and mechanical seals.
• Modular and Maintenance Features: Modular design with full parts interchangeability, back pull-out design for easy inspection and maintenance, and optional front pull-out for casing renewal.

Operational Benefits

• Reduced power consumption due to optimized hydraulic design.
• Extended service life from high-quality materials and wear management.
• Reliable operation with minimal downtime supported by robust shaft and seal designs.
• Ease of maintenance enabled by modular construction and pull-out designs.

Applications

Typical applications include mining and mineral processing, abrasive slurry handling, SAG and AG mill discharge recirculation, cyclone feed, mine refuse and tailings, industrial processing, coal and power plant ash, sand and gravel, pulp & paper, lime slurry, alumina, fertilizer, and acid neutralization.

Technical Features

• Impeller Wear Clearance Adjustment: Front and back clearance adjustments possible on installed pumps without disassembly, maintaining optimal performance.
• Bearing Types: Heavy-duty taper roller, spherical roller, and cylindrical roller bearings with grease lubrication.
• Seal Arrangements: Expeller-based centrifugal seal with abrasion-resistant materials and triple grease-lubricated packing rings for stationary sealing.
• Impeller Design: Radial or partial mixed flow vanes reduce hydraulic shock losses; large diameters enable high head and performance at slow speeds.
• Flanges: ANSI and metric flanges available; rubber lined pumps feature slotted flanges for compatibility.
• Wear Resistant Castings: Metallurgically controlled with extra metal in high wear areas.

Shaft Sealing Options

• Standard Expeller Shaft Seal: Hydrodynamic expeller dry seal for running operation, with secondary packed gland seal for stationary sealing.
• Mechanical Seals: Single or double slurry mechanical seals available for zero leakage and product dilution control.
• Stuffing Box Designs: Combined low flow/full flow stuffing box options to suit different suction conditions and product dilution needs.

Specialty Configurations

• HP (High Pressure): Heavier duty casing for higher pressure applications.
• HG (Heavy-duty Gravel): Same size suction and discharge flanges with fewer impeller vanes for larger material passage.
• HT (Heavy-duty Tunneling): Special 90° elbow cast into casing for tunneling applications.
• HH (High Head): Larger diameter impeller for increased head at given flange sizes.
• HMPT (High Pressure and Temperature): HM pump with metal liner inside cast steel casing for elevated pressure and temperature conditions.

Installation and Piping

Metso slurry hose system components enable flexible piping configurations including flange adapters, rubber lined steel reducers, rubber compensators for flexibility, branch pipe T90s for inlet water and drainage, and knife gate valves for shut-off. Motor arrangements include direct coupled, overhead mounted, and side mounted options.

Maintenance and Adjustment Procedures

• Back Pull-Out Design: Allows removal of bearing frame and rotating elements as a unit for rapid inspection and repair.
• Front Pull-Out Design: Enables casing renewal after pipe removal when back pull-out is inconvenient.
• Impeller Clearance Adjustment: Two-step patented procedure to adjust front and back impeller clearances on-site without disassembly, maintaining pump performance throughout wear life.

Dimensions and Weights

Detailed tables provide connection dimensions, general dimensions, and weights for HM, HR, MM, and MR series pumps. Sizes range from small (e.g., HM50 with 50 mm inlet) to large (e.g., MM600 with 600 mm inlet), with weights varying accordingly. Both single and double adjustment frame options are available.

Quality and Certification

All Metso pumps and parts are manufactured under total quality management systems and ISO-certified production units, ensuring high reliability and consistent quality.

Contact and Support

Metso offers global support with offices in Sweden, USA, South Africa, Australia, India, Peru, Chile, and Brazil. Additional information and product support are available via Metso's website and support teams.

Company Information

Company Name: Mércio Ltda.
Address: Av. Independência, 2500, Éden, 18087-101, Sorocaba-SP, Brazil
Contact: Phone: +55 15 2102 1709