Got hard rock?

KSB offers comprehensive services to help relieve the pressure and reduce the life cycle cost of your most challenging pump problems.

Especially suited for hard rock applications, the GIW^® MDX has helped customers around the world overcome the challenges of extracting metal and mineral deposits. The MDX pump’s advanced hydraulic technology provides a predictable wear life, which translates into a lower total cost of ownership (TCO).

Understanding the nature of slurries and how they behave when being pumped has been fundamental to the development of the MDX. KSB GIW, Inc. has been obtaining slurry samples from customers over many years for testing hydraulics and materials. Research & Development facilities include multiple slurry test beds on the campus, together with a hydraulics laboratory that is dedicated to pump performance testing. These activities are central to the company’s pump development programs. 

KSB GIW’s massive investment in research, development, and manufacturing has advanced the design of all GIW^® slurry pump products, materials, and wear-resistant components. The MDX is no exception; notable product features include: 

• Superior material technology: proprietary white-iron alloys proven in the field to increase the life of wear parts. 
• Larger impeller diameter: lowers the pump’s operation and specific speed, which leads to longer part wear life. 
• Thicker cross-section: gives the MDX a long and reliable pump service life. 
• Deep base circle: minimizes aggressive particle impingement, which provides a sliding wear action and lowers abrasive wear. 
• Oversized shrouds: enhances vane performance and adds clearing action, minimizing recirculation and wear between the impeller and suction liner.
• Adjustable suction liner: helps operators match their operating cycle times with scheduled outages, maximizing their productivity and lowering costs.
• Slurry diverter: increases the suction liner life by reducing particle recirculation between the impeller and the suction liner.
• IoT Solutions: GIW^® RAMSL (Remotely Adjustable Suction Liner) and GIW^® SLYsight options can be supplied on many MDX sizes. Contact KSB GIW, Inc. for details.

The GIW^® MDX design allows for a wide discharge range between 100 and 860 mm, and boasts flow rates up to 18,500 m³/hr. It can reach up to 55 m of head and features a pressure rating up to 10.3 bar.

The MDX can tackle a variety of applications, but it is especially suitable for hard rock comminution. Hard rock mining requires the use of one or more grinding stages for reducing crushed run-of-mine ore down to a suitable particle size for liberating the product from gangue materials. The MDX has consistently met customer expectations within the following applications:

Semiautogenous (SAG) and ball mill circuits: In SAG operations, both balls and the ore itself assist in the grinding process. This mechanism is used in mining operations that require grinding to finer particle sizes, need high capacity, or need to grind multiple types of ore at once. The MDX can help operators tackle these applications by reducing their consumption of lining plates and grinding media.

Ball and rod mill discharge: Rod mills are best in wet applications, where the slurry has up to 50% solids by mass; however, they can be used in dry applications as well. The MDX pump’s hard metal construction resists damage in the event of rod tangling.

Cyclone and screen feed: In this application, cyclones separate heavy from light slurry components. There are a variety of design principles that go into cyclones to achieve various cuts of the media. Pressure drop across the cyclone is defined by a variety of parameters both intrinsic to the cyclone/separator and the pump feeding it. The MDX pump is designed to achieve the total head to the cyclone, plus the calculated or predicted pressure drop across the cyclone.

Since the day MDX launched, KSB GIW has continually enhanced its design so that our customers can keep their pumps operating at top efficiency. This has been accomplished by applying small but impactful design changes to specific areas within the pump known for aggressive and accelerated wear, while maintaining the proven hydraulics and wear technology inherent to the MDX. 

The GIW^® MDX pump is the gold standard for extra heavy mill duty operations. No other pump on the market can match its rugged design and reliable operation. For over a decade, the MDX has delivered on its promise to improve productivity and lower TCO.