View all newsletters
Receive our newsletter - data, insights and analysis delivered to you
In association with Chesterton
  1. Sponsored
June 13, 2022updated 30 Jun 2022 11:17am

How the right sealing solution can increase slurry pump reliability

By paying close attention to the sealing solution used in the gland area of slurry pumps, mining operators can increase productivity – and profitability

Slurry pumps are the workhorses of mining operations, helping to efficiently transport ore in the form of slurry throughout the site. Unfortunately, they are also often one of the more trouble-prone parts of many plants, with the abrasive nature of mining slurries taking a high toll on pump components.

Free Whitepaper
img

How to choose the best pump seals and packing for mining slurry operations

The slurry pump plays a crucial role in almost all mining operations, transporting ore throughout the plant. However, they can also be one of the most trouble-prone elements of the operation. Problems with slurry pumps can impact the productivity and profitability of the mine. Mining operators should pay close attention to the seals and packing they use. This whitepaper discusses the main challenges operators face and provides a guide on how to choose the best pump seal for your operation.
by Chesterton
Enter your details here to receive your free Whitepaper.

A particular stress point is the gland area, where mechanical seals or packing are used to prevent leakage. Sealing solutions that are of poor quality or that are ill-suited to the application at hand can greatly increase maintenance demands, and lead to unplanned stoppages and excessive water use.

Mining operators looking to increase the efficiency of their slurry pumps – and in turn the whole operation – should spend time analysing their slurry and choose a tailored sealing solution that can cope with the inherent stresses.

Some of the factors to consider when analysing the slurry include the hardness and abrasiveness of the slurry; the amount and weight of solids being carried; and the salinity, chemical composition and temperature of the slurry. These can all impact heavily on component wear.

Armed with this information, operators can make a more informed choice about what kind of features are required from a sealing solution, be it a mechanical seal or packing. While uptake of mechanical seals is varied across mining settings, they have the potential to extend time between maintenance intervals by up to four times compared to packing. However, a slightly higher level of training is required among maintenance staff.

How to choose the right seal and packing

So, what factors should be considered when choosing a mechanical seal?

A good seal should have a stationary sprung design with non-clogging springs and micro-polished dynamic O-ring surfaces. It should also have the flexibility to add erosion protection features, like polyurethane in applications where the slurry is extremely abrasive.

Additionally, a good mechanical seal should also be flexible enough to add support features to prolong operating life, such as quench/drain and flush. It should have line-to-line seal faces and be designed with generous cross-sections and a robust drive mechanism that can mount on hardened pump sleeves.

For packing, the yarn needs to be sufficiently strong to prevent the slurry from penetrating into the fibre. It should be woven in a manner that creates a torturous leak path.

The packing needs to be low friction for low energy consumption and to reduce any damage to the rotating shaft, despite the presence of slurry. It should also be flexible enough to transfer the axial energy into radial load and maintain a positive seal for prolonged periods. Thereby reducing the number of follower adjustments required during the life of the packing.

In conclusion, slurry pumps play a crucial role in mining operations. By examining operating conditions and requirements and choosing an appropriate sealing solution, pump uptime can be increased, water consumption reduced, and high productivity maintained.

Want to know more?

Download the whitepaper below to find out how to choose the best Chesterton pump sealing solution for mining slurry operations.

Free Whitepaper
img

How to choose the best pump seals and packing for mining slurry operations

The slurry pump plays a crucial role in almost all mining operations, transporting ore throughout the plant. However, they can also be one of the most trouble-prone elements of the operation. Problems with slurry pumps can impact the productivity and profitability of the mine. Mining operators should pay close attention to the seals and packing they use. This whitepaper discusses the main challenges operators face and provides a guide on how to choose the best pump seal for your operation.
by Chesterton
Enter your details here to receive your free Whitepaper.

Topics in this article:
NEWSLETTER Sign up Tick the boxes of the newsletters you would like to receive. The top stories of the day delivered to you every weekday. A weekly roundup of the latest news and analysis, sent every Friday. The mining industry's most comprehensive news and information delivered every month. The mining industry's most comprehensive news and information delivered every month.
I consent to GlobalData UK Limited collecting my details provided via this form in accordance with the Privacy Policy
SUBSCRIBED

THANK YOU

Thank you for subscribing to Mining Technology