Overcoming extreme operating conditions to keep mining equipment running
Abrasive slurries, variable ore consistencies, remote locations, severe dust and vibration – these mining operations place extraordinary demands on rotating equipment.
Extreme conditions and continuous operation contribute to accelerated wear and unpredictable failure modes, making sealing systems a crucial selection factor to ensure equipment uptime and protect asset integrity.
Yet some mines operate with a mix of legacy and site-specific mechanical seals that were never designed for the harshest environments. This leads to more frequent seal failures, a reduced working life and a higher maintenance burden across each site. If that is the problem, what’s the solution?
Standardising on rugged, mining-ready seal technologies ensures equipment can withstand the toughest conditions while reducing unplanned downtime and improving overall reliability.
John Crane has a deep understanding of how product selection is essential to maximising equipment performance and our portfolio includes solutions dedicated to mining and minerals industry applications.
John Crane also offers on-and off-site engineering support from the Reliability Engineering for Maintenance component of the John Crane Performance Plus™ modular service framework, which underpins a complete solutions package for the mining industry.
What are the strategic benefits of selecting John Crane as the solution provider for your mining and minerals operation?
Technology innovation to support mining
The John Crane portfolio of sealing solutions for the mining and minerals industry includes newer solutions that add innovation to the product mix. They include:
- Upstream Pumping (USP) technology: John Crane’s unique, engineered, non-contacting USP seal face technology delivers a breakthrough in liquid sealing technology. This can help increase the typical mean time between repair (MTBR) from three years for traditional seals to more than five years for USP, while reducing water usage and eliminating the need for high-pressure flush systems.
- John Crane Diamond®: This technology uses ultrananocrystalline diamond to enhance seal face durability – key to maintaining durability in mining operations. It is available on sintered silicon carbide and tungsten carbide substrates to improve performance in a wide range of mining applications.
Mining-specific sealing solutions
Not every mechanical seal can withstand the rigours of the mining process.
- The robust Type 5840 single-cartridge seal is ideal for general-purpose slurry applications and the Type 5860 operates without a flush, offering a good solution to the challenge of working with abrasive applications. Similarly, the Type 1 elastomer bellows shaft seal is regarded as a workhorse. Using a proven technology will support extended uptime.
- The new Type SB2 USP and Type SB2A USP seals were designed with pumps and other rotary equipment in pulp mills, minerals processing and other slurry duties in mind. They manage up to 40% solids by weight and a solids hardness of 8 Mohs, and mining operators deploying these seals sitewide can expect multiple strategic benefits.
- Operational efficiency: Deploying the same technology across every site simplifies maintenance, which means fewer breakdowns.
- Environmental compliance: The Type 5840 slurry seal operates with or without water quench and without flush.
- Cost savings: A reduced inventory makes parts availability easier, and it is more cost-effective in terms of training, maintenance and repair costs.
- Scalability: Replicating these ‘best practice’ savings across sites is straightforward with a uniform technology profile, and extrapolating ‘per site’ savings across all sites is a favourable strategic benefit.
Support systems
The nature of processing mining materials means that seals benefit from correct installation, maintenance and repair.
- John Crane Performance Plus™ is the modular service framework that powers your people, plant and performance. The Asset Condition Management and Reliability Engineering for Maintenance programmes are supported by the world’s largest mechanical seal service network.
Remote monitoring
Mining is a multi-site operation, and in-person seal inspection may not be possible due to hostile environments.
- John Crane Sense® Monitor wireless condition monitoring provides near real-time visibility into the health of rotating equipment. By detecting early signs of imbalance, misalignment, cavitation, bearing wear and process instability, it supports predictive maintenance, reduces unplanned downtime and protects critical mining assets.
Building a unified sealing strategy
Extreme environments demand equally robust sealing solutions. By deploying heavy-duty slurry seals, advanced seal-face technologies and integrated condition monitoring across all sites, mining operators can strengthen equipment resilience and reduce the operational impact of harsh conditions.
A unified sealing strategy that includes the proper seal, support system and online monitoring not only protects equipment in aggressive slurry applications – it builds a reliability foundation that enables safer, more stable and more predictable mining operations.
Choosing the right seal for the application, even in extreme operating conditions, can help mining and minerals companies achieve operational excellence, reduce costs, improve efficiency and get closer to meeting their sustainability goals.
John Crane has a strong portfolio of slurry seals, supported by the John Crane Performance Plus™ modular service framework, and can create a tailored package of solutions and support for mining and minerals operators.
Further actions for mining operators: