A significant zinc mining operation in North Queensland operates the largest tailings re-treatment facility in Australia. Ranked among the top 15 global zinc producers, the site produced 118,108 metric tonnes of zinc in FY2022. However, the site faced challenges in maintaining optimal production efficiency due to frequent pipeline blockages, slurry density inconsistencies, and pump failures.
Efficient Dewatering in Underground Mining Using Goodwin Brazil’s Submersible Slurry Pumps
In the demanding environment of underground mining, the reliability of dewatering systems is critical. When sump flooding and frequent pump failures disrupt operations, the consequences can be both operationally and financially severe. One underground mining facility recently faced this exact challenge—but by deploying Goodwin Brazil’s high-performance submersible slurry pumps, including the NZE 100mm, 150mm, and 200mm models, they achieved dramatic improvements in efficiency, cost savings, and system uptime.
The strategic implementation of these pumps helped overcome long-standing issues with spillage sump cleaning and provided a blueprint for modernizing dewatering systems in complex mining environments.
The Problem: Frequent Flooding and Costly Downtime
Spillage sumps in underground mines are critical control points. If left unmanaged, they can flood, halting operations and damaging infrastructure. In this case, the mining facility relied on standard submersible pumps that were ill-equipped to handle the high specific gravity (SG) of the slurry being processed. These conditions led to frequent motor failures, primarily from overheating and clogging, as well as rapid wear from abrasive particles.
The consequences were severe:
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Frequent downtime due to sump overflow and pump repairs.
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Increased maintenance costs, including labor and parts.
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Safety risks associated with manual intervention in hazardous sump zones.
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Reduced plant efficiency, as every operational halt affected throughput.
The most critical sump, located beneath the main crusher, was particularly problematic. If it filled up, the plant had to stop entirely—an outcome the operations manager deemed unacceptable.
The Solution: Expert Diagnosis and Tailored Solutions
Having previously resolved similar issues at the largest copper concentrator in Brazil’s Pará region, the Goodwin Brazil team brought its expertise to this mining site. A detailed site evaluation quickly revealed that the existing pumps lacked the hydraulic performance and durability needed for the application.
The Goodwin team recommended deploying a mix of submersible slurry pumps from its NZE range, engineered specifically to handle aggressive slurry conditions. Their proposal was strategically tailored:
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NZE 100mm pumps (30kW): Ideal for smaller sumps and distributed pumping zones.
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NZE 150mm pumps (55kW): Suited for mid-size sump locations with moderate slurry flow.
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NZE 200mm pumps (112kW): Designed for large sump stations where high discharge volumes were required.
These pumps are built to handle high SG slurries, resist abrasion, and operate continuously without overheating—a major advantage over the previously installed models.
Pilot Deployment: Real-World Performance Validation
To mitigate risk and prove the concept, the mining company agreed to a pilot deployment consisting of:
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Two NZE 200mm pumps
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Eight NZE 100mm pumps
These units were rented for an eight-month evaluation period, operating under full load conditions in the most problematic sump areas.
The result: zero pump failures, continuous operation, and a dramatic drop in maintenance intervention. Where the previous system had required weekly attention, the Goodwin pumps ran for months with only routine inspections. The team on site reported not just increased reliability, but smoother operations across the board.
The Cost of a Shortcut: Lessons in Long-Term Value
Despite the success of the pilot, the mining company initially opted to purchase pumps from a different supplier, attracted by a lower upfront price. Within three months, however, the newly installed pumps began to fail—repeating the same issues the facility had just overcome.
The lesson was clear: cutting corners on equipment not designed for the specific demands of abrasive slurry applications led to higher long-term costs.
Following this setback, the mining team returned to Goodwin, this time committing to a full system upgrade with 14 permanent Goodwin submersible slurry pumps. Since the switch, the facility has reported:
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No further sump flooding incidents
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No unplanned downtime related to pumping systems
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Improved operational throughput and plant reliability
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Significant cost reductions in maintenance and manpower allocation
Technology That Makes the Difference
The Goodwin NZE submersible slurry pump range stands out due to its engineering precision and durability. Key features include:
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High-Specific-Gravity Handling: Designed to pump slurries with high SG and solid content without clogging or overheating.
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Submersible Motor Design: Allows continuous, reliable operation even in harsh conditions.
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Heavy-Duty Construction: Built with abrasion-resistant materials that withstand aggressive mining environments.
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Ease of Maintenance: Modular design ensures quicker servicing and longer intervals between maintenance.
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Energy Efficiency: Optimized impeller and hydraulic design provide excellent performance with lower power consumption.
These attributes make the NZE 100mm, 150mm, and 200mm pumps uniquely suited to underground mining applications where reliability, performance, and total cost of ownership are key considerations.
Operational Impact: A System That Works
By implementing the right equipment, the mining facility successfully eliminated the critical bottleneck in its dewatering system. This improvement extended beyond just equipment reliability—it enhanced overall mine productivity and created a safer, more stable working environment.
With the Goodwin submersible slurry pumps, the facility no longer needed to divert resources toward emergency pump repairs or sump clearing interventions. Instead, the operations team could focus on optimizing throughput and minimizing waste.
A Repeatable Success Story
This case mirrors the success seen at the Mine Concentrator in Pará, Brazil, where the deployment of Goodwin 100 and 200 ANZE pumps eliminated sump flooding, increased plant efficiency, and provided pump failure prevention. That copper processing plant, with a capacity of 36 million tonnes per year, had been plagued by motor burnouts and difficult pump maintenance. The application of the right pump technology brought stability and long-term performance.
Both cases highlight the strategic advantage of selecting pumps engineered specifically for high-demand, slurry-intensive applications.
Conclusion
In underground mining, effective dewatering isn’t just a technical detail—it’s a strategic priority. The experience of this mining facility shows that selecting the right pumping solution can transform operations. By deploying Goodwin Brazil’s NZE 100mm, 150mm, and 200mm submersible slurry pumps, the site resolved years of sump-related issues, improved safety, and achieved uninterrupted operational flow.
Goodwin’s commitment to engineering excellence, field-proven performance, and long-term reliability makes its pumps the ideal choice for mining companies seeking to reduce costs, prevent downtime, and ensure smooth operations under the most demanding conditions.
