Breakthrough in Tin Processing Enhances Prospects for Stellar Resources at Heemskirk Project

3 min read | August 05, 2025 09:06 PM AEST | By Team Kalkine Media

Highlights

  • Large-scale ore sorting boosts feed grade efficiency
  • Waste removal supports lower operational costs
  • Exploration progress continues at multiple project sites

Stellar Resources (ASX:SRZ) is advancing its position in the tin sector with a breakthrough in large-scale ore sorting technology at its Heemskirk project in western Tasmania. While the company is not part of the ASX 100 stocks, its recent technical results point to encouraging progress in enhancing ore quality and streamlining operations.

Recent trials using advanced X-ray transmission ore sorting at the Queen Hill deposit have delivered strong indications of feed grade improvements and material cost savings. This marks an important step in refining the project’s processing approach and may pave the way for a leaner, more efficient production pathway.

Boosting Recovery Through Larger-Scale Trials

Enhanced Feed Quality

The company’s latest trials were carried out on significantly larger material samples taken across the Queen Hill orebody. These tests provided deeper insights into how varying grades of ore respond to sorting technology. The outcomes suggest that refining feed quality before it enters the processing stream could allow for reduced plant size requirements and lower energy usage.

Waste Removal Benefits

Waste removal is emerging as a major cost-saving factor. Sorted material demonstrated improvements in grinding performance, potentially reducing power needs in downstream processing. Additionally, the removal of waste could allow the use of a low-cost backfill option in the underground mine, which may negate the need for more expensive filling methods.

Exploration Momentum at East Renison

At the East Renison project, Stellar has uncovered a mineralised zone with a diverse mix of metals including tin, antimony, gold, silver, copper, and other valuable minerals. Historical rock chip sampling results are helping guide new exploration activities, with soil sampling and mapping forming part of the upcoming work plan.

The company has also secured government support for drilling at the Carbine Hill East target, further underscoring its focus on advancing exploration programs alongside technical process improvements at Heemskirk.

 

Frequently Asked Questions

  • What is the significance of Stellar Resources’ breakthrough at Heemskirk?
    The breakthrough in ore sorting technology is expected to enhance ore quality, lower operational costs, and improve processing efficiency, strengthening the overall project outlook.
  • Why is waste removal important in mining operations?
    Removing waste before processing reduces plant size requirements, lowers power consumption, and can enable cost-effective backfill solutions in underground mines.
  • What are Stellar’s next steps at its project sites?
    The company plans to complete further testing of sorted products, update its mineral resource estimate, and progress exploration activities at both Heemskirk and East Renison.

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