You will find some of the Knelson Research and Technology Centre's most commonly asked sample testing questions below. If you find your question is not answered, please complete the sample testing form and one of Knelons R&D experts will contact you shortly.

1. What is gravity recoverable gold (GRG) testing?
   • Answer: Learn more on GRG testing here.

    

2. What can the Knelson technology recover?
   • Answer: The Knelson technology has historically been most often used for the recovery of gold and other platinum group metals (PGM's). However with newer technology such as the Continuous Variable Discharge concentrate (CVD), the spectrum of minerals that can be separated has increased significantly. Any mineral that can be separated based on its specific gravity is now a candidate. Such metals or minerals include native copper, silver minerals, tantalite, cassiterite, chromite, pitchblende, industrial minerals and various metal sulfides to name just a few.

    

3. Are your lab services strictly for gold testing?
   • Answer: No. KRTC's lab/sample testing services are not just for gold testing. KRTC tests samples that contain various metals such silver, PGM's and native copper. Other Knelson pilot facilities have tested other industrial minerals for gravity recovery using the CVD.

    

4. How does the Knelson batch and continuous concentrator work?
   • Answer: Learn more on how the Knelson Concentrators work here.

    

5. What are the most common minerals that a Knelson is capable of recovering?
   • Answer: Knelsons are most commonly used to recover gold, silver and PGM's.

    

6. What is KRTCs testing procedures?
   • Answer: There are two basic tests that are performed at KRTC's lab; a general gravity amenability test (GAT) and detailed gravity recoverable gold (GRG test).

    

7. Why should I send a sample?
   • Based on Knelsons 20 years of experience and modeling of gravity recovery circuits, Knelsons engineers and technical staff can help you interpret and determine the scale-up implications of the test results.

    

8. How do I send a sample?
   • Learn more on how to send samples.

    

9. What does it cost to process a sample?
   • Learn more on the sample testing rates.

    

If you have additional questions or require additional information, please complete the online sample testing form and a Knelson technical representative will contact you shortly.