Comminution

Here are some frequently asked questions

• How much sample mass do I need for these tests?

  Keep in mind the mass may vary depending on the core size or particle size distributions, but some rough guidelines are as follows:

  • UCS and PLT simply require sufficient mass to contain the required specimen sets. Soft of finer sized material may not be suitable for these tests and this provides an engineering outcome in itself (i.e. the ore is soft and will require very little crushing energy).
  • Bond Impact Crushing Test (CWi) – sufficient mass to produce 10-20 x particles between 50-75 mm with two parallel facing sides.
  • Bond Abrasion Index (Ai) – sufficient mass to produce 4 x 400 g of charges of - 19+12.7mm ore.
• Will ALS treat hazardous samples?

  Generally, yes. ALS has facilities and procedures to treat fibrous and radioactive samples. Surcharges do apply, however, to cover safety equipment, monitoring and decontamination.

• Our samples are from overseas, what do I do?

  ALS is a quarantine approved premises and treats many samples of oversea origin. Strict regulatory requirements are in needed around packaging and paperwork, however. ALS can advise you on these requirements.

• Can my associates and I view the testwork at ALS’s laboratory?

  Yes, clients are always welcome to visit our facilities and observe samples or tests in progress. Inductions are required and other rules may apply to visitors.

• Will ALS dispatch my samples to third parties?

  Yes, if a testwork program is in progress, ALS will happily dispatch testwork products and feed samples to vendors, third party laboratories, and customers as required. Fees apply.

• Does ALS do design engineering and consulting?

  No, as it is not our core business and would put us in direct competition with many of our clients. In the case of HPGR testwork programs, KMA as equipment suppliers, provide engineering and consultancy for their industrial units and can provide relevant information for the manufacture and supply of appropriate Koeppern HPGR units.