Physical Preparation and Granulometric Testing for mineral samples
23/08/2019 0

The quality of the results of a chemical analysis depends on many factors and specific operations performed previously to the analysis.

Two of the most important steps we can highlight are the sampling and physical preparation of samples.

The physical preparation of geochemical samples requires several important steps, such as: Drying, Crushing, Pulverization and Sample splitting.

  1. Drying is the beginning of the process and aims to remove moisture that can lead to biased results and also promote the breakdown of solid material;
  2. Crushing aims to fragment large materials into smaller compatible particle sizes for additional processing;
  3. Pulverization has the objective of grinding the material into a fine powder. In this step the final grain size to be reached is defined as a chemical analysis requirement;
  4. The Sample splitting aim at the representative division of the sample to obtain smaller aliquots that are representative of the original sample. There are several methods with different levels of performance, so it is required the technical evaluation of the best Sample Splitting method for the prepared material.

There is a wide range of equipment and methods of physical preparation and the choice of equipment, assembling the best preparation flow and the laboratory to perform the activity are of paramount importance to obtain representative samples that can be chemically analyzed for reliable results, which allow makeing important decisions from those information.

ITAK has a great infrastructure and facilities for Physical Preparation of Samples, in addition, a qualified team working for the best market practices.

Granulometric Testing

Granulometric tests are used to determine the particle size distribution of materials such as soil, ores, sands and other materials in which the granulometric distribution interferes on material properties or on its value.

The results from these tests correspond to the percentage by weight that each specified range of grain size represents in the total dry mass used for the test.

Granulometric tests can be performed in several different ways, chosen according to the type of material and the purpose of the test for each particular case. Some common examples are: dry granulometric test and wet granulometric test.

Obtaining reliable results in granulometric test depends on the correct choice of methodology and controls used during the process, such as sieving time, reliable or calibrated sieves, calibrated and verified scales, etc.

The technology’ advancement brings to the market new alternatives for this test such as those performed on laser granulometers, but the choice of the best method for the material must be made by qualified professionals using standardized methodologies.

ITAK has a great infrastructure and facilities for granulometric testing of various mineral samples, in addition, a qualified team working for the best market practices.

Contact our team for more information. 
Phone: +55 31 3851-3166 
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