Product Quality

The quality of extracted and manufactured products is a major goal of our production.

The GALVAPNO Group specializing in lime manufacturing possesses an indispensable aspect of quality which is a modern laboratory.  After all, in order to produce and deliver top-quality products to our customers, all its parameters and characteristics need to be studied.

The measuring laboratory of the enterprise is equipped with modern machinery manufactured by MATEST (Italy), OHAUS (USA), laboratory heat-treatment equipment by Labexpert (Ukraine), and TermoLab that provide high-quality in the sphere of measurement.

The laboratory provides for the testing of both raw materials and finished product. The finished product that comes from furnaces is tested regularly every two hours to provide uniform and unchangeable quality.

The laboratory is certified and carries out the testing based on the national quality standards, and according to the European guidelines DIN EN. 

Limestone chemical testing

Index

Fact, %

СаО content

55,4

MgO content

0,52

SiO2 content

0,38

Fe2O3 content

0,15

Al2O3 content

0,1

SO3 content

0,04

P2O5 content

0,03

СО2 content

43,38

Lime chemical testing

Quality indexes

Normal range

Actual range

CaO+MgO

≥ 90 %

≥ 92 %

MgO

≤ 5 %

≤ 2 %

CO2

≤ 4 %

≤ 3 %

SO3

≤ 2 %

≤ 0,5 %

SiO2

–

≤ 1 %

Fe2O3

–

≤ 0,5 %

Content of active lime

≥ 80 %

≥ 85 %

Volume uniformity

Has to be maintained

Is maintained

Bulk density

–

 ≤ 0,85 kg/dm3

Time of reaching 60°С

≤ 10 min

≤ 4 min

Remains on the grid 80mm

–

≤ 10 %

Permeability through 10mm grid

–

≤ 15 %

Testing carried out by the laboratory

  • Determination of the total content of active CaO+MgO
  • Determination of the content of hydration water and СО2
  • Determination of the content of unburnt granules
  • Determination of the temperature and time of lime burning
  • Determination of the content of hydration water in the lump lime
  • Determination of the uniformity of the lime volume changing
  • Degree of dispersion of pulverized lime
  • Determination of chemical composition of lime and limestone
  • Determination of particle size distribution
  • Determination of loss on ignition (L.O.I)