Broyeur pendulaire
Laboratory

The POITTEMILL Control laboratory is equipped with measuring devices designed to characterize the physical properties of the raw materials to be treated from samples provided by our customers. Pre-project indexes such as humidity content, HGI and Work Indexes are determined according to standardized procedures (ISO 5074 for the Hardgrove grindability Index).

After the tests have been concluded, the fine particles resulting from the grinding or selection are analysed in order to establish the particle size distribution curves.

Particle size testing methods :

  • Standardized sieves (AFNOR, ASTM),
  • Mechanical sifter,
  • Suction sifter,
  • SEDIGRAPH X-ray particle size measurer,
  • COULTER particle size measurer.

In order to establish a close working relationship with their customers, POITTEMILL and FORPLEX compile the maximum amount of information about the products to be treated, notably that concerning the microscopic structure that may influence behaviour under grinding or selection (lamellar structure, spheroid or oolitic structure, tendancy to clog and specific risks liked to the product – ATEX, toxicity, corrosiveness ...).



SAMPLES

POITTEMILL and FORPLEX have compiled a significant amount of knowledge about the wide range of products already tested in the Control centre. The company has a database containing thousands of tested products, each one listed with the different particle sizes obtained and the corresponding type of grinding equipment.

Below is a panel of raw materials grind-tested in the Control laboratory:

basalt
Coke
Rice
Cream
Oxydes
Fishmill
N.P.Ks
Plants
MCP / DCP
Scoria
MAP / DAP
Coal
Colours
bicarbonate
anthracite
Guano
Clinker
Potash
make-up
Floor
Phenos
Dolomite
limestone
Fertilizers
biomass
Fruits
baryta
apatite
Pigments
Wheats
Toothpaste
vegetables
lignite
Plastics
bentonite
Lime
gypsum
Phosphates
kaolin
N.A.C
Cristobalite
Pet.Coke
clays
Pechblende
Vitamins
antibiotics
anhydrite
Quicklime
Ochre
Shampoo
Graphite
Spices
SSP / DSP
Uranium
Sugar
Medics
Talc