logo


REFINING & ANALYSIS OF KAOLIN, HALLOYSITE, BALL CLAYS, BENTONITE & OTHER CLAY MINERALS

 quarry drill kaolin_core
G3

Laboratory Refining (typically core drill matrix):


Bulk Density of Matrix
Blunge, Screen, Filter
Clay Yield & Mass Balance
Bleaching, Reductive & Oxidative
Sample Analysis (see below)

    

Pilot Plant Refining:

Hydrocyclones and Centrifuge
Froth Flotation
Selective Flocculation
Super Conducting Magnet
Calcination

Grinding/Milling
Mass Balance and Energy Calculation

 

  

Sample Analysis:

Clay

Mineralogy by XRD, SEM and TEM
Chemical Composition by XRF or ICP
Trace Metals by AA or ICP
Particle Size Distribution by Sedigraph or Malvern
Residue retained at 45um with identification
Surface Area and Pore Volume by N2 Adsorption                                             
ISO Brightness and CIE L, a, b colours by Datacolour Elrepho 
Abrasion by Einlehner
Oil absorption
      
Viscosity by Torsion or Shear Viscometers
Modulus of Rupture
Fired Properties: Brightness; Contraction and Water Absorption 
Casting Properties: Cast Rate, Cast Concentration and Deflocculation Demand
Pozzolanic activity by Chapelle Test

Approved laboratories within the UK are sub contracted for some of these procedures.

JORC requirements are met wherever possible.

Coarse Fraction

Screen oversize, cyclone underflows or magnetic fractions may have a commercial value. For example there may still be recoverable clay present or there might be feldspar, quartz, mica or even valuable heavy metals such as tantalum & niobium which can be extracted and purified.
The following techniques can be employed to investigate market potential.

Mineral Identification by XRD & SEM
Chemical Analysis by XRF
Heavy Metals by ICP
Thin Section Analysis by Petrographic Microscope
Photographs in Plane Polarised Light and under Crossed Polars
Alkali Silica Reaction
Particle Size by Sieving

Marketing Advice: Construction; Ceramics; Glass; Water Filtration etc

Back To The Top Of Page

periodic_table

© First Test Minerals 2015 | Linkedin | Flickr