Our Qualified Chemists and Assayers are dedicated to configuring Optimized Metal Recovery and Accurate Results.
Common Methods of Gold Analysis:
Flame & Graphite Furnace Atomic Absorption
Fire Assay is the Industry Standard used to Validate your Project when seeking Financial Investment or Bank Loans.
We Assay Base Metals, Gold, Silver, and Platinum Group Metals.
Arrakis offers Customized Fluxes for Unique or Refractory Ores.
Fire Assay Beads are analyzed by Graphite Furnace & Flame Absorption.
UNDERSTANDING THE FIRE ASSAY PROCESS
Click on each image
Crucible in 2000 Degree Furnace
Methodology involves mixing ground ore with dry chemicals (flux) & fusing in hot furnace.
Flux & ore are mixed together & put into a crucible. The crucible is placed in a hot furnace to initiate melting of ingredients.
Fire Assay Molton
The flux is designed to draw out the impurities within the ore into the molten glassy slag, collecting the precious metals into lead & silver.
During the fusion, chemical & thermodynamic reactions occur, resulting in a glassy slag & a lead-silver button.
Cupels Entering Furnace
Lead button is then placed in the cupellation furnace
The lead button contains the precious metals, silver and gold from the ore.
Cupels exiting the furnace.
End result is the production of physical precious metal bead
LABORATORY INSTRUMENTS GALLERY
Au & Ag Analysis
GOLD & SILVER ANALYSIS
PLATINUM GROUP METALS ANALYSIS
OPERATING GRAPHITE FURNACE ATOMIC ABSORPTION
Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES), is an analytical technique used for the detection of chemical elements. It is a type of emission spectroscopy that uses the inductively coupled plasma to produce excited atoms and ions that emit electromagnetic radiation at wavelengths characteristic of a particular element. It is a flame technique with a flame temperature in a range from 6000 to 10000 K. The intensity of this emission is indicative of the concentration of the element within the sample.
Atomic Absorption Spectroscopy (AAS) is a spectral analytical procedure for the quantitative determination of chemical elements using the absorption of optical radiation (light) by free atoms in the gaseous state. AAS can be used to determine over 70 different elements in solution.
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is a type of spectroscopy that uses the inductively coupled plasma to produce ions that travel though an electrostatic focuser to a mass analyzer and counted. As the charge of the focuser changes, different elements are allowed to reach the detector. The plasma operates at a temperature of nearly 10,000 C or 18,000 F.