HiGrade DPI - A modern tool for placer gold exploration

HiGrade DPI is a novel analysis tool for placer gold that relies on modern image processing to identify gold particles in a high resolution image. Gold particle count, size and shape are instantly presented in a report. Based on that, the calibrated tool calculates the gold content of the sample in g/t or g/m3

"A game changer for placer miners looking for quick and accurate sample results"

Matt Conley

Macon Industries - manufacturing world-class exploration and gold mining equipment

"HiGrade DPI has provided us fast and repeatable results for our Northwestern Australia alluvial exploration program"

Neil Howett

Novo Resources Corp - Exploring and Developing gold properties in Australia's Pilbara region

Applications

Drilling

Bulk Sampling

Analyze samples in the field or laboratory. Applicable for pits, trenches, auger or percussion drill samples.

Bulk Sampling

Extract data from representative samples. Replaces counting, mercury amalgamation or fire assaying.

Mining

Bulk Sampling

Mining

Make sound decisions on the move of heavy equipment to the most prospective locations. HiGrade DPI predicts the gold recovery rates.

Downloads

HiGrade DPI Brochure 2019 (pdf)Download

Basics of alluvial gold exploration (pdf)Download

Sample Calibration Report (pdf)Download

Sample DPI Scan Report (xlsx)Download

Video

Automated image analysis

The right image shows a small section of the native high resolution scan
The left image shows the automatically processed version: Gold particles delineated for shape and size information, gangue particles (iron oxides, etc.) excluded

Plug&Play HiGrade DPI tool includes

HIGRADE Digital Particle Imaging and Analysis software
Protector case with laser-cut foam insert for maximum protection in harsh environments
Scan hardware and custom sample holders
Accessories for sample presentation and sample removal
Pre-installed and tested - Plug - and - Play

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Photo Gallery

Late Prof. Hermann Wotruba

Jonas Boehnke

Late Prof. Hermann Wotruba

Image analysis based, non-destructive placer gold analysis was introduced by late Prof. Hermann Wotruba, a globally recognized expert in gold exploration at RWTH Aachen University.

The technology was applied extensively by Dr. Andreas Schiffers while evaluating means of gold recovery as a by-product from sand/gravel operations in Europe.

HiGrade Technik first commercialized DPI with robust hardware and fully integrated scanning, image processing and reporting software.