Pre-concentration by Bulk Ore Sorting (BOS) has gained interest in the mining industry over the past few years due to its environmental and economic benefits. The BOS method is utilizing reducing natural rock heterogeneity in separating the waste rock from the ore before it enters energy intensive grinding and mineral processing process.

IMA Engineering carried out grade control study in a low grade nickel mine, utilizing the new Percussive Drill Sampler - Analyzer (PDSA) trailer mounted version. The goal of the study was to compare the current mine grade control method with the new continuous On-Line sampling and analysis method, and calculate it’s effect to the mine economy.

This week, we continue our series of posts on the topic of Blast Hole Sampling and Analysis in Ore Grade Control in Mining and today we are talking about IMA Engineering’s Methods, Equipment and Results for Blast Hole Sampling. This article and the attached white paper are the continuation of our previous article that you can read here.

Blast hole sampling and analysis in Ore Grade Control in Mining is a topic that we feel, hasn’t been covered enough. During the month of March 2021, we aim to bring some clarity on this topic and to present some solutions to the current challenges faced by mining companies all over the world.

The 1st sample collection for ITERAMS WP1 and WP2 was done in July 2017. After first sample series were tested in Leoben and Oulu Universities, and first results were received during winter and spring 2017-2018, a new campaign was planned and decided.