Sampling and Estimating Disseminated Copper Deposits
2016年2月24日 · There are three main requisites for accurate diamond-drill sampling. First, the core should be removed and the hole cleaned out at the beginning of every sampling interval, usually 5 ft. (1.5 m.) . After the rods are let down, water should be run through them until it becomes clear. The water must be clear before drilling starts.
Ore Sampling Methods: Good & Proper - 911Metallurgist
2017年2月21日 · No reputable concern to-day would think of attempting to determine by grab-sampling the amount of gold, silver, lead, or copper contained in an ore, and yet many buyers expect the miner to accept the results of grab-sampling in the determination of the amount of water contained in the ore, forgetting that accurate results are just as necessary h...
Copper analysis - alsglobal.com
For more mineralised samples such as massive sulphide ores and concentrates, ICP-AES, XRF and classical chemistry methods are offered. Geochemical exploration for copper generally uses multi-element methods that produce large suites of trace-elements.
Rapid detection of copper ore grade based on visible-infrared ...
2022年11月15日 · Therefore, this paper proposes a detection method for ore grade using visible-infrared spectroscopy and an incremental two hidden layer extreme learning machine with variable hidden layer nodes based on the truncated singular value decomposition (TSVD-IVTELM) algorithm. Firstly, the spectral data of each sample are obtained by spectrometer.
A bulk sorting trial of copper ore using a magnetic resonance …
2024年5月1日 · Bulk sorting of copper ore at 2800tph achieved. Measurement on conveyor with a 3-sigma minimum detectable grade of 0.045 wt% copper as chalcopyrite in 4 s. Sorted ore found by re-circulation to be less than 0.2 wt% copper. High …
This work discusses the analysis of copper ore samples from various drill patterns to meet these requirements.
Sample Preparation Guides - inorganicventures.com
In developing a sampling approach it is helpful to have a ballpark idea of the concentration of Cu in the sample. If the sample type is typically low in copper it is necessary to be aware of contamination risks and take steps to minimize them. The following are sample types expected to be low in Cu along with expected levels:
Copper Ore Mineralogy - Bruker
Porphyry copper ore is challenging X-ray mineralogy. The mineralogy of the ore, concentrates and residues is complex. Twenty or more minerals are to be quantified in most of the samples. Peak overlap is massive and may mask minor phases. Clays and other layered material make a reproducible sample preparation difficult.
Processing and Analysis of Native Copper Ore Samples
2008年8月28日 · Through the experiments of sampling, size grading, screening, splitting and homogeneity test for the native copper ore samples from northeast Yunnan province, a sample processing procedure was established.
Testing of ore samples - enhg.org
Over the years, we have considered different methods of reliably testing for the presence of copper ore in samples collected in the field. We are satisifed the method we have chosen is reliable. Examples of the results can be seen below.