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In all of the tables in this document, both the pre 2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre 2009 levels unless specifically stated otherwise.
2018 9 11ensp;0183;ensp;Zinc processing Zinc processing, the extraction of zinc from its ores and the preparation of zinc metal or chemical compounds for use in various products. Zinc (Zn) is a metallic element of hexagonal close packed (hcp) crystal structure and a density of 7.13 grams per cubic centimetre. It has only moderate
Mining for Copper Bearing Ore. There are two categories of copper ore; sulphide ore which is processed to enrich it before smelting, and oxide ore that is
2011 8 15ensp;0183;ensp;(A) abrasive paper abrasive base paper absorbing paper account book paper accounting machine
2018 8 29ensp;0183;ensp;From the start of copper mining in the Michigan copper district, ore has been divided into two classes. The rock with higher copper content was smelter ore, also called direct shipping ore, and required no treatment before going to the smelter.
2018 3 15ensp;0183;ensp;Minerals, an international, peer reviewed Open Access journal.
2018 9 10ensp;0183;ensp;Mineral processing Mineral processing, art of treating crude ores and mineral products in order to separate the valuable minerals from the waste rock, or gangue. It is the first process that most ores undergo after mining in order to provide a more concentrated material for the procedures of extractive metallurgy.
2018 9 6ensp;0183;ensp;Smelting is a process of applying heat to ore in order to extract out a base metal.It is a form of extractive metallurgy.It is used to extract many metals from their ores, including silver, iron, copper, and other base metals.Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases or slag and
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