What Mining Operations Consist Of

Mining operations have to do with basically four different phases which include, exploration, mining, processing and dressing the mineral, and metallurgical processing.

Prospecting is an activity that is carried out in order to look for deposits of financial interest. Ever since the 1990s, prospecting has made rising usage of satellite images, even though the conventional process such as deep drilling and looking for surface outcrops are still very commonly done these days. The next step, which consists of the extracting of the ore, has to do with the removal of the wanted minerals from the subsurface. The last processing and dressing step has to do with the removing the minerals from the unusable gangue and concentrating them. After a mineral has been moderately treated, it then goes through a metallurgical processing to reach a purity of over 98 percent. Metallurgical processing is by and large seen as an industrial instead of a mining process. 

Mineral dressing and processing
Mineral dressing has to do with all of the mechanical, physical, and chemical processes that are done in order to divide the minerals from gangue and to some extent treat them. This is in most cases the most contaminating step and the one that causes the biggest amount of health risks. In the past, it included three kinds of operations that involved: preparation, concentration, and conditioning. The preparation of ore has to do with the crushing and grinding for size classification by screening. The main idea of concentration is to divide the mineral grains from the gangue. This can be carried out by gravitational methods that have do with the density or weight of the different materials, as well as through magnetic separation, or flotation. This last method is based on processes that entail bringing the mineral or metal particles to the surface of a liquid with several different adjuvants that can be surfactants or solvents. A variety of chemicals are also utilized to change the mineral properties in order to enhance their concentration. Conditioning has to do with compressing, drying, or agglomerating mineral particles so as to change their behavior or potency. Its intention is to make the ore prepared for management or additional metallurgical processing. When these different steps have been carried out, the ore will be more concentrated, however the purity in the end can be quite a bit lower. It is the following metallurgical refining that considerably increases the purity. The last operation, more commonly known as waste treatment, is an environmental step and takes account of the processing of mine water flotation water, and solid mine waste. Melting and refining operations are utilized to generate pure metals or to prepare alloys. Part of these processes can be achieved on site, but they usually take place somewhere else. Steel plants, foundries and aluminum smelters are utilized in metallurgical activities. When it comes to gold, the product that leaves the mine is generally about 96 percent in purity for the reason that the mineral dressing and metallurgical stages overlap.