How does the natural gas come? We can't touch it, like air. But the mineral resources are closely linked to our life. Do you know mining?
Mining is the extraction of valuable mineral resources from the earth, from an ore body, vein or seam. It also includes the removal of soil. Here is a science course called mining engineering. It is an engineering discipline that involves the practice, the theory, the science, the technology, and application of extracting and processing minerals from a naturally occurred environment. Mining engineering also includes processing minerals for additional value.
Here is a kind of mining equipment called crusher. A crusher http://www.ecvv.com/company/xuanshi888/products.html is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Crushers may be used to reduce the size, or change the form of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials so that pieces of different composition can be differentiated. There are many shapes of crushers. For example, a cone crusher. A cone crusher breaks rock by squeezing the rock between an eccentrically gyrating spindle, which is covered by a wear resistant mantle, and the enclosing concave hopper, covered by a manganese concave or a bowl liner. As rock enters the top of the cone crusher, it becomes wedged and squeezed between the mantle and the bowl liner or concave.
Mining engineers are virtually consulted for every stage of a mining operation. The first role of engineering in mines is the discovery of a mineral deposit and the determination of the profitability of a mine.
First, mine discovery. Mining engineers are involved in the mineral discovery stage by working with geologists to identify a mineral reserve. The first step in discovering an ore body is to determine what minerals to test for. Geologists and engineers drill core samples and conduct surface surveys to search for specific compounds and ores. For example, a mining engineer and geologist may target metallic ores such as galena that lead or chalcolite for copper. A mining engineer may also search for non-metal resources, such as phosphate, quartz, or coal.
The discovery can be made from research of mineral maps, academic geological reports or local, state, and national geological reports. Other sources of information include property assays, well drilling logs, and local word of mouth. Mineral research may also include satellite and airborne photographs. Unless the mineral exploration is done on public property, the owners of the property may play a significant role in the exploration process, and may be the original discoverer of the mineral deposit.
Then, the mineral determination. After a prospective mineral is located, the mining engineer then determines the ore properties. This may involve chemical analysis of the ore to determine the composition of the sample. Once the mineral properties are identified, the next step is determining the quantity of the ore. This involves determining the extent of the deposit as well as the purity of the ore. The engineer drills additional core samples to find the limits of the deposit or seam and calculates the quantity of valuable material present in the deposit.
Mining process is not simple, the geologists and engineers need to pay much efforts to do the mining work. Do you think so? And, many mining equipments http://www.ecvv.com/product_directory/cone-crusher.html are needed.
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<a href="http://www.ecvv.com">www.ecvv.com</a> is an innovative and comprehensive business portal in China, dedicated to introduce China qualified products, suppliers and manufacturers to global buyers, and also help global buyers to find much more China qualified products, suppliers and manufacturers.
