Business & Trade

Preparation for Mining and Quarrying Process

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Site evaluation and preparation requires planning to meet permitting requirements. Guidelines for clearing tress and vegetation; stripping, transporting, and storing topsoil and overburden; constructing fences, berms, buffer zones, roadways, and sediment traps; and constructing or installing permanent or portable processing equipment are followed.

Mining of crushed stone or sand and gravel is dependent on the geologic characteristics and the extent and thickness of the natural deposit. Open-pit mining and quarrying are most commonly used, although some stone is mined underground. Sand and gravel deposits above the water table are excavated with bulldozers, front-end loaders, tractor scrapers, and draglines. Deposits below the water table, including stream and lake bed deposits may be excavated with draglines or from barges using hydraulic or ladder dredges. Mining and quarrying stone generally require drilling and blasting, after which the rock is then transported to a processing facility such as impact crusher on trucks and conveyors.

Processing plants are generally constructed on the site of extraction. Processing of mined or quarried rock requires primary and possible secondary crushing, depending on the sizes of aggregate needed. After crushing, the crushed stone and sand and gravel usually are sorted to size, then moved by conveyors to bins or stockpiled.

The goal of reclamation is to return the land to a beneficial use. By planning reclamation before the aggregate is extracted, it can be mined with how the quarry will look when it is reclaimed. This can make it easier to turn quarries into scenic, lake-front property, wildlife parks, golf courses, office parks, roller coaster rides and the many other items a quarry can eventually become. Parts of the mine can be reclaimed while continuing on-going mining operations in some instances.

Reclamation procedures depend on the configuration and character of the area. Progressive reclamation typically involves the following three steps: terracing the pit or face walls during or after extraction, final shaping of the area by replacing and reconfiguring the overburden, and landscaping. Reclamation plans are most effective if operators and planners select a strategy that satisfies the land use needs of the community and at the same time provides an economic incentive for the operator

Hongxing Machinery lays much emphasis on the quality and clients. We serve clients with the quality guideline of being responsible for every working procedure, every product and every client. What we have done is for the clients and we believe that quality is the best way to develop market. All of the products like sand maker have passed the authentication of ISO9001. Hongxing Brand is the Chinese Famous Brand. Reliable and stable quality is the key to success. Our products are well known at home and abroad. Now we have tens of thousands of users throughout China and more than 30 world markets.


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