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Manufactured Sand

manufactured sandManufactured sand is a general term of artificial sand and mixed sand through the soil removing process.

Mixed sand is a kind of mixture of artificial sand and mixed sand.

Artificial sand, also known as machine-made sand, is the rock, mine tailings or industrial solid waste particle with below 4.75mm grain size through the soil removing, mechanical crushing and screening processes, but not including soft, weathered rock particles.

manufactured sand crushing plantThe quality of manufactured sand (mainly refers to the artificial sand); largely depends on the sand making equipment and of course the raw materials and production technology, etc. In terms of equipment, sand manufacturing machine can be differently classified in accordance with the crushing principle such as jaw crusher, cone crusher, gyratory crusher, hammer crusher, gyradisc crusher, impact crusher, roller crusher and vertical shaft impact crusher. Considering the quality of the grain size of the end product, rod mill sand maker, hammer crusher and vertical shaft impact crusher can get the better quality m-sand than impact, gyradisc and cone type crusher. The quality of manufactured sand produced via jaw, roller and gyratory type crusher is worse than crushers mentioned above. There are several common manufactured sand production lines in construction industry, for example, rod mill sand making machine + sand washing machine. In order to reduce the loss of fine sand, the sand manufacturing line is usually equipped with one set fine sand recycling machine. This production process can produce high quality manufactured sand, but its cost is higher than others because it adopts wet sand making technology that has a strict requirement for water resource and a high volume water consumption; There are some small-scale construction sites using hammer crushers. Hammer crusher has the features of high productivity, high crushing ratio, simple structure, easy maintenance, etc., but its main spare parts like hammer head, grate head, liner plates, rotor disc are easy to wear. Additionally, if the raw materials is harder, the sand grain size and gradation will be hard to control so as to effect the concrete homogeneity; In recent years, with the production technology vertical shaft impact crusher developing and improving, more and more user choose VSI sand maker to produce high-quality manufactured sand. The sandstone corners are collided and ground in the crushing chamber, so that it can produce good grain size and continuous gradation manufactured sand. What’s more,  VSI adopts the dry sand making technology, so it has nearly no special requirement for the water resource, which can greatly reduce the production cost.

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