The first US patent issued to a rock crushing machine was in 1830 Its key technology was the drop hammer concept found in the well known stamp mill which would be repeatedly linked to the golden age of mining Eli Whitney Blake invented patented and sold the first actual rock crusher in 1858 it was known as the Blake Jaw Crusher
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Get PriceAll rock crushers can be classified as falling into two main groups Compressive crushers that press the material until it breaks and impact crushers that use the principle of quick impacts to crush the material Jaw crushers gyratory crushers and cone crushers operate according to the compression principle
Get PriceAll rock crushers can be classified as falling into two main groups Compressive crushers that press the material until it breaks and impact crushers that use the principle of quick impacts to crush the material These different types of impact crushers share the crushing principle impact to reduce the material to smaller sizes but
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Get PriceThe Crusher s Rock Breakers Area of Application Here is a list of Rules of Thumb often used in Rock Crushing and around Crushers Crusher Selection For a hard rock mine application below 600 tonnes/hour select a jaw as the primary crusher Over 1 000 tph select a gyratory crusher Between these capacities you have a choice
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Get PriceThere are many steps to take bowling ball size rocks or bigger to pea gravel pieces or smaller The most common primary crusher is the jaw crusher An assortment of chutes conveyors and feeders carry rocks to secondary and tertiary crushers and screens Crushers reduce the size of rocks and the screens sort them
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Get PriceThere are several types of primary crushers including Gyratory Crushers Jaw Crushers Hammermills Horizontal Shaft Impact Crushers Sizers Roll Crushers Cone Crushers Feeder Breakers Gyratory Crushers Gyratory Crushers are an excellent choice for a primary crusher as they can handle very hard and abrasive material
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Get PriceThe jaw crusher reduces the size of large rocks by dropping them into a V shaped mouth at the top of the crusher chamber This is created between one fixed rigid jaw and a pivoting swing jaw set at acute angles to each other Compression is created by forcing the rock against the stationary plate in the crushing chamber as shown in Fig
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