— In mineral processing the reduction of minerals by crushing and grinding may be regarded as having one or other of two main objectives the attainment of a size appropriate for the direct industrial application of the mineral barytes sand aggregate; or the release of metallic or ore inclusions from an unwanted matrix with a view to
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The main purpose of a primary crusher is to reduce the material to a size that allows its transportation on a conveyor belt In most crushing installations a jaw crusher takes care of primary crushing Plants with very high capacities that are common in mining and less popular in aggregates production normally use a primary gyratory crusher
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4 — Secondary Crusher As the name suggests secondary crushers follow the primary crushers and are used to further reduce the size of the material They are designed to handle medium sized materials and produce a finer output compared to primary crushers Tertiary Crusher Tertiary crushers are employed when further reduction in size is required
4 high bars this mode is for processing small materials asphalt millings or gravel or in a secondary crushing application after a jaw crusher 2 high & 2 low bars this mode is a multi purpose setup which is ideal for primary crushing and recycling applications
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Nordberg® GP300S secondary cone crusher is designed for economic and efficient size reduction in secondary crushing applications It is often used in aggregates production and in mining operations
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— For primary crushing with a reduction ratio of 6 to 1 When a relatively coarse product is desired top size usually larger than 38 mm 1 1/2" Closed Circuit Crushing System To control top size from a single crusher operating in an open circuit material must remain in the crushing chamber until the material is reduced to top size
— The physical size and power requirements of a crusher capable of reducing hard rock vary depending on the application Extended experience in most crushing plants show that a minus 19MM ¾ rod mill feed can be and is being produced in three stages of crushing Standard Secondary Cone Crusher Refer to Fig 1 The Standard Cone
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— The setting of the secondary crusher is therefore adjusted so that the tertiary crusher can operate with a feed that offers the best trade off between cost and ability to generate correctly shaped final products This is achieved by providing the crusher with the optimum average feed size
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Primary Crushing The purpose of the primary crusher is to reduce the ROM ore to a size amenable for feeding the secondary crusher or the SAG mill grinding circuit The ratio of reduction through a primary crusher can be up to about 8 1 Feed ROM up to m; Product 300mm for transport to 200mm for SAG mill Feed Rate 160 to 13 000 tph
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This crusher is suitable for a high capacity secondary crushing application Sandvik CS430 cone crusher is characterized by the large intake capability and the high capacity in relation to size proving to be a versatile and efficient option for many applications
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— The size of jaw plates used in a jaw crusher can vary depending on the type of crusher and the application Jaw plates are typically rectangular in shape and are designed to fit around the crushing chamber of the jaw crusher The size of the jaw plates can affect the capacity and performance of the crusher
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Whether it is primary secondary or tertiary crushing dump fed or metered our sturdy versatile Sizers have been expertly designed to handle many different materials and throughput capacities Not only are Sizers insensitive to soft wet and sticky material but they can also process hard abrasive rock either separately or combined
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— Although their common and basic function is reducing large size of rock into small size they are applied to different crushing stages like primary secondary tertiary quaternary stages It is necessary to clarify what are the differences between all crusher types because any of them can maximize their value only in an optimal environment
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— The primary crusher is responsible for reducing large rocks to a size that can be further processed by the secondary crusher which then reduces the material to the desired final product Efficient primary and secondary crusher operation is essential for smooth crushing operations
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The forged or cast hammers range is from 30kg to 200 kg in weight according to the size of the crusher The discharge grids enclose the rotors through an angle of between 120° and 180° For obtaining a product of favorable size for feeding to grinding mills it is generally necessary to apply secondary crushing in another type crusher
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A secondary crusher reduces the material to sizes between 3/4 and 1 inch The resulting material is then fed into the tube mills To increase the throughput of the tube mills a tertiary crushing stage in which the material is reduced down to about and inches is sometimes provided whereas crushing to final particle size is
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— Best suited for secondary crushing applications cone crushers are designed to crush pre sized materials usually 100mm 150mm or 200mm depending on the size of the crusher Cone crushers can form finished products down to 12mm or less
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Depending on the size reduction required the primary jaw crushers are followed by secondary and tertiary crushing The last crusher in the line of operation operates in closed circuit That is the crushed product is screened and the oversize returned to the crusher for further size reduction while the undersize is accepted as the product
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Nordberg® GP500S secondary cone crusher is engineered for economic and efficient size reduction in secondary crushing applications It is often used in aggregates production and mining operations The crusher s heavy duty design and use of high quality components with optimized wear parts keep the operating costs down
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Whether it is primary secondary or tertiary crushing dump fed or metered our sturdy versatile Sizers have been expertly designed to handle many different materials and throughput capacities Not only are Sizers insensitive to soft wet and sticky material but they can also process hard abrasive rock either separately or combined
4 high bars this mode is for processing small materials asphalt millings or gravel or in a secondary crushing application after a jaw crusher 2 high & 2 low bars this mode is a multi purpose setup which is ideal for primary crushing and recycling applications
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