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  • Blasting for Improved Autogenous Milling at Hibbing Taconite

    Fully autogenous mills rely on the large, competent fraction of feed to act as grinding media. Research indicated that Hibtac mills require specific amounts of 6 to 10-inch ore. High recirculating loads require a steady influx of large rock. Blast designs, therefore, are presently characterized by wide patterns and low powder factors.

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  • Autogenous Grinding Information

    Autogenous grinding has two advantages, (1) it reduces metal wear and (2) eliminates secondary and tertiary crushing stages. Thus it offers a savings in capital and operating costs. Autogenous mills are available for both wet and dry grinding. The diameter of autogenous mills is normally two to three times the length. The ore charge is usually 25 to 35% of the mill volume.Autogenous mills have grate discharges to retain the coarse grinding media in the mill.

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  • Autogeneous grinding in stirred media mills | Request PDF

    Autogenous pebble and fully autogenous grinding of limestone in a stirred media mill, with coarse limestone particles used as grinding media, were studied.

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  • Autogenous mill, Semi-autogenous Mill, Ball Mill Grinding

    Xinhai efficient autogenous mill can achieve two and three stage crushing, part or all crushing of ball mill and rod mill, it is suitable for the coarse grinding after coarse crushing. Finally, in the actual production, Xinhai efficient autogenous mill improved production efficiency, controlled the cost in the operation, the customer is very satisfied with the result.

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  • semi autogenous ball mill

    Semi Autogenous Mill,SAG Mill,China Grinding Mill Manufacturer The semi-autogenous mill also called SAG mill, is mainly used to grind ores and other but it employs grinding balls to assist in its grinding just like in a ball mill.

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  • Grinding mills - Metso

    Grinding mills, spare and wear parts as well as maintenance and optimization services. Efficiency through automatized operation Save power, grinding media, and liner wear while increasing capacity.

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  • Mill (grinding) - Wikipedia

    Autogenous mill. Autogenous or autogenic mills are so-called due to the self-grinding of the ore: a rotating drum throws larger rocks of ore in a cascading motion which causes impact breakage of larger rocks and compressive grinding of finer particles. It is similar in operation to a SAG mill as described below but does not use steel balls in the mill. Also known as ROM or quot;Run Of Minequot; grinding. SAG mill

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  • Autogenous and Semi-Autogenous Mills - ScienceDirect

    Mills that use intermediate size rock or pebbles as a grinding medium are also autogenous mills but are known as pebble mills. Mills that grind hard ores with fracture characteristics that do not lend themselves to fully autogenous milling are charged with a small amount of steel balls to assist in the size reduction.

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  • AG Autogenous Grinding - Mineral Processing amp; Metallurgy

    Intermediate Autogenous Grinding. A reasonable rate ratio between media and total mill feed was established. This ratio is dependent upon the quality of the media and the grindability of the mill feed. With a proper size ratio of media to feed, critical size buildup did not occur.

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