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WhatsApp: +86 18221755073The Problem - Coal fired power plants typically operate several ball mills or coal pulverizing mills to crush the incoming coal to the optimum size for combustion. This means that each power generation unit has five or six mills. The gearboxes that run these coal mills are usually lubricated with high viscosity oil, such as ISO VG320 or ISO VG460.
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WhatsApp: +86 18221755073These mills typically grind ROM ore in a single stage. A large example of such a mill was converted from a single-stage milling application to a semi autogenous ball-mill-crushing circuit, and the application is well described. This refers to high-aspect AG/SAG mills. Ball Charge Motion inside a SAG Mill. With a higher density mill charge.
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WhatsApp: +86 18221755073The Modelling of the gear box is made using the solid works and detailed below. In the below Fig. 1 model of the ball mill is shown along with the gear drive. The gear drive and its speed reduction ratio calculations are given in the previous chapter. Here the emphasis is made on the gear box for the functioning of the gear box.
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WhatsApp: +86 18221755073Crusher product is typical feed to a ball mill using large diameter balls but not much grinding of 20-25 mm ore can be accomplished in an autogenous mill. Autogenous plus Pebble Mill are an excellent technique if the ore is uniformly hard and competent but it has not been popular because the porphry copper orebodies do not …
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