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Ore Rod mill is loaded by the cylinder body of grinding medium is named for the steel bar and rod mill is generally adopts wet the overflow type, can be used as a first class open circuit grinding, rod mill is widely used in metal and nonmetal mines and water conservancy, building materials department all kinds of ores and rocks. ore Rod mill has dry and wet two forms, the user can choose according to their own actual situation to.Wet rod mill according to the discharge mode can be divided into the overflow type rod mill, open mouth rod mill, the type of rod mill around three, one is given priority to with the overflow type rod grinding mill.
Rod mills are very similar to ball mills, except they use long rods for grinding media. The rods grind the ore by tumbling within the the mill, similar to the grinding balls in a ball mill. To prevent the conditions leading to rod charge tangling, the length to diameter ratio is maintained at 1.4 to 1.6. Rod mills accept feed up to about 50 mm (2 in.) and produce a product in the size range of 3000 to 270 mm (–4 to –35 mesh). Grinding action is by line contact between the rods extending the length of the mill. Rods tumble and spin in roughly parallel alignment simulating a series of roll crushers. This results in preferential grinding of coarse material and minimizes production of slimes.
The pin crusher can be widely used in the processing of quartz sand, dolomite and monazite, ore-dressing of non-ferrous metals, ferrous metals and non-metal, the first-stage ore milling of artificial stone sand, dressing plant, chemical plant and power sector, and the grinding of the chemical industry, building materials and other mineral materials. When two continuous grinding is used, if the first paragraph from 20-6 mm mill to 3-1 mm, the ore rod mill grinding device for the first paragraph, large production capacity, efficiency is also higher.3). In some cases, rod mill can replace short head cone crusher finely.
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The grinding granularity of the ore rod mill is related to the rocks to be ground. When the steel rods impact the rocks, the large and coarse particles are the first to be hit, and then the small and fine ones. In this way, over-crushing phenomenon can be avoided. So it can also be called crushing mill. And What Else May Influence Work of Mineral Rod Mill?
Ore Rod mill strip steel holding between the gap, these gaps can be timely early acceptance has been broken to a certain degree of debris. To avoid suffering from steel cast down when shock again, and has reached the fineness requirement of particles along the gap by water rushed out of the barrel, therefore sewn can play a role in "screening". Obviously, sewn cross section is large, it is accepted by the debris was coarse, broken pitcher in the fine grinding opportunities. A crushing phenomenon also is light. On the other hand, the crushing will increase. Under the condition of normal production, steel holds constant wear and its diameter became smaller, flatter seam correspondingly smaller. During operation, however, can not be timely check in addition to these has ground to a certain degree of steel bar. So, although regularly join new rods, steel holding gradation is often smaller.
In the process of rod grinder production, the fineness modulus of sand is generally controlled by feed rate. So, in the production of smaller sand fineness modulus, the feed rate of the ore rod mill less often. At this time, due to the materials in simplified effective volume decreases, and other conditions unchanged, under the condition of the unit volume of material will increase in the impact and grinding force, that is, the material of the actual broken more than work, and therefore easy to cause the actual broken than merits, cause serious crush.
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