Hot Sale Cast Grinding Media Ball For Ball Mill And Mine Ore Dressing Modelamp;Specification Name Material Chemical elements Hardness C Si Mn S P Cr HRC Cast iron ball Special cr1 2.0 3.0 ＜1.0 0.5 2.0 0.06 0.06 ...
Our Services. We supply forged steel grinding balls with diamater 20mm 150mm. We supply casted iron grindingballs with diamater 20mm 150mm. We supply grinding rods made by C45 Steel ,60Mn Steel,B2 Steel,B3 Steel. We supply grinding cylpeb with High Chrome,Low Chrome,Medium Chrome. Type and Chemical Composition of Forged grinding Ball.
The chemical composition of the high chromium type product should conform to the below table. We can also manufacture the product with special chemical composition in accordance with the requirements of the customers. The nominal diameter, allowable deviation, maximum diameter, minimum diameter of the cast grinding steel ball should be in accordance with the following table. The high chromium type of product can be manufactured with the mechanical properties following the requirements of customers.
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The environment in primary ball milling can best be described by giving equal considerations to both impact and abrasive conditions. The relatively large ball sizes employed 3 4 contribute a significant impact component to the overall wear. The number of impacts in primary ball mills are far more frequent but have less magnitude than those experienced in SAG mills. The increased frequency is due to the Increase in charge volume , higher mill speeds, and the larger number of balls per unit charge weight. The lower impact forces are due to a combination of both smaller ball masses and lower drop heights resulting from the use of smaller balls and smaller mill diameters, respectively. The feed ore in primary grinding mills is typically very abrasive owing to its particle size, shape, and mineralogy. Wear speeds approaching or exceeding 20 µm/hr. have been measured for very abrasive Au. Cu, and Mo ores, while wear speeds on the order of 10 15...
In secondary ball milling, abrasive and corrosive conditions predominate. The smaller balls lt; 2½, typically used in secondary milling environments effectively reduce the impact component of wear to the point where grinding media must be primarily designed to reduce abrasive and corrosive wear. It can be seen in Figure 3 that the range of wear speeds in secondary grinding widely overlap the range of wear speeds measured in primary grinding. This represents the large variations in abrasive and corrosive wear conditions found at the various testing locations. The best way to compare primary versus secondary grinding conditions is to review MBWT data from primary and secondary applications for the same mill. This comparison is presented in Table IV. The Wear Speeds in secondary grinding are found to be 25 40% lower than those seen in primary milling when grinding the same, but finer, ore. This comparison shows that the reduction of the impact component of wear due to the sm...
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