In the mineral processing industry, ball mills are used to reduce ore from one size distribution to another Ball mill wear occurs as a result of the violent interactions within the ball charge In the present article, a mathematical description of wear has ,
Get MoreApr 29, 2017· The rate of wear is equal to the amount worn off divided by the time required; but the amount worn off in any interval is 1/6πS (Da³ – Db³) The total weight of the balls in any interval is equal to the number of balls in the interval times the mean weight of these balls.
Get MoreNov 12, 2016· An equation given by Mortsell, for the rate of metal wear, is where is the total weight of balls, Wt’ is the wear per unit time, d is as before and K is a constant which generally fills between 9 and 16 for Swedish ore but, in extreme cases, between 5 and 23; Wt’ being in kilograms per hour and in metric tons
Get MoreA rotating mill charged with media and ore is lifted against the inside perimeter , density and composition of the ore Ball wear is directly proportional to surface area per unit mass and thus inversely proportional to ball diameter , Wet Ball Mill = kg kWh = 016(A i-0015) 033;
Get MoreCylindrical ball mill media is more suitable for fine material grinding because the contact area is larger with the line contacting each other cylpebs Let’s discuss following aspets of charging, size, wear rate and ball to powder ratio in real production , Wet overflow ball mill: 350:
Get MoreLabfile4u Ball mill Apr 13 2017 The ball wear is usually in the range of 450gms to 1250gms per tons of ore crushed and the liner wear range form 050-205 gms per ton of ground ore Working Principle Ball Mill i Ball mill Get Price; iron ,
Get Moremaximize this rate The mill grinding efficiency can also be calculated by taking the ratio of the mill grinding rate over the material’s grindability as measured in the lab Mill percent solids optimization has thusly been achieved (McIvor et al, 2000) For media sizing, maximizing the mill grinding rate on a given ore is equivalent
Get MoreFeb 13, 2017· Ball Mills The ore from the crushing section is delivered to the fine ore bin placed at the head of the grinding section, from which it is fed, together with water, to one or more grinding units consisting of a ball mill or rod mill in circuit with a classifier One such unit with a conical ball mill is shown in Fig 9
Get MoreApr 30, 2018· In addition to wear speed, ball size and recharge practice, charge volume, and feed rate are significant factors affecting the actual production wear rate Wear speeds are largely independent of ball size and ball charge volume The wear rate exponent for SAG milling was experimentally determined to be n = 28
Get Moreore mill wet ball mill media wear rate Grinding Media Grinding Balls Union Process Inc Silicon Carbide Balls are very high-cost grinding media that are used for milling same materials (silicon carbide ball to mill silicon carbide materials) to avoid contamination They are only available in 5mm 10mm 15mm and 20mm siz
Get MoreDec 09, 2021· A preliminary study on the wear of the grinding media in the ore grinding process is carried in a planetary ball mill with the particle wear model The simulation results shows that the distribution range of the media wear rate increases with the speed of equipment rotation, and the wear rate of small size media is faster than that of large size
Get MoreDec 08, 2009· Re: how to estimate the wear rate for Ball mill Most practical way to by measuring empty height and calculating the % volumetric filling of grinding mediaAlternative way to make track of mill main drive kW consumption reduction and add makeup charge according to the extent of fall in power consumption
Get MoreMar 01, 1986· Both figures correspond to a 37 m by 29 m overflow ball mill with 476 t of ball hold-up with a feed rate of fresh ore of 121 t/h, a wear rate of (CURVE 1 I I I CURVE 7 5'600 ~ I Z o 500 i 7 Z 200 I I I I I I I I 1
Get MoreJul 01, 2016· Iwasaki et al proposed a corrosion model for the grinding media, involving two types of galvanic cells, as shown in Fig 3In the differential abrasion cell, the abraded surface acts as an anode, whereas the un-abraded surface acts as a cathode, and the corresponding corrosion reactions are iron oxidation in the first area and oxygen reduction in the second
Get MoreJul 01, 2017· In the large ball mill, however, the wear rate increased about 10 tim Apparently the larger mill produced impacts sufficient to remove the passivated film, thereby allowing an erosion-corrosion synergism The data show that the large ball mill should give a more accurate correlation with industrial wet-grinding mills
Get Morewear, with insignificant levels of impact wear due to the small 25 – 60 mm diameters They experience 25 – 40% less wear than in primary grinding ,
Get Moreore mill wet ball mill media wear rate ore mill wet ball mill media wear rate How Ball Mills Work (Engineering and Mining)YouTube Jun 20 2019 For both wet and dry ball mills the ball mill is charged to approximately 33 with balls (range 30-45 ) Pulp (crushed ore and water) fills another 15 of the drum s volume so that the total
Get MoreCement Mill Grinding Media Wear Rate In the industries of cement, refractory, fertilizer and glass ceramics, etc, a ball mill is used for dry and wet grinding of various ore and any grindable materials Godsend Mining Machinery Specializing in the production of jaw crusher, sand machine, ball mill, Raymond mill, cement equipment and other
Get More