CORRELATION BETWEEN BOND WORK INDEX AND .The Bond's standard ball mill is used to determine the work index value of differ ent samples. The Bond work index is defined as the kilowatt-hours per short ton required to break from infinite size to a product size of 80% passing 100 µm. If the breakage characteristics of a material remain constant over all size ranges, the calcul ated work
Determining the Bond work index is a standardized method for characterizing the comminution performance of mineral samples. CEMTEC uses this method for designing rod and ball mills. The comminution performance is, just like the desired comminution step and the production capacity, crucial for determining the required mill size.
A ball mill is a type of grinder used to grind, blend and sometimes for mixing of materials for use in mineral dressing processes, paints, pyrotechnics, ceramics, and selective laser sintering.It works on the principle of impact and attrition: size reduction is done by impact as the balls drop from near the top of the shell. A ball mill consists of a hollow cylindrical shell rotati
O. I. SKARIN N. O. TIKHONOV CALCULATION OF THE .10 mm), the crushing work index SWI is applicable; for me-dium size particles (from 100 mm to 2100 μm) — rod milling work index RWI; for finer particles — ball milling work index BWI (Table). These indexes are readily obtained using the special-purpose laboratory equipment (Fig. 1). Finding the total specific energy consumptionball mill bond work index for limestoneWet grinding ball mills for the treatment of minerals, ores and other bulk .... The Bond formular yields the work required to reduce a material, of known. WI, from ... WORK INDEX CURVES (FEED OR PRODUCT), 80% PASSING. 1.0 ... Lizenithne. Get Price
Rock Characteristics and Ball Mill Energy Requirements at ...screened and the index determined from the size analysis curves. 2.5 Work Index Determination The as-received samples were prepared to all passing 3.35 mm. The -106 µm particles were also removed and analysis was conducted on the -3.35 mm + 106 µm material. The tests were performed in a standard Bond ball mill with weight of material
Model:Bond-Rowland SSBM - SAGMILLING.COMBond ball mill work index; Bond rod mill work index; Bond crushing (low-energy impact) work index; Formulae. Rowland, 2006. where CF is an optional calibration factor, use 1.0 for normal situations. The rod mill oversize feed factor (EF 4 RM) is calculated using the greater of the sample's rod mill or crushing work index (which is usually the ...
Operating work index is not the specific energy consumptionOct 24, 2018· The work index can either be measured in the laboratory (the Bond ball mill work index determination is a common example) or it can be calculated from the operating performance of a milling ...
Work Index Curve For Ball Mill. Work index curve for ball mill work index curve for ball mill procedure for determination of ball bond work index in the scribd it provides the bond ball mill work index which expresses the resistance of material to ball milling introduction a bond ball mill work index test is a standard test for determining the ball(PDF) A quick method for bond work index approximate value ...The Bond work index is a measure of ore resistance to crushing and grinding and is determined using the Bond grindability test. Its value constitutes ore characteristic and is used for industrial ...A Method of C alculating Autogenous/ Semi-Autogenous ...ball mill work index was averaging only 11.6 kWh/t, which is not hard. A rod mill work index ﬁ gure was not found but was thought to be in the 16 kWh/t to 18 kWh/t range. The Xstrata Zinc 22 ft ID × 40 ft EGL over ow ball mill ﬂ was installed at Mt Isa in 2009. This mill was put into singleKinetic grinding test approach to estimate the ball mill ...Kinetic grinding test approach to estimate the ball mill work index 345 Kinetic grinding Exactly 700 cm3 of passing 3.35 mm material from each sample was progressively grounded in periods of 0.33, 1, 2, 4, and 8 minutes. Our experience has shown that the required number of revolutions to achieve the circulating load of 250% ...