design to specify a feed and product size plus a hardness index to produce a specific energy value kWh/t , submitted to the Bond ball mill work index test The number of SAG mill revolutions required to grind the , EF4 and EF5 factors for ball milling Rowland, 1982...**Know More**

Since for the ball mill design we are using 80 passing, the required value of C2 for the ball mill will be equal to120 C3 is the correction factor for mill diameter and is given as πΆπΆ3 = 244 π·π· 02 3 However, it is important to note that C3 =0914 vessel used in ,...**Know More**

Bond Work Index Procedure and Method...**Know More**

The work index of a particular material is determined in the laboratory by conducting the standard Bond grindability test Bond developed separate tests for the rod mill and the ball mill The simplified test method described in this paper is an alternative procedure to the ball mill grindability test...**Know More**

The ability to simulate the Bond work index test also allows examination of truncated ball mill feed size distributions on the work index For grinding circuits where the feed to a ball mill is sent directly to the classifier and the cyclone underflow feeds the ball mill see Figure 310 , a question arises as to whether this practice will alter the ball mill work index BW i of the ,...**Know More**

Jul 15, 2013 0183 32 See this useful summary Table of Bond Work Index by Minerals For any circuit, whether a crushing circuit, a rod mill, or a closed ball mill circuit, the Work Index always means the equivalent amount of energy to reduce one ,...**Know More**

WiBM Bond Ball Mill Test Work Index kWh/t Wic Bond Impact Crushing Test Work Index kWh/t WioACT Actual Operating Bond Work Index determined from measurements on the circuit kWh/t , ing design inefficiency factors into the reference Bond Stan-dard Circuit, assume 244 m diameter overflow mills, and ....**Know More**

the work index depending on the grind size In this way, work index values are usually obtained for some specific grind size that characterizes the grinding operation to design or under evaluation This study was carried out in a standard bond ball mill 305 mm x 305 mm size...**Know More**

Bond Ball Mill Work Index, BWi, kWh/t 134 Bond Rod Mill Work Index, RWi, kWh/t 181 Table 1 Example of AG/SAG Ball Mill Circuit Wio Calculations 1 2 ABstrAct Optimum use of power in grinding, both in terms of grinding efficiency and ,...**Know More**

Dec 12, 2016 0183 32 The basic parameters used in ball mill design power calculations , rod mill or any tumbling mill sizing are material to be ground, characteristics, Bond Work Index, bulk density, specific ....**Know More**