Work Index. Bond estimated the amount of wear in terms of kilograms per kWh based on the abrasion index, A;,, Wet Ball Mill = kg kWh = (A ) ; ... Wet Ball Mill Power Draw (Bond) For wet ball mills, Bond expressed power draw as a .
In the past 20 years, the energyefficient comminution technologies, including high pressure grinding rolls (HPGR) and high speed stirred mill, have been developed and adopted in the hardrock mining operation in order to reduce the energy consumption and improve the process performance. The combination of HPGR and stirred mill in a single flowsheet without tumbling .
Where Wi is the work index, W is the work input (motor output) and F and P are the 80% passing sizes of the feed and product respectively, in micrometers. This relationship between feed and product energies and the calculation by difference of the required grinding energy is the basis for the two Bond Rod and Ball Mill Work Index Tests. Both were
1. Bonds work index is the work required to reduce unit weight from a theoretical infinite sie to 80 passing 100m. 2. This theory is useful for rough mill siing. 3. The work index is useful for comparing efficiency of milling operations 23. Kicks Theory 24.
A quick method for Bond work index approximate value determination. D. Todorović, Maja Trumić, L. Andric, V. Milošević, Milan Ž. Trumić. Materials Science. 2016. 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 ...
bond ball mill work index database jktech:/575JKTech CMC ...+ Bond Ball Work Index ...(2) SCATS STOCKPILE SAG MILL BELT FEEDERS CV... Appendix B1 Bond Work Index Test Procedure for ... bond work index ball mill design and safety factors. Bond Ball Mill Work Index. The EDEMET Bond Mill is designed to perform the Bond ball mill ...
determines the Bond Ball Mill Work Index used to determine net power requirements when sizing ball mills. The test is a closedcircuit, dry grindability test. It is run in a standard ball mill and can be performed at mesh sizes ranging from 48 mesh to 400 mesh. Bond Ball Mill Work Index (and modified Bond Work Index) data can be used in the ...
bond ball mill work index database jktech. bond work index ball mill ... Table Testwork Samples 57 Table Bond Index Determination 60... Figure Drillhole Loions by Drilling Type ... bond method for ball mill work index test – SAM Machine.
04/12/2020 · The laboratory procedure for running a Bond ball mill work index test requires that the operator choose a closing screen sieve size. The instruction is to choose a sieve size that results in the ...
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) WiRM Bond Rod Mill Test Work Index (kWh/t) WiSTD Standard Circuit Bond Work Index (expected or designed) used for circuit design. Specific energy requirement at ...
Hardgrove Grindability Asindex Mill Equipment. Bond Ball Mill Work Index Hardness Jktech. Bond Ball Mill Grindability The sample was crushed to 100 passing 6 mesh () from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill. Correction of Bond Ball Mill Work Index Test for Closing.
Gold Ore Crushing Work Index. Bond ball mill index test jktech a bond ball mill work index may also be used in the simulation and optimisation of existing mills and the associated grinding circuits sample requirements a minimum of 10 kg of material crushed to nominally minus 10 mm is preferred jktech would stage crush the sample to minus 335 mm as required for the bond ball .
Read more. bond ball mill work index database jktech. Get Price. An Overview Of the SmAllScAle teStS AvAilAble tO. world. It shows that the ball mill work index is normally distributed with an average of and a median of kWh/t. bOnd rOd mill GrindAbility The Bond Rod Mill Grindability Test is performed similarly to the ball mill test ...
The reason for this variation in ball mill work index is because the ore at Mt. Milligan has an intrinsic exponent of – in the 100 µm to 200 µm size range, not the – exponent empirically measured by F. Bond. The work index increase between 100 µm and 76 µm is due to a porphyritic grain size that causes a spike in energy
GTEK Bond Ball Mill Work Index is used for determine the grindability of materials, and help to choose the most suitable type and model of grinding equipment. Ask For Quote Donwload Find more details in the options below.
21 CONCLUSIONS Continued In the present work, equations were also derived, giving: zthe ballmill power drawP as a function of its dimensions: internal mill diameter D and length L, zthe ballmill power drawP as a function of the feed D f (mm) and the product size d (mm), the Bond work index w i (kWh/short ton) and the mill throughput T (short ton/h), zthe ballmill .
2. Methods for assessing the energy consumption of the Bond Ball Mill are discussed 3. The average reduction in Work Index of HPGR products was kWh/t 4. A similar magnitude of reduction was observed in the Size Specific Energy 5. Ball milling efficiency can vary significantly independently of HPGR operation Graphical Abstract