Sag Mill And Ratio Of Bond Ball And Rod Work Index

Ball mill design requires a Bond work index, BWi, for ball mills at the correct passing size; SAG mill design requires an appropriate SAG test, for example, SPI (Chapter 5). Flotation design needs a valid measure of kinetics for each sample, including the maximum attainable recovery and rate constants for each mineral ( Chapter 12 ).

Bond ball mill work index: Figure 2: Ball mill for determining Bond ball mill work index 1 For the purists, there were two models in existence at the time: the Von Rittinger and Kick models. Neither of these gave results that matched the observations …

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 density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum 'chunk size', product size as P80 and maximum and finally the type …

Sag mill and ratio of bond ball and rod work index Ball mill design requires a bond work index, bwi, for ball mills at the correct passing size; sag mill design requires an appropriate sag test, for example, spi (chapter 5)Flotation design needs a valid measure of kinetics for each sample, including the maximum attainable recovery and rate constants for each mineral …

Ball Mill DesignPower Calculation - 911 Metallurgist. 19062015 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 density desired mill tonnage capacity DTPH operating solids or pulp density feed size as F80 and maximum chunk size product size .

Comparison of UCS to Bond Work Indices. FIGURE 8: ROD MILL/BALL MILL WORK INDEX RATIO v. UNCONFINED COMPRESSIVE STRENGTH 100 200 300 400 UCS (MPa) 0 0.5 1 1.5 2 WiRM/WiBM (metric) Siddall et al (1996) identified the ratio of Bond rod mill Work Index and ball mill Work Index as being indicative of an ore's compentency.

Sag Mill And Ratio Of Bond Ball And Rod Work Index. FOB Reference Price:Get Latest Price. 2016110EURASIAN MINING 1. 2015 Technology and technics of ore preparation processes 7 feed for the rod mill i.e. 10000 m in accordance with Table. The value of P 80 is accepted based on the required grainsie characteristics of the ball mill discharge.

Ball Mill Wio BWio 8.6 Circuit Wio OWio 14.6 Bond Ball Mill Work Index BWi kWh/t 13.4 Bond Rod Mill Work Index RWi kWh/t 18.1 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 use of installed capital can have a large effect on .

A Bond Ball Mill Work Index may also be used in the simulation and optimisation of existing mill(s) and the associated grinding circuit(s). Sample requirements: A minimum of 8 kg of material crushed to nominally minus 10 mm is preferred. JKTech would stage crush the sample to minus 3.35 mm, as required for the Bond Ball Mill Work Index test feed.

the final product size. The prediction of the SAG mill transfer size used in the formula is made by comparison with pilotplant data and operating plant data for similar ore types (Barratt, 1989). The approach acknowledges grinding efficiency as the ratio of operating work index to that for a single-stage ball mill.

Bond Ball Mill Work Index Grindability Tests Sag Mill And Ratio Of Bond Ball And Rod Work Index China. 05 18 32 This video was put together by Joshua Wright and Aldo Vasquerizo as a supplemental lecture for University of Nevada Reno If you have any questions need advice or need to conduct a Sag Mill And Ratio Of Bond Ball And Rod Work Index Mill grinding …

using Bond rod mill work index (RMWI), and Bond ball mill work index (BMWI). However, the author has developed a relationship between the Bond third theory SE values and the AG/SAG SE values to enable the additional power required for AG/SAG milling to be determined. AG/SAG inef ciency varies according to the transfer size fi

sag mill and ratio of bond ball and rod work index. The apparent difference between ball mill and AGSAG mill efficiency is an artefact of Bond's implicit assumption that the particle size distributions can be defined by one point the 80 passing size In fact Bond noted that this convenient assumption was valid only in cases where the cumulative particle size distributions …

sag mill and ratio of bond ball and rod work index. ... The Bond ball mill work index is one of the most commonly used grindability tests in mining and is often referred to as the Bond work index The test is a locked-cycle test where ground product is removed from test cycles and replaced by fresh feed...

Bond Ball Mill Work Index, BWi, kWh/t 13.4 Bond Rod Mill Work Index, RWi, kWh/t 18.1 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 use of installed capital, can have

Sag Mill And Ratio Of Bond Ball And Rod Work Index. Mill (grinding) - Wikipedia, the free encyclopedia. ... and a standard Bond Ball Mill Work Index test (BWi) on SAG ground ore.sag mill grinding design versus ... how to grind fly ash in ball mil; rod liner ball ... Comminution Laboratory Services - MINTEK.

FIGURE 8: ROD MILL/BALL MILL WORK INDEX RATIO v. UNCONFINED COMPRESSIVE STRENGTH 100 200 300 400 UCS (MPa) 0 0.5 1 1.5 2 WiRM/WiBM (metric) Siddall et al (1996) identified the ratio of Bond rod mill Work Index and ball mill Work Index as being indicative of an ore's compentency. Figure 8 plots this ratio versus UCS; no trend is apparent ...

Model:Bond/Barratt SAB Model. The SAG mill specific energy, The resultant operating work index of the ball mill will vary according to the ratio of the ball mill, rod, Bond ball mill work.

AG/SAG Wio, AWio (kWh/t) 28.5 Ball Mill Wio, BWio 8.6 Circuit Wio, OWio 14.6 Bond Ball Mill Work Index, BWi, kWh/t 13.4 Bond Rod Mill Work Index, RWi, kWh/t 18.1 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 use of installed capital, can have

SAG mill vs Ball mill Crushing ratio The biggest characteristic of the sag mill is that the crushing ratio is large. The particle size of the materials to be ground is 300 ~ 400mm, sometimes even larger, and the minimum particle size …

Ball mill design requires a Bond work index BWi for ball mills at the correct passing size; SAG mill design requires an appropriate SAG test for example SPI Chapter 5. Flotation design needs a valid measure of kinetics for each sample including the maximum attainable recovery and rate constants for each mineral Chapter 12.

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 ton of the ore from a very large size to 100 um. The sample was received crushed appropriately for the ball mill test.

The Bond rod mill work index is used to calculate the power requirement at intermediate size, i.e. from 12.5mm to about 1mm. The test has been mainly used for the design of rod mills or primary ball mills, but it can also be used along with the other Bond tests (BWI and cWI) for SAG mill design using semiempirical relationship [6]. BOND LOW ...

Selection of Comminution Circuits for Improved, Nov 1,, as that determined by Bond formulae adapted by Rowland (Rowland ) From a business, three stage crush, rod and ball mill, eg Renison Bell Tin Mine, reduction ration in crushing More complex crushing and screening Lack of, The operating work index of the SAG mill actually increased with.