index of work for crushing iron ore

Jun 19, 2015 This Table of Ball Mill Bond Work Index of Minerals is a summary as tested on ‘around the world sample’. You can find the SG of each mineral samples on the other table. Source 1

It is a measurement of how hard the rock is and an expression of the resistance that a material has to crusher. Shown in the table below is typical Work Index, reflecting the different rock characteristics. It shows for example, that their is more energy required to crush Basalt then Iron Ore

Jul 15, 2013 Jul 15, 2013 The work index Wi can be determined from plant operations and from laboratory ball mill grindability, rod mill grindability, and impact crushing tests. The laboratory test results are used to check the efficiency of commercial operations and to compute the proper machine sizes for new installations

The bond work index test obtained high work index 52.60 kw.h/t and consumed power 11.72 kw.h/t to grind one ton of low grade iron ore and this attributed to the high concentration and hardness of

The Bond work index is not solely a material constant but is influenced by the grinding conditions. For example, the finer the grind size desired, the higher is the kWh/t required to grind to that size. Magdalinovic [38] measured the Bond work index of three ore types using different test screen sizes. He produced a correlation between the mass of test screen undersize per revolution, G, and

work index, the concept of this method depended on the use of a reference ore of known work index[7]. Iron ore is one of the important industrial minerals used in steel industrials. Magnetite, hematite and goethite are considered the most common minerals of iron ore which have cubic, hexagonal (trigonal) and

bonds crushing law and work index. Values of Bond crushing work index will vary from a 8 kWh/t for laterite hardcap through to 22 kWh/t for banded iron formation to 46 kWh/t for fresh greenstone. Fred Chester Bond , the free encyclopedia Fred Chester Bond (June 10, 1899 January 23, 1977) was an American mining engineer

The key factor to design size reduction units such as crushers and grinding mills, is ore’s work index. The work index, wi, presents the ore grindability, and is used in Bond formula to

Jul 01, 2013 grindability work index for iron ore. ... 50-500t/h capacity stone crush machine 50-500t/h capacity stone crush machine prices 50-500t/h capacity stone crush machine prices in pakistan Concrete crushing and recycling equipment Concrete crushing and recycling equipment for sale Concrete crushing and recycling equipment for sale in Singapore

Jan 01, 2016 The ore work index is then calculated using the Bond formula (Equation ). This method reduces the time of measurement and where the ore is homogeneous, gives work index values within 7% of the Bond method. ... The average size analysis of an iron ore after preliminary crushing showed a P 80 value of 1173 μm. This was fed to a wet rod mill

index of work for crushing iron ore - BINQ Mining. Work Index and Grinding Energy Assessment of Dilband – Mehran … Austria was used for calculating work index of Dilband iron ore. The grinding tests … Read more

Samarco Mineracao S.A. (Samarco) is a non-operated joint venture iron ore operation. BHP Billiton Brasil and Vale each hold a 50% shareholding in Samarco. Following the Fund o dam failure in 2015, operations at the iron ore operation have resumed without the need of tailings dams and with a new, safer filtration system

Crushing plant flowsheet The mined ore contained 50% minus 10mm material. Given the Crushing Work and Abrasion Indexes, the ore was considered to be not difficult to crush and not overly abrasive The product from the surface mining did not require primary crushing. The ore was loaded into an apron feeder and fed to vibrating screens

Two blasting tests (Bond, 1954) on Taconite iron ore in Minnesota five years ago gave work index values of 14.5 and 13.5, or an average of 14.0, which compares with 14.7 recently obtained in crushing this ore

The most widely used parameter to measure ore grindability is the Bond work index, W i [6]. Work index is the energy required in kWh/short-ton to reduce a given material from theoretically infinite size to 80% passing size, 100 microns [7]. The determination of work index using Bond’s method can be compared to the method of