Impact Work Index Procedure - 911 MetallurgistMar 17, 2017 . This is or was used by to acquire the Impact (AKA Crushing) Work Index for sizing crushers. Use this in complement to the Bond Crushing Work Index Procedure. Impact Work Index Procedure. Another Summary Table of various Impact Work Index by Rock or Mineral Type (/metric tonne). Impact.working index for crushing rocks,Compare and Understand Rod/Ball/Impact-Crushing/Abrasion .Rarely is there a relationship between the Bond ball mill work index and the Bond crushing (impact) work index. . test is measuring the abrasion strength of the matrix of a rock and the attrition resistance of individual grains within the rock).
Ore Feed Size * Work Index Hardness: Crushing & Mill TonnageMar 17, 2017 . The single most common reason for an increase or drop in the production of fines is the WORK INDEX of the ore. If you remember, the work index of the ore is a method of measuring the degree of hardness. As the ore becomes harder the fracture lines in the rock become cleaner or sharper with less.working index for crushing rocks,correlation between bond work index and . - Assiut Universitycorrelation between the abrasion value(X2) and work index (Wi) is found to be Wi = -1.8 Ln (X2) + 11.5 with correlation coefficient of 0.80. KEYWORDS: Bond work index – Mechanical properties of rocks –. Grinding energy- Crushing resistance. 1- INTRODUCTION. Comminution in a mineral processing plant, or mill,.John Frank
the Bond index. There is considerable difference between Bond crushing energy and work done by the jaw crusher for rocks. It appears that the Bond approach is not a suitable method for predicting single particle fracture energy done by the crusher. To verify the results obtained from DEM models, the fracture behaviour.
Nov 15, 2014 . Kick's "law" gives good results for crushing, Bond's for grinding and Rittinger's for fine grinding. Based on a large number of tests, Bond introduced a working index or comminution parameter that represents the resistance of the material to crushing and grinding. Characterization of rocks for selection of.
May 15, 2017 . The hammers are set to fall again from a higher drop position to input enough energy to break the rock. This is done 10 times to obtain 10 breaks and the WI (kWh/t) = 53.49 x Impact Crushing Strength / Specific Gravity of the sample. ** jktech. Find a referential Rod Mill Work Index Table here.
Mar 17, 2017 . This is or was used by to acquire the Impact (AKA Crushing) Work Index for sizing crushers. Use this in complement to the Bond Crushing Work Index Procedure. Impact Work Index Procedure. Another Summary Table of various Impact Work Index by Rock or Mineral Type (/metric tonne). Impact.
Mar 17, 2017 . The single most common reason for an increase or drop in the production of fines is the WORK INDEX of the ore. If you remember, the work index of the ore is a method of measuring the degree of hardness. As the ore becomes harder the fracture lines in the rock become cleaner or sharper with less.
correlation between the abrasion value(X2) and work index (Wi) is found to be Wi = -1.8 Ln (X2) + 11.5 with correlation coefficient of 0.80. KEYWORDS: Bond work index – Mechanical properties of rocks –. Grinding energy- Crushing resistance. 1- INTRODUCTION. Comminution in a mineral processing plant, or mill,.
how to bond index in rock crusher - jspfoundation. Bond Crusher Work Index aakarassociates. how to bond index in rock crusher. bond work index for an ultrafine mill ZENIT, mobile crusher for crushing stone, rock. Get More Info. image. line bond work index - BINQ Mining. Apr 17, 2013 · > Mining News.
For instance rock crushing or grinding to produce uniform aggregate size for construction purposes, or separation of rock, soil or aggregate material for the purposes of structural fill or land reclamation activities. Aggregate milling processes are also used to remove or separate contamination or moisture from aggregate or.
It has been an established fact that comminution processes, crushing and grinding, are most energy intensive processes which account for more than half of the total .. Due to change in mineralogy, there is 70% reduction of work index of MC ore whereas 65% reduction of work index of MCZ ore after 90 s of exposure to.
1. Six different types of rock samples associated in bauxite mine waste. 2.1 Bond's Work Index. Representative samples were prepared separately by stage crushing to all passing a 6 mesh sieve. The weight of 700 cc sample was placed in the mill. The grinding conditions are given below. a) Gibbsitic. (Feldspar rich) rock.
In the rock crushing room, rocks are crushed and powdered using a variety of tools. Jaw Crusher. Mill for crushing rocks and preparation of mineral separates. table for separation of heavy mineral concentrates. Sieve machine. Disk mill for rock powders. Agate vessels for disk mill.
Jan 16, 2017 . Heavy duty crushing applications of hard-to-break, high Work Index rocks do prefer double-toggle jaw crushers as they are heavier in fabrication. A double-toggle jaw crusher outweighs the single-toggle by a factor of 2X and well as cost more in capital for the same duty. To perform its trade-off evaluation,.
Sep 11, 2015 . The type of crushing or grinding method also impacts the way in which the rock is broken during .. The power or energy required is the sum of the work required to crush or grind the rock as well as rotate the mill. . To compute the power consumption of gyratory crushers, knowledge of the ore work index.
Nov 18, 2016 . s.911metallurgist/equipment/crushing/ This small rock crusher has a jaw opening of 2" x 3" and lets you crush to under 20 mesh.
Mar 22, 2017 . characteristics of the minerals (rock/ore) moving into the circuit. The key parameters we need are the. “crushability or grindability”, also called work index and the “wear profile”, called abrasion index. 4.0 Crushing of rock and minerals: Crushing is the largest process operation in minerals processing.
The rock crushing process was conducted a quantitative de- scription. Wang Li et al.  proposed the methods to establish a damage model according to the ... crushing index. The evaluation indexes of an average particle size, the yield below 8mm and the broken rate are con- trasted according to the different rock fractal.
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TABLE I BLASTS AT CHRISTMAS MINE (Available in full paper) The energy required to break rock by blasting can be evaluated on the same basis as that required in crushing, provided that the necessary information is available. This includes: the tons of.
The theoretical values of power are computed using Bond's law for line that has a working index of 11.4 kWhr/ton hence it is expected that if the crusher will be used for hard granite rocks which have a working index of 14.15 kWhr/ton the power requirement shall increase by 20% giving a maxi- mum power of 2.7 kW at.