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grindability work index for iron ore

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

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bond work index - an overview | sciencedirect topics

The ball mill work index laboratory test is conducted by grinding an ore sample prepared to 100% passing 3.36 mm (6 mesh) to product size in the range of 45-150 µm (325-100 mesh), thus determining the ball mill work index (Wi B or BWi). The work index calculations across a narrow size range are conducted using the appropriate laboratory work index determination for the material size of interest, or by …

iron ore grindability test | prominer (shanghai) mining

and work index of Itakpe iron ore were found to be approximately 0.92g/rev and 13.45kwh/tonne respectively. ... estimate Bond grindability from batch-test. Get Price

grindability work index for iron ore

Bond work index of Birnin- Gwari iron ore in northern Nigeria is determined . most widely used parameter to measure ore grindability is the Bond work index, Wi. Read More Study on the Selection of Comminution Circuits for a Magnetite Ore

bond work index formula-equation

Jul 15, 2013 · The work index values from rod mill grindability tests are corrected for exposure ratio variations to 80% passing 1000 microns by the following equation: Wi1000 = WiP + (1000 – P)(.0060 – .0055 Erf/Erp)……………………………………………………..(11) and the rod mill grindability work index at any product size P is found from:

grindibility index for iron ore - musikschule bad drrheim

Grindability index iron ore grindability work index for iron ore crusher south africa ammtec the rod mill grindability grp is the average of the typical values of bond ball mill work index for soft oxidised ore bodies ferric iron can further 187 more detailed more detail improved grindability …

(pdf) rapid determination of bond rod-mill work index by

Shahsavari, Procedure for determination of Bond ball work The grindability experiments was carried out on the four typical index in the commercial operations, Min. Eng. 22 (2009) 104–106. samples of copper, lead–zinc, manganese and iron ore in specified [13] L. Tavares, R. Carvalho, J. Guerrero, Simulating the Bond rod-mill grindability time periods in order to model the standard Bond rod-mill test

bond tests | sgs

Modbond Grindability Test. Similar to a Comparative Work Index, this test is an open circuit dry batch grindability test run in the standard Bond Ball Mill for a set time. It can be used at mesh sizes from 65 to 200 mesh (normally 100 mesh). The test requires calibration against the standard Bond Ball Mill Work Index test to estimate the Work

grindability work index for iron ore | worldcrushers

Jul 01, 2013 · Find current Indian scrap prices, iron & steel prices, cast iron scrap price, from Steelmint.com. Get latest updated of steel price index, price of iron ore for one … SGS – Hardgrove Grindability Index (HGI) – Mining

iron ore tumbles below $us210 a tonne

May 14, 2021 · Total imported iron ore stocks at China’s 45 ports under Mysteel’s weekly survey eased for the third week to a three-month low of 125.3 million tonnes by May 13, or down another 4.2 million

the work index of the iron ore

And thus, the grindability of the iron ores was investigated. The results obtained are as follows: (1) The work indices of the iron ores are ranged from 6.22 to 17.40. The work indices of the Santa Barbara ore, the Santa Fe ore and the Chile ore are greater than 17 and these ores are remarkably hard

investigation of iron ores based on the bond grindability

The result shows that the maximum Bond work index of 14 KWh/mt was obtained for `A' type iron ore sample. The Bond work index for `B' and `C' type iron ore sample are of 11 and 10 KWh/mt. The variation of BWI of three iron ore sample may be varied during the geological formation of each iron ore sample

crushability workindex for iron ore

Grindability Work Index For Iron Ore Grindability of iron ore chapter4 ishaque abroag pathanah mallah mehran , grindability of iron ore ,comminuting behavior of dilband iron ore and to compute the grinding energy requirement for production of ultrafine particles up to mesh of liberation in this regard standard grindability tests developed by the chair of mineral of the bonds

comparative analysis of grindability of iron-ore and

Jul 01, 2013 · The most widely used parameter for measuring the hardness and grindability of any ore (rock material) is its work index. The work index of an ore is its comminution parameter, expressed as the resistance of the ore to crushing and grinding and is numerically equal to the kilowatt hour per short tonne (KWHT) required to reduce the ore material from a theoretically infinite feed size to eighty …

nioshtic-2 publications search - 10010214 - influence of

The influence of reduction roasting and thermal shock on the grindability of a refractory low-grade Michigan iron ore was examined in bench-scale tests. The quantitative effects of the various treatments were evaluated at three sieve levels, 48, 100, and 400 mesh, with ball-mill-grindability and work-index parameters as response indicators

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