Determination Bond Work Index Of Iron Ore
A higher Bond work index value was found for the BHJ ore (15.4 kWh/ton) than for the BHQ ore (12.4 kWh/ton). A decrease in the product particle size was associated with an increase in the work index value.
A higher Bond work index value was found for the BHJ ore (15.4 kWh/ton) than for the BHQ ore (12.4 kWh/ton). A decrease in the product particle size was associated with an increase in the work index value.
A Bond rod mill work index test (BRMWI) is a standard test for determining the rod mill work index of an ore sample [21]. The BRMWI is a measure of the …
When Erf/Erp is greater than 1.29, the work index increases as the product size decreases, and when Erf/Erp is less than 1.29 the work index decreases. Eq. (8) suggests that a standard work index Wi100, …
determination of the work index of BirninGwari iron ore in Nigeria. - A reference ore is ground for a certain time period and the power consumption recorded. An identical weight of the test ore is then ground for a length of time such that the power consumed is identical with that of the reference ore. Equation 1 gives the work index of the ...
Bond index is useful in designing of grinding system in mineral processing. In this study, the Bond work index of Birnin- Gwari iron ore in northern Nigeria is determined using modified Bond's method using 'reference …
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. [table "" not found /] Source 1: Table of materials reported by Fred Bond. Source …
In this study, the mineralogical, chemical characterization and physical properties of Sudanese iron ore in west of Omdurman city were studied using microscopic investigations, X-ray Diffraction analysis (XRD), X-ray Fluorescence (XRF) analysis,
The Bond's equation was then used to calculate the work index of the Muro iron ore which was found to be 24.84 kWh/ t when marble was used as reference ore and 27.41 kWh/ t when granite was used as reference …
Compare and Understand Rod/Ball/Impact-Crushing/Abrasion BOND Work Index
The Bond work index for B and C type iron ore sample are of 11 and 10 KWhmt. The variation of BWI of three iron ore sample may be varied during the geological formation of each iron ore sample. The output product of three iron ore sample composed of three different sie fractions when ground in Bonds ball mill.
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. The output product of …
It is a well-known fact that the value of the Bond work index (wi) for a given ore varies along with the grinding size. In this study, a variability bysis is carried out with the Bond standard grindability tests on different critical metal ores (W, Ta), ranging from coarse grinding (rod mills) to fine grinding (ball mills). The relationship between wi and grinding …
A Bond Ball Mill Work Index test is a standard test for determining the ball mill work index of a sample of ore. It was developed by Fred Bond in 1952 and …
Bond Work Index Crusher – Grinding Mill China. how to bond index in rock crusher « iron ore crusher equipment. how to bond index in rock crusher Description : bond crushing energy and fracture … – saimm crushing energy and work done by …
The Barratt form of this "faith" is calibrated principally to porphyry deposits, but I am also using it on iron deposits and think it works well there, too. Avoid doing Bond work index tests at Australian labs as their geometry of work index rod mills is different from the geometry at the labs listed above.
Determination of Bond index of Birnin- Gwari Iron Ore in Nigeria. Bond work index of Birnin- Gwari iron ore in northern Nigeria is determined using modified Bond's method using 'reference ore'.Samples of iron ore were sourced … » Free online chat! bond work index of hematite iron ore Ethiopia. magnetite – what you may not know – Carpentaria …
Bond index is useful in designing of grinding system in mineral processing. In this study, the Bond work index of a low grade iron ore is determined using modified Bond's method. Samples of iron ore were sourced using random method. Iron ore of known weight were ground using the laboratory ball mill grinding machine. 80% passing …
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 ...
Baltic Dry Index: This index is issued by the Londonbased Baltic Exchange and is reported globally as a proxy for the price of moving major raw materials by sea. The index includes three key shipping sizes across 23 different global shipping routes carrying coal, iron ore, grains, and other commodities. WhatsApp
The Bond work index of the five iron ore fines samples investigated ranged from 10 to 15 kW·h/t, indicating good grindability and they can all be considered as materials that are relatively easy to grind. The static settling performance of the three Australian iron ore fines studied in this article was poorer than that of the Brazilian iron ...
20.39 Kwh/short ton was selected as it is within the range indicated by previous research work on iron ore in Nigeria. Keywords: Bond index, Birnin-Gwari iron ore, modified, reference minerals, mineral processing. 1. INTRODUCTION Iron ore deposits are usually present as iron oxides (magnetite, Fe3O4; haematite, Fe2O3),
It is a well-known fact that the value of the Bond work index (wi) for a given ore varies along with the grinding size. In this study, a variability bysis is carried out with the Bond standard grindability tests …
(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. The work indices of the Goa ore, the Indian ore and the Kiriburu ore are 17-11 and these ores are medium hard.
The reason for this variation in ball mill work index is because the ore at Mt. Milligan has an intrinsic exponent of –0.45 in the 100 µm to 200 µm size range, not the –0.50 …
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In this study, the Bond work index of Birnin- Gwari iron ore in northern Nigeria is determined using modified Bond's method using 'reference ore'. Samples of iron ore were sourced using random method, reference minerals; marble and granite of known weight and iron ore of known weight were ground using the laboratory ball mill grinding ...
Bond Work Index Formula-Equation. Jul 15, 2013· The standard work index Wi100 values calculated from Eq. (9) for each ore at each mesh size are included in Table I. Comparison for each ore shows a reasonable agreement among the tests made at various mesh sizes, and indicates that Eq. ...
Effect of magnetite content on Bond work index and preconditioning: Case study on Chadormalu iron ore mine
Table 4 shows the Bond work indices for some minerals and industrial materials from [25]. Note that the real circuit mills present work indices greater than those in laboratory …
Bond work index is an index to evaluate the difficulty of ore grinding. The theoretical basis of Bond work index to measure ore grindability is Bond's ore crushing crack theory [24,25,26]. According to the standard Bond test requirements, the bond work index test of raw materials and pre-enriched adopted a Φ305 × 305 mm standard work …
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