bond work index and grind size iron ore

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METALLURGICAL TEST RESULTS SELENGE IRON ORE PROJECT …

Jan 21, 2015· SELENGE IRON ORE PROJECT Haranga Resources Limited ("the Company") is pleased to announce the ... BWi-Bond Ball Mill Work Index (kWh/t) 19.4 19.9 5 Notes: ... An ERIEZ L8 magnetic separator was used in the scope of P80 75um and 125um in grinding size and mineralogy test work was conducted at non-magnetic fraction separated with the …

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The Influence of Crushing Modes on Grinding Speed and Ball ...

And the influence of crushing modes on grinding speed is gradually unconspicuous. ②The test of Bond ball grinding work index showed that when the particle size of the grinding product is larger than 0.10 mm, the crushing modes has a significant impact on the energy consumption of the grinding product, and the high pressure roller grinding ...

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(PDF) Comparative Analysis of Grindability of Iron-ore and ...

The results obtained show that weight retained varies from confirmed that particle size analysis using sieves is 36.71 g to 183.1 g for granite while that of iron‐ore vary from one of the oldest and most widely employed methods 9.65 g to 87.78 g. In addition, it was observed that granite today. As a result of comminuting iron ore and granite ...

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Size Reduction Equipment

•It is desired to crush 10 ton/hr of iron ore hematite. The size of the feed is such that 80% passes a 72.6 mm screen, and 80% of product a 3.175mm screen. Calculate the gross power requirement for wet grinding and dry grinding. Work index of Hematite is 12.68 [Ans 17.96kW]

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MINE 331 - Bond Work Index - ii MINE 331 Bond Work Index ...

1 Introduction Finding the bond work index of an ore type is crucial to determining the grinding energy required during comminution in a ball mill. The bond work index is a constant characteristic related to the hardness of a specific ore type. Bond work index is one of three different approaches that can be used to calculate the work index of an ore.

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AUTOGENOUS MILL FEED PREPARATION TO REDUCE UNIT …

xA Venezuela hard, low-grade iron-ore (hematite) with a standard 74-microns Bond work index of 13.7 (metric) Batch testing, process simulation, and a pilot plant were conducted on a magnetic taconite iron-ore in 2005. Compared with SAG mill grinding, autogenous grinding using feed prepared to include coarse, competent rock and

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How To Grinding Iron Ore - haagdeko.de

Grinding iron ore licture ore has a magnetite content of around 90 he bond work index w i of the ore is 9kw hthe second ore is from mertainen, a potential new mine, about 30 km away from kirunaickr discussing iron ore grinding machine in large dec 28, 2005 grinding is a powdering or pulverizing process using the rock mechanical forces of ...

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Determination of Work Index of Gyel-Bukuru Columbite 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

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The Six Main Steps of Iron Ore Processing | Multotec Canada

Mar 14, 2018· This step involves the material being retained inside the mill for a specific time (with or without grinding balls) which is calculated by applying Bond's work index to the process calculation. This index takes into account the material ore hardness and feed size, mill speed, material recirculation, desired fineness, etc.

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Investigation of iron ores based on the bond grindability ...

Jan 10, 2020· 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.

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Procedure For Determination of Ball Bond Work Index in The ...

17. The work index (Wi) is derived from the Bond formula. The work index (Wi) has been obtained for the sample of iron and copper ore following both the standard Bond procedure and the abbreviated procedure as described in this paper. The results are given in Table 1.

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First choice for HPGR technology and service

Bond work index reduction In applications where the HPGR is followed by ball milling, the induced micro fractures generally result in a reduction of the Bond Work Index. For most ores this reduction ranges between 10-25%. Obviously this allows for grinding at either an increased throughput rate, at a reduced power input, or

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Effect of magnetite content on Bond work index and ...

DOI: 10.1007/S11771-018-3784-X Corpus ID: 139575883. Effect of magnetite content on Bond work index and preconditioning: Case study on Chadormalu iron ore mine @article{Shad2018EffectOM, title={Effect of magnetite content on Bond work index and preconditioning: Case study on Chadormalu iron ore mine}, author={Hossein Inanloo Arabi …

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Determination of Bond Work Index of Lucky Cement …

work index (W i) having a different samples of limestone in-cluding Face-2B, Face-4A, Face-4B, Face-5A, Face-5B, Face-6A and Face-6B were collected from Lucky Cement Limited. These samples analyzed for Bond work index. Work index results show that all samples falls under the cate-gory of HARD ROCK except Face-4A (W i <20kwh/t). Limes-

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iron ore fines 100 mesh equal to mm

bond grinding work sindex of indian iron ore amuze-muziek bond grinding work sindex of indian iron ore. Our business covers more than 100 countries and regions around the world, many famous companies choose us, we have won praises from customers with products and services. mineral grinding equal . mineral grinding equal mineral grinding equal A ...

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ON THE DESIGN OF BALL MILLS FOR GRINDING ITABIRITE …

Key words: Grinding; Bond work index; Population balance model. 1 Technical contribution to the 6th International Congress on the Science and Technology of Ironmaking – ICSTI, 42nd International Meeting on Ironmaking and 13th International Symposium on Iron Ore, October 14th to 18th, 2012, Rio de Janeiro, RJ, Brazil.

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Estimation of Grinding Time for Desired Particle Size ...

Jan 03, 2020· A bench test was developed for dry grinding to determine the Bond work index and to know the PSD and hematite liberation in all the three iron ore product samples obtained from the BBM. For each iron ore sample, 700 cc of feed was weighed and added into the BBM. The BBM was set for 100 revolutions in the first iteration.

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Determination of Bond index of Birnin- Gwari Iron Ore in ...

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 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 …

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The Work Index In Blasting | U.S. Rock Mechanics ...

The 80% passing size P of the broken rock must be measured by size analysis or must be estimated to obtain the blasting work index. 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 in ...

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Crushability Workindex For Iron Ore

Crushability workindex for iron ore - smocthumpamonin 247 onlineow to bond index in rock crusher iron ore crusher equipment how to bond index in rock crusher description, bond crushability work index, crushability and bond work index relation high-frequency screen is a good choice for screening and grading the fine particles of.

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Procedure for determination of ball Bond work index in the ...

Jan 01, 2009· 1.. IntroductionA 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 modified in 1961 (JKMRC CO., 2006).This index is widely used in the mineral industry for comparing the resistance of different materials to ball milling, for estimating the energy required for grinding, …

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Bond Work Index Tables (Wi) | PDF | Rock (Geology) | Minerals

Bond Work Index Tables (Wi) - Free download as PDF File (.pdf), Text File (.txt) or view presentation slides online. Here there are given tables from various sources for the Bond work index values of mining materials (ores, industrial minerals and rocks). These work indexes can be used for the determination of tumbling mills (rod, ball mills) power.

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(PDF) Determination of Bond index of Birnin-Gwari 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 …

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grindability work index for iron ore | worldcrushers

Jul 01, 2013· World consumption of iron ore grows 10% per annum on average with the main consumers being China, Japan, Korea, the United States and the European Union. This entry was posted in Uncategorized. Bookmark the permalink .

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CONTINUE TO INTERSECT MAGNETITE BODY OVER 10KM …

finer grind size. Low Grinding Costs Comprehensive testing on diamond core samples by Ammtec has provided a Bond Work Index of 11kWh/t. This is relatively soft for magnetite BIF mineralisation. In comparison, most WA magnetite BIF projects have a Bond Work Index of circa 18 – 20 kWh/t. Low Operating Costs

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Investigation of iron ores based on the bond grindability ...

Grinding is a process of reduction of lumps to powder depending on the requirement of particle size and particle shape. The present investigation involves the identify the physical properties of three different types of iron ores by using Bond ball mill. The result shows that the maximum Bond work index of 14 KWh/mt was obtained for `A' type iron ore sample.

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by Microwave Heating

Bond work index (in kilowatt hours per metric ton ore), 3 a constant for any product discard size, is calculated from the following Bond-derived (5) equation: W 1.6 (P)O.5 GO.82 where W is the work index, P is the product discard mesh size opening in micrometers, and G is the grindability for the given product mesh size.

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Metallurgical Scoping Studies

ore. Some these tests include Bond Work index tests, SAG Power Index tests (SPI), and JK grind tests. The information from the grinding work can provide an estimate of the energy requirements for a prospective plant and an understanding of the ore variability. Preliminary grinding flowsheet development can be leveraged from this type work.

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SIMPLIFIED BOND WORK INDEX DETERMINATION By: R. O ...

Numerically, the work index is the energy required in kwh/t to reduce a given material from theoretically infinite feed size to 80% passing 100 microns. The work index of a particular material is determined in the laboratory by conducting the standard Bond grindability test. Bond developed separate tests for

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Characterization and Bond Work Index Determination of Low ...

and consumed power to grind one tone of iron ore were determined via standard Bond mill. The results showed that the ore is hematitic ore with Goethite and quartz minerals. The ore is low grade containing 41.41 % Fe2O3 and 50.88 SiO2. 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 ...

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Development of the Hawsons Low-Grade Magnetite

The mineralisation is particularly soft for crushing and grinding, with a Bond work index of 6.3 and an overall comminution power requirement of 6.7 kWh/t of ore. This equates to 39 kWh/t of concentrate which is significantly less than for similar projects. The mineralisation fractures easily, preferentially along grain boundaries.

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:,,,, Abstract: The feed particle size requirement of Bond Standard Ball Mill Work Index determination is -3.2 mm,which is hard to obtain in some cases.Therefore,it is indispensable to study the relation between the Bond Standard Ball Mill Work Index and the material particle size.This is a significant ...

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