# bond grinding work sindex of indonesian iron ore

### Mill (grinding)Wikipedia

Attrition between grinding balls and ore particles causes grinding of finer particles. SAG mills are characterized by their large diameter and short length as compared to ball mills. The inside of the mill is lined with lifting plates to lift the material inside the mill where it then falls off the plates onto the rest of the ore

Read More### 3 Grinding Media size formulaDoering

Wi Bond Work Index (KWh/t) Cs per cent of critical mill speed ( ) S specific gravity of mill feed (g/cm3) D inside mill diameter (m) K proportionality constant · 350 for wet grinding · 335 for dry grinding Subject to calculation the nearest commercially available media size should be selected. Should the sizing formula nominate a

Read More### bond work index Yahoo Answers

Sep 22 2006 · grinding iron ore in ball mills. Answer Save. 1 Answer. Relevance. Mesab123. Lv 6. 1 decade ago. Favorite Answer. The bond work index is used to determine the energy requirements of grinding balls in ball mills. 0 0 0. Login to reply the answers Post Still have questions Get your answers by

Read More### A Method of Calculating Autogenous/Semi-Autogenous

D 2012. A method of calculating autogenous/semi-autogenous grinding mill specific energies using a combination of bond work indices and Julius Kruttschnitt parameters then applying efficiency factors in Proceedings 11th AusIMM Mill Operators Conference pp 37-44 (The Australasian Institute of Mining and Metallurgy Melbourne).

Read More### Carajas Iron Ore MineMining Technology Mining News

Vale produced 237.9Mt of iron ore at the Carajas Mine for 2009 against 301.7Mt in 2008. Brazil is currently the world s largest exporter of iron ore with an annual production of more than 510Mt. Carajas iron ore mine expansion. In 2007 Vale approved an expansion project of the Carajas mine.

Read More### a Magnetite Ore in Eastern Hebei ChinaSemantic Scholar

a Magnetite Ore in Eastern Hebei China Guangquan Liang 1 2 (crushing ore work index) and M ih (HPGR ore work index) can be obtained from the SMC tests 15 . These parameters can be further used to evaluate speciﬁc energy consumption in the Morrell model. 2.4. Bond Ball Work Index Test A grinding mill (F305 mm 305 mm) was used for the

Read More### COMPARISON OF HPGRBALL MILL AND HPGRSTIRRED

Bond ball mill work index C Wi Bond crusher work index D HPGR roll diameter (m) E sp net specific energy consumption (kWh/t) F HPGR hydraulic pressing force (kN) F 80 particle size at which 80 of particles pass in feed F SP 2HPGR specific pressing force (N/mm ) L HPGR roll length (m) ṁ or m-dot HPGR specific throughput constant (ts/hm3)

Read More### Application of Operating Work Indices in Autogenous

2 the operating work index (Wio) of an existing grinding circuit can be calculated given known mill power draw throughput feed and product size distributions. kWh/t = Power applied per ton of feed to the grinding unit Wi = The standard Bond work index of the ore P 80 = The 80 cumulative passing size of the product in microns F 80

Read More### Up-grades and Optimization of Crushing and Grinding Plants

Molybdenum ore Iron ore Iron ore concentrate Gold ore Copper ore Diamond ore / kimberlite Platinum ore Other minerals. PolycomHigh Pressure Grinding Roll (HPGR) Reduction of Bond Work Index and OPEX 5 2017 MicroMicro-Cracks Cracks. Secondary crusher optional • Reduction of Bond Work Index (BWI) • Reduction of energy consumption of ball

Read More### Influence of blasting on the size distribution and

The focus in this review is on the energy expenditure and the influence of blasting on the size distribution and properties of muckpile fragments. Grinding is by far the most energy intensive stage of the comminution process. It is e.g. used both in iron and sulphide ore

Read More### METALLURGICAL TEST RESULTS SELENGE IRON ORE

Jan 21 2015 · Ai-Bond Abrasion Index 0.32 0.17 4 BWi-Bond Ball Mill Work Index (kWh/t) 19.4 19.9 5 Notes 1. The UCS results indicated that the samples range from strong to very strong. 2. The Bond CWi results indicated the crushability of the samples is medium. 3. The SMC results indicated that grinding of the samples by SAG milling of the samples is hard. 4.

Read More### ASX drops Energy mining sectors lead losses

7 days ago · Mining Rio not afraid of further downgrades if recession hits demand. Fresh from iron ore and copper production downgrades Rio Tinto has vowed to match production volumes to demand as a

Read More### india ball mill producer Ore plant Benefication Machine

Oct 12 2013 · india ball mill producer. cement processing plant cement grinding machine ball mill cement powder grinding equipments pakistancrushers /non-m China Zenith pany provide the crushing machines grinding machines screening Ball Mill Manufacturers in India

Read More### Iron oreWikipedia

Iron ore is the raw material used to make pig iron which is one of the main raw materials to make steel—98 of the mined iron ore is used to make steel. In 2011 the Financial Times has speculated that iron ore is "more integral to the global economy than any other commodity except perhaps oil ".

Read More### bond work index of iron orepiuscuolamenomafia

Bond Grinding Work Index Of Indian Iron Ore. Grindibility index for iron ore mining 20121114grindability work index for iron ore crusher south africamtec 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 more detailedet price iron ore.

Read More### Relationships between comminution J energy and product

Table I shows the Bond ball mill work index obtained for the ore samples as well as the iron and silica content in concentrate and tail after LIMS. The concentrate weight recovery was in the order of 50–60 . Furthermore it may be observed that the Bond ball mill work indices for the ore (Wi) varies from 14.6 to

Read More### SMC Test JKTech

The SMC Test®a cost-effective means to predict comminution circuit throughput rock mass characteristics and blasting properties. The SMC Test® was developed by Dr Steve Morrell of SMC Testing as a cost-effective means of profiling an ore body to predict its comminution circuit throughput as well as its rock mass characteristics and blasting properties.

Read More### Rapid determination of Bond rod-mill work index by

Rapid determination of Bond rod-mill work index by modeling the grinding kinetics fast and accurate procedure is introduced to find the rod-mill work index based on the conventional Bond work index. The grinding experiments were carried out on four typical samples of iron copper manganese and lead–zinc ore with three test-sieves in

Read More### different types of grinding machinePopular Education

Machine ToolsGrinding MachinesWheel Grinders There are many different types of grinding machines available which are used to obtain very close tolerances and fine finishes.

Read More### EOI No. HCL/

Iron 0.05 Unknown 0.35 Total 100.00 Number of measured points 38345 3.2 Copper Distribution of Ore Samples 3.3 Crushing work index Sample Identity (kWh/t) Sample SG (kg/dm3) Bond Impact Crushing Work Index Average /- Malanjkhand 2.68 9.7 5.4 3.4 Grinding Bond Work Index BondBallMillWorkIndexTest Work SampleIdentity Aperture Pi Average

Read More### ArriumWikipedia

Arrium Mining Consumables which includes Moly-Cop grinding media the largest supplier of grinding media (grinding balls and grinding rods) in the world servicing the global mining industry particularly the copper gold and iron ore sectors. The business sells grinding media in South America North America and Australasia supplying around

Read More### Application of Operating Work Indices in Autogenous

2 the operating work index (Wio) of an existing grinding circuit can be calculated given known mill power draw throughput feed and product size distributions. kWh/t = Power applied per ton of feed to the grinding unit Wi = The standard Bond work index of the ore P 80 = The 80 cumulative passing size of the product in microns F 80

Read More### Metalurgical Test Work Confirms Premium High Grade 65.8

Metalurgical Test Work Confirms Premium High Grade 65.8 Percent Iron Ore Concentrate with 0.67 Percent V205 at the Mont Sorcier Iron Ore and Vanadium Project

Read More### CrusherWikipedia

A crusher is a machine designed to reduce large rocks into smaller rocks gravel or rock dust.. Crushers may be used to reduce the size or change the form of waste materials so they can be more easily disposed of or recycled or to reduce the size of a solid mix of raw materials (as in rock ore) so that pieces of different composition can be differentiated.

Read More### Mobile Mining Crusher manufacturers

Aggregates for Concrete in NigeriaNigeria is rich is solid mineral resources such as Kaolin gypsum mica clay tantalite iron ore Granite Crushing Plant in Sri LankaSri Lanka is one of the most important Asia marketing of MTS every year there are many customers fr Limestone Grinding in BelgiumIn modern industries powder has widely application and powder making industry has

Read More### bond work index Yahoo Answers

Sep 22 2006 · grinding iron ore in ball mills. Answer Save. 1 Answer. Relevance. Mesab123. Lv 6. 1 decade ago. Favorite Answer. The bond work index is used to determine the energy requirements of grinding balls in ball mills. 0 0 0. Login to reply the answers Post Still have questions Get your answers by

Read More### Bond Tests Mining SGS

Bond F. C. "Crushing Grinding Calculations" Reprint from British Chemical Engineering Allis-Chalmers Publication 07R9235B. Bond Low Energy Impact Test. The test determines the Bond Impact Work Index which is used with Bond s Third Theory of Comminution to calculate net power requirements when sizing crushers .

Read More### ObservationsontheBondstandardgrindability test

and aWork Index of11 5kWh/t wasfound. Not only to15 6kWh/t astheapertures ofthelimiting screening wastheWork Index reduced toamorerealistic figure by werereduced from425to150 m.TheWork Index then themodified procedure butthenumber ofcyclesrequired increased abruptly to44 2kWh/t andnofewerthan44

Read More### Reliable equipment for iron ore minesFL

It s all about volume. In the iron ore industry you want the largest possible throughput of iron ore through your processing equipment. That s why you need the most reliable and proven equipment that never lets you down even though it handles large tonnages every day of the year.

Read More### 3 Grinding Media size formulaDoering

Wi Bond Work Index (KWh/t) Cs per cent of critical mill speed ( ) S specific gravity of mill feed (g/cm3) D inside mill diameter (m) K proportionality constant · 350 for wet grinding · 335 for dry grinding Subject to calculation the nearest commercially available media size should be selected. Should the sizing formula nominate a

Read More### Iron oreWikipedia

Iron ore is the raw material used to make pig iron which is one of the main raw materials to make steel—98 of the mined iron ore is used to make steel. In 2011 the Financial Times has speculated that iron ore is "more integral to the global economy than any other commodity except perhaps oil ".

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