gold ore crushing work index


Yankee know how fails at Mt Todd Pierpont

Zapopan was taken over in stages by Pegasus Gold Inc of the USA In fact the crushing circuit never seems to have worked properly Mt Todd ore is reputed to have the highest work index in Australia which means it takes more energy to nbsp

Simplification of Jaw crusher for Artisanal Aggregates Miners

A small scale mobile jaw crusher unit with a throughput of 1 1 5 tons of Density g cm3 Abrasion index Work index kWhr ton Gold ore 2 86 0 2000 14 83 anical engineering design sketches and component drawings were

Grinding Circuit at Mouteh Gold Mine

Mouteh gold processing plant is located in Esfahan province center and corrected operating Bond work index subsequently were calculated to be 16 8 and 21 47 kwh t respectively By changing in ore properties power draw of grinding

Bond Work Index Tables Wi Scribd

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 tu by 1989N in Types gt Research grinding and mineral processing

Design of a crushing system that improves the IEOM Society

11 Sep 2015 efficiency of gold ore at a local mine case of Zimbabwe the power consumption of gyratory crushers knowledge of the ore work index

SAG kWh t MEASURED USING A STANDARD TEST Starkey

ball mill work index 13 kWh t had SAG hardness as low as 1 4 kWh t in one case ROM crushed ore 0 46 20 7 17 4 366 S 2 5 Au Gold ore 0 63 16 0

Reliability of Some Ore Characterization Tests Ausenco

crushed product quantity and size was a leap in comminution understanding and model development Hukki work data hence leading to incorrect SAG specific energy calculations for competent rocks or Axb values Tests such as the Unconfined Strength UCS and Point Load Index PLI measure the bulk and

confidential extended gravity recoverable gold egrg

A sample of gold ore was submitted by Komet Resources for Extended Gravity Recoverable Gold and leach The grindability and bond work index of the ore sample was 0 980 g rev and 15 20kWh st respectively The standard Bond Ball Mill Work Index test procedure is firstly to stage crush the feed to minus 3 35mm nbsp

design of the kubaka grindng circuit using spi and bond Starkey

Work Index Test it is now possible to determine from these two relatively amount of energy required to grind an ore from the primary crushed size to the desired selected to represent as well as possible the silicious gold and the sulphide

Table of Bond Work Index by Minerals 911 Metallurgist

22 Sep 2017 Avg Bond Work Index kWh t kWh t kWh sh t kWh t kWh t kWh t kWh t Range No of Tests Alumina 17 9 7 34 6 Andesite 20 1 18 3 20 1 19 5 Barite 6 3 4 7 5 2 5 0 5 8 4 9 7 Basalt 18 9 17 1 18 8 19 0 19 0 Bauxite 9 7 9 5 8 8 9 7 10 0 10 0 14 5 1 31 29 Cement clinker 15 0 13 1 13 5 nbsp

Paper 27 Paper 27 CEEC

2005 showed why conventional Bond Work index tests on HPGR product is likely to under higher fines content and reduction in work index due to the Lone Tree NV gold Pilot plant tests at several mining company laboratories Hundreds of ore tests at Public mineral processing labs such as SGS Oretest SGS nbsp

Mineral Processing Crushing Plant design construction operatio

26 Feb 2014 The figure below shows that the Ball Mill work index is normally clay shale and gold ore http mineralprocessingconsultant com 86 87

Testing of Ore Comminution Behavior in the MDPI

19 May 2015 program for an ore deposit requires extensive test work Methods for Bond defined a crushing work index in kWh t by Australian copper gold deposits the Bond mill work index and the crushability parameters obtained

Basics in Minerals Processing

BASICS IN MINERAL PROCESSING 11 5 Process system – gold bearing ore See information on work index and abrasion index section 3 page 2 1 Talc

OPTIMAL ENERGY MANAGEMENT OF CRUSHING PROCESSES

The Bond 39 s work index Wi of gold ore is 14 83 KWh short−ton 49 3 3 2 3 Jaw crusher apron feeder and vibrating grizzly For simulation purposes a primary jaw crushing station is assumed to be installed under the ore pass described above In general the largest feed size lump size is the major index for the choice of nbsp

Table of Bond Work Index by Minerals 911 Metallurgist

19 Mar 2017 This Table of Ball Mill Bond Work Index of Minerals is a summary as tested on 39 around the Gold ore 16 5 14 8 14 9 16 4 16 5 14 6 3 42 183 Source 6 SME handbook of mineral processing N L Weiss Editor NY 1985

Observations on the Bond standard grindability test and a SAIMM

1 Jan 1989 The Bond grindability test the Bond Work Index and Council for by gold ore sample 0819 Table I items 6 to 13 for which the Work Index nbsp

Improved grindability and gold liberation by microwave pretreatment

18 Jul 2013 After microwave processing the grindability of the ore was improved and the crushing strength and the Bond Work Index were reduced by nbsp

Highlights Gold Road Resources

3 Jul 2014 Comminution testwork on Gruyere Deposit mineralisation completed for Scoping Transitional rock samples are medium strong to strong for crushing slightly abrasive for For the three Fresh ore composites the DWi values of 7 67 kWh m3 7 91kWh m3 and 8 76 Bond Rod Mill Work Index BRMWi

correlation between bond work index and Assiut University

Comminution in a mineral processing plant or mill involves a sequence of crushing and grinding The Bond work index is regarded as one of the crushing

Comminution Brochure Mintek

Piston die testwork Ø0 94m x 1 5m length to Ø 0 4m Typical throughput 0 3 3 0 t h depending on ore characteristics and circuit Accurate instrumentation for feed MINTEK MINERALS PROCESSING DIVISION COMMINUTION GROUP BENCH SCALE COMMINUTIION TEST WORK Bond Work Indices Service offering nbsp

Basic Comminution Concepts and Recent Trends in the Industry

Ore grindability refers to the ease with which materials can be comminuted and data from grindability tests are used to evaluate crushing and grinding efficiency Most widely used parameter to measure ore grindability is the Bond work index Wi that is described in previous paragraph Berry and Bruce 1966 developed a nbsp

Gold Ore Crushing Work Index – Grinding Mill

laboratory scale test work to determine the ore s Bond ball mill work index Bond rod mill work index and Bond low energy impact crushing work index 9

Determination of Work Index of Enyigba Lead Ore Ebonyi State

test material were crushed pulverized and ground using the laboratory ball mill production of Casseterite tin Gold Coal Lead Zinc Sulphides Tantalite and Bond 39 s work index of Enyigba Nigeria ore was found to be 14 37kwh short ton

Pre treatment of rocks prior to comminution – A critical review of

It has been an established fact that comminution processes crushing and grinding energy in the range of 15 2–32 1 kW h t of crushed and milled gold ores 3 Due to change in mineralogy there is 70 reduction of work index of MC ore nbsp

Effect of core diameter on the Bond impact crushing work index test

The Bond low energy impact crushing work index test is specified to be performed on rock energy impact work index a k a crushing work index is conducted only on coarse specimens placed one at a time in the index on a Canadian gold ore attributed to crushing drill core versus testing whole diameter drill core

confidential extended gravity recoverable gold egrg

The grindability and bond work index of the ore sample was 0 980 g rev and The standard Bond Ball Mill Work Index test procedure is firstly to stage crush the

bond impact crushing work index test

Bond impact crushing work index Journal of the Southern African Institute of Mining and Metallurgy The work beneficiation plant iron ore sbm gold ore

Metallurgical Testing Services Acme Labs

Our Mineral Processing Laboratories are fully equipped to perform all metallurgical investigations required for ore evaluation and mill design Testing services include Comminution Crushing Grinding Bond Rod amp Ball Mill Work Index Abrasion Index Size Classification amp Screening Starkey SAG Design Test Flotation

hardness model and reconciliation of throughput models to plant

ore Two forecasting techniques have been used an in house model strongly dependant of bond work index and MinnovEx s CEET2 dependant of Bond work index and Sag power operations processing an additional Golden Software

crushing work index formula Mineral Processing in Mining

16 Jun 2015 crushing work index formula Previous Have a Mineral Processing QUESTION Come in ask your We can IMPROVE ALL PLANTS Mineral Processing Engineering amp LABORATORY Ore Testing 30 Ghana Gold Facts

The Evolution of Crushing and Grinding Changes in the Industry by

1 Jul 2010 In Australia these were pioneered at Argyle on diamond ores and proved problematic HPGRs are emerging as an important new comminution process in mineral processing circuits primarily because they offer substantial energy savings There is good evidence from previous work that HPGR technology nbsp

A simple framework for developing a concept beneficiation flow sheet

mainly grade the selected beneficiation technology and the ore 39 s liberation properties strategies finding application in fields as diverse as gold panning and Crushing Work Index A number of individual lumps of the ore between 50 mm and 75 mm in size are used in this test Twenty particles are typically required

Bond Impact Crushing Work Index Testing Machine Pendulum Tester

Working principle Crushing by impact 76 mm maximum feed size Test repetition At least 10 preferably 20 test runs Adjustable crushing angle Repeatable crushing results Safe two hand operating buttons The Bond Crushing Work Index CWI describes the competency of the ore at larger particle sizes europe nbsp

Design of a crushing system that improves the IEOM Society

11 Sep 2015 Gold mining is the process of mining gold ores from the ground up till the stage where pure gold is extracted The gold ores are usually big and have to be crushed to reduce them to a size of about 12mm To compute the power consumption of gyratory crushers knowledge of the ore work index

Effect of core diameter on the Bond impact crushing work index test

The Bond low energy impact crushing work index test is specified to be index on a Canadian gold ore attributed to crushing drill core versus testing nbsp

Bond Impact Crushing Work Index Procedure and Table of

15 May 2017 Bond Impact Crushing Work Index Procedure and Table of Crushability At least 10 pieces of minus 3 plus 2 ore 20 pieces recommended

Development of a Geometallurgical Testing Framework for ore

the Bond work index from single pass grinding tests using small amounts of sample Mineral processing properties within an ore body can vary a lot and bring susceptibility and seismic wave parameters from Australian copper gold nbsp