standard e traction dilution and recovery factors for mining methods

ESTIMATION OF MINERAL RESOURCES And MINERAL RESERVES

ESTIMATION OF MINERAL RESOURCES And MINERAL RESERVES BEST PRACTICE GUIDELINES Committee Members ... The main elements/factors to be consideredinclude mining, metallurgy, geotechnical, hydrological, environmental, location, marketing, legal requirements, revenue, costs and social implications. 7. Mineral Reserve Estimation A Mineral Reserve estimate represents the collation …

Ore Dilution & Recovery in Mining

Ore Dilution & Recovery in Mining View Larger Image Recovery and dilution usually are interrelated; with some methods of stoping a high recovery involves contamination of the ore from the walls or capping, and often clean ore can be obtained only by leaving some ore in the mine.

MPIGM Workshop South African Representative CRIRSCO

South African Representative CRIRSCO . Presentation Agenda 1. General Open pit modifying factors 2. The importance of structural geology, geotechnical engineering and geohydrology; 3. Dilution and recovery factor . Estimation and Reporting of Mineral Reserves - Mining Factors Describe; Method and assumptions used in the PFS or FS to convert the Mineral Resource to Mineral Reserve ie by pit ...

Common & Basic Formulas for Mineral Processing …

The degree of dilution of this standard solution by pulp water is ascertained by chemical analysis of solution from a filtered sample, and the tonnage of ore is then calculated from the percentage solid. This method is impractical for most purposes, but occasionally an exceptional circumstance makes its employment advantageous. It has also been suggested as a rapid and accurate method of ...

Ventilation and Cooling in Underground Mines

An air velocity of 0.1 m/s reflects the effect of natural convection (i.e., no perceivable airflow at all). An air velocity of 0.25 m/s is the minimum normally allowed in mining and 0.5 m/s would be required where the wet bulb temperature exceeds 25 °C.

ISSN Print: ISSN Online: Optimization of stope recovery ...

Keywords: Stope recovery; dilution; stope design; mining method Introduction quentially removed. It is limited along its strike usually by the ore remnants and along the section by the country rock. Therefore, the stability of the rock at the boundary of the stope is closely linked to the stope design and vise-versa. The design is a function of rock mass quality and must be optimized in a bid ...

Numerical modelling of out-of-seam dilution in longwall ...

With the use of correct methods for mining ore deposits the dilution factor usually varies from 0.05 to 0.20, depending upon the mining, geological, technico-economic condition and adopted mining method .

Analysis of Highwall Mining Stability - The Effect of ...

feet to 1,200-feet of additional recovery when the economic stripping ratio is reached in contour mining or in slot mining when surface access to a reserve is limited. A significant attribute of the highwall miner is its versatility. HWM has been used successfully to mine abandoned pre-reclamation law highwalls, points or ridges uneconomic to mine by underground or other surface methods ...

Top of Coal - Mining3 - Transforming Mining

Accurately detecting the top of a coal seam before blasting is a key factor to effectual coal recovery. Depending on local site geology and seam conditions, up to 12% of the marketable coal resource is estimated to be unrecoverable due to coal loss and dilution during the mining process.

Room and Pillar Mining Method - SlideShare

Room and Pillar Mining Method 1. Hassan Z. Harraz [email protected] 2014- 2015 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.

Design and application of an efficient mining method for ...

Design and application of an efficient mining method for gentle-dipping narrow vein at Kafang Mine F Gao et al. 294 Underground Design Methods 2015, Perth, Australia

Calculation and Management for Mining Loss and Dilution ...

dilution calculation method, this thesis introduces the operating principle and process of calculating the loss rate and dilution rate at the mining fields by adopting geological models. As an example, authors establishes 3 D models of ore-

(PDF) Rock Blasting in Underground Mining - …

The study of top-coal drawing characteristics is key to improving the top-coal recovery ratio and to reducing the waste of coal resources in longwall top-coal caving (LTCC) mining.

INTRODUCTION TO MINING - Ciência Viva

1 INTRODUCTION TO MINING 1.1 MINING'S CONTRIBUTION TO CIVILIZATION Mining may well have been the second of humankind's earliest endeavors— granted that agriculture was the first.

Lecture 4: Underground Mining - SlideShare

3) Cut and Fill (C & F) Stoping It is one of the more popular methods used for vein deposits and has recently grown in use. It is an expensive but selective mining method, with low ore loss and dilution.[3] (i.e., allows selective mining and avoid mining of waste or low grade ore). Is relatively expensive and therefore is done only in high grade mineralization (Because the method involves ...

CONTINENTAL RESOURCE MANAGEMENT PTY LTD

Mining factors The nature and appropriateness of the selected mining method(s). Key assumptions made regarding geotechnical parameters (e.g. pit slopes, ground conditions etc.). Major assumptions made and Resource model used for pit optimisation (if appropriate). The external mining dilution factors and mining recovery factors applied. Metallurgical factors The nature, amount and ...

OPEN-PIT MINING - arm.co.za

The Gloria mining lease (ML11/83) comprises an area of 1 713.1276 hectares and is located on portion 1 of the farm Gloria (266). An application for An application for the conversion to a new order mining right will be submitted during F2008.

ASPECTS OF EVALUATING MINING PROJECTS - MADEN

In a mining project it is the ore that forms the major resource input to the mining process The mining method will be determined mainly by estimates of the size, shape, strength, depth and orienta­

Kaminak Gold announces positive feasibility | …

The Mineral Reserves were estimated at a gold price of US$1,200 / oz., and an exchange rate of C$1.00 to US$0.87, with the application of dilution and recovery factors appropriate to an open pit ...

AN APPROACH ON DILUTION AND ORE RECOVERY/ LOSS ...

AN APPROACH ON DILUTION AND ORE RECOVERY/ LOSS CALCULATIONS IN MINERAL RESERVE ESTIMATIONS AT THE CAYELI MINE, TURKEY A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF NATURAL AND APPLIED SCIENCES OF MIDDLE EAST TECHNICAL UNIVERSITY BY NİHAT SOYER IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN MINING …

Estimation of Open Cut Mining Recovery and Mining Dilution ...

estimation of Mining Recovery and Mining Dilution requires an understanding of resource estimation, mine geology, blasting, mining equipment, mine planning, mine surveying, mineral processing and information technology.

Significant New Zone of Bornite Gold-Rich Porphyry ...

2019-02-28· No mining factors have been applied to the in-situ grade estimates for mining dilution or loss as a result of the grade control or mining process. The deposit is amenable to large scale bulk ...

Appendix E8 - Canadian Environmental Assessment Agency

100% mining recovery because they can be mined in separate blasts. Ore blocks with 2, 3 or 4 waste Ore blocks with 2, 3 or 4 waste contacts will incur dilution and a lower mining recovery because they are less likely to be blasted or

Geotechnical design for dilution control in underground …

The levels of dilution usually associated with common mining methods are briefly discussed. The basic formulas for estimating dilution are introduced and some implications with regards to accuracy ...

Numerical modelling of ore dilution in blasthole …

Dilution and sacrifice of ore tend to be inseparable factors, with a trade-off between optimum recovery and impairment of grade. Inadequate attention to stope design can quickly eliminate profitability from high productivity bulk mining methods [5], [6] .

Recovery, Concentration and Purification of Mineral Acids ...

Recovery, Concentration and Purification of Mineral Acids. Mineral acids are very important in chemical procedures. Their uses vary from process to process but include reaction participants, catalysts, aids (e.g. sulfuric acid for drying gasses or during extractive distillation), and cleaning agents.

3D large scale physical modelling for studying interactive ...

level of the ore column, which is called undercutting, using standard mining methods, i.e. drill and blast, the vertical support of the ore column above is removed and the ore then caves as a result of the stresses induced around the undercut.