mining recovery factor

Directive 082: Operating Criteria: Resource Recovery ...

the recovery factor is 90 weight per cent. − If the average bitumen content of the as-mined ore is less than 11 weight per cent bitumen, recovery is determined by the following equation, where x is the average weight per cent bitumen content of the as-mined ore: Recovery = −202.7 + 54.1(x) − 2.5(x 2)

Dilution and ore recovery

where Mining Recovery and Mining Dilution modifying factors are supported by reasonable assumptions. For a Feasibility Study appropriately detailed assessments of Modifying Factors are required and need to be documented. As a guide the Mining Factors are listed in JORC Table 1. Section 4. Considerations material to the Mining Recovery and Mining

The mine planning process for an open-pit diamond mining ...

Mining recovery, mining dilution, and processing recovery. At this stage only the diamond prices and operating costs for the current year are applied. Whittle mines the pit as if the mining occurs in a single year, hence neither the discount factor, capital, nor the mining and processing schedules are applied at …

Definition of Recovery factor (coal)

Recovery factor (coal) -- The percentage of total tons of coal estimated to be recoverable from a given area in relation to the total tonnage estimated to be in the demonstrated reserve base.The estimated recovery factors for the demonstrated reserve base generally are 50 percent for underground mining methods and 80 percent for surface mining methods.

Updated Feasibility Study Confirms Significant Value of the

 · The mining recovery factor was set at 95% to account for mineralized material left in the margins of the deposit in each block. TABLE 5: CAPITAL AND OPERATING COSTS SUMMARY ...

Sill pillar recovery at the Louvicourt mine

In the 680 m to 655 m level sill pillar stopes, the recovery factor is based on backfill cohesion and rock mass quality. The average recovery factor used for the sill pillars stopes is 59.6%. It was decided to develop under paste backfill on the 655 m level and apply transverse blasthole stoping as the mining method for the sill pillars.

Lumber Recovery Factor, LRF, Conversions, Calculator ...

Net lumber recovery for a 1st quartile northern softwood sawmill with an average log top diameter of 6.0" (15 cm) could be up to 304 fbm/m3 or 8.6 fbm/ft3 or .47 m3/m3. Log quality, target sizes, saw kerfs and wane allowances will all effect maximum lumber recovery. In this example the fiber recovery distribution is: Finished lumber (kds4s) 47%

Factors Influencing Ore Recovery and Unplanned Dilution in ...

Figure 12 shows stope performance of ore recovery and dilution factors for the year 2018. The average recovery factor is 70% and dilution factor is 20%. Current recovery factor of 70% is way below the optimum planned target of ≥85% and current dilution factor is ≥20%, which is higher than the desired dilution factor of ≤10%.

Proven & Probable Reserves

application of a revised mining recovery factor at Cigar Lake from 90% to 86% which removed 3.8 million pounds of proven and probable reserves; partially offset by: a mineral resource and reserve estimate update at Cigar Lake, which added 7.4 million pounds of proven and probable reserves

A conceptual framework for characterizing mineralized ...

 · For instance, the Alberta energy regulator (AER) has established criteria that define the mining cut-off grade and minimum processing plant recovery factor. According to directive 082 by the AER [15], the criteria seek to ensure conservation and further prevent sterilization of oil sands resources in the Province of Alberta, Canada.

Chapter 7 Energy Use in the Copper Industry

form of energy used in open-pit mining (and proc-essing). There is a trade-off between energy con-servation and resource recovery. The cut-off grade6 used in mining determines: 1 ) how much ore and waste have to be transported, 2) how much ore is milled or waste is available for dump leaching operations, and 3) from the ore that is

Geomodelling, resource & reserve estimation using mining ...

 · Resource and Reserve Estimation Iso-core grid Density / Specific gravity Recovery factor • Considering Geological disturbance and mining loss Topo grid Quality grid 11. Reserve Estimation Geological Reserves Thickness wise Grade wise Depth wise Mineable Reserves Extractable Reserves Barrier - infrastructure, Bench, conveyor belt etc.

Category-A Mining Plan

a) Mining method, Recovery factor, mining losses, processing loss:- The reserves of mineral have been estimated by surface area method. On the basis of the field observation, structural behavior & the control of mineralization the physical of the ore bodies such …

Wheeler River Project | Denison Mines Corp.

A mining recovery factor of 85% has been applied to the mineral resource above the cut-off grade; Mineral reserves for the Gryphon deposit are estimated at a cut-off grade of 0.58% U 3 O 8 using a long-term uranium price of USD$40/lb, and a USD$/CAD$ exchange rate of 0.80.

Waterbury Project | Denison Mines Corp.

It includes indicated mineral resources and ISR mining recovery factor that are considered too speculative geologically to have the economic considerations applied to them to be categorized as mineral reserves, and there is no certainty that the preliminary economic assessment will be realized. Mineral resources are not mineral reserves and do ...

Metallurgical Accounting Formulas | Concentration and ...

 · Recovery % Represents the ratio of the weight of metal or mineral value recovered in the concentrate to of the same constituent in the heads or feed to the process, expressed as a percentage. It may be calculated in several different ways, depending on the data available. By assays f, c and t only: R = 100 c(f — t)/f (c — t) = recovery %

Novel approach for predicting water alternating gas ...

 · where RF = the overall recovery factor (0–1). E D = the displacement efficiency (0–1). E A = the areal sweep efficiency (0–1). E V = the vertical sweep efficiency (0–1).. The overall recovery factor is a function of multiple factors including fluids mobilities, injection patterns, areal and vertical heterogeneities, degree of gravity segregation, and total pore volume injected (Tarek ...

Froth flotation

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.

Antioquia Gold Inc.

The mining recovery factor is depended on results of rock mechanics studies. For every 100 vertical metres it is suggested to leave a nine metre horizontal pillar which will be dependent on the vertical extent of each vein''s geometry. The following table shows the dilution and mining recovery factor for C&F mining based on specific ...

Washington''s Coal—History and Future Development …

Earth Resources (recovery factor of 80 percent, commonly used for strip mining, included. ''llA recovery factor of 50 percent was used based on reported tonnage of clean coal, most of which was mined by underground methods. -2-The resulting total in-place reserves, based on published information, is ...

Metal Recovery Rate

The metal recovery rate, or also known as the mineral recovery percentage, indicates what percentage of valuable metals are expected to be available for sale after the refining process has taken place.The metal recovery rate can be found in a mining …

2012 Americas School of Mines

complexity of the metal recovery factor. • Recognizing ore loaded on heap leach pads as inventory is normal PwC mining industry practice (matching principle). • Consider each pad …

What is Capital recovery factor | Definition and Meaning ...

The capital recovery factor is the ratio used to determine the present value of a series of equal annual cash payments. The payments could be made weekly, monthly, quarterly, yearly, or at any other regular interval of time, and are commonly known as annuities.

2019 PEA SUMMARY – Vendetta Mining Corp

For long hole mining AMC has applied a dilution factor of 12% at zero grade to the Mineral Resource and a mining recovery factor of 95% to the stopes. Long hole stopes are backfilled with waste rock. Contractor mining using trackless diesel loaders and trucks and …

Mineral Recovery

The best performance was demonstrated by reducing a 9% LOI feed ash to a 4.5% product LOI at mass yield of 66.7% (ash mineral recovery of 70%) at 300 kg/h. From this study, a scale-up factor was determined to be 830 kg/h m 2 of the total electrode area (including both positive and negative electrodes), or based on one electrode, 1660 kg/h m 2 ...

Recovery rate in quarries | All about Natural Stone ...

The recovery rate, naturally, is defined by the mining people in India in a much more narrow sense, restricted to dimensional blocks. There is another element to recovery rate which is, in fact, key to whether the business is viable or not- when recovery rate is defined using economic criteria .

Mine call factor issues from a surface mine perspective ...

 · The theory of mine call factor (MCF) compares the sum of metal produced in recovery plus residue to the metal called for by the mines evaluation methods expressed as a percentage. The concept is well known in underground mining scenarios and therefore this article highlights some MCF issues from a surface mine perspective using […]

Carlos Sarmiento: The Recovery Factor

the recovery factor Ecuador 2012 | ENERGY & MINING | INTERVIEW TBY talks to Carlos Sarmiento, General Manager at Schlumberger Surenco SA, on what the company brings to Ecuador''s oil and gas industry and its developments in the wider region.

Major Mines & Projects | Waterbury Lake Project

Mining recovery has been included in the mine plan and was determined from other typical ISR projects. These results were considered against benchmarked ISR operation recoveries within the context of comparing the grade distribution and geometry between the typical low-grade and dispersed roll front deposit benchmarked operations and the high-grade and concentrated Tthe Heldeth Túé deposit.

Recovery Factor Prediction for Deepwater Gulf of Mexico ...

 · Recovery factor is affected by many geological and engineering factors; as a result, there is no explicit approach to accurately calculate the recovery factor. This is particularly true for deepwater development as the parameters associated with the recovery factor estimation have significant uncertainties and usually extremely costly to obtain.

The Mine Call Factor

the "Mine Call Factor" (MCF). This factor compares the gold estimated in situ by the surveyors (or geologists) with the amount of gold finally produced by the plant - with allowance for losses to tailings. The factor is generally expressed as the ratio between the "gold called for" and the gold accounted for, as a percentage.

Mine Call Factor issues at Iduapriem Mine: Working towards ...

The theory of Mine Call Factor (MCF) compares the sum of metal produced in recovery plus residue to the metal called for by the mines evaluation method expressed as a percentage. This MCF concept is well known in underground scenarios and therefore this report

Peru''s mining industry is fueling the country''s post ...

 · Mining is going to be a key factor in the Peru''s economic recovery. Peru''s mining industry is on track to be one of the fastest in the world to recover from the coronavirus pandemic, according to its Ministry of Energy and Mines. Preliminary figures from the World Bank estimate that the Peruvian economy will grow by 7.6% in 2021.

Extraction of petroleum

Recovery factor during the primary recovery stage is typically 5-15%. [2] While the underground pressure in the oil reservoir is sufficient to force the oil (along with some associated gas) to the surface, all that is necessary is to place a complex arrangement of valves (the Christmas tree ) on the well head to connect the well to a pipeline ...