Tonnage Calculator
The word "tonnage" itself can mean a lot of things. We can use tonnage to describe the sizing of an HVAC system or how much a ship weighs. Basically, tonnage is the weight in tonnes (or tons for short) of massive volume objects, such as the contents of a cargo ship or earthworks like rocks and gravels.. This calculator focuses on the latter, particularly …
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Metallurgical Accounting Formulas | Concentration and …
Two Product Formula Online Calculator <– Click to Use. Applicable to the simplest separation where only one concentrate and one tailing result from a given ore feed. Ratio of concentration can be thought of as the number of tons of feed required to produce 1 ton of concentrate. The ratio, K, for a
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Calculating Copper Content in Ore Samples | True …
Ore Analysis Calculation. This calculator provides the calculation of the amount of copper in an ore sample. Explanation. Calculation Example: Ore analysis is a process used to determine the composition of an ore sample. This information is important for determining the value of the ore and for designing the appropriate extraction process ...
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Calculations of grade and tonnage for two co-products …
The model used for the grade-tonnage calculation for ore above a joint pay limit is the bivariate lognormal model as outlined in Fig. 1 (Krige2). The important features to keep in mind are that the marginal distribu-tions and the correlation coefficient are applicable to ore block values that are considered to be of an appropriate
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Common & Basic Formulas for Mineral Processing …
The formulas are based on assays of samples, and the results of the calculations are generally accurate— as accurate as the sampling, …
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Low Grade, Medium Grade and High Grade Mineralization
Drilling results for base metals are typically reported in percentage per tonne (%), while precious metals are reported in grams per tonne (g/t).As an investor, it's crucial to understand if a drill result indicates low-, medium-, or high-grade mineralization, as this can provide insight into the potential financial outcomes of the deposit.
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CIM Estimation of Mineral Resources and Mineral …
geological attributes, assay results for various sample types, drill hole survey data, weathering state, core photography, etc. Primary data can also include excavation volumes, topography, …
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Sampling Methods and Ore Reserve Estimation Techniques
Tonnage Calculation: The formula T = A × t × BD, where T is tonnage, A is area, t is thickness, and BD is bulk density. Grade Calculation : Methods for calculating average …
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(PDF) ORE DILUTION AND ORE RECOVERY
By using the factors it is possible to calculate a monetary value on improvements in the accuracy of orebody knowledge, selectivity and the effects of dilution and ore loss.
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Mining grade and sampling theory—the logical way to …
First, sample spacing is measured in the physical dimension of length. Second, tonnage is measured initially as volume, which is the cube of length. Any grade that is measured in the …
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Sample Size Calculator & Statistical Power Calculator
Power & Sample Size Calculator. Use this advanced sample size calculator to calculate the sample size required for a one-sample statistic, or for differences between two proportions or means (two independent samples). More than two groups supported for binomial data. Calculate power given sample size, alpha, and the minimum detectable effect (MDE, minimum effect of …
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ORE-RESERVE-ESTIMATIONREPORTING-PPTS (pdf)
Sample problem 1 Figure 2.3 shows a cross section of a tabular ore body with an irregular thickness as shown in the table below. Calculate the volume and tonnage of the ore body if the distance between the cross sections is 50 m and the density of the ore is 4.0 g/cm3. block True thickness observed I 22m II 11m III 27m IV 7m
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Sampling of gold ores for commercial purposes
The first is the Pulverise and Leach (PAL) system that accepts a 1 kg sample of ore up to about 5 mm in size and puts it in an iron pot with grinding balls and an accelerated CN leach solution and tumbles the pot for about one hour. At the end of the tumbling, both the ground solids (now 75 µm or so) and the supernatant solution can be ...
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Ore Reserve Estimation Methods
What is Mineral Reserve / Ore Reserve? Mineral Resources are defined as the concertation of material of economic interest in earth's crust. Ore reserves are those part of Resources for which grade and tonnage have been …
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Sampling and Estimating Disseminated Copper Deposits
If for comparison each of these holes is assumed to represent a block 200 ft. square, with 12.5 cu. ft. to the ton the holes have developed 1,800,000 tons of ore averaging 1.47 per cent, copper. The incorrect method of estimating, assuming two layers of ore separated by waste, gives 1,800,000 tons averaging 1.56 per cent, copper.
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Chapter-7-Ore-Reserve-Estimations.ppt
Measured Ore -tonnage is computed from dimensions revealed in outcrops, trenches, workings, and drill holes, and for which the grade is computed from the results of the detailed sampling. Indicated Ore - tonnage and grade are computed partly from specific measurements, samples, or production data, and partly from projection for a reasonable distance on geologic evidence.
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Geostatistical Ore Reserve Estimation
The manuscript ponders on statistical problems in sample preparation, orebody modeling, grade-tonnage curves, ore-waste selection, and planning problems, the practice of kriging, and the effective computation of block variances. The text is a valuable source of data for researchers interested in geostatistical ore reserve estimation.
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A 50-pound sample of ore is 5 percent metal, by weight, …
Since the 50-pound sample of ore is 5 percent metal, then there are 5% * 50 = 2.5 pounds of metal in the ore. Since those 2.5 pounds of metal consist of 10 times as much silver as gold, assuming the weight of gold is x, the weight of the silver will be 10x. Hence, we have x + 10x = 2.5. This gives x = 2.5/11, which is approximately 0.23.
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3 Calculation of Volume and Tonnage of Ore Deposit
3 Calculation of Volume and Tonnage of Ore Deposit For the calculation of the volume and the tonnage of ore deposits there is a va riety of available methods to choose from, each suited for a particular deposit. These methods fall into two …
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3 Calculation of Volume and Tonnage of Ore Deposit
For the calculation of the volume and the tonnage of ore deposits there is a va riety of available methods to choose from, each suited for a particular deposit. These methods fall into two …
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Mining grade and sampling theory—the logical way to …
tonnage and grade. The former is obtained by measurement of volume and density and the latter by sampling and assay. Problems arise in the selection of sample size and sample spacing and in determining the extent to which each sample assay has influence in the country rock. Exceptionally high assays affect dispro-portionately the average grade ...
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sbm/sbm methods of calculating tonnage in mining.md at …
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
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The mineral reserves & reserves estimation using …
13. Now, ore volume calculation: • Ore volume = area of the ore body * average thickness • For, first case, t(ave)=4 m, so, ore volume = 80000*4 =320000 m3 • For, second case, using length of the ore body and grade, ave …
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Ore Concentration Calculation for Mining Applications
A mine produces an average of 1500 tons of ore per day. If the ore contains 2% copper, what is the total amount of copper produced daily? What is the concentration of lead if a sample of 200 g of ore contains 40 g of lead? If a batch of 400 kg of ore contains 120 kg of manganese, what is the percentage of manganese in the ore? Calculator Apps ...
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Ore Reserve Estimation Methods – Detailed …
The basic principle of ore reserve estimation is utilizing tonnage formula. The unit of estimation is tonne (t) and formula is – Tonnage (t) = Volume (V) x Specific Gravity (Bulk density)
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Mineral Processing Operating Cost Estimate of Ore …
The 596,482 tons milled yielded $1.86 per ton at a total cost of $1.18 per ton of which $0.52 was milling cost. COSTS ON THE RAND. The distribution of costs at Randfontein Estates Gold Mining Co., which is typical of the older sand-slime type of …
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Calculation of Volume and Tonnage of Ore Deposit
For the calculation of the volume and the tonnage of ore deposits there is a variety of available methods to choose from, each suited for a particular deposit. These methods fall into two categories: reserve calculation on the basis of cross-sections and on the basis...
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Calculation Of Ore Tonnage And Grade From Drill-Hole …
THE usual method of sampling mineral deposits is to drill holes and assay the sludge or core. Though the results thus obtained may not represent the true average value of the deposit, it is on these results that estimates of practically all large orebodies are made. In a large number of cases, the results of exploitation fall far short of the estimated value of the orebody. The …
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