Question: Calculate the breakeven stripping ratio (BESR) in mining and processing a 0.60% copper ore deposit given the following information: (3 points) Selling price of copper in concentrate: $1.63/kg Surface mining costs: $6.80/ton Surface stripping costs: $7.50/ton. Overall (Milling & Smelting) recovery: 92%.

Stripping ratio is the ratio of the volume of waste rock stripped off to the volume of ore exploited during the process of surface mining. It indicates the volume of waste rock required to be stripped for mining per cubic ore. Stripping ratio (see Fig. 1) is an important technical-economic indica-tor in open-pit mining, which reflects the eco ...

Numerical Calculation of. Stripping Ratios. Average End Area from Topo. • Use a digitizer or Autocad Digitizing. Function. • 1700 ft Contour Area is 53.452,860 ft2. • sits directly above coal seam - half way. down to next slice is 0. • sits 50 ft below 1750 ft Contour Area halfway up to next slice is 25 ft.

Basinwide discrete and cumulative distributions of resource in-place as a function of (1) oil shale grade, (2) Mahogany zone thickness, (3) overburden thickness, and (4) stripping ratio (overburden divided by zone thickness) were determined for both basins on a per-acre basis, and a resource map showing the areal distribution of these ...

May. 17, 2023 01:50PM PST. Stripping ratios aren't often discussed, but they can be an early and important indicator for mining projects. Here's what investors should know …

Harga batu bara yang mengalami tren penurunan telah mengakibatkan tergurusnya laba perusahaan batu bara.Untuk tetap mempertahankan kinerja perusahaan, PT Bukit Asam Tbk (PTBA) melakukan upaya efesiensi dengan cara mengurangi stripping ratio.. Stripping ratio adalah perbandingan antara volume masa batuan yang dibongkar …

Stripping ratio is the ratio of the volume of waste rock stripped off to the volume of ore exploited during the process of surface mining. It indicates the volume of …

April 10, 2018. A strip ratio, or stripping ratio, is an important measurement related to the open-pit mining process. It represents the amount of waste material, also known …

Berikut adalah langkah-langkah menghitung stripping ratio nikel: 1. Tentukan Volume Overburden. Volume overburden adalah volume batuan pengotor yang harus dihilangkan untuk mencapai bijih nikel yang diinginkan. Volume overburden dapat dihitung dengan rumus berikut: Volume Overburden = Lebar x Panjang x Tinggi.

To calculate the effective stripping ratio of each coal seam see Figure 1. The effective stripping ratio is derived from dividing a coal seam overlaying waste material thickness in meters by the coal seam thickness in meters. List the depth from surface to the top of each coal for the depth below surface.

stripping ratio (nisbah pengupasan) : Perbandingan antara jumlah volume lapisan penutup yang perlu disingkirkan ( dalam meter kubik) dan atau ton bahan galian yang ditambang. stripping ratio (SR) : Perbandingan jumlah volume batuan (OB, waste) yang harus dibongkar untuk mendapatkan sejumlah (ton) mineral/bahan tambang (Coal â€" Ore ...

Mining Methods, Surface mining. 2.1) Introduction. As the first step for long or short-range planning, the limits of the open pit. must be set. The limits (ultimate pit) define the amount of ore ...

Stripping ratio is the ratio of the volume of waste rock stripped off to the volume of ore exploited during the process of surface mining. It indicates the volume of waste rock …

The Instantaneous Stripping Ratio (ISR) is the stripping ratio for a given push back, where a tiny slice of material, i.e., ore and/or waste, is removed from a pit wall. This …

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Calculating stripping ratios and determining profitability. At their most basic, strip ratios may be calculated by dividing overburden thickness by ore thickness. For …

Stripping Ratio adalah perbandingan antara volume masa batuan yg dibongkar (lapisan tanah penutup) dengan batubara yg di ambil atau bisa juga disebut dengan besarnya volume tanah lapisan penutup yang harus dibongkar untuk mendapatkan 1 ton batubara. 1.2.Jenis Stripping Ratio Rumusan umum yang sering digunakan untuk menyatakan …

Since coming into operation, Argyle produced more than 865 metric carats (Mct) of diamonds, with an average stripping ratio in the open pit of approximately 7t of waste being moved for each ton of ore mined. Peak production was in 1994, at 42.8Mct. The pit was so deep … See more

Open Pit Design Economics. Table of Contents. The economic limit of an open pit mining operation is dictated by three basic elements- cut-off grade, stripping ratio and slope angle. Although these elements are interrelated, they are functions of a number of independent parameters, which are too numerous to list completely.

The stripping ratio at mines has increased 6.8% since a low in 2016, reaching 2.51-to-1 in 2022. An essential measurement in open-pit mining is the strip (or stripping) ratio, which reflects the volume of overburden, or waste, that must be moved to recover ore. To calculate the stripping ratio, the tonnage of waste material is divided by …

Download reference work entry PDF. Mining and stripping of open pit is the method of stripping rocks and mining ores from open-pit mine according to a certain mining order. In open-pit mining, there is little difference between the process of stripping rock and mining ore. The equipment on a working bench can be used for both mining and stripping.

This requires the stripping of: 2A5 = (150)2 -(125)2 = 6,875 ft2 The instantaneous stripping ratio is: SR (instantaneous) = 6,875 = 1.375 5,000 The overall stripping ratio with bench 8 removed is: SR (overall) = 22,500 = 0.60 37,500 4 Bench 9 For bench 9: A8 = 5, 000 ft2 2A7 = (175)2- (150)2 = 8,125 ft2 The instantaneous stripping ratio is: SR ...

This term is usually defined as the inverse ratio to the distribution ratio, i.e. in aqueous-organic systems the aqueous phase concentration of solute is the numerator and the organic phase concentration is the denominator. ... Citation: 'stripping ratio' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and ...

You will recall that the maximum allowable stripping ratio, SR max, also called break-even stripping ratio, is the maximum amount of overburden/waste that can be extracted per unit of ore at the economic …

A strip ratio, or stripping ratio, is an important measurement related to the open-pit mining process. Put simply, it represents the amount of waste material, also known as overburden, that must ...

Pengertian Break Even Stripping Ratio. Break even stripping ratio adalah ukuran efisiensi tambang yang digunakan untuk menentukan rasio volume tanah penutup yang harus dihapuskan untuk menghasilkan satu unit bahan tambang yang diinginkan. Dalam industri pertambangan, stripping ratio didefinisikan sebagai perbandingan …

The stripping ratio increases when mine goes deeper while the amount of recovered ore remains constant in inclined deposits. In this instance, the amount of overburden increases as well. Also, as ...

Perhitungan Stripping Ratio dan Overburden Ratio Volume overburden dan cadangan batubara yan g dihitung dari ketiga batas pit (F -20, F-30, F-40) dengan

Two major technical constraints involved in the determination of such schedule are: (i) the feasible combinations of ore and waste production (stripping ratio), and (ii) the ore production rate that meets the mill feed requirements. Optimization methods have long been used to improve mine design and life-of mine production schedules [1–12].

encompasses 120 Mt ofore and 315 Mt of waste at a stripping ratio of 2.6: I, and will extend the mine life to around the year 2004. Studies have also been initiated to review …

Argyle is the world's largest producer of natural diamonds and produced over 40 million carats in 1993 from seven million tonnes of lamproite ore ... encompasses 120 Mt ofore and 315 Mt of waste at a stripping ratio of 2.6: I, and will extend the mine life to around the year 2004. Studies have also been initiated to review optimwn pit

is defined as the stripping ratio. Stripping ratios of 2:1 up to 4:1 are common in large mining operations. Ratios above 6:1 tend to be less economically feasible depending on the type of ore extracted. Once removed, overburden can be used for road and tailings' construction or may have a non-mining commercial value as a backfilling material.

argyle ratio de stripping Lecture 9 Absorption and stripping (1) • Because stripping is not perfect, recycled absorbent contains solutes (absorbates) Absorption Factor & Stripping Factor • Absorption factor, A = L/(KV) Component A K-value Water 89.2 0.031 Acetone 1.38 2.0 Oxygen 0.00006 45,000 Nitrogen 0.00003 90,000 Argon 0.00008 35,000

The quantity of ore mined and waste rock (i.e., overburden or barren rock) removed to produce a refined unit of a mineral commodity, its rock-to-metal ratio (RMR), is an important metric for understanding mine wastes and environmental burdens. In this analysis, we provide a comprehensive examination of RMRs for 25 commodities for …

Stripping ratio dapat dihitung dengan cara menghitung volume overburden, volume batubara, dan kemudian membaginya untuk mendapatkan nilai stripping ratio sesuai dengan rumus yang telah dijelaskan di atas. Penutup. Demikianlah pembahasan tentang cara menghitung stripping ratio secara lengkap. Dengan mengetahui stripping …

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