Calculating Stripping Ratios for Area Strip Mines Mnge 315 Dr. B. C. Paul spring 2003 revised 2010 Note – These notes contain information considered common knowledge to those familiar with Strip Mining. Books such as “Elements of Practical Coal Mining” and SME’s “Surface Mining” were specifically referenced fStripping Ratio as a

Mar 02, 2010 The stripping ratio (SR) refers to the amount of waste material that must be removed for a given amount of ore. 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 section presents the ISR calculation for a steeply pitching

Jul 26, 2017 The units for stripping ratios can vary and usually depends on the geological properties of the deposit and the commodity mined. It can be expressed in tonnes (t), or cubic meters (m 3).Usually for coal, cubic meters (m 3) or tonnes (t) are used.However, for hard rock mines where the geology is usually complex with the presence of various rock types, tonnage (t) is usually preferred

Stripping Ratios, Pit Limits & Cutoff Grade Optimization. F. Barcelonistas ... Optimal production scale of open pit mining operations with uncertain metal supply and long-term stockpiles ... A review of cut-off grade policy models for open pit mining operations. By Iv n C rcamo. Optimum cut-off grade’s calculation in open pit mines with

The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process. In relation to its application in the mining of ore, the utility of the stripping ratio is the determination of the approximate ratio of waste material that must be moved in order to reach a certain ratio of ore

Oct 31, 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 as

Cross section of surface mine in Problem 6.2. 6.2 Calculate the maximum stripping ratio and the overall stripping ratio for the open pit shown in Figure 6.10, given the following conditions: Stripping allowance $1.50/ton ($1.65/tonne) of ore Stripping cost (e = 1) $0.25/yd ($0.33/m ) of overburden Pit slopeo 65 Berm, at top of ore 30 ft (9.1

3.2.6: Maximum Allowable Stripping Ratio (SRmax) Earlier in this lesson, we looked at the maximum stripping ratio, and we did it for coal seam. 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

stripping ratio calculation in mining. Stripping ratio Wikipedia. In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to be handled in order to extract some tonnage of ore.For example, a 3:1 stripping ratio means that mining one tonne of ore will require mining

Stripping ratio: the ratio of the amount of stripping to the amount of mined ore. In addition to mining ore, open-pit mining also requires a large amount of stripping of rock, which is an important difference between open-pit and underground mining; Average stripping ratio: the ratio of the total stripping Vp in the mining boundary to the mined

Jun 06, 2009 Yes, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock

AVERAGE STRIP RATIO: Total waste divided by total ore within the ultimate pit. CUTOFF STRIPPING RATIO: Costs of mining a ton of ore and associated waste equals to net revenue from the ton of ore

The program will first determine the lowest Instantaneous stripping ratio in the calculation area. The program will then determine in which direction the stripping ratio increases the least. If mining were to start in the area of lowest stripping ratio and then move one grid node in the direction of least increasing stripping ratio, the

Jan 09, 2016 vii) Stripping Ratio The ratio is most commonly expressed as: Strip Ratio (SR) is the mass of waste to be mined to obtain one unit mass of ore. Waste (tons) SR = ----- Ore (tons) For example, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock

pit gold mining project named “Coriorcco Gold”, including a project description, an explanation of the main operational parameters, and an economic evaluation of the project. In the economic evaluation, variables as the breakeven cutoff grade (BCOG), stripping ratio

Other articles where stripping ratio is discussed: coal mining: Choosing a mining method: …calculated with the aid of stripping ratios, which represent the amount of waste material that must be removed to extract a given amount of coal. Stripping ratios can also consider the selling price of coal, and a certain minimum profit can be added to the total cost of producing and

Overall stripping ratio is the proportion of the whole volume of overburden in the open-pit to the total reserves of the mineral. In other words, according to Equation 1, the ratio of the total volume of waste to the ore volume is defined as overall stripping ratio [8]. HGP where, NPV calculate Where, OSR: overall stripping ratio

Jun 30, 2021 This is the formula of stripping ratio :-Stripping Ratio :- BREAK EVEN STRIPPING RATIO :-Or, QUARRIABLE LIMIT:- The ratio of mineral bed thickness to the Overburden thickness for Mining of coal is as follows :-Mechanized Quarrying :-with shovel dumper – 1:4 to 5; with dragline – 1:8 to 10; bucket wheel excavator – 1:3 to 4 And with

After going through this lecture you will be able to 1. list and define stripping ratios (K, C) 2. calculate various stripping ratios for given situations (C, Ap) 3. explain the influence of stripping ratios on planning decisions (A, S) 4. assess the most economic method of mineability of a deposit by surface mining or underground mining from the