Stripping Ratio Calculation In Mining
- صفحه اصلی
- Stripping Ratio Calculation In Mining
A mining entity may continue to remove overburden and to incur stripping costs during the production phase of the mine. The material removed when stripping in the production phase will not necessarily be 100 per cent waste; often it will be a combination of ore and waste. The ratio of ore to waste can range from uneconomic low grade to
به خواندن ادامه دهید
To address the problem of excessive local secondary stripping between adjacent mining areas in open pit mines caused by internal row raising, a multivariate function was fitted to the model of the main mining seam of Zhundong open pit coal mine in Xinjiang, and the different locations of the end gang of the second mining area were …
به خواندن ادامه دهید
Based on the economic stripping ratio to locate a reasonable boundary position, this paper conducts linear fitting analysis on the data in the table, the line graph is shown in Fig. 10, and the ...
به خواندن ادامه دهید
Surface mining – involves stripping off overburden to access coal resources. Overburden is the layers of soil and rock that overlie a coal bed. Surface mining is limited by stripping ratios: ratio of the volume of overburden (in cubic yards) to the quantity of coal (in short tons). the limit of surface mining (maximum economic stripping ratio) is
به خواندن ادامه دهید
Stripping ratio can refer to the entire reserve or a particular mining stage. Units can be weight or volume, imperial or metric, even linear measurements of depth. The SG of waste usually differs from that of …
به خواندن ادامه دهید
The strength reduction method and the limit equilibrium method were used to calculate the safety factor under each working condition and point out the potential instability areas. ... the design of the open-pit mining method for ore bodies within a reasonable stripping ratio of the open-pit boundary, and the underground mining …
به خواندن ادامه دهید
The stripping ratio is expressed by this relation with emphasis on exploitation cost of 1 tonne of ore in UG mining and in OP mining, as well as, removal cost of waste in relation to 1 tonne of ore extracted by OP mining. As OP mining deepens, the stripping ratio usually increases, increasing the overall mining cost.
به خواندن ادامه دهید
The main topics that will be discussed in this chapter will include an introduction into the general features of open pit mining, ore body characteristics and configurations, stripping ratios and ...
به خواندن ادامه دهید
The relationship between the length of the working line and the realm stripping ratio in the overlapping area of the two mining areas is discussed, and the variation in the realm stripping ratio ...
به خواندن ادامه دهید
In order to determine transition depth from open-pit to underground mining on the basis of the allowable and economically feasible overall stripping ratios, an economic-mathematical equation is first introduced.
به خواندن ادامه دهید
Download stripping ratio and break even stripping ratio and more Lecture notes Mining Engineering in PDF only on Docsity! STRIPING RATIO AND BESR IN OPEN PIT MINING Cont. 2.2.2 Open pit mining Mainly refers to the situation in which the surface mines are rarely above a few hundred meters radius in area extend (width and length) but proceed …
به خواندن ادامه دهید
The second metric is applicable to shallower deposits that are being evaluated for surface rather than underground mining, and it is known as the stripping ratio. Let's start with stripping ratios, and let's use a shallow coal seam for our example. Stripping Ratios. The coal seam will be underneath layers of soil and rock.
به خواندن ادامه دهید
The profit function can also be formulated in unit values (per ton or cubic meter of ore), by assigning a unit profit function L ′ ($/h), which is given by (2) L ′ = T U V − M − E R − B − F P. In all these variables, there are two geological characteristics, which have great importance: the stripping ratio R and the grade of ore T.It is therefore …
به خواندن ادامه دهید
The strip ratio (SR) is the simplest measure of mining efficiency. Defined as the weight of overburden (or waste ore) divided by the weight of oil sands ore, a strip ratio of 2 is considered high but …
به خواندن ادامه دهید
stripping ratio is the main tool to manage the mining mode at pre-set production rate of the open pit. In most cases, graphic representation of the stripping mode is a broken line.
به خواندن ادامه دهید
Bench Width Calculation During the Sinking Mining Mode software: asoftware logic; b -program window This software takes into account area of the zone limited by the upper and lower benches, bench ...
به خواندن ادامه دهید
By analyzing and comparing the stripping ratio, mining life of the district, fault influence, difficulty of transition connection in the mining districts, the convenience of transportation system ...
به خواندن ادامه دهید
Note: (1) Stripping ratio is defined as the ratio of OBR to Coal produced in Open Cast mining. (2) Meghalaya OBR figures are not known and not reported. (3 ) While calculating stripping ratio, if OBR is not reported, corresponding production was excluded to find public/private sector OBR ...
به خواندن ادامه دهید
For the mining and processing of mineral commodities, the quantity of rock required to be mined varies significantly by commodity and deposit, and depends on factors including ore grades, deposit type, mining method (e.g., open pit or underground), ore body depth, and stripping ratios even for a single mineral commodity.
به خواندن ادامه دهید
In coal mining: Contour strip mining. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be …
به خواندن ادامه دهید
The strip ratio is the amount of waste rock, or overburden, that must be removed in order to get to the mineralized rock (ore). The strip ratio is calculated by dividing the thickness of the ...
به خواندن ادامه دهید
Calculating stripping ratios and determining profitability. At their most basic, strip ratios may be calculated by dividing overburden thickness by ore thickness. …
به خواندن ادامه دهید
In this formula, Vp is the total amount of stripping in the pit limit; and AP is the total amount of ore in the pit limit. The average stripping ratio indicates the total economic effect of …
به خواندن ادامه دهید
Use our Price Earnings Ratio Calculator to calculate the P/E ratio and evaluate a company's stock valuation quickly and easily.
به خواندن ادامه دهید
Li et al.4 derived a formula to calculate the eect of mining area width on the stripping ratio and constructed an optimisation model of mining area width and end gang coal compression height ...
به خواندن ادامه دهید
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 …
به خواندن ادامه دهید
The profit can be generated if mining project has the lower stripping ratio (R) compared to the maximum allowable stripping ratio (R. max) and the higher average grade of ... After determining the optimal cut-off grade, we can calculate the total profit using Equation (7). Y ' = (a. 0 + a. 1. T. c)( c. 1. UV −c. 1.
به خواندن ادامه دهید
This ratio is not static; it evolves with the life of the mine. In the initial phases of a mine's development, the strip ratio may be relatively low as the surface ore is accessed. However, as mining progresses deeper, the overburden increases, thus inflating the strip ratio and challenging the economic calculus of continued operation.
به خواندن ادامه دهید
The concept of the strip ratio is pivotal in the domain of open-pit mining, serving as a barometer for the economic viability of a mining operation. It is the mathematic expression of the volume of overburden or waste material required to be handled in order to extract a unit volume of ore.
به خواندن ادامه دهید
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 …
به خواندن ادامه دهید
Other mining operational parameters that are determined when designing the ultimate pit limit include width, length and depth of mined pit, haul roads, location of waste dump, stripping ratio, mine life, minable ore …
به خواندن ادامه دهید
178 SURFACE MINE DEVELOPA Scale 100 ft (30 m) Shale Surface TORICAL Sandstone Ore Od FIGURE 6.10. 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 …
به خواندن ادامه دهید
The determination of this depth and its analysis is the subject of this paper. In order to determine transition depth from open-pit to underground mining on the basis of the allowable and economically feasible overall …
به خواندن ادامه دهید
چه بخواهید با ما کار کنید و چه علاقه مند به کسب اطلاعات بیشتر در مورد محصولات ما هستید، مایلیم از شما بشنویم.
