Large mines have low grade ores and these should establish plants to beneficiate and market the upgraded ores.Smaller mines having low grade ore also take help of other near by beneficiation plants(pooled beneficiation plants at some other cental cite) instead of setting up new plants at the mine site.This helps in improving economic of beneficiation plants.“Mineralogy is becoming increasingly important as a means to identify and quantify the different economic and non-economic minerals in deposit, and to determine the location of these minerals within any given particle. size range,” says Mintek head of commercial mineralogy projects Wendy Thompson.http://www.miningweekly.com/article/analytical-services-increasingly-important-in-mining-industry-2011-06-10

The profit function required in the economic evaluation of a ore deposits is defined. In a simplified case, this function is a hyperbolic paraboloid in coordinate systems made up by profit, assays of valuable metals and market prices. Although the present value is used as profit criterion, it is shown that the graphic profit function presentations also yield the internal rate of return of the project. These graphic equal-value presentations of the profit function are called sensitivity maps. Furthermore, with the aid of first-order derivatives of the profit function, the elasticity of the profit function with regard to all important variables can be calculated. The elasticity tables corresponding to the sensitivity maps are called sensitivity tables. The usefulness of the sensitivity maps and tables is demonstrated by a detailed analysis of a practical example containing two valuable metals,http://www.sciencedirect.com/science/article/pii/0148906274908833

Mining companies are in need of an organizational transformation to gradually align its operating costs to international standards.. To match productivity, they will need to invest in new technologies, improve processes in planning and execution of projects, and institutionalize a comprehensive risk management framework. Despite increasing demand for copper as the developing world experiences economic growth, the economic and environmental impacts associated with increased production rates and declining ore grades (particularly those relating to energy consumption, water consumption and greenhouse gas emissions) will present barriers to the continued expansion of the industry. For these reasons peak mined copper production may well be realised during this century.http://www.sciencedirect.com/science/article/pii/S0921344913002127

Interesting question because it is an important factor to consider for every mining industry before setting up a plant. Factors such as the geological aspects including ore analysis through sophisticated instrumental characterization through XRD, XRF, SEM, EPMA, MLA, FE-SEM EDAX and chemical analysis can provide details before choosing out any experimental method. This can help save lot of time and can help determining the kind of mineral activity before proceeding for plant setup. After choosing a method, the process can be scaled up from lab to pilot scale can further considered for economics.

Considering for a plant setup, techno-economics plays a very important factor. To improve the supply of non-ferrous metals and economics the small mines can cluster together to setup new beneficiation plants rather than operating alone. This can help improve the economics. Also decision to choose an appropriate method keeping environmental aspects and economics in view can improve the overall productivity. The costs for sophisticated analytical facility can also be clustered together to minimize costs for one mine though the output can be the same for all.

The setting up of beneficiation plant in mining areas reduces environmental degradation.Minining companies can gain profit by selling mine waste for land filling,brick making and road construction.

Technical Report Reclamation of Mine Regions at Bisgod: Approaches and Challenges