TN1071 : Determining the appropriate uses of construction stone waste from a technical, economic and environmental point of view (Case study: Mines of the Eastern District of Isfahan Province)
Thesis > Central Library of Shahrood University > Mining, Petroleum & Geophysics Engineering > MSc > 2022
Authors:
[Author], رامین رفیعی[Supervisor], Mohammad Ataei[Supervisor]
Abstarct: The stone industry and stone mines are one of the unique capacities of the country for gross national product, reducing imports and increasing exports, as well as creating many employment opportunities. Unfortunately, despite the abundant and rich ore resources in the country, this huge industry is facing many problems in the process of extraction and processing, and despite the fact that, in terms of the variety of building stones, in terms of the amount of reserves and extraction, it is among the first five countries in the world. It has very little in the world market transactions. One of the problems we face in the process of extracting and processing building stones is the production of waste and unused stones in quarrying units, which are left next to mines or in the environment and cause environmental problems. They create an environment and also destroy the appearance of the environment. In this research, the problems of the extraction process have been investigated and solutions for improving the extraction process and more productivity of this industry have been presented. In this research, solutions for using construction stone wastes in other industries such as paper industry, calcium supply for animal and poultry feed and stone products industry have been presented. In this research, it has been tried to investigate the benefits of using construction stone waste from environmental, technical and economic aspects. The use of construction stone waste in the paper-stone industry and replacing it instead of cellulose paper has many environmental benefits, because it avoids cutting down trees and producing carbon dioxide gas and warming the earth. It is prevented and greatly reduces paper production costs and stone waste is reduced. Setting up a stone paper factory with a capacity of 10,000 tons per year requires 5 million dollars in capital, and the return of this capital will take about one year. The higher the production capacity of the stone paper factory, the higher the investment cost and also the shorter the rate of return on investment. In case of expansion of paper stone in the world, Iranian mines can be the supplier of raw materials for this industry abroad, and if 1 million tons are realized, the income of 400 billion tomans will be given to mines. Also, this possibility of production can be used as a supplier of calcium for feed and active. Among these three methods, the paper industry and the animal and poultry feed industry can use a significant amount of waste from stone mines. More than one billion tons of animal and poultry feed is consumed annually in the world, which requires more than 10 million tons of calcium. Also, more than 400 million tons of paper are consumed annually in the world, of which 2 million tons are in Iran. On average, 750 kilos of powdered rock are needed to produce 1 ton of paper. Due to the fact that it does not require water, the paper and stone industry is a useful industry for Iran, and there is the potential of setting up several production lines in different regions of the country.Also, in the introduction section of the study area, a discussion of tourism in mining has been raised.
Keywords:
#Key words: stone #stone paper #environment #calcium #artifacts #waste #tailings. Keeping place: Central Library of Shahrood University
Visitor: