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Bioleaching to reprocess sulfidic polymetallic primary mining
2020.11.1 The first step of the NEMO concept consists of removing the sulfides remaining from primary bioleaching and extracting the metals in the residual material
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Studying the complexity of the secondary succession process
2016.7.1 The unfolding of the secondary succession process in the soil of open mine areas reclaimed with Triticum aestivum (wheat) was analyzed by using a polyphasic
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Secondary utilizations and perspectives of mined
2020.2.1 1. Introduction Mined underground space is formed by the exploitation of resources and minerals, especially that which remains after exploitation of solid minerals
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(PDF) Mining Waste and Its Sustainable
2018.7.2 relating to the processes and elements of mining (tailings, acid mine drainage, concentration, industrial waste, oxidation, and
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A comprehensive review of urban mining and the value
2023.3.1 The authors identified the areas with the potential for recovering copper from inactive underground power cables. According to the authors, the costs of mining
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From mineral processing to waste management and
2022.9.13 The development of geo-metallurgical approaches (for mining) and combined approaches (co-processing of secondary materials and wastes, as in the
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Microbial recovery of critical metals from secondary sources
2022.1.1 The critical metals of interest for industrial sector can come from: mining, steel processing or metallurgy processes, energy production, manufacture of electrical
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Government Support for Primary and Secondary Metal
2018.10.3 Primary and secondary metal production processes produce finished metal products that are perfect, or near perfect substitutes for each other. Today, the proportion
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The Recent Progress China Has Made in the
2021.11.14 The backfill (filling) mining method is one of the earliest methods adopted by the metal and coal mines, as it can maximize the recovery of underground mineral resources, protect the surface
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The Recent Progress China Has Made in the
2021.11.14 The backfill mining method is a widely used mining method in the major mines of China, which can maximize the recovery of mineral resources and protect the environment. Currently, major mines in
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Research on unsymmetrical loading effect induced by the secondary ...
2011.1.1 The coal pillar of 25 m in width at the mining stope with 275 m in length at LiuTa mine, the width of fracture zone and yielding zone influenced by one-sided mining can be calculated as 0.8 m and 6.0 m respectively if using the related theory above. The mining stress concentration factor of the pillar is 1.3. 3.
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Mining of novel secondary metabolite biosynthetic gene
2022.12.9 Scientific Data - Mining of novel secondary metabolite biosynthetic gene clusters from acid mine drainage. ... for the analysis process and computing power support for this project. We thank the ...
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The Secondary Use of Electronic Health Records for Data Mining
We review the factors, characteristics, limitations, and challenges that potentially affect the quality of data mining processes and the relevant methods that are used to address them. Furthermore, we conducted a comprehensive analysis on the abstracts of over 1,336 papers published between 2010–2020 to study the relationship between the data ...
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Tin processing - Mining, Concentrating Britannica
Tin smelting furnaces are one of three basic types: reverberatory furnaces, blast furnaces, or electric furnaces. Usually the operation is carried out as a batch process. The principle of tin smelting is the chemical reduction of tin oxide by heating with carbon to produce tin metal and carbon dioxide gas. In practice, the furnace feed contains ...
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Genome mining to identify valuable secondary metabolites
2023.3.21 Actinobacteria are the largest bacteria group with 18 significant lineages, which are ubiquitously distributed in all the possible terrains. They are known to produce more than 10,000 medically relevant compounds. Despite their ability to make critical secondary metabolites and genome sequences' availability, these two have not been
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Mining and Metallurgical Waste as Potential Secondary
2022.4.27 The aim of this paper is to present a chemical composition and quantities of mining and processing waste landfills material developed during historical mining and smelting. After detailed inspection, it was found that approximately 2.6 gigatons of the waste had been deposited at 1650 sites, covering almost 65 km2. More than half of this
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New to Mining? Here are the Most Common Types of Mining
2015.12.21 Crushing equipment is important to the mining process because it reduces the use of precious excavated resources and eliminates the amount of material on site. ... In some instances secondary crushing is required prior to processing of the material. Once the material is at the correct size, fraction processing can occur which could include ...
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Studying the complexity of the secondary succession process
2016.7.1 The unfolding of the secondary succession process in the soil of open mine areas reclaimed with Triticum aestivum (wheat) was analyzed by using a polyphasic approach. The study was conducted in five wheat fields with post-reclamation age 0, 5, 10, 15 and 20 years. Also data from control wheat fields outside the mining area were used.
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Review of Transition from Mining 4.0 to Mining
2023.3.24 It began in the 19th century, with coal mining for steam engines and coke production (Mining 1.0); then, manual labor was replaced by machines in primary processes at the beginning of the 20th century
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Processing of Complex Materials in the Copper
2020.7.6 In the case of Japan, special emphasis has been made to process complex secondary raw materials and industrial waste using the ability of existing smelting facilities to recover valuable metals. Figure 6
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The stages of mining: 5 lifecycle processes explained - Opens
The 5 Lifecycle Stages of Mining. 1. Exploration Prospecting Stage. This is the first and most essential step of the mining process: in order to open a mine, companies must first find an economically sufficient amount of the deposit (an amount of ore or mineral that makes exploitation worthwhile.)
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Processes Free Full-Text Data-Mining for Processes in
2019.3.11 With the rapid development of machine learning techniques, data-mining for processes in chemistry, materials, and engineering has been widely reported in recent years. In this discussion, we summarize some typical applications for process optimization, design, and evaluation of chemistry, materials, and engineering. Although the research
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Microbial recovery of critical metals from secondary sources
2022.1.1 Usually, metals are extracted from mineral deposits rich in a series of metallic elements, by specific processes belonging to the field of extractive metallurgy (Dominguez-Benetton et al., 2018), which can be classified as: pyrometallurgy, hydrometallurgy, electrometallurgy.These processes can be applied separately or in a
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Sustainable Metal Recovery from Secondary Resources
2020.7.24 Metals are indispensable materials used in every-day industrial processes (e.g. catalysts) and consumer products (e.g. electronic, automobiles, etc.) [].From 1905 to 2005 global primary mining for metals increased 19 fold [].However, primary mining is inherently unsustainable [3, 4] and comes at a high ecological footprint [].Mining
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Mining - Underground, Safety, Techniques Britannica
Mining - Underground, Safety, Techniques: When any ore body lies a considerable distance below the surface, the amount of waste that has to be removed in order to uncover the ore through surface mining becomes prohibitive, and underground techniques must be considered. Counting against underground mining are the costs, which, for each ton of
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How Does Bitcoin Mining Work? What Is Crypto Mining?
2023.10.18 Bitcoin mining is the process by which transactions are verified on the blockchain. It is also the way new bitcoins are entered into circulation. "Mining" is performed using hardware and software ...
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Sustainable Chemistry Free Full-Text Technospheric Mining of Mine ...
2021.10.13 The concept of mining or extracting valuable metals and minerals from technospheric stocks is referred to as technospheric mining. As potential secondary sources of valuable materials, mining these technospheric stocks can offer solutions to minimise the waste for final disposal and augment metals’ or minerals’ supply, and to abate
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Mycoremediation of heavy metals: processes, mechanisms,
2021.1.6 Industrial processes and mining of coal and metal ores are generating a number of threats by polluting natural water bodies. Contamination of heavy metals (HMs) in water and soil is the most serious problem caused by industrial and mining processes and other anthropogenic activities. The available literature suggests that existing conventional
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