China
Africa
Explore chapters and articles related to this topic
Boilers and Fired Systems
Published in Stephen A. Roosa, Steve Doty, Wayne C. Turner, Energy Management Handbook, 2020
A suggested approach for assuring the viability of coal conversion is: Contact the original boiler manufacturer and determine via a complete inspection the actual modifications that would be required for the boiler.Determine if the site can accommodate coal storage and other associated equipment, including unloading facilities, conveyors, dust abatement and ash disposal.Select the type of coal to burn, considering cost, availability, and pollution restrictions. Before final selection of a coal, it must be analyzed to determine its acceptability and effect on unit rating. For any installation, final selection must be based on the coal’s heating value, moisture content, mineral matter content, ash fusion, chemical characteristics and grindability.Assess the economic feasibility.
The Food-Energy Problem
Published in Maurice Lévy, John L. Robinson, Energy and Agriculture: Their Interacting Futures, 2017
Maurice Lévy, John L. Robinson
The extraction, transport, and combustion of coal pose a number of direct and serious hazards to human health and safety, of which the most familiar are: aggravation or causation of public disease by air pollution from coal combustion, with particulate matter and oxides of sulfur thought to be the biggest dangers; accidents and black-lung disease befalling underground coal miners; and hazards to worker and public safety in the form of accidents in the transport of coal by train and truck (Office of Technology Assessment, 1979). All these hazards are susceptible to being reduced substantially by means of available technologies and management practices, such as pollution control devices on power-plant stacks, better miner training and coal-dust abatement for underground mines, and overpasses and underpasses at train crossings. It must also be emphasized that the shocking incidence of disease often attributed to coal-produced air pollution in technical and popular articles alike – 100 to 200 deaths per large power plant per year – fall at the high end of a range of scientific uncertainty that extends down to zero on the low end (Lave and Seskin, 1977; Morgan et al., 1978; U.S. National Academy of Sciences, 1978).
Ferroalloys Waste Production and Utilization
Published in Sehliselo Ndlovu, Geoffrey S. Simate, Elias Matinde, Waste Production and Utilization in the Metal Extraction Industry, 2017
Sehliselo Ndlovu, Geoffrey S. Simate, Elias Matinde
During the sintering process, manganese ore and coke breeze are mixed with binders and return fines from dust abatement systems and are heated to about 1200°C in a sinter grate to form sintered manganese oxides bound in fayalite and silicate phases (Pienaar and Smith, 1992; Jorma et al., 2001; McDougall, 2013; Tangstad, 2013a). As discussed in Chapter 4, the emission of particulate dusts, volatile organic matter, and noxious gases is particularly problematic in the sintering process. However, the off-gases generated from the sintering process are usually de-dusted using electrostatic precipitators and fabric filters and recycled back into the process (European Commission, 2014). Further technical details on the sintering process and sinter product specifications in the production of manganese alloys were highlighted in detail by Olsen et al. (2007).
Evaluation of atmospheric dust deposition rates and their mineral characterization in copper and iron mining areas, Singhbhum, India
Published in Journal of the Air & Waste Management Association, 2020
Mukesh Kumar Mahato, Abhay Kumar Singh
The present study was carried out in the copper and iron mining areas of East and West Singhbhum. The highest dustfall rate occurred at Adityapur industrial area, East Singhbhum, and the highest dustfall occured at the Hathigate, West Singhbhum, which is under the influence of extensive traffic load. The atmospheric dustfall levels were found to be higher during the summer season due to increased dispersion owing to high wind speed during the summer. The lower rates observed during the winter season may have been due to the monsoonal rainfall washout and higher relative humidity. The major minerals found in the dustfall samples of copper mining area are quartz, muscovite, chlorite, calcite, chalcopyrite, albite, gypsum, and dolomite. In the dust samples of iron mining area, the major minerals identified are quartz, cristobalite, hematite, magnetite, biotite, albite, ilmenete, pyrite, rutile, and dolomite. The present study considered the extent of dustfall rates and their mineral characteristics. Thus, an immediate need is there to monitor dust pollution in the study area and implement suitable dust control system viz. wet dust suppression and airborne dusts capture for dust abatement.