The results of a study of the mineral, chemical, and radionuclide compositions of ash and slag waste of the Berezovsk state regional power plant (BGRÉS-1) and the capping of the Berezovskii-1 coal mine suggest disposal of the waste into the mined-out space. The ash and slag waste and the capping are composed of low-toxicity materials and do not endanger the …
The specific surface area of slag and SS, obtained from Qingdao Material Co., Ltd. (China), is 406 m 2 /kg and 452 m 2 /kg, respectively. Activity index tests of slag and SS were performed according to the standard GB/T 2847–2005 (China). The 28-day activity index of slag is 96.8%, according to the results, while the value of SS is 76.2%.
In the 50 years (give or take a few) that this sight has been entertaining the public, more than 130,000,000 tonnes of slag has been dumped across the 500-acre disposal area east of the smelter.
However, recent advancements in technology and innovative practices present a promising solution: transforming mine waste into valuable resources. This article explores …
The results of a study of the mineral, chemical, and radionuclide compositions of ash and slag waste of the Berezovsk state regional power plant (BGRES-1) and the capping of the Berezovskii-1 coal mine suggest disposal of the waste into the mined-out space.
The mining industry faces a number of challenges that include rapid depletion of high-grade deposits, high energy cost for metal production, and growing environmental concerns associated with mining waste disposal. Copper slag is one of the mining wastes that is raising growing concern due to the huge volumes being produced and dumped annually ...
1. Introduction. Coal has remained China's most important energy resource for a long time. Coal gasification is the core technology of clean and efficient coal conversion, and is the basis of technologies such as coal-to-chemicals, coal-to-oil and IGCC power generation [1], [2].GFS is the high carbon content fine particles produced in the coal gasification process, …
The activities involved in the intricate process of mining range from metal extraction (precious metals, ferrous alloys, and nonferrous materials), mineral beneficiation (gypsum, salt, kaolin, sulfur, and phosphate), fuels (hard coal, steam coal, petroleum, and coking coal), smelting, refining, and remediation [] [] [].The process of extraction produces significant …
Copper slag is one of the mining wastes that is raising growing concern due to the huge volumes being produced and dumped annually worldwide. These huge quantities of slag …
This review paper explores available literature on the main techniques of mining tailing recycling and reuse and discusses leading technologies, including the benefits and limitations, as...
Utilization of mine tailings via geopolymerization is a promising approach to convert them into value-added products. In this method, development an affordable and effective activation technology ...
Years of field monitoring results show that backfilling the salt mine with alkali slag and salt mud can effectively restrain the surface subsidence and prevent surface collapse. ... the waste water-based drilling fluid is mixed with the solid waste with large particles at the salt mine disposal site in China, so that the solid waste with large ...
Eventually, this formed a regional model of sustainable development that included the recycling of magnesium slag solid waste, mine backfilling, and goaf treatment. ... domestically and abroad face an immediate need to address the issue of space-time interference between mine solid waste disposal and coal resource mining, and to resolve the ...
11. Waste Produced By Mining Activity WASTE DESCRIPTION TAILING mine dumps, culm dumps, slimes, tails, refuse, leach residue or slickens, are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore. SLAG Slag is the glass-like by-product left over after a desired metal has been separated (i.e., …
Mine filling can consume a large amount of solid waste, which is a good way for the large-scale application of GS. For example, Xin et al. proposed a new type of aeolian sand–cement-modified GS-paste filling (ACGPB) model, which realized safe disposal and resource utilization of hazardous waste (Xin et al. 2022b).
Strict legal regulations regarding the disposal of tailings have forced mining enterprises to control the tailings more tightly and act in a much more controlled manner. ... compared to other by-products that produced at high temperature (e.g., slag). This condition makes mine tailings less chemically reactive during the geopolymerization ...
Geopolymerization is a promising technique for mine tailings disposal. Lower strength was noticed using mine tailings as a single precursor. Pretreatment could effectively enhance the reactivity of mine tailings. Novel technologies are needed for geopolymers …
The extraction procedure toxicity was effectively decreased by the harmless disposal when the proportion of cement and manganese in the whole mine slag was 60%, and the content of heavy metals in ...
Manganese mine slag was the salvage in the course of manganese producing. Many matters shall be extracted by rain eluviation and then turn into the water and soil to pollute environment. The water content and extraction procedure toxicity of the manganese waste residue were studied. Combining solidification additive was used to process the manganese waste residue …
Due to their high crystallization degree, mine tailings usually exhibit little reactivity in alkaline solutions compared with blast furnace slag and metakaolin, as reported by Obenaus-Emler et al. (2020), who explored the applicability of mine tailings from different sources worldwide as geopolymerization precursors.
In this study, salt sludge, steel slag, ground granulated blast furnace slag, and gold tailings were used to prepare all-solid waste fluidized filling material for filling mine void areas, which ...
Abstract To completely replace Portland cement for mine backfilling, MSWI fly ash (FA) and solid metallurgical wastes (ground granulated blast furnace slag, steel slag and flue gas desulphurisation gypsum) were used to prepare fly ash-slag-based binder (FBB). The effect of FA content on the hydration and Pb stabilization mechanisms of the FBB was investigated. When …
Co-landfill of incineration slag and municipal solid waste (MSW) is a main method for disposal of slag, and it has the potential of promoting methane (CH 4) production and accelerating landfill stabilization.Four simulated MSW landfill columns loaded with different amount of slag (A, 0%; B, 5%; C, 10%; D, 20%) were established, and the CH 4 production characteristics and …
8. The Mine and Quarries Act 1954 The Royal commission on safety in coal mines (1935 to 1938) was set up " to inquire whether the safety and health of mine workers can be better assured by extending or modifying the principles of the general provisions of the Coal Mines Act, 1911". The Second World War ( 1939 to 45) and the Nationalization of the coal …
Costs of disposing of steel slag are estimated based on the present method and a proposed alternate method for a steel mill in the Pittsburgh area. Estimated cost data were calculated by the Bureau of Mines and do not reflect the investment and operating costs and credits of a specific steel mill and processing plant. The alternate method of steel slag disposal would result in an …
1. Introduction. Mine tailings are solid waste residues generated during the exploitation of mineral resources and contain substantial quantities of heavy metal [1, 2, 3, 4].The disposal of untreated tailings using tailing ponds not only requires large areas but also raises serious concerns regarding mine safety, the economy, and the environment [5, 6, 7].
Reuse of mine wastes allows their beneficial application, whereas recycling extracts resource ingredients or converts wastes into valuable products. Yet, today, many of the proposed reuse and recycling concepts for mine wastes are not economic. Consequently, the great majority of mine wastes are still being placed into waste storage facilities.
The potential impact of the open coal depository and the slag disposal of the Plomin thermal power plant (PTPP) on the composition of the surrounding soils was investigated. A comprehensive approach taken included analyses of mineral composition, potentially toxic element content, their bonding properties, distribution to specific geochemical fractions in the …
Semantic Scholar extracted view of "Effects of slag-based cementitious material on the mechanical behavior and heavy metal immobilization of mine tailings based cemented paste backfill" by Fawen Zhang et al. ... socio-environmental conflicts related to the development of mining-metallurgical processes and the responsible disposal of mine ...
Our recent work has demonstrated the co-disposal of abandoned mine tailings (AMT), ground granulated blast-furnace slag (GGBS), and incineration fly ash (IFA) of municipal solid waste as an environmentally, economically, and technically feasible approach for manufacturing unfired bricks (Wang et al., 2023).
The disposal of MT is one of the most substantial causes of ecological damage caused by the mining industry. This is not unexpected given the fact that the amount of …
Utilization of mill tailings, fly ash and slag as mine paste backfill material: review and future perspective. Constr. Build. Mater. (2021) ... Melting furnace slag (MFS), a by-product of the co-disposal of waste incineration fly ash and metallurgical dust sludge, has potential hydration properties, and its large accumulation also poses a ...
Civil-engineering document from College of Charleston, 39 pages, THE COPPERBELT UNIVERSITY School of Mines and Mineral Sciences Environmental Management (CE 561) Lecture 9 - Disposal of Solid Waste from Mining Processes I Prepared By Mrs. Y.C. Namiluko 2021 LECTURE OUTLINE • INTRODUCTION • TYPES OF MINING OPERATIONS
In this paper, the synergistic reaction effects of solid waste modified magnesia slag (MMS), coal gasification slag (CGS), and desulfurized gypsum (DG) as magnesium-coal slag based cementitious ...
