sep 16, 2020 to quantify the potential economic importance and impacts of the metal content of the tailings, geochemical analysis of samples from auger holes and resource modelling were employed. neutral to slightly basic ph values and very low concentrations of arsenic and lead showed that acid drainage and toxic groundwater contamination (apart from cu itself) would not be a concern.
Stabilization characteristics of copper mine tailings
Innovative methodology for comprehensive and harmless
Jun 20, 2018 the leaching toxicity was used to characterize the environmental impact of tailings obtained by co-reduction and magnetic separation process. it is therefore extremely urgent to develop appropriate technology for comprehensive utilization of copper slag from both economic and environmental perspectives. sem-eds analysis of the copper
jul 01, 2019 the largest impact of primary copper on the environment was htp, which accounted for 68.66%, followed by gwp and adp, which occupied approximately 10.71% and 8.92% of the total environmental impact. other indicators, ap, pocp and ep, was 7.38%, 3.62%, 0.71%, respectively.
nov 01, 2019 results of environmental impact assessment analysis using lca technique have been summarized in the bar charts as shown in fig. 6, fig. 7, and fig. 8. a successive reduction in the point scale has been observed in the raw material part of both, midpoint and endpoint result due to a notable decrease in the cement consumption.
feb 15, 2021 this study aims to (1) conduct a comprehensive quantitative analysis of the life cycle environmental impact of the recycling of copper-based mixed wastes, (2) determine the key ecological impact factors of copper-based mixed wastes, including categories, processes, and materials, and (3) conduct a sensitivity analysis to reliably assess the impact level of the key impact factors and
Analyzing the environmental impact of copper-based mixed
aug 20, 2019 copper tailings are a fraction of fine-grained soils, which are a byproduct of metallurgical process. contamination from cts is as a result of the effluent ph, which may result in ecological changes because of toxic chemicals and heavy metals  , which are potentially hazardous to the environment if they lack proper impoundment.
Valorization of kimberlite tailings by carbon capture and
In the world of construction, cement plays a vital role, but despite its reputation and affordable prices, the cement industry faces multiple challenges due to pollution and sustainability concerns. this study aimed to assess the possibility of utilizing carbonated kimberlite tailings, a waste product from diamond mining, as a partial cement substitute in the preparation of concrete bricks.
environmental impacts of shaft and ﬂash furnace-based smelting technologies. additionally, this analysis accounts for likely technological changes in the more energy-efﬁcient ﬂash furnace smelting technologies and electricity generation from 2030 to 2050 to forecast the long-term impacts of copper
in which p 0 = 1 kpa; e 0 = initial void ratio corresponding to p 0; and c c = compression index. the fitting results of the four tailings are summarized in table 2.the compression index (c c) is 0.046 and 0.260 for the coarse and fine iron tailings, and 0.025 and 0.085 for the coarse and fine copper tailings.both the coarse and fine iron tailings display a higher compressibility than the
Environmental-social footprints of mining sector: applying
mar 18, 2021 [speed up the legislative work on the comprehensive utilization of mineral resources and comprehensively improve the level of comprehensive utilization of non-ferrous mineral resources] duan shaofu, director of the heavy metals department of the china nonferrous metal industry association: at present, china has not yet issued a law and regulations specifically aimed at the comprehensive
Progress, challenges, and perspectives of bioleaching for
May 07, 2021 the accumulation of mine tailings on earth is a serious environmental challenge. the importance for the recovery of heavy metals, together with the economic benefits of precious and base metals, is a strong incentive to develop sustainable methods to recover metals from tailings. currently, researchers are attempting to improve the efficiency of metal recovery from tailings using bioleaching
response surface methodology is used to optimize the leaching process for refractory flotation copper tailings. the proportion of the refractory combination oxide copper (chrysocolla) is 64.84%. at present, few studies have examined the leaching of chrysocolla. in this study, we examine the effects of several variables, including the amount of concentrated sulfuric acid, leaching temperature
in the world of construction, cement plays a vital role, but despite its reputation and affordable prices, the cement industry faces multiple challenges due to pollution and sustainability concerns. this study aimed to assess the possibility of utilizing carbonated kimberlite tailings, a waste product from diamond mining, as a partial cement substitute in the preparation of concrete bricks.
according to prahallada and shanthappa, (2014), copper ore tailings utilization in concrete production has a number of environmental benefits such as increasing the life of pavements and structures by improving the stability of the soil, reduction in the adverse air emissions when used in copper tailing bricks and stabilized blocks, etc.
Waste production and utilization in the metal extraction
from an environmental perspective, there is a distinction between ore bodies on the basis of their copper content. for example, wildlife deaths are more likely to occur at mines possessing copper-gold ores due to the formation of copper-cyanide complexes which is toxic to birds and bats.
Comparison of environmental impacts of deep-sea tailings
Dec 02, 2019 the environmental impacts of the last two dam failures are still under investigation. in 2015, there were 16 mines worldwide using submarine tailings disposal (gesamp 2016) as an alternative to land-based tailings storage. this paper compares submarine versus on-land tailings disposal from the perspective of environmental impacts.
the utilization of copper nickel tailing a literature survey. that would be applicable to a minnesota underground copper nickel mine. a possibility of substituting taconite tailings .. copper nickel tailing, might find application in the aluminum industry, since it contains about z9 percent .. control of du~t, and the selection of disposal sites are problems beyond the limits of thi~ survey.
jan 25, 2016 this paper presents the feasibility of incorporating copper mine tailings (mt) as a partial substitute for cement in the development of concrete. the copper mine tailings used for this study have been accumulating for several decades at the tailings dump of hindustan copper ltd. at khetri, rajasthan. hence, alternative uses of mt need to be thought while keeping in mind that the utilization
comprehensive water resource modeling, air quality impact analysis, hydrogeologic evaluation of the regional aquifers, the crown pillar, and groundwater interactions with wetlands and lakes, geophysical mapping of lake beds, and; geochemical characterization of tailings and waste rock. results
Comprehensive permitting for underground copper and
jun 05, 2021 as ore grades constantly decline, more copper tailings, which still contain a considerable amount of unrecovered copper, are expected to be produced as a byproduct of froth flotation. this research reveals the occurrence mechanism of copper minerals in typical copper sulfide tailings using quantitative mineral liberation analysis (mla) integrated with scanning electron microscopy-energy
Geotechnical properties of mine tailings
Trations of the coarse copper and fine copper tailings from the bahuerachi copper mine were about 72 and 60 wt%. test methods a series of conventional laboratory experiments were carried out to investigate the mechanical properties of the tailings, including spe-cific gravity, grain size distribution, atterberg limits, and hydraulic conductivity.
jun 15, 2021 cyanide tailings are industrial hazardous solid wastes arising from gold mining industry. hundreds of millions of tons of cyanide tailings that contain highly toxic cyanides and various valuable elements, such as gold, silver, iron, sulfur, copper, lead, and zinc are generated and discharged to tailing dams every year.
feb 18, 2021 however, if the tailings dam is in the acid-alkaline environment for a long time during the use process, it will still lead to continuously elevated tailings reservoir water level and persistently
jul 13, 2021 the operational and environmental cleanup activities at kennecott utah copper llc’s (kennecott) bingham canyon mine, copperton concentrator, smelter, refinery, tailings facility and the various ancillary facilities are regulated under a number of federal and state programs with authority to oversee the work pursued by kennecott and other third parties.
Kennecott utah copper llc-utah department of
jun 18, 2019 one of the major wastes from mining and automobile sectors is tailings and waste tires, respectively. their voluminous nature calls for urgent action for safe disposal and to reduce the growing threat on the environment. under the present study, laboratory model footing and toxicity characteristics leaching procedure (tclp) tests were conducted on tire chip-reinforced copper tailings (trct) to