Rapid economic development and increased demand for mineral products in China have led to extensive extraction of various ores resulting in significant environmental challenges associated with the generation of industrial solid waste particularly iron tailings Despite being a major mining nation China faces issues of wasteful practices with substantial
This paper highlights environmentally friendly utilisation of solid wastes like lead zinc mill tailings and lead zinc smelter fuming furnace slag FFS as paste backfilling for an underground
Request PDF Utilization of modified copper slag activated by Na 2 SO 4 and CaO for unclassified lead/zinc mine tailings based cemented paste backfill Serious heavy metals pollution was
The research reported here was designed to investigate the effects of SMC incorporation on selected physical physico chemical and chemical properties of lead zinc tailings and to determine if application of SMC is useful for promoting vegetation growth on lead/zinc mine tailings 2 Experimental set up
Longsheng YI Hongcheng MI Qian WU Jin XIA Binghang ZHANG Present Situation of Comprehensive Utilization of Tailings Resources in China[J] Conservation and Utilization of Mineral Resources 2020 40 3 79 84 doi /
The main purpose of the present study is to improve the feasibility of utilizing lead/zinc mine tailings as CPB raw materials through the binders of OPC in conjunction with CSC10 particularly investigating the mechanical performance and reaction mechanism of CPB systems activated by two activators Na 2 SO 4 and CaO The mechanical behavior was
DOI / Corpus ID 250062966; Utilization of lead zinc mine tailings as cement substitutes in concrete construction Effect of sulfide content article{Saedi2022UtilizationOL title={Utilization of lead zinc mine tailings as cement substitutes in concrete construction Effect of sulfide content} author={Alieh Saedi and Ahmad Jamshidi
Leaching of heavy metals lead zinc copper nickel cobalt chromium cadmium arsenic in all the concrete samples was lower than the EPA standard allowable limit Comparing the results of SEM and EDX images it was found that after 90 days the control sample had more ettringite than the sample made with 70% mine tailings replacing cement
At present the treatment of tailings is mostly carried out in the form of stacking in tailings ponds resulting in a huge waste of mineral resources and a major threat to the environment and ecology Using tailings instead of a part of the cement to make cementitious materials is an effective way to reduce the accumulation of tailings In this paper lead zinc
The comprehensive utilization rate of tailings between 2014 and 2019 ranged from % to % Fig 1 shows the tailings quantity data in recent years [1] The utilization of tailings is severely limited because of the high energy consumption and pollution associated with traditional cement tailing backfill The lead zinc tailings
The tailings dam of the Kooshk lead zinc mine was found to contain approximately % zinc and more than 90% of sphalerite was leached within 14 days using mixed bacte
In an attempt to promote sustainable vegetation cover on metalliferous tailings a randomized factorial greenhouse trial of six month duration was established to determine the effect of spent mushroom compost SMC amendment on the physical and chemical properties of the predominantly lead/zinc tailings The tailings originated from the surface 20 30 cm of the
The study on the tailings comprehensive utilization is mainly concentrated in minerals in the past which means we need to use all kinds of research methods and results that we use in the mineralogy nowadays Tl is recovered from smelting process of the copper lead and zinc ore its price being $1 200 kg −1 References Xiao M 2010
DOI / Corpus ID 250062966; Utilization of lead zinc mine tailings as cement substitutes in concrete construction Effect of sulfide content article{Saedi2022UtilizationOL title={Utilization of lead zinc mine tailings as cement substitutes in concrete construction Effect of sulfide content} author={Alieh Saedi and Ahmad Jamshidi
Using lead slag and lead zinc tailings to prepare high value glass ceramic can realize the comprehensive utilization of solid waste and reduce the environmental pollution caused by lead slag landfill Firstly lead zinc tailings and borax are used to melt and temper lead slag to improve its sintering performance At 1450 °C the lead slag melted and tempered by
Lead zinc tailings are the typical solid wastes in mines with high yield and low utilization rates in some countries at present They are mainly stockpiled in tailings reservoirs occupying massive land resources and threatening the health of the environment
The majority of the literature speaks about the use of copper gold gold silver gold copper zinc and copper tailings in mine paste backfill However only a few previous studies have reported the utilization of tantalum niobium ore
Applying LZTPs to replace cement partially as paste backfill and building material admixtures in the concrete industry may effectively achieve the recycling utilization of lead zinc mine tailings [8] [18] [19] Wang et al [20] [21] produced a new type of sustainable ultra high performance concrete by replacing 30% of cement with waste LZTPs to reduce early
These studies provided a feasible way for the utilization of lead zinc tailings However due to the lack of product performance and price advantages the utilization of lead zinc tailings was limited The current utilization ratio of lead zinc tailings was Only 8% 10% in China Therefore it is still necessary to develop other technologies
Efficient secondary utilization of lead zinc tailings is crucial In this study the activity of lead zinc tailings was stimulated by thermal activation The optimal thermal activation
By comparing the chemical composition of lead zinc tailings with clay it can be found that the composition of both is very similar and the content of SiO 2 Fe 2 O 3 and Al 2 O 3 in some lead
Efficient secondary utilization of lead zinc tailings is crucial In this study the activity of lead zinc tailings was stimulated by thermal activation The optimal thermal activation
Semantic Scholar extracted view of "Preparation of high purity vaterite CaCO3 from lead zinc tailings" by Lei Zhao et al Skip to search form Skip to main content Skip to account menu Semantic Scholar s Logo Search 222 241 713 papers from all fields of science Dual value utilization of calcium silica slag Sequestration of CO2 to recover
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