Recovery of metals from the roasted lead-zinc tailings by …
The raw material (RM) used in this study was the roasted lead-zinc tailings, which was the cinder obtained from the oxidation roasting of the lead-zinc tailings in the Fankou lead and zinc mine (Lei et al., 2015). The main mineral in the RM is hematite, which was generated from the oxidation of pyrite in the lead-zinc tailings.
اقرأ أكثر
Research Status and Prospects for the Utilization of …
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 …
اقرأ أكثر
Research Status and Prospects for the Utilization …
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...
اقرأ أكثر
Utilization of modified copper slag activated by Na2SO4 …
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 …
اقرأ أكثر
Utilization of modified copper slag activated by Na2SO4 …
Serious heavy metals pollution was characterized in the lead/zinc mine tailings dam and surrounding soils, as well as copper slag disposal sites. This study investigates the efficacy of modified granulated copper slag (MGCS) as a partial replacement of ordinary Portland cement (OPC) for lead/zinc mi …
اقرأ أكثر
Feasibility of Using Lead–Zinc Tailings to Produce Environmentally
AbstractThere are large volumes of lead-zinc tailings (LZT) produced in China and elsewhere in the world. LZT disposal to the landfill is problematic and causes many environmental issues. ... C., B. Yan, T. Chen, S. X. Quan, and X. M. Xiao. 2015. "Comprehensive utilization of lead–zinc tailings, part 1: Pollution characteristics and ...
اقرأ أكثر
Experimental study on solidification and remediation of lead–zinc
Compared with Fig. 8 (c) and (d), the Ca content of both the lead–zinc tailing samples being solidified and repaired by Bacillus pasteurii formed in the condition of two kinds of additive amounts of lead–zinc tailings were 76.98 % and 25.85 % respectively, higher than the Ca content in the lead–zinc tailings, especially when adding 2 cm ...
اقرأ أكثر
Preparation and characterization of glass ceramics …
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 adding 40% lead-zinc tailings and 4% borax has good fluidity in the molten state. ... Therefore, realizing a harmless and resourceful utilization of lead slag is of urgent concern ...
اقرأ أكثر
(PDF) Utilization of copper mine tailings as a …
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 ...
اقرأ أكثر
A Comprehensive Review On Lead-Zinc Tailings As An …
This review gives an overview about Lead-Zinc tailings and comprehensive understanding of utilization of tailings as an alternate material in the preparation of concrete.
اقرأ أكثر
Characteristics and Hazards of Lead–Zinc Tailings
Lead–zinc tailings are the typical solid wastes in mines with high yield and low utilization rates in some countries. They are mainly stockpiled in tailings reservoirs, occupying massive land resources and threatening the …
اقرأ أكثر
Preparation and characterization of glass ceramics …
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 …
اقرأ أكثر
Utilization of spent mushroom compost for the revegetation of lead-zinc …
Request PDF | Utilization of spent mushroom compost for the revegetation of lead-zinc tailings: Effects on physico-chemical properties of tailings and growth of Lolium perenne | In an attempt to ...
اقرأ أكثر
A review on complex utilization of mine tailings: Recovery …
As a part of this comprehensive review, beyond the general MT characterization, Table 1, Table 2, Table 3 will provide a comparative analysis of the top five MTs in terms of contribution to global tailings: copper, gold, iron, phosphate, and lead-zinc, with 46%, 21%, 9%, 4%, and 3%, respectively [33].
اقرأ أكثر
Underestimated environmental benefits of tailings resource utilization …
The resource utilization of tailings will relieve the pressure on resources and contribute to the realization of China's 'Carbon Peaking and Neutrality Goals,' with a significant benefit of emission reduction. ... flow analysis in recent years has focused on the study of primary resources, such as indium, neodymium, nickel, cobalt, lead ...
اقرأ أكثر
Utilization of modified copper slag activated by Na 2 SO 4 …
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 ...
اقرأ أكثر
Utilization of lead–zinc mine tailings as cement substitutes in
Lead-zinc mine tailings (by weight) were used as a substitute for 10, 20, 30, and 40% of cement, and their effect on fresh and hardened UHPC behaviors was studied. The …
اقرأ أكثر
Utilization of tailings in cement and concrete: A …
The tailings are also very diverse in mineral phases even in the lead-zinc tailings. Figure 2 presents the XRD pattern of lead-zinc tailings coming from different resources.
اقرأ أكثر
Utilization Situation and Development Trend of …
Resource Utilization of Lead-zinc Tailings. Multipurpose Utilization of Mineral Resources, 2017, (1): 12-12. doi: 10.3969/j.issn.1000-6532.2017.01.003. WEI Li-ning, JIANG Wu, ZHUO Ou, LI Ning, PENG Nan …
اقرأ أكثر
Comprehensive utilization of lead–zinc tailings, part 1: …
To comprehensively reuse lead-zinc tailings and avoid environmental pollution, the enrichment of valuable metals and the recovery of iron from the roasted lead-zinc tailings (RM), the cinder after ...
اقرأ أكثر
Mineralization performance and crystal characteristics of …
The comprehensive utilization rate of tailings between 2014 and 2019 ranged from 26.51% to 30.99%, 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 ...
اقرأ أكثر
Utilization of spent mushroom compost for the revegetation of lead-zinc …
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 tail …
اقرأ أكثر
Experimental Study on the Preparation of Cementitious …
The pozzolanic activity of lead–zinc tailings (LZTs) was enhanced through mechanical grinding, enabling the preparation of a lead–zinc tailing based composite cementitious material (LZTCC) by ...
اقرأ أكثر
How to Realize the Lead-Zinc Tailings Reprocessing and Dry …
With the continuous exploitation and utilization of lead-zinc resources, the emission of lead-zinc tailings goes in increasing year by year, which inevitably brings a series of environmental ...
اقرأ أكثر
Effect of High Temperatures on Mechanical and Shielding
If a reasonable large-scale utilization of lead–zinc tailings sand can be achieved, it can bring considerable economic and environmental benefits. (2) By incorporating a dosage of 30% of the lead–zinc tailings sand, the workability and splitting tensile strength of the radiation shielding concrete can be improved. Moreover, this dosage can ...
اقرأ أكثر
Utilization of mill tailings, fly ash and slag as mine paste …
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 …
اقرأ أكثر
Roasted modified lead-zinc tailings using alkali as activator …
Tailings comprise the solid waste after the separation and enrichment of ore resources (Chen et al., 2014).Over the past few years, tailings have been commonly used for the backfilling of mining areas, re-soiling and construction materials (as concrete, bricks and cement etc.) (Chen et al., 2018).However, the comprehensive utilization of tailings by the traditional …
اقرأ أكثر
Analysis of Influencing Factors of Cementitious Material …
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 …
اقرأ أكثر
Mechanical activation of lead–zinc mine tailings as a …
DOI: 10.1016/j.conbuildmat.2022.129973 Corpus ID: 254520714; Mechanical activation of lead–zinc mine tailings as a substitution for cement in concrete construction @article{Saedi2023MechanicalAO, title={Mechanical activation of lead–zinc mine tailings as a substitution for cement in concrete construction}, author={Alieh Saedi and Ahmad Jamshidi …
اقرأ أكثر
Resource Utilization of Lead-zinc Tailings
Yi Longsheng, He Lei, Wang Zexiang. Resource Utilization of Lead-zinc Tailings[J]. Multipurpose Utilization of Mineral Resources, 2017, (1): 12-15. doi: 10.3969/j.issn.1000 …
اقرأ أكثر