Lead And Zinc Mine Tailings Treatment

The results reveal that the heavy metals lead and zinc in tailings are stabilized more effectively by using chelating agents TMT than by using inorganic chemical agents Na 2 S and NaH 2 PO 4.

The mining and processing of lead-zinc ores produce many lead-zinc ore tailings, which can cause harm by releasing toxic metal ions to the environment.

To comprehensively reuse lead-zinc tailings, leaching residue (LR) of solid by-products was produced after the recovery of valuable metals. This study provided a "waste-ecology" strategy by a simple, inexpensive method of roasting prepared highly active silicon modified tailing (HAST) to eliminate the environment risk of LR, and investigates performance …

Furthermore, there is a scarcity of studies focusing on the efficient reuse of mine tailings through tailing treatment, despite them being considered one of the most hazardous forms of solid waste. ... Mechanical activation of lead–zinc mine tailings as a substitution for cement in concrete construction. Constr. Build. Mater., 364 (2023), 10. ...

Information on the 27 abandoned zinc–lead mine sites and pollution data of the heavy metals in different environmental matrices including mine tailings, soils, and groundwater surrounding the mine tailing storage sites were collected from the China Knowledge Full-text Literature Database and survey reports provided by the environmental ...

With the development of industry, the human demand for lead and zinc is increasing gradually, and the heavy metal pollution caused by the mining process of lead–zinc tailings is becoming more ...

Ye et al. extracted more than 99% of the zinc from lead-zinc mine tailings by using Na 2 S [25]. Zeng et al. used ball milling activated CaCO 3 to authenticate a lead recovery rate of 99% from ...

How are lead-zinc tailings treated? Re-selection and recovery of tailings, dry tailings discharge, waste backfill, and production of building materials. Re concentration and recovery of lead-zinc mine tailings.

The results reveal that the heavy metals lead and zinc in tailings are stabilized …

This study applied steel slag (SS), blast furnace slag (BFS), flue gas desulfurised …

discharged into the natural environment without any treatment. The metal concentration of the five- ... lead-zinc mine tailings using bioleaching and followed by sulfide precipitation. Chemosphere ...

Ye et al. [22] extracted zinc and lead from lead-zinc mine tailings by the combined sequential bioleaching and brine leaching. About 98% of Zn was extracted by bioleaching, and 99% of Pb was ...

This study systemically assessed contamination by eight heavy metals (Cu, Zn, Cd, Pb, Cr, Hg, Ni, and As) in mine tailings, soil, and groundwater from 27 contaminated sites across China. Regarding mine tailings, 1% of the mine tailing samples were hazardous waste and 20% were class II non-hazardous waste.

The geochemical and mineralogical controls on the release characteristics of potentially toxic elements from lead/zinc (Pb/Zn) mine tailings Environ Pollut, 315 ( 2022 ), Article 120328, 10.1016/j.envpol.2022.120328

These solid-state mine tailings, such as lead and zinc mine tailing (LZMT), are frequently rich in toxic heavy metals, such as Pb, Zn, Cu, Cd, Mn, Ni, As, and so on [2], [3], [4]. Leaching of the toxic heavy metals inevitably will pose risks to the environment and public health worldwide [5], [6], [7]. ... Treatment of nanowaste via fast ...

In this paper, the tailings in the Shenxiandong lead-zinc tailings pond in Yunnan Province, Southwest China, were analyzed. The adsorption effects of different natural stabilizing agents on lead (Pb) and zinc (Zn) in tailings were investigated. Orthogonal and modification experiments were used to identify the most effective stabilizing agent.

We reported that, the stabilization of toxic heavy metals (Zn, Pb, Cd and Cu) in …

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 combining LZTs with ground granulated blast furnace slag (GGBS), steel slag (SS), and desulfurized gypsum (DG). The compressive strength of LZTCC was evaluated …

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 ...

This paper reviews the progress of utilizing lead–zinc tailings as building materials and mainly summarizes the status of lead–zinc tailings in cement, geopolymer, concrete, building brick ...

When the content of lead–zinc tailings is 40% and the water–binder ratio is 0.47, the compressive strength is the lowest. When the content of lead–zinc tailings is 25–35%, it has a great influence on the compressive strength, which is the main position and has a negative correlation, while the influence of water–binder ratio is secondary.

proportion of fly ash:lead and zinc tailings:cement = 30:40:30 and the water–binder ratio was 0.4, the predicted compressive strength of the prepared cementitious material achieved 22.281 MPa ...

The lead–zinc areas of China have faced serious foulteousqulated heavy metal pollution.In this study, data on As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn concentrations in China's lead–zinc mine tailings were collected and screened from published literature (2015–2020).

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 ...

Brassica juncea accumulates more Pb and Zn in roots than in shoots [100] growth in soil plus mine tailings. Concentration of Na and Mg measured in mine tailings was 5207 and 102,917 μg g −1 ...

Energy and Environmental Profile of the U.S. Mining Industry 6.1.2.1 Lead and Zinc Ore Milling Treatment of lead and zinc ores begins with milling. Milling is a multi-stage crushing and grinding operation. It involves coarse crushing followed by wet grinding. Crushing is usually a dry operation that utilizes water sprays to control dust.

Tailings from a lead/zinc (Pb/Zn) mine were characterised and their revegetation potential investigated under glasshouse conditions using five grass species with three rates of inorganic fertiliser. The tailings were alkaline with low nutrient ... The control treatment of Eragrostis superba only comprised a single analysis, thus the SD from the ...

Ali HEB, Neculita CM, Molson JW, Maqsoud A, Zagury GJ (2019) Performance of passive systems for mine drainage treatment at low temperature and high salinity: a review. ... Zheng L, Han D et al (2017) Removal of metals from lead-zinc mine tailings using bioleaching and followed by sulfide precipitation. Chemosphere 185:1189–1196. Article ...

China holds large-scale lead–zinc mineral resources; however, mining activities often cause severe contamination by heavy metals. This study systemically assessed contamination by eight heavy ...

However, two stumbling blocks complicate the ability of roasting lead–zinc tailings to satisfy the requirements of the SO 2 concentration. One drawback is that the sulfur content of lead–zinc tailings is 10–26%, significantly less than the sulfur content (34–48%) of pyrite that is the common raw material used in sulfuric acid production ...