Request PDF | On Nov 1, 2023, Zhan-Ke Li and others published A giant porphyry-skarn-epithermal Mo-W-Cu-Zn-Pb-Ag metallogenic system in the Nannihu ore field, southern North China Craton ...
The study focuses on the Cu-Pb-Zn tailings pond in Huili County (27°05′50″ N, 102°13′55″ E), located in the Anning River Basin of the western part of Sichuan Province, China, serving as the tailings storage facility for the Tianbaoshan Cu-Pb-Zn mine (Zhou, Gao, Chen, and Liu, 2013; Zhu, Wen, Zhang, and Fan, 2016).The deposit is rich in Cu, Pb …
The Morococha district in central Peru is characterised by economically important Cordilleran polymetallic (Zn-Pb-Ag-Cu) vein and replacement bodies and the large Toromocho porphyry Cu-Mo deposit …
The NCC is composed of two blocks, the Western and Eastern Blocks, which are separated by the Trans-North China Orogen (TNCO; Fig. 1).This orogen was formed when the two blocks collided around 1.85 Ga, which led to the final amalgamation and stabilization of the NCC (Zhao et al., 2001).Although the NCC remained a coherent and …
Dynamic Four-step Sequential Extraction Procedure Using a Four-channel Circulating Flow System for Extracting Cd, Cu, Pb, and Zn from Solid Environmental Samples Anal Sci. 2019 Oct 10;35(10):1089-1096. doi: 10.2116/analsci.19P077. Epub 2019 Jun 14. Authors ...
The sulfuric acid system showed leaching efficiencies comparable to those of hydrochloric acid for Cu, Zn and Cd, but precipitated Pb as sulfate. This means that the leached ash will contain lead that can be released later, which counteracts our aim to produce an ash residue with lower content of potentially toxic metals.
A procedure has been developed for the determination of critical elements such as Cu, Zn, As, Cd, In, Sn, Pb, and Bi present at trace/ultra-trace levels in different types of Ni-based superalloys.
This paper discusses new structural, kinematic and geochronological data from polymetallic (Pb-Zn-Cu-Ag ± Au) vein-type deposits hosted in the metamorphic basement of the southern Sierras de Córdoba.A Carboniferous age was established for the hydrothermal event between ∼329 and 315 Ma (Late Mississippian-Early …
For this work the evaluations of the binary Cu-Zn, Cu-Pb, Sn-Zn and Pb-Zn subsystems have been taken from the SGTE database [86Ans], for the Cu-Sn system the data [96Shi] were used.
We validated the determination of the content of Cd, Cu, Pb and Zn using two digestion protocols: a microwave-assisted total digestion and an aqua regia extraction procedure based on the International Organization for Standardisation (ISO) 11466 method. Our goal in validating these two protocols, along with a nitric acid digestion, is to …
The flocculation trend of Zn (85.5%)>Mn (55.2%)>Cu (39.6%)>Pb (33.7%)>Ni (11.3%) indicates that Cu, Zn, Pb and Mn have non-conservative behavior and Ni has relatively conservative behavior ...
Fractionation of Zn, Cu, and Pb in SS temporary ore storage soils and SM mill-mine soils obtained by Tessier's scheme (concentration in mg.kg -1 ± standard deviation, and in brackets, percentage ...
Moreover, the soil naturally containing Cu-vermiculite, Cu-hematite, but also Cu-kaolinite (Cutotal = 122 mg·kg⁻¹) was amended over 11 years with Cu-rich pig slurry in which Cu was 100 % Cu(I ...
This study considered NB flotation for processing complex Pb- Cu-Zn sulfide ore in two different size ranges and various conditions to assess the process readiness. …
Good correlation coefficients between Component 2 and Pb concentration (0.79), and between Component 3 and Pb (0.61) and Zn (0.72) were obtained, which may indicate that a proportion of the Pb concentration originated from the same source as the Zn, but that an additional source of Pb was also present.
This investigation examines the relationship between the summed concentrations of Al, Co, Cu, Fe, Mn, Ni, Pb and Zn released by an optimized 3-step standardized sequential extraction procedure and ...
The ability of activated carbon produced from orange peel (AOP) to adsorb Pb(II), Fe(II), Cu(II), and Zn(II) ions from electroplating industrial wastewater has been investigated through batch ...
The sediment-hosted polymetallic (Pb, Zn, Ag, Au-Cu) mineralization of the Vale do Ribeira Mineral District has been known since the beginning of the 20th century, but exploration was interrupted ...
The paper contains all the results and gives the methods used to certify the extractable contents (mass fractions expressed as mg kg-1 on a dry matter basis) of Cd, Cr, Cu, Ni, Pb and Zn in all steps.
Fig. 1 shows the extracted percentages of Cd, Cr, Cu, Ni, Pb and Zn in all steps of the sequential extraction procedure of the soils S-SP, S-VM, S-MS. The figure presents the distribution of the elements among fractions: (1) exchangeable and associated with carbonates, (2) associated with easily and moderately reducible iron and …
An investigation on the arable layer of agricultural land in Fuyang County, China was conducted for the total content of Cu, Zn, Pb, and Cd and analyzed in order to identify the main origin of ...
The results also show that Cu, Zn, Cd and Pb can be removed from the fly ash with high efficiency using hydrochloric acid leach- ing, which is beneficial since these metals are potentially toxic.
The formation of Pb-Zn-Ag (Au-Cu) deposits in the study area and elsewhere in the Serbomacedonian-Rhodope district is genetically related to Tertiary magmatic activity (e.g. Heinrich and Neu ...
This study investigates the diagenetic evolution and style of sulfide mineralization in three drill cores that intersect Cu and Zn-Pb sulfide mineralized rocks …
The mobility, availability and persistence of heavy metals (Cd, Cr, Cu, Ni, Pb and Zn) in contaminated lake sediment samples were evaluated by means of sequential extraction scheme, proposed by the Community Bureau of Reference protocol (BCR). The metal content in the extracts was measured by atomic absorption spectrometry.The …
As a result of little attention to the Pb-Zn mineralization in the Cu-Co-Pb-Zn system, it is unclear about the discrepancy among these deposits. The Jingchong Cu-Co-Pb-Zn deposit with reserves of 0.24 Mt Cu, 3718 t Co, 12250 t Pb and 72831 t Zn, is characterized by lower Cu-Co and upper Pb-Zn orebodies (Wang et al., 2017, Wang et …
The plant had a grinding circuit consisting of a primary ball mill (PBM) in an open circuit and a secondary ball mill (SBM) in a closed circuit with hydrocyclones with designing and …
Five approaches were employed to evaluate degree of sediment pollution along Egyptian Red Sea coasts based on one step digestion of eight metals (Fe-Mn-Zn-Pb-Cd-Cu-Cr-Ni): 1) Comparison with the ...
Grinding coarse ore in a ball-mill is done by steel balls of three sizes (5, 4, and 3 inches); fine ore is ground in a tube-mill by 2- and 1½-inch balls or by flint pebbles …
The presented work offers an innovative process scheme for valorizing Pb-Zn slag, which involves crushing, grinding, and separation techniques to concentrate valuable components (non-ferrous metals). This methodology could have a significant impact on the global beneficiation of metallurgical slags since it is significantly more simple, …
Different timings have been proposed for the high-grade Cu and Zn-Pb mineralization in the Kupferschiefer, from early diagenetic (e.g., Wedepohl and …
The main impurities of impure Zn are Pb and Cd which can be substantially removed from Zn by reflux distillation column. The first fraction of Zn distilled will contain …
Although the Cu-Pb-Zn system displays a wide miscibility gap in Cu-Pb-Zn, Cu-Sn-Zn SYSTEMS 423 [945ur]: Aa(Zn)=0.BB 00.81 ^0.71 X0.&3 mole -Fraction Pb Figure 4. Calculated and experimental iso-activity lines of zinc in the Cu-Pb-Zn system at 1075 K. the liquid phase, the activity of Zn shows very large negative deviations from …
Spent mushroom compost biochar (SMCB) was prepared by carbonization and tested for the removal of heavy metals (Zn(II), Cu(II), and Pb(II)) by adsorption. The sorption of heavy metals was evaluated by studying several factors, such as the initial solution pH, contact time, temperature, and individual and competitive adsorption. …
The Morococha district in central Peru is characterised by economically important Cordilleran polymetallic (Zn-Pb-Ag-Cu) vein and replacement bodies and the large Toromocho porphyry Cu-Mo deposit ...
