Study on Mineral Processing Flowsheet of a Certain Low Grade Pb-Zn Sulphide Ores

2011 ◽  
Vol 402 ◽  
pp. 576-579
Author(s):  
Zong Wu Wei ◽  
Chen Hu Zhang
Keyword(s):  
Zinc Concentration ◽  
Lead Concentration ◽  
Mineral Processing ◽  
Low Grade ◽  
Butyl Xanthate ◽  
Sulphide Ores ◽  
Lead And Zinc

In light of the characteristics of Pb-Zn sulphide ores with fine dissemination size, close intergrowth and contain large number of slime,a new flotation flowsheet is containing lead preferential flotation,ammonium dibutyl dithiophosphate as collector,Na2CO3as pH modifiers, and ZnSO4as depressor. Then zinc is recovered by using CuSO4as activator, butyl xanthate as collector, successfully realizing the separation of lead and zinc .The grade of lead concentration is 50.60％,containing 3.93％Zn. The recovery of lead is 87.78％.In addition, the grade of zinc concentration is 47.75％, containing 0.48％Pb and the recovery of zinc is 88.58％.

scholarly journals Critical importance of pH and collector type on the flotation of sphalerite and galena from a low-grade lead–zinc ore

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Abdolrahim Foroutan ◽  
Majid Abbas Zadeh Haji Abadi ◽  
Yaser Kianinia ◽  
Mahdi Ghadiri
Keyword(s):  
Iron Ore ◽  
Low Grade ◽  
Zinc Recovery ◽  
Flotation Process ◽  
Ph Values ◽  
Lead And Zinc ◽  
Optimum Ph ◽  
Iron And Zinc ◽  
Lead Zinc ◽  
Zinc Concentrate

AbstractCollector type and pulp pH play an important role in the lead–zinc ore flotation process. In the current study, the effect of pulp pH and the collector type parameters on the galena and sphalerite flotation from a complex lead–zinc–iron ore was investigated. The ethyl xanthate and Aero 3418 collectors were used for lead flotation and Aero 3477 and amyl xanthate for zinc flotation. It was found that maximum lead grade could be achieved by using Aero 3418 as collector at pH 8. Also, iron and zinc recoveries and grades were increased in the lead concentrate at lower pH which caused zinc recovery reduction in the zinc concentrate and decrease the lead grade concentrate. Furthermore, the results showed that the maximum zinc grade and recovery of 42.9% and 76.7% were achieved at pH 6 in the presence of Aero 3477 as collector. For both collectors at pH 5, Zinc recovery was increased around 2–3%; however, the iron recovery was also increased at this pH which reduced the zinc concentrate quality. Finally, pH 8 and pH 6 were selected as optimum pH values for lead and zinc flotation circuits, respectively.

Mineral Processing Technology Study on a Lean Hematite Ore with Finely-Disseminated Minerals

2013 ◽  
Vol 303-306 ◽  
pp. 2473-2476
Author(s):  
Wei Zhi Wang ◽  
Li Hui Zhou ◽  
Chun Guang Yang
Keyword(s):  
Mineral Processing ◽  
Low Grade ◽  
Iron Recovery ◽  
Technology Study ◽  
Complex Composition ◽  
Flotation Process ◽  
Iron Concentrate ◽  
Second Stage ◽  
Fine Grain ◽  
Hematite Ore

The mineral processing experimental research was carried out on the hematite bearing characteristics of low grade, fine grain,complex composition. The results showed that using the technological flowsheet of “stage grinding- low intensity magnetic separation”, the iron concentrate with recovery of 36.56% and grade of 65.85% Fe can be obtained. And the iron concentrate with recovery of 17.23% and grade of 63.53% Fe can be obtained by “stage grinding-HIMS process-reverse flotation” process. The final iron concentrate with TFe grade of 65.10%,yield of 19.19% and total iron recovery of 53.79% from the raw ores with TFe grade of 23.41％ was obtained, with the first stage grinding size being 55% -0.074mm and the second stage,93% -0.074mm.

Research on Exploration of Mineral Processing for a Iron Ore

2015 ◽  
Vol 1094 ◽  
pp. 397-400
Author(s):  
Xian Xie ◽  
Zi Xuan Yang ◽  
Xiong Tong ◽  
Ji Yong Li
Keyword(s):  
Magnetic Separation ◽  
Calcium Oxide ◽  
Iron Ore ◽  
Mineral Processing ◽  
Low Grade ◽  
Iron Minerals ◽  
Iron Mineral ◽  
Ore Minerals ◽  
Separation Test

Iron ore minerals are mainly silicate-type iron minerals in raw ore, and its distribution rate was 51.93%; followed by magnetic iron, and its distribution rate was 36.81%; content and distribution rate of other minerals was very low; element grade of iron, phosphorus, sulfur, silica were 11.90%, 0.043%, 0.013% and 45.23%, the main gangue were silica and calcium oxide, recyclable iron minerals mainly is magnetic iron mineral. Due to the grade of iron of raw ore and the amounts of optional magnetite was relatively little, in order to investigate the optional of low-grade ore, weak magnetic separation test and weak magnetic separation tailings-strong magnetic separation test were put into effect.

scholarly journals Geostatistical study of spatial correlations of lead and zinc concentration in urban reservoir. Study case Czerniakowskie Lake, Warsaw, Poland

2016 ◽  
Vol 8 (1) ◽  
Author(s):  
Piotr Fabijańczyk ◽  
Jarosław Zawadzki ◽  
Małgorzata Wojtkowska
Keyword(s):  
Bottom Sediments ◽  
Cross Sections ◽  
Zinc Concentration ◽  
Human Impacts ◽  
Large City ◽  
Field Measurements ◽  
Anthropogenic Pressure ◽  
Spatial Distributions ◽  
Water Suspension ◽  
Lead And Zinc

AbstractThe article presents detailed geostatistical analysis of spatial distribution of lead and zinc concentration in water, suspension and bottom sediments of large, urban lake exposed to intensive anthropogenic pressure within a large city. Systematic chemical measurements were performed at eleven cross-sections located along Czerniakowskie Lake, the largest lake in Warsaw, the capital of Poland. During the summer, the lake is used as a public bathing area, therefore, to better evaluate human impacts, field measurements were carried out in high-use seasons. It was found that the spatial distributions of aqueous lead and zinc differ during the summer and autumn. In summer several Pb and Zn hot-spots were observed, while during autumn spatial distributions of Pb and Zn were rather homogenous throughout the entire lake. Large seasonal differences in spatial distributions of Pb and Zn were found in bottom sediments. Autumn concentrations of both heavy metals were ten times higher in comparison with summer values.Clear cross-correlations of Pb and Zn concentrations in water, suspension and bottom sediments suggest that both Pb and Zn came to Czerniakowskie Lake from the same source.

scholarly journals A Novel Technology for Separating Copper, Lead and Zinc in Flotation Concentrate by Oxidizing Roasting and Leaching

Processes ◽  
2019 ◽  
Vol 7 (6) ◽  
pp. 376 ◽  
Author(s):  
Qian Zhang ◽  
Qicheng Feng ◽  
Shuming Wen ◽  
Chuanfa Cui ◽  
Junbo Liu
Keyword(s):  
Sulfuric Acid ◽  
Acid Leaching ◽  
Mining Area ◽  
Low Grade ◽  
Flotation Concentrate ◽  
Copper And Zinc ◽  
Lead And Zinc ◽  
Electron Microscopy Analysis ◽  
Leaching Parameters ◽  
Copper Lead

In this work, oxidizing roasting was combined with leaching to separate copper, lead, and zinc from a concentrate obtained by bulk flotation of a low-grade ore sourced from the Jiama mining area of Tibet. The flotation concentrate contained 7.79% Cu, 22.00% Pb, 4.81% Zn, 8.24% S, and 12.15% CaO; copper sulfide accounted for 76.97% of the copper, lead sulfide for 25.55% of the lead, and zinc sulfide for 67.66% of the zinc. After oxidizing roasting of the flotation concentrate, the S content in the roasting slag decreased to 0.22%, indicating that most sulfide in the concentrate was transformed to oxide, which was beneficial to leaching. The calcine was subjected to sulfuric acid leaching for separation of copper, lead, and zinc; i.e., copper and zinc were leached, and lead was retained in the residue. The optimum parameters of the leaching process were: a leaching temperature of 55 °C; sulfuric acid added at 828 kg/t calcine; a liquid:solid ratio of 3:1; and a leaching time of 1.5 h. Under these conditions, the extents of leaching of copper and zinc were 87.43% and 64.38%, respectively. Copper and zinc in the leaching solution could be further separated by electrowinning. The effects of leaching parameters on the extents of leaching of copper and zinc were further revealed by X-ray diffraction and scanning electron microscopy analysis.

Experimental Study on the Recovery of the Zinc from Iron Tailings in Hebei

2013 ◽  
Vol 641-642 ◽  
pp. 256-261
Author(s):  
Qing Mei Jia ◽  
Feng Jiu Li ◽  
Hui Jing Wang
Keyword(s):  
Experimental Study ◽  
Copper Sulfate ◽  
Mineral Processing ◽  
Reverse Flotation ◽  
Butyl Xanthate ◽  
Zinc Concentrate

This article conducts mineral processing experimental study on a certain iron tailing ore in Hebei. According to the ore characteristics, the final flowsheet of stage grinding - weak magnetic - strong magnetic - anionic reverse flotation is determined to sort the ore. Under the conditions that grinding fineness is -200 mesh accounting for 60.0%, collector is butyl xanthate and activator is copper sulfate, this test can obtain zinc concentrate that grade is 36.25% and recovery is 84.15%

scholarly journals Beneficiation research on a low grade linnaeite ore with hema-tite-pyrite type

2019 ◽  
Vol 136 ◽  
pp. 02008
Author(s):  
Xinfang Zhang ◽  
Qinqin Wang ◽  
Chengdong Wang ◽  
Lang Zhu ◽  
Shujie Shi ◽  
...  
Keyword(s):  
Copper Sulfate ◽  
Recovery Rate ◽  
Closed Circuit ◽  
Low Grade ◽  
Butyl Xanthate ◽  
Ethyl Xanthate ◽  
Type Complex

Mineralogy and separation experiments were carried out for a low-grade linnaeite ore (0.052%), which belonged to limonite-hematite-pyrite type complex mineral. Under the grinding fineness of 80% -0.074 mm, linnaeite concentrate which contained cobalt grade of 0.51%, recovery rate of 80.99%, sulfur grade of 23.79%, recovery of 88.03% was obtained by closed-circuit processes of one roughing, two scaenging and one cleaning, which used sulfate acid (4500 g/t) and copper sulfate (300 g/t) as activator, so-dium silicate (1000 g/t) and CMC (30 g/t) as inhibitor, ethyl xanthate（100 g/t）and butyl xanthate (100 g/t) as collector, 2# oil (40 g/t) as forther in roughing, no agent in cleaing and first scavenging, used ethyl xan-thate（50 g/t）and butyl xanthate (50 g/t) as collector, 2# oil (20 g/t) as forther in second scavenging.

scholarly journals Recovering Cobalt and Sulfur in Low Grade Cobalt-Bearing V–Ti Magnetite Tailings Using Flotation Process

Processes ◽  
2019 ◽  
Vol 7 (8) ◽  
pp. 536 ◽  
Author(s):  
Xiao ◽  
Zhang
Keyword(s):  
Copper Sulfate ◽  
Metal Sulfide ◽  
Raw Material ◽  
Low Grade ◽  
Sulfur Recovery ◽  
Butyl Xanthate ◽  
Flotation Process ◽  
Pine Oil ◽  
Cobalt Recovery ◽  
Flotation Concentration

There is 0.032% cobalt and 0.56% sulfur in the cobalt-bearing V–Ti tailings in the Panxi Region, with the metal sulfide minerals mainly including FeS2, Fe1−xS, Co3S4, and (Fe,Co)S2, and the gangue minerals mainly including aluminosilicate minerals. The flotation process was used to recover cobalt and sulfur in the cobalt-bearing V–Ti tailings. The results showed that an optimized cobalt–sulfur concentrate with a cobalt grade of 2.08%, sulfur content of 36.12%, sulfur recovery of 85.79%, and cobalt recovery and 84.77% were obtained by flotation process of one roughing, three sweeping, and three cleaning under roughing conditions, which employed pulp pH of 8, grinding fineness of < 0.074 mm occupying 80%, flotation concentration of 30%, and dosages of butyl xanthate, copper sulfate, and pine oil of 100 g/t, 30 g/t, and 20 g/t, respectively. Optimized one sweeping, two sweeping, and three sweeping conditions used a pulp pH of 9, and dosages of butyl xanthate, copper sulfate, and pine oil of 50 g/t, 15 g/t, 10 g/t; 25 g/t, 7.5 g/t, 5 g/t; 20 g/t, 5 g/t, 5 g/t, respectively. Optimized one cleaning, two cleaning, and three cleaning condition dosages of sodium silicate of 200 g/t, 100 g/t, 50 g/t, respectively. Study of analysis and characterization of cobalt–sulfur concentrate by X-ray diffraction (XRD), automatic mineral analyzer (MLA), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) showed that the main minerals in cobalt–sulfur concentrate are FeS2, Co3S4 and (Fe,Co)S2, of which FeS2 and (Fe,Co)S2 accounted for 65.64% and Co3S4 for 22.64%. Gangue minerals accounted for 11.72%. The element Co in (Fe,Co)S2 is closely related to pyrite in the form of isomorphism, and the flotability difference between cobalt and pyrite is very small, which makes it difficult to separate cobalt and sulfur. Cobalt–sulfur concentrate can be used as raw material for further separation of cobalt and sulfur in smelting by pyrometallurgical or hydrometallurgical methods.

Study on Recovery of Lead-Zinc Tailing Ore by Electrochemical Flotation

2014 ◽  
Vol 675-677 ◽  
pp. 1451-1454 ◽  
Author(s):  
Gui Ying Zhou ◽  
Wen Juan Li ◽  
Yong Chen ◽  
Yong Sheng Song
Keyword(s):  
Potential Range ◽  
Low Grade ◽  
Separation Potential ◽  
Potential Control ◽  
Iron Sulfur ◽  
Lead And Zinc ◽  
High Oxidation ◽  
Lead Zinc ◽  
Pulp Potential ◽  
Zinc Concentrate

The tailing in a large lead-zinc-iron-sulfur multi-metallic mine has rich reservation in variety of metallic minerals. It has been difficult to recover because of all kinds of reasons. The challenges faced by lead-zinc ore beneficiation are, low grade and recovery of lead and zinc concentrate for fine disseminated grain size, high oxidation rate and close intergrowth. This paper presents a Pulp Potential Control Flotation by stages technique to improve the flotation performance of the lead-zinc ores. In the electrochemical potential controlling flotation processing, using DDTC as collector, the separation potential range of galena and sphalerite with pyrrhotite can be achieved. Flotation circuit of lead-zinc-silver tailing ore was achieved.

Variance Calculations for Quantitative Real-Time PCR Experiments with Multiple Levels of Replication

2013 ◽  
Vol 825 ◽  
pp. 172-176
Author(s):  
Susana Soto-Rojo ◽  
Gary Glonek ◽  
Cecilia Demergasso ◽  
Pedro A. Galleguillos ◽  
Patty Solomon ◽  
...  
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Industrial Process ◽  
Error Variance ◽  
Low Grade ◽  
Sulphide Ores ◽  
Polymerase Chain ◽  
Frequent Sampling ◽  
The Relationship ◽  
Proportional Reduction

Heap bioleaching is an established technology for recovering copper from low-grade sulphide ores. Recently, genetics-based approaches have been employed to characterize mineral-processing bacteria. In these approaches, data analysis is a key issue. Consequently, it is of fundamental importance to provide adequate mathematical models and statistical tools to draw reliable conclusions. The present work relates to current studies of the consortium of organisms inhabiting the bioleaching heap of the Escondida mine in Northern Chile. These studies aim to describe and understand the relationship between the dynamics of the community and the performance of the industrial process. Here, we consider a series of quantitative real-time polymerase chain reaction (PCR) experiments performed to quantify six different microorganisms at various stages of the bioleaching cycle. Establishing the reliability of the data obtained by real-time PCR requires the estimation of the error variance at several different levels. The results obtained show that the sampling component of the error variance is the dominant source of variability for most microorganisms. An estimate for the proportional reduction in residual standard deviation from the use of extraction and real-time PCR triplicates was found to range from 3% to 27% for the different organisms. This result suggests that triplicate assays would produce only a modest reduction in error variance compared to more frequent sampling from the heap.

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