Types Of Sulfides Research Articles

Design of a yolk-shell ternary metal sulfide with a tunable structure for high-performance electromagnetic wave absorption.

Herein, we report a strategy for preparing a novel ternary metal sulfide (TMS) with a yolk-shell structure based on a "penetration-solidification-annealing" method. A series of FeCoNiSxGy with tunable structure, different morphology and composition was synthesized by adjusting the degree of sulfuration. Due to the synergistical manipulation of rich interface, defects, vacancies and electrical conductivity, as well as the unique yolk-shell structure, the appropriate sulfuration strategy achieved excellent impedance-matching and strong dielectric loss. The as-synthesized FeCoNiSxGy sulfides were blended with paraffin wax (under a filler loading of 30 wt%), which had the minimum reflection loss of -49.44 dB (2.20 mm) and the effective absorption bandwidth of 4.76 GHz (1.6 mm). In conclusion, this work could aid the design and regulation of a new type of ternary metal sulfides with high-performance electromagnetic wave absorption.

Effect of Sulfur Content on Precipitation Behavior of Dendrite Sulfide Inclusion in Continuous Casted 20CrMnTi Gear Steel

The effect of sulfur content on sulfide inclusion and dendrite MnS in continuous casted 20CrMnTi gear steel is investigated. There are two main types of sulfides in 20CrMnTi steel: pure MnS and TiN–MnS composite inclusions. The number of TiN–MnS is higher than MnS, especially in the edge of the billet. TiN–MnS is smaller both in area and size than pure MnS. The statistical results of dendrite MnS show that the increase of S content decreases the average size of sulfides, whereas raises the number and the maximum size of sulfides. With the S content increasing, the proportion of large‐sized dendrite MnS in steel decreases, but the amount of large‐sized dendrite MnS increases, which results in the increase of number of large‐sized dendrite MnS. The average area of dendrite MnS inclusions first increased and then decreased from the edge to the center of billet, and the maximum area appeared at about 1/2 radius of the billet. Comparison with the microstructure of the two billets, the proportion of ferrite increased with the increase of S content.

Geochronology and metallogenic mechanism of the Ashele copper–zinc deposit in the Altay, Xinjiang, Northwest China: Insights from pyrite Re–Os dating, trace elements and sulfur isotopes

The Ashele Cu–Zn deposit is the largest volcanogenic massive sulfide (VMS) type deposit in the Xinjiang Central Asian Orogenic Belt (XCAOB). This deposit is located in the Devonian volcanic–sedimentary basin on the South Altay, Xinjiang. The Nos. I and II mineralized belts are the largest in the ore district consist of two parts: concordant massive sulfide lenses and discordant vein-type sulfide mineralization. This study mainly focuses on the mineralization during the submarine exhalative–sedimentary period. In situ trace element analysis showed that sphalerite is an important host for In and Cd, and tennantite is the main host for Au, Ag, As, Cd, Sb, Zn, Bi, and Se in base metal sulfides system. The concentration fluctuation of Bi and Se may be caused by galena. Pyrite and chalcopyrite are not enriched with specific elements, except for occasional inclusions of other minerals. Seven stratified pyrite samples display a Re–Os weighted average age of 389.1 ± 9.9 Ma (MSWD = 0.15). This data can represent the formation time of the No. I mineralized belt. The geothermometer of sulfur isotope shows sulfide mainly formed at 113 to 362 °C (avg. 214 °C), and sphalerite formed at 133 to 194 °C (avg. 175 °C) based on GGIMFis geothermometer. The δ34S values are between −1.84 to 5.51 ‰, suggestting sulfur mainly comes from magmatic sulfur, followed by seawater sulfate.

Facile synthesis of hierarchical Fe–S co-doped carbon-based composites with superior microwave absorption

Difficulty of multi-component coupling and hierarchical pore structure preparation make it challenging to manufacture highly efficient microwave absorption materials (MAMs). Herein, hierarchical porous carbon composites anchored with various types of iron sulfides are successfully fabricated using a simply feasible heating-induced self-assembly approach. Controllable electromagnetic parameters and impedance matching features of FexSy/AC (amorphous carbon) composites are obtained by varying carbonization temperature. Besides, AC and FexSy provide dielectric and magnetic losses, while defect-rich AC can effectively disperse FexSy nanoparticles, exhibiting high sintering resistance and high-density interfaces, which contributes to polarization losses. Moreover, the unique hierarchical porous structure not only offers better impedance matching, but also enhances microwave loss. The thorough investigation indicates that FexSy/AC nanocomposites exhibit outstanding microwave absorption performance by the joint effect of unique hierarchical porous structure and coupling loss of multi-components. The optimal sample (FSC-700) shows a strongest reflection loss value of up to −78.96 dB with a matching thickness of 2.85 mm, an effective absorption bandwidth (EAB, RL<−10 dB) of 6.98 GHz (11.02–18.0 GHz, spanning Ku-band), and a radar cross section (RCS) reduction value of 21.75 dBm2. In addition, the EAB can reach 13.8 GHz with the simulated thickness varies from 1.0 to 5.5 mm, covering 86 % of the measured frequency range. The in-depth research of the multi-component system with hierarchical porous structure offers an innovative and practical method for high-performance MAMs.

Compressibility, diffusivity, and elasticity in relationship with ionic conduction: An atomic scale description of densified Li2S${\rm Li}_2{\rm S}$–SiS2${\rm SiS}_2$ glasses

AbstractWe examine the dynamic and ionic properties of a typical sulfide glass electrolyte 50–50 using molecular dynamics simulations and a previously parameterized force‐field able to describe both the crystalline phase and the corresponding glass. We especially focus on the effect of moderate pressures on the glassy and supercooled state since the design of all‐solid state batteries use molding conditions at moderate pressures in order to achieve contact between the electrolyte and the electrodes. The behavior of the conductivity with pressure permits to define an activation volume and to infer the role of compressibility and diffusivity, the latter contributing dominantly to ionic conduction, whereas temperature does not seem to impact the structural properties. These features are linked with the underlying dynamics of the Li ions as studied here by computing the longitudinal and transversal atomic species current correlations. The resulting elasticity is found to be close to experimental values.

Discovery of pararealgar and semi-amorphous pararealgar in Rembrandt's The Night Watch: analytical study and historical contextualization

This article reports on the discovery of pararealgar and semi-amorphous pararealgar in Rembrandt's masterpiece The Night Watch. A large-scale research project named Operation Night Watch was started in 2019. A variety of non-invasive analytical imaging techniques, together with paint sample research, has provided new information about Rembrandt's pigments, materials, and techniques as well as the current condition of the painting. Macroscopic X-ray fluorescence, macroscopic X-ray powder diffraction and reflectance imaging spectroscopy identified the presence of arsenic sulfide pigments and degradation products of these pigments in the doublet sleeves and embroidered buff coat worn by Lieutenant Willem van Ruytenburch (central figure to the right of Captain Frans Banninck Cocq). Examination by light microscopy of two paint samples taken from this area shows a mixture of large sharp-edged tabular yellow and orange to red pigment particles, and scanning electron microscopy-energy dispersive X-ray analysis identified these particles as containing arsenic and sulfur. Using micro-Raman spectroscopy, the yellow particles were identified as pararealgar, and the orange to red particles as semi-amorphous pararealgar. Synchrotron-based X-ray diffraction allowed visualization of the presence of multiple degradation products associated with arsenic sulfides throughout the paint layer. The discovery of pararealgar and semi-amorphous pararealgar is a new addition to Rembrandt's pigment palette. To contextualize our findings and to hypothesize why, how, and where Rembrandt obtained the pigments, we studied related historical sources. A comprehensive review of historical sources gives insight into the types of artificial arsenic sulfides that were available and suggests that a broader range of arsenic pigments could have been available in Amsterdam in the seventeenth century than previously thought. This is supported by the use of a very similar mixture of pigments by Willem Kalf (1619–1693), a contemporary artist based in Amsterdam. Together with the condition of the particles in the paint cross sections, this brings us to the conclusion that Rembrandt intentionally used pararealgar and semi-amorphous pararealgar, together with lead–tin yellow and vermilion, to create an orange paint.

Zinc Extraction from Primary Lead Smelting Slags by Oxidant Alkaline Leaching

The purpose of this work is to obtain the optimum conditions for leaching the zinc contained in an industrial lead smelting slag. In this type of slag, zinc oxide, sulfide, and ferrite are contained. Zinc extraction from these compounds consists of using a single aqueous medium, where oxidant alkaline leaching with NaOH and NaClO was used. The parameters evaluated during the experiment were as follows: percentage of solids, NaOH/NaClO ratio, and temperature. The maximum amount of recovered Zn obtained during the leaching was 58%. This percentage was achieved by using the following optimal conditions: temperature of 60 °C, 0.22 of NaOH/NaClO ratio, 10% of solids, and a reaction time of 40 min. The calculated values of activation energy confirmed that the rate-limiting step of the reaction using the decreasing particle model is diffusion. The maximum percentage of zinc obtained could only have been achieved if the zinc oxide and part of the zinc sulfide (both present in almost equal proportions in the sample) were leached into the alkaline aqueous medium in the presence of NaClO.

Cu2(OH)3NO3 nanozyme sensor array for the discrimination of multiple sulfides in food

In the food industry, sulfides are commonly used as preservatives and flavor regulators. However, long-term excessive intake of sulfides can lead to serious health problems. Therefore, developing efficient sulfide detection methods is particularly important. Here, we have effectively synthesized a novel bifunctional copper hydroxide nitrate (Cu2(OH)3NO3) nanozyme with outstanding peroxidase-like and laccase-like behaviors in basic deep eutectic solvents (DES). Because the various types of sulfides have diverse regulatory effects on the two catalytic behaviors of Cu2(OH)3NO3, a two channel nanozyme sensor array based on the peroxidase-like and laccase-like behaviors of Cu2(OH)3NO3 was constructed and successfully used for the identification of six kinds of sulfides (Na2S, Na2S2O3, Na2SO3, Na2SO4, NaHSO3, and Na2S2O8). Remarkably, the sensor array has achieved successful discrimination among six sulfides present in wine, egg, and milk samples. Finally, the sensor array has successfully distinguished and differentiated three actual samples (wine, egg, and milk). This study is of great significance in promoting the efficient construction of array units and improving the effective identification of sulfides in complex food samples.

Application of Machine Learning to Research on Trace Elemental Characteristics of Metal Sulfides in Se-Te Bearing Deposits

This study focuses on exploring the indication and importance of selenium (Se) and tellurium (Te) in distinguishing different genetic types of ore deposits. Traditional views suggest that dispersed elements are unable to form independent deposits, but are hosted within deposits of other elements as associated elements. Based on this, the study collected trace elemental data of pyrite, sphalerite, and chalcopyrite in various types of Se-Te bearing deposits. The optimal end-elements for distinguishing different genetic type deposits were recognized by principal component analysis (PCA) and the silhouette coefficient method, and discriminant diagrams were drawn. However, support vector machine (SVM) calculation of the decision boundary shows low accuracy, revealing the limitations in binary discriminant visualization for ore deposit type discrimination. Consequently, two machine learning algorithms, random forest (RF) and SVM, were used to construct ore genetic type classification models on the basis of trace elemental data for the three types of metal sulfides. The results indicate that the RF classification model for pyrite exhibits the best performance, achieving an accuracy of 94.5% and avoiding overfitting errors. In detail, according to the feature importance analysis, Se exhibits higher Shapley Additive Explanations (SHAP) values in volcanogenic massive sulfide (VMS) and epithermal deposits, especially the latter, where Se is the most crucial distinguishing element. By comparison, Te shows a significant contribution to distinguishing Carlin-type deposits. Conversely, in porphyry- and skarn-type deposits, the contributions of Se and Te were relatively lower. In conclusion, the application of machine learning methods provides a novel approach for ore genetic type classification and discrimination research, enabling more accurate identification of ore genetic types and contributing to the exploration and development of mineral resources.

Nitrate Chemodenitrification by Iron Sulfides to Ammonium under Mild Conditions and Transformation Mechanism.

Autotrophic denitrification utilizing iron sulfides as electron donors has been well studied, but the occurrence and mechanism of abiotic nitrate (NO3-) chemodenitrification by iron sulfides have not yet been thoroughly investigated. In this study, NO3- chemodenitrification by three types of iron sulfides (FeS, FeS2, and pyrrhotite) at pH 6.37 and ambient temperature of 30 °C was investigated. FeS chemically reduced NO3- to ammonium (NH4+), with a high reduction efficiency of 97.5% and NH4+ formation selectivity of 82.6%, but FeS2 and pyrrhotite did not reduce NO3- abiotically. Electrochemical Tafel characterization confirmed that the electron release rate from FeS was higher than that from FeS2 and pyrrhotite. Quenching experiments and density functional theory calculations further elucidated the heterogeneous chemodenitrification mechanism of NO3- by FeS. Fe(II) on the FeS surface was the primary site for NO3- reduction. FeS possessing sulfur vacancies can selectively adsorb oxygen atoms from NO3- and water molecules and promote water dissociation to form adsorbed hydrogen, thereby forming NH4+. Collectively, these findings suggest that the NO3- chemodenitrification by iron sulfides cannot be ignored, which has great implications for the nitrogen, sulfur, and iron cycles in soil and water ecosystems.

Powering the Future by Iron Sulfide Type Material (FexSy) Based Electrochemical Materials for Water Splitting and Energy Storage Applications: A Review.

Water electrolysis is among the recent alternatives for generating clean fuels (hydrogen). It is an efficient way to produce pure hydrogen at a rapid pace with no unwanted by-products. Effective and cheap water-splitting electrocatalysts with enhanced activity, specificity, and stability are currently widely studied. In this regard, noble metal-free transition metal-based catalysts are of high interest. Iron sulfide (FeS) is one of the essential electrocatalysts for water splitting because of its unique structural and electrochemical features. This article discusses the significance of FeS and its nanocomposites as efficient electrocatalysts for oxygen evolution reaction (OER), hydrogen evolution reaction (HER), oxygen reduction reaction (ORR), and overall water splitting. FeS and its nanocomposites have been studied also for energy storage in the form of electrode materials in supercapacitors and lithium- (LIBs) and sodium-ion batteries (SIBs). The structural and electrochemical characteristics of FeS and its nanocomposites, as well as the synthesis processes, are discussed in this work. This discussion correlates these features with the requirements for electrocatalysts in overall water splitting and its associated reactions. As a result, this study provides a road map for researchers seeking economically viable, environmentally friendly, and efficient electrochemical materials in the fields of green energy production and storage.

Scanning electron microscopy analysis of non-metallic inclusions for making steels with superior mechanical properties

The objective of this novel research was to further understand the type, size and areal distribution of the non-metallic inclusions in bearing steels by applying state-of-the-art scanning electron microscopy (SEM) analysis in order to develop steels with superior properties. Ten samples were taken from bearing steel grade 52100 and analysed by SEM. It was concluded that SEM allows deeper understanding regarding the type, morphology, size, and distribution of the non-metallic inclusions by covering larger sample areas and accurate automatic energy dispersive X-ray microanalysis of the inclusions. While most of the non-metallic inclusions had an equivalent circle diameter (ECD) smaller than 20 µm, the main type of inclusions with ECDs larger than 20 µm were calcium aluminates. As the higher sulphur will tend to create sulphide type of inclusions and the lower sulphur will shift the inclusions towards calcium aluminate oxide types, it is recommended to keep the sulphur content at amounts above threshold that calcium aluminates appear.

Synergistic effect between amorphous ZrO2 modified support and Pd catalyst: Unveiling superlative sulfur resistance and exquisite catalytic hydrogenation performance

The presence of sulfides in the reaction system can seriously affect the stability and activity of the catalysts. In this paper, we compare the impact of introducing varying amounts of the metal oxide ZrO2 on the hydrogenation activity and sulfur resistance of Pd-based catalysts. The study examined the effect of calcination temperature for catalysts and various organic sulfide types on their catalytic performance. We employed multiple techniques to characterize the catalysts, including physical adsorption, TEM, XRD, XPS, H2-TPD, NH3-TPD, and Py-IR. The results revealed that the catalysts achieved 99.9 % conversion and exhibited 99.5 % selectivity towards 4-ethyltoluene when the Pd and Zr molar ratio was 1:5. Furthermore, they could withstand the presence of toxicants for over 10 cycles. The main reason for the difference in activity and stability between catalysts lies in introducing ZrO2 as a promoter. This introduction increases the number of acidic sites and enhances the electronic effect, thereby facilitating the cleavage of H2 by Pd0. The synergistic effect between Pd and ZrO2 decreases the strength of S-Me, impedes sulfide adsorption, and improves the sulfur resistance stability of the catalyst. This work demonstrates that ZrO2-modified Pd-based catalysts have great potential in the anti-sulfur system of olefin hydrogenation.

Evolution of the hydrothermal ore-forming system of Ashele VMS-type Cu-Zn deposit in Xinjiang, NW China: Insights from mineralogy and geochemistry of sulfides

The Ashele Cu-Zn deposit is one of the largest and most typical VMS-type Cu-Zn deposits in the Chinese Altai Mountains, Central Asian Orogenic Belt. The ore-forming processes of the Ashele deposit remains elusive, with particular uncertainties surrounding the physicochemical conditions underpinning their formation. In this study, major and trace element concentrations of the two types of sphalerite and sulfide sulfur isotopic compositions have been analyzed to constrain the mineralization conditions and ore genesis. Two stages of sphalerite have been identified, i.e., euhedral sphalerite of the early Cu mineralization stage (Sp1) and anhedral sphalerite of the late Zn mineralization stage (Sp2). Results show that Sp1 has relatively higher contents of In, Cu, Sn, and Hg, but lower levels of Cd, Ga, Ge, As, and Ag compared to that of Sp2. Utilizing the sphalerite GGIMFis geothermometer, mineralization temperatures for Sp1 and Sp2 were estimated at 225-296°C (average 258°C) and 166-264°C (average 210°C), respectively. Additionally, the Ashele sphalerite geochemistry suggests a relatively high sulfur fugacity during ore formation (lgfS2 = −8.99 to −6.55 for Sp1 and −13.58 to −6.83 for Sp2). The findings suggest an evolutionary trend of ore-forming fluids, characterized by a decrease in both temperature and sulfur fugacity from the early Cu mineralization stage to the later Zn mineralization stage. In situ δ34S values of sulfides (sphalerite, chalcopyrite, and pyrite) range from 0.84 ‰ to 6.07 ‰, indicating a sulfur origin from the thermochemical reduction of seawater sulfate and leaching of the underlying volcanic rocks, with a minor contribution from direct gas release from shallow magma chambers. Overall, this work unravels the physicochemical transformation between the two identified mineralization stages, thereby enhancing the understanding of the ore-forming process of the Ashele deposit.

Gold-arsenic sulfide mineralization of the Kayancha area, Gorny Altai

Gold-arsenic sulfide type mineralization has first been revealed for the Gorny Altai region. The mineralized zones associate with lamprophyre dikes and are controlled by steeply dipping faults transecting the Vendian-Cambrian terrigenous-carbonate-volcanogenic sequence. The ore bodies are localized in horizons of basic metavolcanic rocks, enclosed between limestone layers. The near-ore metasomatites are composed of the paragenesis of albite, magnesiosiderite, and sericite. The gold content is related to fine dissemination of arsenic pyrite and arsenopyrite. Gold in the primary and oxidized ores is&#x0D; submicroscopic and finely dispersed. The sulfur isotopic composition of the sulfides (δ34SCDT = 0 ‰) indicates an association of the mineralization with a deep-seated magmatic source. The Kokpatas gold deposit in western Uzbekistan is considered as an analogue.

Copper Alloy Design for Preventing Sulfur-Induced Embrittlement in Copper.

This study presents an experimental approach to address sulfur-induced embrittlement in copper alloys. Building on recent theoretical insights, we identified specific solute elements, such as silicon and silver, known for their strong binding affinity with vacancies. Through experimental validation, we demonstrated the effectiveness of Si and Ag in preventing sulfur-induced embrittlement in copper, even though they are not typical sulfide formers such as zirconium. Additionally, our findings highlight the advantages of these elements over traditional solutes, such as their high solubility and propensity to accumulate along grain boundaries. This approach may have the potential to be applied to other metals prone to sulfur-induced embrittlement, including nickel, iron, and cobalt, offering broader implications for materials engineering strategies and alloy development.

Discovery of novel β-elemene hybrids with hydrogen sulfide-releasing moiety possessing cardiovascular protective activity for the treatment of atherosclerosis.

Herein, a series of novel β-elemene hybrids with different types of hydrogen sulfide (H2S) donors was designed and synthesized for the first time. In addition, all compounds were tested for H2S release in phosphate buffer solution assay, among which the derivatives with 5-p-hydroxyphenyl-3H-1,2-dithiole-3-thione (ADT-OH) as the H2S donor released the best level. The results of the isolated vasodilation assay revealed that all the compounds exhibited a degree of vasodilatory effect, and the representative compound "β-elemene-H2S gas donor" hybrid L13-2h produced more than 50% vasodilatory activity at a concentration of 20 μM. Furthermore, L13-2h possessed good concentration dependence and significantly better vasodilatory activity than the lead compound L13. In the RAW 264.7 cellular lipid inhibition against oxidized low-density lipoprotein (ox-LDL) stimulation assay, eight compounds, including L13-2g and L13-2h, produced significant cellular lipid-lowering activity. The results of the further antioxidant activity study showed that the representative compounds L13-2g and L13-2h improved H2O2-induced oxidative damage in HUVEC cells and compound L13-2h exhibited excellent antioxidant damage protection activity compared to the positive control. Moreover, none of the target compounds appeared to be significantly cytotoxic at the tested concentrations. These results suggest that the hybridization of hydrogen sulfide donors with β-elemene provides a promising approach for the discovery of novel anti-atherosclerotic drugs from natural products.

Морфоструктурные особенности минеральных индивидов в рудах золотосульфидного типа. Забайкальский край

The article deal with the results of a study of the morphostructural features of gold sulfide type ore: the forms of ore mineral deposits, their spatial distribution and relationship. The results of crushed ore research are also reflected. The data obtained make it possible to choose of methods for technological ore processing.

Characteristics of the Kematu epithermal gold deposit at Tboli, Mindanao, Philippines

AbstractThe Kematu Au‐Ag epithermal deposit at Tboli area, Province of South Cotabato, Mindanao, Philippines, contains an inferred mineral resource of 3.8 million tonnes, at 8.7 g/t Au and 27 g/t Ag in 2012. The deposit is spatially and genetically linked to the volcanism related to the Parker Volcanic Complex of Pliocene to Holocene age. Local extension of the northwest‐trending splays of the faults in the Tboli area are associated with epithermal mineralization, including the Kematu Au‐Ag deposit. The study aimed to provide a detailed description of the characteristics and physicochemical processes involved in the formation of the Kematu Au‐Ag deposit on the basis of field occurrence, mineralogy, ore composition, mineral chemistry, and sulfur isotope data. The deposit is characterized by Au‐Ag bearing quartz‐adularia‐clay‐sulfide veins hosted in argillic‐altered andesite porphyry and coarse tuff of the Parker Volcanic Complex. The mineralization in the Kematu deposit is in the form of veins as well as open space fill and dissemination. Based on the observation of the ore bodies and petrographic analysis, three paragenetic stages with different vein characteristics have been identified. Stage 1 is dominantly quartz, adularia, and clay mineral veins, with electrum, sphalerite, pyrite, chalcopyrite, tetrahedrite‐tennantite, and galena. Stage 2 is coarse‐grained sulfide‐quartz‐adularia veins and in‐fill of vugs, consisting of sphalerite, pyrite, chalcopyrite, galena, tetrahedrite‐tennantite, and electrum. Stage 3 is massive calcite veins, with minor amounts of electrum, sphalerite, pyrite, chalcopyrite, and galena. The alteration mineral assemblage of the host rocks is chlorite‐illite‐adularia, indicative of neutral pH conditions. The FeS content of the Fe‐poor sphalerite in the stage 2 ranges from 0.03 to 1.07 mol%. Sulfur isotope compositions (δ34SCDT) of sulfides in all the stages range from 0.1‰ to 1.9‰ for pyrite, and −5.3‰ to 0.5‰ for galena, sphalerite, and chalcopyrite, where those in the stage 2 tend to have relatively lower values compared to those in the stages 1 and 3. The relatively narrow and close to zero δ34SCDT values suggest that the sulfur was mainly derived from a magma. The mineral assemblages of the stages 1, 2, and 3, and the sulfur fugacity (log fS2 = −12.5 to −8.8) and temperature (200–280°C) of ore formation based on the FeS mol%, electrum composition (at.%), and alteration mineral assemblage suggest that the Kematu deposit is of intermediate sulfidation type.

Experimental study on mineral processing of shallow oxidation ore in a hydrothermal metasamatic sulfide gold mine

The ore produced by a gold mine in Fujian province belongs to hydrothermal metasomatism sulfide type gold (silver) ore, and the shallow oxidized ore of the deposit has a gold grade of 0.91g/t. In order to understand the selectability of this oxidized ore, the selectability test study is carried out. Through the beneficiation test study, the concentration of-0.074mm is 70%, the concentration of isoopyl yellow is 150g/t, the concentration of butyl ammonium black is 50g/t, and the concentrate products of 16.98g/t can be obtained, and the gold recovery rate is 74.04%.