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The first genuine example of a large-scale, continuous 2D MoS 2 film produced by vapour phase growth is the direct sulfidation of a pre-deposited thin molybdenum film (Fig. 4a and d). 116 Although delicate control of …
the bulk solution occurs immediately after mixing of the rich and sulfide-rich reagent streams, which tends to consume a significant part of metal cations, thus causing a …
The all-solid-state cell composed of sulfide electrodes and sulfide electrolytes can operate as a secondary battery over a wide temperature range of –30–+160 °C (ref. 22) without showing ...
During scale removal operations in early 2016 (Fig. 2c, d), a ROV-mounted hydraulic drill was used to retrieve a core sample of hydrothermal sulfide scale from the vent pipe at Hole C0014G. Scale within vent pipes is commonly assumed to form by conductive cooling of hydrothermal fluid under conditions that limit mixing with ambient …
Iron Oxide, Mill Scale 75 Iron Pyrites (See Ferrous Sulfide)-Iron Sulfate (See Ferrous Sulfate)-Iron Sulfide (See Ferrous Sulfide)-Iron Vitriol (See Ferrous Sulfate)-Kaffir Corn 40-45 Kaolin Clay, 3 Inch and Under 63 Kaolin Clay, Talc, 100 Mesh 42-56. Material Description Loose Bulk Density #/Ft. Kryolith (See Cryolite)-Lactose 32 Lamp Black ...
At the studied pH range (0–8), the solubility was the highest for iron sulfide scales compared to that of the other two (Pb and Zn). As an increase in the salinity and temperature, the solubility of the zinc and lead …
Impairment of flow by way of mineral scale formation is a major complication affecting production in the oil and gas industry. Soured reservoirs contain hydrogen sulfide (H2S) that can prompt the ...
Solubility test results with the new scale dissolver different concentrations at 45 and 35 C. Solubility, % New Scale Dissolver Scale Sample Time, hr.'s 45 C 35 C Concentration-1 71.18 66.67 Concentration-2 Bulk Sample 20 79.37 68.70 Concentration-3 69.54 61.55 Final Formula Mixture with 5 mesh size 24 91.78 79.05 As is clear in Figure 2, the ...
Naphthenic acid corrosion (NAC) is one of the major concerns for corrosion engineers in refineries. Traditionally, the iron sulfide (FeS) scale, formed when sulfur compounds in crudes corrode the metal, is expected to be protective and limit the NAC. Nevertheless, no relationship has been found between protectiveness and the …
Context 1 ... scale composition also contains lead sulfide (galena, PbS) with a portion range from 24.5% to 39.3%. Another bulk sample was recovered from an old plugged pipeline, as shown in...
Abstract: Sulphide scales have over recent years become increasingly common in many oil and gas producing regions. The main sulphide scales are iron, zinc and lead, with the …
Provided by the Springer Nature SharedIt content-sharing initiative. This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation. The fundamental aspects of the flotation of sulphide minerals both in the absence and presence of thiol collectors are discussed in relation...
The presence of iron sulfide particles in the injected water can cause loss of injectivity in power water injectors1–3 and water disposal wells.4 Accumulation of iron sulfide and biomass around ...
For low-cost and large-scale fabrication of SE-infiltrated NCM622 composite cathodes, a sulfide-type LPSCl SE solution (42.8:41.4:15.8 wt.% of Li 2 S/P 2 S 5 /LiCl) was prepared by a wet chemical ...
A sulfide-oxidizing microorganism, Desulfurivibrio alkaliphilus (DA), generates a consistent enrichment of sulfur-34 (34 S) in the produced sulfate of +12.5 per mil or greater.This observation challenges the general consensus that the microbial oxidation of sulfide does not result in large 34 S enrichments and suggests that sedimentary sulfides and sulfates …
Bulk rock and sulfide geochemistry. The samples from the Isola Sill have comparable major element geochemistry and contain around 44–50 wt% SiO 2 and 22–30 wt% MgO (Supplementary Data 1).The ...
The chemical composition of the bulk sample is presented in Table 2. This shows that the bulk sample contains a composite scale of paraffin wax, asphaltene, chlorides, calcium carbonate, a mixed iron, lead …
About 70-80% of the platinum group metals in the UG2 reef is associated with the base metal sulphides, while 10-20% are disseminated in the silicate gangue and 5% in the chromite. For Merensky and UG2 ores, flotation consists of a bulk sulphide float that recovers the base metal sulphides containing the noble metals and liberated PGM …
Thermophilic bioleaching of a Cu-Ni sulfide concentrate from the Aguablanca mine at 70°C was also tested at scale in an integrated pilot plant producing copper ... R. Natarajan, and N. Padmanabhan. 2001. Studies on recovery of copper, nickel, cobalt and molybdenum values from a bulk sulphide concentrate of an Indian uranium ore. ...
Herein, we report a general strategy to mechanically tailor semiconductor bulk materials into QDs. Semiconductor bulk materials are routinely available via simple chemical precipitation. From their bulk materials, a …
Bulk and grain-scale triple sulfur isotope data from core KEA-4. Here, the bulk SF 6 -derived δ 34 S (red) and Δ 33 S (blue) data are plotted stratigraphically, while …
This study presents interactions of lead sulfide and zinc sulfide coprecipitating with calcite. The relationship between bulk precipitation and deposition on a metal surface of the mixed …
Bulk flotation followed by a novel hydrometallurgical process can dodge these difficulties. In this work, an integral hydrometallurgical process consists of two ferric leaching steps, followed by a hot brine leaching stage, is proposed to recover target metals from a bulk sulphide concentrate (2.9% Cu, 7.4% Zn, 2.5% Pb, 67 ppm Ag and 37.2% Fe).
Here, we report that bulk antimony sulfide with a size of 10–20 μm exhibits a high capacity and stable cycling of 800 mAh g−1.
This review summarizes the syntheses and applications of metal oxysulfides. Bulk compounds of rare earth and transition metals are discussed in the section Introduction. After a presentation of their main …
The coprecipitation process for these scales was similar to field conditions in which CaCO 3 scales are deposited on metal surfaces and precipitated in the bulk solution. Sulfide scales have different effects on the type and medium (surface or bulk) of CaCO 3-scale deposition. Crystallization was found to be sensitive to changes in the brine ...
The study of iron sulfide scale formation is also of great impor-tance since it is the most abundant component in sulfide-rich scales. Despite the fact that the iron-sulphur system is perhaps the most extensively studied binary sulfide system, the laboratory synthesis and the identification of the various phases have encoun-
Impairment of flow by way of mineral scale formation is a major complication affecting production in the oil and gas industry. Soured reservoirs contain hydrogen sulfide (H 2 S) that can prompt the formation of exotic metal sulfide scales, leading to detrimental fouling that can negatively impact production. The contrast in the mode of precipitation (solid …
