This review summarizes and analyzes the main reasons for the flotation process of coal gasification slag from three aspects (the flotation basis of minerals, difficult flotation, and difficulty of selection). The analysis is based on the development of an efficient collector for CGFS flotation, pretreatment of raw materials before flotation ...

The proportions of minerals in the sample of CGFS were obtained using X-ray diffraction (XRD) and the "K value method." Fig. 2 [19] shows that CGFS primarily contains quartz, calcite, potassium feldspar, plagioclase, and montmorillonite. A bulge peak is present at 20–30°, indicating that the fine gasification slag contains high amorphous …

Consequently, flotation was attempted to recycle Cu in slag containing copper sulphide components. Three key factors affecting flotation were ascertained, namely, grinding fineness, the collector and the pH value, while the recovery of Cu estimated by ICP and XRF. Copper concentrate grading at 14.47 with 79.66% Cu …

Slag cooling beneficiation, which uses the surface property differences of sulfide minerals and oxide minerals to enrich valuable elements in the slag concentrate, is the most widely used method ...

The impact of the collector and frother dosages on the separation of carbon and ash in coal gasification fine slag (CGFS) based on flotation using kerosene and compound collectors consisting of naphthenic acids and kerosene mixed at different ratios is investigated in this study. The physical properties of the original sample of CGFS, the …

In flotation residual carbon, the fraction of 38–75 μm is the dominant one and the LOI is about 63.5%. •. (2)The fixed carbon content increases with the increase of particle size. From the view of carbon content in flotation residual carbon, particle size over 75 μm has better fuel properties and its LOI exceeds 80%.

The invention relates to a gasification slag flotation collector and a preparation method thereof. CN113351376A[P]. (2021–09–07.) Google Scholar [93] W. Li. Study on the Mechanism and Molecular Simulation of Compound Reagents for Gasification Ash Flotation [D] China University of Mining and Technology, Xuzhou (2021) Google …

The relevant flotation research shows that the surface hydrophobicity of fine slag is very poor because of the physical and chemical properties of the surface of residual carbon particles in fine slag having been changed significantly due to the denudation of reactive gas under high temperature and pressure, with the surface oxidation degree ...

In this study, a hydrometallurgical method for the recovery of copper, cobalt, and zinc from copper slag flotation tailings (SFT) was investigated. SFT contains large …

Full size image. The copper content of copper slag is 0.5–4.5% or even higher, which is much higher than the 0.2–0.3% mining grade of copper mines in China. The total iron content in copper slag is about 40%, which is significantly higher than the mineable grade of iron ore in China (TFe > 27%) [ 10 ].

The subsequent ferric leaching of copper converter slag flotation tailings containing 0.53% copper and 2.77% zinc with the pregnant leach solution was conducted. The effects of various process ...

After copper recovery by flotation, the remaining part of the slag is considered waste and disposed of in the slag dump area. However, even after copper recovery, copper slag flotation tailings (CSFT) may still contain several metals in varying amounts. However, the complexity and low metal concentration have undermined the …

Abstract. Coal gasification fine slag is a solid waste of difficult-to-separate nature. In this study, the residual carbon was enriched from fine slag by conventional …

The flotation technology is an effective way to separate ash from gasification slag. 1.2 Preparation of formed activated carbon After high-temperature gasification reaction, the H/C atomic ratio and Vd of gasification slag were 0.09 and 2.11%, respectively. Gasification slag possessed a dense carbon skeleton, no cohesiveness …

In slag flotation concentrate, Cu, As and Zn show a medium risk, Cd and Ni show high and very high risk, respectively, Pb showing a low risk and Cr showing no risk. Most hazardous heavy metals in slag flotation tailing show low or no risk but a medium risk of Pb and Cd may make the limitation of the utilization of tailing. Arsenic is a major ...

Accompanying with the pyrometallurgical processes of copper, a large number of copper smelting slag is generated, in which. the average content of copper reaches more than …

slag produced by different processes [5]. Gasification slag is divided into coarse slag (CS) and fine slag (FS). As shown in Fig. 1, compared with CS, FS has a shorter residence time in the gasifier [7] and thus has a less adequate reaction and higher RC (RC in FS is denoted as FS-RC in the following sections) content (20wt%–60wt% in

The raw slag and flotation concentrate were subjected to SEM-EDS, the results of which are shown in Fig. 8. The combined separation process led to a concentrate with enriched residual carbon; the C content on the concentrate surface was determined to be 86.0%. Moreover, other inorganic non-metallic elements are generally present at …

DOI: 10.1016/j.jenvman.2023.119351 Corpus ID: 264332236; Recovery of residual carbon from coal gasification fine slag by a combined gravity separation-flotation process. @article{Lv2023RecoveryOR, title={Recovery of residual carbon from coal gasification fine slag by a combined gravity separation-flotation process.}, author={Bo Lv and Xiaoman …

The pyrolysis slag used in this study comes from Hunan, China, which is a solid product obtained by pyrolysis of sulfide concentrates. The main chemical components are shown in Table 1, and the XRD spectrum of the sample is shown in Fig. 1.As seen from Table 1 and Fig. 1, pyrrhotite (Fe 7 S 8) is the main iron-containing phase.The iron …

Shamsi et al. [] studied the effect of copper slag particle size on the flotation effect, the highest copper recovery efficiency of 79.89%was achieved when the grinding time was 80 min and the grinding size was 48 μm [].Sibanda et al. [] controlled the size of copper slag and flotation reagents to improve copper recovery by 16% when the …

The optimum flotation condition is 6 ∼ 7 kg/t of WCO with 3 kg/t of frother. In this condition, the recovery of unburned carbon increases to 89.59 ∼ 90.34 wt%, while the LOI of tailings decreases to 4.48 ∼ 4.15 wt%. Therefore, the WCO is a feasible and efficient flotation collector for carbon ash separation of the CGFS.

The slag from the customer's smelter furnace is processed at the Slag Flotation Plant (SFP) via various minerals processing technologies. The SFP plays an important role in extracting maximum …

Ti-extraction blast furnace slag (EBFS) is a secondary slag produced by titanium extraction of titanium-bearing blast furnace slag (TBBFS), which is challenging to be used directly because of its residual …

DOI: 10.1007/s42461-024-00931-5 Corpus ID: 267530735; Flotation Purification of Spent Anode Slag with Water-Soluble Kerosene: A Comparative Study @article{Wang2024FlotationPO, title={Flotation Purification of Spent Anode Slag with Water-Soluble Kerosene: A Comparative Study}, author={Shiwei Wang and Guomin Wei …

Moreover, the flotation kinetic model of copper slag was established and the results showed that the movement of copper slag in the flotation process conforms to …

Possibilities for minimizing copper losses in converter slags include: (1) settling the molten slag to recover entrained matte and copper, (2) smelting the slag …

The findings from this study further revealed the effectiveness of the bio‐surfactant‐assisted flotation process on the bio‐leaching of base metals from the slag sample. Flotation of silica ...

Prior to the flotation experiments, MG-Si refined slag was crushed to 2 mm particles and the MG-Si refined slag particles (300 g) were poured into rod milling with water (180 ml). After grinding for 15 min, the MG-Si refined slag slurry was obtained. The flotation experiments were performed using an XFD Ⅳ flotation machine. MG-Si …

Consequently, flotation was attempted to recycle Cu in slag containing copper sulphide components. Three key factors affecting flotation were ascertained, …

The aluminum electrolysis industry continually and unavoidably produces hazardous solid waste in the form of carbon anode slag. Carbon anode slag poses a serious environmental pollution risk, …

The selective sulfidation of lead smelter slag with pyrite in the presence of carbon and Na salts, and the flotation behavior of synthetic ZnS were studied. The effects of temperature, time, pyrite dosage, Na salts, and carbon additions were investigated based on thermodynamic calculation, and correspondingly, the growth mechanism of ZnS …

The tailing from the slag flotation has been subjected to sulphation roasting followed by water leaching as a hydrometallurgical means to recover the remaining Cu, Mo, Ni and Co. Based on the ...

The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitic-type of ancient copper slag containing 1.24% Cu, 0.53% Co and 53.16% Fe ...

Flotation of the slag sample having 0.8% Cu using butyl xanthate as the collector and terpene oil as the frother resulted in a flotation concentrate of 21.50% Cu at a recovery of 77.78%. Bulut et al. [25] investigated the froth flotation of a slag using Na 2 S as the sulphidation reagent. The optimized conditions increased copper values to 11% ...