The separation of copper and arsenic has always been a major problem of the flotation beneficiation process, which is affected by the multiple factors: the chemical speciation and mineralogical structure of elements in slag as well as the processing conditions such as pH of the pulp, the concentration of agents and the number of additives, etc. (Ma et al., 2016; Alter, …
Coal gasification fine slag (CGFS) is a significant source of solid waste requiring improved treatment methods. This study primarily investigates the mechanism of ultrasonic …
In this work, based on the discovery of the covering between CGFS particles, the selective dispersion flocculation flotation method is proposed to improve the efficient …
TAKRAF provides you with the newest generation of DELKOR BQR flotation cells, equipped with the latest MAXgen mechanism. Get in touch with us to get more info! We look at the present, we see the future ... phosphates, graphite, slag and effluents. They feature a stator located on the floor of the tank, a rotor with a provision to introduce ...
In this study, a sodium carbonate combined with mechanical activation enhanced flotation for recovering copper from copper slag was developed. Based on the phase analysis, …
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 ...
When the copper in the slag is largely in sulfide phases, flotation of copper slag is similar to sulfide ore flotation of copper. 64−69 In the flotation of copper slag, oxides, alloys, and metallic phases containing Co and Ni are generally depressed and concentrated in the tailings. 6 Hence, copper slag flotation tailings (SFT) may contain ...
A large amount of silicon slag is inevitably produced during the smelting and purification process of silica sand. The recycling of silicon from industrial silicon slag has become an urgent problem in the silicon production industry. In this study, the aim is to separate and recover silicon with purity above 95% by flotation method and to ensure recovery rate above …
More than 30 million tons of coal gasification slag (CGS) are produced annually in China, and the primary disposal methods are piling and landfilling, resulting in significant land resource waste and potential environmental pollution(Lv et al., 2023a).Coal gasification slag including both coarse and fine slag, is composed of carbon and minerals such as silica …
In this study, iron selectivity behaviour of copper smelter slag (CSS) flotation tailings (38.08% Fe, 0.35% Cu, 4.48% Zn, 0.16% Co, 0.37% S) having fayalite and magnetite as major minerals was ...
Flotation experiments performed on metallurgical grade silicon have demonstrated that silicon (Si) can be floated in diluted solutions of hydrogen fluoride (HF) and a frother. The recovery was found to depend on HF conditioning time, frother type, and the concentration of both HF and frother. Although Brij 58 produced the highest recoveries of the frothers that was …
Various flotation reagents that are commonly used for copper flotation were identified, selected and used during the flotation test work in order to identify the best reagent …
Coal gasification fine slag (CGFS) is a significant source of solid waste requiring improved treatment methods. This study primarily investigates the mechanism of ultrasonic treatment in optimising flotation-based decarbonization of CGFS and its impact on CGFS modified with surfactants. The objective is to maximise the carbon ash separation effect to support the …
Coal gasification fine slag (CGFS), a byproduct of coal following the gasification process, consists of coarse and fine slag. Coarse slag typically contains less than 5 % carbon, while fine slag exhibits a higher carbon content. The carbon content is generally around 20 %, and in some regions, the carbon content CGFS can reach 57.40 % [5].
Two different routes were followed to recover the metal values. The first route was roasting the slag with pyrite followed by leaching. The second route was flotation of the slags, …
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 the first-order kinetics.
Emulsion collector can significantly improve the combustible recovery for coal gasification fine slag flotation. The Fuerstenau upgrading curve was applied to gasification …
Key words: metallurgical-grade silicon-refined slag; flotation; sodium silicate; depressant 1 Introduction The global output of metallurgical-grade silicon (MG-Si) has steadily increased [1] due to its wide range of applications [2,3]. Metallurgical- grade silicon-refined slag (MGSRS), a solid waste, is produced during MG-Si refining and ...
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 various sulphation roasting conditions (acid dosage, duration, temperature) copper, nickel and cobalt were brought to solution to a different extent. ...
The accumulation of gypsum slag not only causes resource wastage, but also poses serious environmental hazards, therefore, utilizing the resources of the main components in gypsum slag is an imperative task. In this study, gypsum was used as an inorganic depressant for the flotation separation of apatite from dolomite through the selective ...
Ultimately, silicon can be recovered from the MG-Si refined slag by flotation. However, for the oil concentrations greater than 250 g/t, the contact angle increased further, while silicon recovery decreased. This may be because excess oil can provide more hydrophobic groups and enhance the hydrophobicity of silicon. It also affects the ...
Copper smelting slag (CSS) is commonly generated during the smelting process of the copper concentrate, it comprises a range of valuable metals, especially the valuable copper (Cu), possessing the greatest recovery value. Currently, direct flotation is commonly used to recover Cu from CSS, but the Cu recovery rate is usually below 90%. To gain insight into …
The main methods of extracting carbon components from CGFS include flotation, gravity separation, and magnetic separation. Among them, flotation is characterized by high separation efficiency and simple process according to the hydrophobicity difference of the mineral surface [14].The oxygen-containing functional groups and fine particle size of residual carbon …
Coal gasification fine slag (CGFS) is a significant source of solid waste requiring improved treatment methods. This study primarily investigates the mechanism of ultrasonic treatment in optimising flotation-based decarbonization of CGFS and its impact on CGFS modified with surfactants. The objective is to maximise the carbon ash separation effect to support the clean …
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 ...
Li (Li, 2021) selected the flotation reagent with diesel collector as the main body, compounded the surfactants DTAB, TX-100, and SDS with diesel at mass ratios of 1%, 5%, and 10%, respectively, and explored their influence on flotation of gasification slag. The adsorption morphology and interaction energy between the surfactant and different ...
A particle mineralogical map for flotation slag sample (Fig. 1) shows the free fayalite, free bornite, locked fayalite with bornite and magnetite. It has been observed that the sulphide minerals occur as very fine grained; mostly present as inclusions within the host fayalite minerals. Magnetite occurs as small euhedral and subhedral grains ...
Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. This study consisted of the physical, chemical, and mineralogical characterization of the copper slag, along with preliminary flotation tests. This article focuses on industrial flotation, which consisted of two oneyear campaigns ...
