Fine dust from copper smelting plants is an important source of raw materials for the extraction of various valuable metals. A specific feature of dust from copper smelting plants in Kazakhstan is their high arsenic content of up to 15%. This work shows the possibility of hydrometallurgical processing of fine dust from copper smelters, …
All the peaks are identified and matched with scorodite, except Extraction of copper by leaching of ESP dust and two step removal of arsenic from the leach liquor Fig. 3. XRD of the precipitated ferric arsenate (Scorodite). …
The study of copper (Cu) recovery is crucial for the entire recovery process of waste printed circuit boards (WPCBs), and Cu can be leached efficiently via a sulfuric acid–hydrogen peroxide (H 2 SO 4 –H 2 …
Highlights. •. pH is the key parameter influencing the leachability of heavy metals. •. The pH stat test is useful to assess the pH-dependent release of metals from …
Leaching Technologies of Secondary Dust Produced from Reduction of BFD. The hydrometallurgical processes are also used for leaching secondary dust, which …
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DOI: 10.1016/j.jenvman.2021.112348 Corpus ID: 232304882; Alkali circulating leaching of arsenic from copper smelter dust based on arsenic-alkali efficient separation. @article{Tian2021AlkaliCL, title={Alkali circulating leaching of arsenic from copper smelter dust based on arsenic-alkali efficient separation.}, …
1. Introduction. Currently, the main source of zinc metal is the traditional zinc resource—zinc sulfide ores. However, as the zinc consumption increases and the zinc sulfide ore grades deteriorate, the gap between supply and demand has become a major problem for the zinc industry [1,2].At the same time, large quantities of metallurgical slag …
As can be noted, 80.85% of zinc removal is possible from the coarse fraction using a simple sulphuric acid leaching and that is accompanied by 17.9% iron loss. This case corresponds to a grade of 0.39% zinc and 64.4% iron in a residue, which can potentially be recycled to the main process.
After thermal desorption, the total amount of heavy metals (HMs) is enriched in baghouse filter dust. To further understand the related environmental impact, the leaching characteristics under various conditions must be explored. Therefore, this study aimed to examine the leaching characteristics of seven HMs in the dust generated in …
Request PDF | Removal of cadmium and arsenic from Cd-As-Pb-bearing dust based on peroxide leaching and coprecipitation | As a byproduct of lead metallurgy, Cd-As-Pb-bearing dust, is a hazardous waste.
The study of copper (Cu) recovery is crucial for the entire recovery process of waste printed circuit boards (WPCBs), and Cu can be leached efficiently via a sulfuric acid–hydrogen peroxide (H2SO4–H2O2) system. To achieve high Cu recovery, it is important to evaluate the parameters of the leaching process and understand the Cu …
The wet separation system uses acid leaching to recover valuable and rare elements from the secondary dust. Acid leaching usually has the advantage of better …
Recycling of electric arc furnace (EAF) dust helps to avoid disposal of wastes, conserves resources, and minimizes its environmental impact. This study aimed to investigate the selective zinc removal from EAF dust by means of microwave heating oven as a heat source. The effect of microwave heating temperature on the selective zinc …
from sintering dust using thiourea. Green Process Synth 5:31–40. ... only 40 min were required for the ultrasound-assisted leaching process to achieve an iron removal rate of up to 74%. Under ...
Zinc oxide dust (ZOD) is an industrial solid waste produced in the production process of wet smelting Zn, with large output and great pollution to the environment. The recycling of metallurgical solid waste such as zinc oxide dust is very important to achieve the sustainable development of the circular economy. An …
1. Introduction. Currently, the main source of zinc metal is the traditional zinc resource—zinc sulfide ores. However, as the zinc consumption increases and the zinc sulfide ore grades deteriorate, the …
Blast furnace dust (BFD) is a by-product of iron-making process, a typical hazardous waste containing abundant recyclable components. In this study, a NH 4 Cl cooperative coordination leaching method was proposed for the selective separation and recovery of zinc from BFD. The thermodynamic analysis results revealed that ZnO and …
The effect of leaching parameters such as oxidant (i.e., ferric ion, oxygen or ozone), aqueous solution media (i.e., 0.2 M NH4Cl, 0.2 M HCl and 0.1 M H2SO4) and temperature (i.e., 27 and 80 °C ...
The impact of ultraviolet radiation (for 5 and 10 h) was evaluated also. Finally, some samples were subjected to pressure aging vessel (PAV) aging (Fig. 8) for 20 and 48 h. The PAV test was a simulation of long-term aging in the roadway of 8–10 years. Two leaching procedures were performed on the aged asphalt specimens.
Here, the authors report an electrochemical leaching method which can directly extract lithium from natural state spodumene ores with low energy consumption, …
Request PDF | Removal of zinc from basic oxygen steelmaking filter cake by selective leaching with butyric acid | Steelmaking dust is a hazardous waste material containing leachable compounds of ...
Leaching experiments were ran with and without sodium chloride, a range of NaCl concentrations from 1 to 4 M was added in the leaching solution; it was observed that copper and cobalt recovery was ...
Impact of desert dust on the biogeochemistry of phosphorus in terrestrial ecosystems Gregory S. Okin,1 Natalie Mahowald,2 Oliver A. Chadwick,3 and Paulo Artaxo4 Received 9 September 2003; revised 7 December 2003; accepted 16 January 2004; published 21 April 2004. [1] Leaching, biomass removal, and partitioning of phosphorus (P) into reservoirs …
Antimony smelting process generating solid wastes and dust: Characterization and leaching behaviors. Author links open overlay panel ... Use of sequential extraction procedure for assessing the environmental impact at regional scale of the Sao Domingos Mine (Iberian Pyrite Belt) ... Selective removal of As from arsenic-bearing dust rich in …
Schematic of aerosol metal dissolution and impacts on the ocean. Metal-bearing aerosols are emitted from natural (mineral dust, volcanoes, biological particles, and biomass burning) and ...
The technical and environmental aspects of treating electric arc furnace dust (EAFD) using a novel process including alkaline roasting and organic acid leaching were evaluated and compared to the globally applied conventional Waelz process.
A large amount of dust is formed as one of the primary by-products during the blast furnace ironmaking process. Besides iron and carbon, it contains a variety of valuable metals such as zinc, lead, and indium widely applied in many industry fields. However, it is difficult to recycle and reutilize blast furnace dust (BFD) due to complex composition, …
A telpic loading spout, also named as telpic loading chute or loading belows, is an efficient device for loading bulk materials into trucks, trains, and ships with integrated dust remover and automatic operartion. The loading capacity can …
Chemical leaching zinc from blast furnace dust concentrate (BFDC) treated by physical separation was investigated in order to reduce the content of zinc, and all common operating factors, such as ...
