آخرین محصولات
Environmental and Socioeconomic Impact of …
Copper slag is generated when copper and nickel ores are recovered from their parent ores using a pyrometallurgical process, and these ores usually contain other elements which include iron, cobalt, …
Synergetic Modification of Industrial Basic Oxygen Furnace Slag …
Blast furnace (BF) slag and basic oxygenated furnace (BOF) slag from a steel mill, a drinking water treatment residual (DWTR) from a surface water treatment plant, goethite-rich overburden (IRON ...
Tendazole degradation by photo-NaOCl/Fe …
Tendazole degradation (TBZD) in diferent types of water matrices was assessed by applying two Advanced Oxidation Processes, both using simulated solar light (SSL), copper slag (CS) as …
A comprehensive review on the recovery of copper values …
The annual slag generation from the copper smelters reached a value of 43 million tonnes copper in the year 2020 (US [102]). The contribution of Asia to the global …
The Recovery of Copper from Smelting Slag by Flotation …
Materials. The smelting slag used in this study was obtained from a copper plant in China. Mineralogical analysis, performed using scanning electron microscope (SEM) and energy dispersive X-ray spectroscope (EDS), polarizing microscope and X-ray diffraction (XRD), indicated that fayalite (Fe 2 SiO 4) and magnetite (Fe 3 O 4) phases …
Reductive-sulfurizing smelting treatment of smelter slag for copper …
A promising copper–cobalt slag cleaning technique has been proposed, involving employing gypsum wastes as a sulfurizing agent to sulfurize copper, cobalt, and iron and enrich a condensed matte ...
Comprehensive review on metallurgical recycling and …
The metallurgical recycling of iron and copper from copper slag mainly depends on a transformation from nonmagnetic iron components (fayalite) into …
Comparison of environmental performance of modern …
Converter slag with an iron to silica ratio of 1.0 and 26% magnetite was produced with silica flux addition, slag was after cooling and crushing circulated back to …
98 IRON AND STEEL SLAG
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Effects of Copper Slag and Organic Matters on Physiological …
Effects of Copper Slag and Organic Matters on Physiological Indices of Iron Deficiency in Sorghum (Sorghum bicolor) 2022
Extraction and separation of copper and iron from copper smelting slag
Copper is an important metal widely used in electrical, light industry, machinery, construction, national defense and other fields because of its excellent ductility, conductivity and thermal conductivity (Gbor et al., 2000; Guo et al., 2018b; Potysz et al., 2015).Iron ore is the supporting resource of China's iron and steel industry, which is a …
Uncorrected Proof
copper slag as an iron catalyst, in spiked synthetic and real secondary wastewater treatment plant effluents Reyna García-Estrada, Sandra Arzate and Rosa-María Ramírez-Zamora *
Steel slag in China: Treatment, recycling, and management
Many restrictions exist, however, on the utilization of steel slag. When steel slag is used internally, in steel plants, the most obvious problem is that of the enrichment of P and S (Drissen et al., 2009).The Bhilai Steel Plant in India was shut down because of its high S and P content (Das et al., 2007).The amounts of free lime and free MgO are …
A review of metallurgical slag for efficient wastewater treatment …
2.1. Acid/alkali pretreatment of metallurgical slag. Acid treatment as a common pretreatment method for metallurgical slag usually used sulfuric acid (H 2 SO 4), hydrochloric acid (HCl) and nitric acid (HNO 3).The added acidic solution can react with the alkaline substances in the metallurgical slag, increase the specific surface and pore …
IRON AND STEEL SLAG
slag, most of which was granulated. Steel slag produced from basic oxygen and electric arc furnaces accounted for the remainder of sales. Slag was processed by 28 companies servicing active iron and steel facilities or reprocessing old slag piles at about 124 processing plants (including some iron and steel plants with more than one slag-
Characterization of copper slag for beneficiation of iron and copper
Similar compounds were found in cement and copper slag, such as Ca, Si, Al, Na, Fe, Mg, etc. The high peaks from the XRD image of copper slag indicate the presence of iron silicate fines and ...
Sustainable and Comprehensive Utilization of Copper Slag: A …
Within this paper, application options, the environmental behavior, and ways to treat copper slag in order to remove hazardous and recover valuable metals are …
Pressure Leaching of Copper Slag Flotation Tailings in …
It has been estimated that for every ton of copper produced, approximately 2.2–2.5 tons of slag is generated as a result of the relatively low grades of copper concentrates now available. 2 There are several copper smelting plants throughout the world, and this has resulted in the production of approximately 40 million tons per year of …
Environmental and Socioeconomic Impact of Copper Slag…
There are a significant number of copper processing plants around the world, and this has resulted in the production of about 24.6 million tons per year of slag, which is regarded as waste [7–9]. ... Therefore, there is a need for utilization of this generated copper slag. North America, Europe, South America, Africa and Oceania produced 5.90 ...
Advances in recovery of valuable metals and waste heat from copper slag
Each slag composition requires an appropriate treatment method for further metal recovery or for utilization as construction material [27,28]. Thermal reduction of copper smelter slags with solid ...
Minimization of Copper Losses in Copper …
Copper slag is a by-product obtained during smelting and refining of copper. Copper smelting slag typically contains about 1 wt.% copper and 40 wt.% iron depending upon the initial ore quality and the furnace type. …
A comprehensive review on the recovery of copper values from copper slag
A study by Andrzej et al. [8] on heat treatment of the grains of copper slag at 800–1000 °C showed improvement in mechanical properties of the slag as an abrasive, equivalent to corundum. 3.1.2. Pavement
Comprehensive Utilization of Copper Slag in a Pyro …
A pyro-hydrometallurgical process for the treatment of copper slag has been developed to accomplish recovery of nickel, cobalt, and copper and reuse of iron …
The Phase Transition and Element Distribution of Copper Smelting Slag
Sulfidation treatment of copper smelting slag. In the sulfidation experiment, the particle size of the synthesized slag was controlled below 80 mesh (178 µm).The mixture of CaSO 4 and anthracite was pelletized at a pressure of 1.0 MPa in a Ø 4 mm pressing tool, and the weight of every pellet was roughly controlled to be 0.04 g. Then …
Carbothermal reduction of copper smelter slag for recycling …
Fig. 1 shows that the phase diagram of Fe-Cu as well as copper content variation with temperature in Fe-Cu-C system. It indicates that ∼10% copper can be dissolved in the γ-iron phase at 1300 °C/1573 K (Fig. 1 a). Solubility of copper increases with lower carbon content and increasing temperature (Fig. 1 b).Since it is inevitable that …
Life cycle assessment of melting reduction treatment for iron …
The Iron and steel plant mainly uses steel slag as raw material, and dust removal ash, OG mud, gas ash, sulfuric acid slag as auxiliary materials. ... In the entire process of steel slag treatment, the GWP account for the 46% of total environmental impact, followed by AP (32%) and PED (15%). ... water footprint assessment of copper …
Minimization of Copper Losses in Copper Smelting Slag …
to perform this task, giving a level of copper in dis-card slag typically in the range of 0.55 wt.% and 1.3 wt.%,with most plants reporting copper losses in the discard slag in the range of 0.8–1.0 wt.%. A significant portion of the copper loss in discard slag from such furnaces is present as dissolved copper in the form of Cu
Sustainable and Comprehensive Utilization of Copper Slag: …
Metal Losses to the Slag in Smelting and Converting. 80% of the copper produced from ores worldwide originates from sulfide ores. The copper concentrate which results from flotation of the ore is typically smelted and converted to blister copper [].During smelting S and Fe are oxidized, where SiO 2 is added to form a liquid ferric or ferrous …
Characterization of copper slag for beneficiation of iron and copper
1.2. Objectives. The objective of this present study is to characterize the BCL copper slag and analyze its composition properties. In the past, research has been focused on ferrous and non-ferrous slags with the intention of employing the findings in various applications [].We had to carry out the characterization task first in order to quantify the …
CHAPTER 1: Introduction: Metallurgical Slags
Several major categories of slags exist, including: ferrous slags generated from the manufacture of iron (Fe) and steel products; ferroalloy slags formed from the …
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