Waste heat recovery of blast furnace slag in moving bed: …
Blast furnace slag (BFS) is one of metallurgical solid waste (Peng et al., 2018) and is considered a by-product of pig iron due to the wide range of uses in human society (Wu, 2022), composed of CaO, Al 2 O 3, FeO, MgO, MnO, and SiO 2 (Qin et al., 2012). BFS accounts for 80 %-90 % of the total metallurgical solid waste (Chen et al., 2022).
اقرأ أكثر
Copper Slag as a Source of Iron: An Overview | SpringerLink
In conclusion, the literature review indicates a growing interest in utilizing copper slag as a potential source of iron. The studies reviewed highlight the high iron content of copper …
اقرأ أكثر
Waste Energy Recovery Technology of Iron and Steel …
Introduction. The total energy consumption of the iron and steel industry accounts for about 26%. of industrial energy consumption in China, with the highest proportion of energy. consumption in ...
اقرأ أكثر
A critical review on metallurgical recovery of iron from iron …
Fig. 2 illustrates the iron ore beneficiation process, particularly magnetic separation, resulting in the generation of inevitable tailings. Due to the characteristics of iron ores and the conditions during beneficiation, it is inevitable that approximately 2.5–3 tons of IOTs are generated for every 1 ton of iron ore concentrate produced [7].In 2019, …
اقرأ أكثر
(PDF) High Temperature Rheological Characteristics of Iron …
Cita on: Okorie O (2020) High Temperature Rheological Characteris cs of Iron and Steel Making Slag and its Waste Heat Recovery-A Review. Adv Metallurg Mater Eng 3(1):104-116 Okorie.
اقرأ أكثر
A review on lead slag generation, characteristics, and …
The iron recovery from lead slag is difficult through the use of conventional mineral processing methods, whereas iron recovery is feasible via the direct reduction process (Guo et al., 2018). Iron is mainly in the form of fayalite (Fe 2 SiO 4 ) and magnetite (Fe 3 O 4 ); therefore, it can be extracted as iron concentration via direct reduction ...
اقرأ أكثر
Recovery of Iron and Aluminum from Bauxite Residue by
Abstract The recovery of major components of bauxite residue by carbothermic reduction at 1550–1750 °C and subsequent slag leaching in a Na3CO3(aq) solution is studied. Iron recovers primarily to pig-iron and lime is added to tune the calcium aluminate slags towards the highly leachable mayenite phase. The concentration of …
اقرأ أكثر
Extraction and separation of copper and iron from copper smelting slag
After cooling by the slag conveyor, the copper concentrate containing 29.44% copper and 30.39% iron and the iron concentrate containing 46.93% iron and 0.4% copper are obtained by the combined process of magnetic separation and flotation. The process flow is shown in Fig. 3 (Zhou et al., 2014).
اقرأ أكثر
Recovery of iron from waste slag of pyrite processing …
Recovery of iron from the waste slag is of great interest for maximum use of mineral resource, reduction of environment impact and improvement of economical benefits to the related companies.
اقرأ أكثر
Comprehensive review on metallurgical recycling and cleaning of copper slag
The smelting process can be divided into three stages, namely decomposition of high-valence sulphide, oxidation of sulphide, and matte smelting and slagging reaction (Fig. 1).The efficiency of matte smelting and matte-slag separation, as well as the extent of copper losses to slag are mainly affected by the oxidation/reduction …
اقرأ أكثر
Slag Recycling and Metal Recovery
Our plants utilize state-of-the-art magnetic separation equipment to maximize the recovery of metallics from the raw slag.The processing plants include the latest technology in crushing and screening plant design to cleanly separate the slag and metal into different …
اقرأ أكثر
The role of slag modifiers on the selective recovery of cobalt and
A carbothermic reduction of nonferrous smelter slag was conducted under the influence of three different slag modifiers to investigate the recovery of cobalt (and copper) versus iron recovery. The test work was performed in two campaigns; one campaign was performed under a constant oxygen potential of 4.33×10 −9 atm, while …
اقرأ أكثر
Recovery of iron from copper slag by deep reduction and …
Copper slag, carbon and additives like CaO are blended as an input material, where pellets can be produced [143,162,163]. Temperatures above 1100 °C were found suitable for a high Fe recovery ...
اقرأ أكثر
Recovery of iron from copper slag
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. Main components of copper slag are iron oxide and silica. These exist in copper slag mainly in the form of fayalite (2FeO ·SiO 2).
اقرأ أكثر
Carbon mineralization of steel and iron-making slag: Paving …
In particular, the annual amounts of iron slag and steel slag globally generated were estimated to be 390 Mt and 290 Mt, respectively, in 2022. Steel and iron-making slag contain 30–60 wt% of calcium oxide (CaO) and 3–15 wt% of magnesium oxide (MgO), suggesting high CO 2 storage capacities [19] .
اقرأ أكثر
Investigating the healing capacity of asphalt mixtures containing iron slag
To study the influence of healing time on the self-healing performance of a asphalt mixture with iron-slag additive, the healing times adopted were 10 min, 20 min, and 30 min; the iron slag content was 2%, and the damage degree was 50%. Three replicate tests were conducted. The research results are shown in Fig. 8.
اقرأ أكثر
Recovery of Iron from Nickel Slag in Water Vapor at …
reaction behavior of the complex nickel slag exposed to water vapor at high temperature has not been investigated. Some research has proposed an iron recovery method for the recovery of iron in the form of magnetic iron oxides (Fe 3O 4). 13,14 Because the iron-bearing samples consisted of mainly magnetite and hematite, the magnetite has ...
اقرأ أكثر
Granulation and Heat Recovery from Metallurgical Slags
While major strides have been made in this regard by increased recycling of metals, the introduction of breakthrough technologies such as steel continuous casting, or energy …
اقرأ أكثر
Investigating the Corrosive Influence of Chloride Ions on Slag Recovery …
An effective strategy for achieving cost-effective and environmentally friendly desulfurization wastewater in coal-fired power plants involves the incorporation of desulfurization wastewater into the slag water system. The objective of this study was to analyze the corrosion behavior of Q235-A slag-picker shell material upon the …
اقرأ أكثر
Basic Oxygen Steelmaking Slag: Formation, …
The BOS slag was considered a waste in old times but now as a secondary resource because it contains a large amount of thermal energy (temperature up to 1700 °C), chemical energy (metallic …
اقرأ أكثر
Application of iron and steel slags in mitigating greenhouse …
The following difficulties and obstacles exist in the recovery of energy from molten slag (Barati and Jahanshahi, 2020): (1) the low thermal conductivity of slag hinders the full extraction of heat; (2) slag is corrosive to the recovery equipment; (3) the waste heat recovery of hot slag is not conducive to the formation of the glass phase, and ...
اقرأ أكثر
Materials | Free Full-Text | Recovery of Zinc and Iron from …
Zinc-rich dust; Molten iron; Slag (1) Many types of dust that can be recycled (2) High metal recovery rate (3) High added value of the product (1) The operation cycle of the equipment is short (2) The smelting cost is high: DK: Pig iron; Zinc-rich dust (1) Well-established technology and reliable process (2) Low equipment investment
اقرأ أكثر
Semi-Smelting Reduction and Magnetic Separation for the Recovery …
This work presents a semi-smelting reduction and magnetic separation process for the recovery of iron and alumina slag from iron rich bauxite ore. The effect of the process parameters on the recovery rate of iron, maximum particle size of the iron nugget, and the Al2O3 content of the alumina slag was investigated and optimized. The …
اقرأ أكثر
Leaching behavior and microstructure of phosphorus in converter slag
Converter slag is a by-product of the steelmaking process and contains a large amount of Ca, Fe, P and other elements. If the phosphorus in the converter slag can be effectively extracted, the resulting phosphorus can be used as a phosphate fertilizer. Phosphorus in converter slag is mainly enriched in 2CaO·SiO2–3CaO·P2O5 …
اقرأ أكثر
A Thermodynamic and Experimental Assessment of the Recovery …
With the increases in the costs of iron and copper ores, the incongruity between the significant imports of these ores into China and the ongoing accumulation of unused copper slag has greatly increased. Even so, there are few low-value methods for the utilization of copper slag. The present work demonstrates the processing of this …
اقرأ أكثر
Recovery of valuable metals from copper slag | Mining, …
The copper smelting process produces plenty of copper slag every year, which is a hazardous solid waste, but a secondary resource. In the present study, the extraction of copper, nickel, and cobalt from copper slag was investigated through the process of sulfation roasting–water leaching and the process of sulfation …
اقرأ أكثر
What is a Slag Crusher Machine and How Does it Work?
A Jaw Crusher is a type of Slag Crusher Machine that uses two metal plates to crush the slag into smaller pieces. It is used in the first stage of crushing. Cone Crusher. A Cone …
اقرأ أكثر
Recycle Metal From Slag: The Recycling Process
Ball mill is for grinding slag (0-20mm) to 0-1mm or smaller size depending on customer requirement. Then output small fine powder go to shaking table for recovery the metals from slag. The shaking table has an extremely high recovery ratio for recovery heavy metals from slag. Then will get metal concentrate from the shaking table.
اقرأ أكثر
Recovery of low phosphorus iron from steel slag using …
2.2. Experimental procedure. The iron recovery experiment was performed in an electric tube furnace under an Ar atmosphere. First, the steel slag and quartz powder were mixed with various mass ratios according to Table 2.The mixtures were pressed into briquettes with a diameter of around 45 mm by a hydraulic press and then put into high …
اقرأ أكثر
Recovery of Iron and Alumina from Iron-Rich Bauxite, Red …
High iron bauxite (IRB), red mud (RM), and fly ash (FA) are resources rich in iron and alumina, yet there are no effective methods of recovering and utilizing them. In this paper, a new reduction smelting technology for the extraction of iron and alumina from IRB, RM, and FA is proposed based on the technology platform of "Slag Metallurgy, …
اقرأ أكثر