Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
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Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
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By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
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Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
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Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
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The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
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Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
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Hot-dip galvanizing is a common corrosion-preventive treatment for metals [1,2,3].It is widely used for its strong corrosion protection, low maintenance, high aesthetics, and malleability, and hot-dip galvanizing accounts for nearly half of all zinc used [4,5,6].However, during continuous hot-dip galvanizing process, the zinc bath is often …
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Finally, the iron-bearing concentrate with an iron grade of 54.79% and iron recovery ratio of 80.14% was effectively obtained. A novel technology, modified roasting in CO–CO2 …
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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 ...
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The first stage of steel production is blast furnace steelmaking, in which raw iron ore is converted into pig iron, which contains various amounts of carbon, silicon, manganese, …
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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.
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Slag produced as a byproduct in industrial processes, contains considerable metals contents, which need to be recovered to avoid environmental contamination. In present …
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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.
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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 …
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Researchers at Ural Federal University (UrFU) and the Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences (UrB RAS) have developed and …
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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 …
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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 …
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Ion exchange offers a highly selective approach to iron recovery, capable of efficiently removing iron ions from dilute solutions. The process involves minimal energy …
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A new process for green and efficient utilization of copper slag was put forward. • Addition of Na 2 O in slag promoted magnetite growth but decrease magnetite quantity.. Slag with 4 % Na 2 O had a markedly decreased viscosity and iron recovery rate of 81.08 %.. Na 2 O in ceramics reduced sintering temperature but meantime degraded …
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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, …
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Pyrolusite leaching slag is a Fe-containing slag generated from pyrolusite leaching process with SO2. Recovery of iron from the slag not only has economic benefit, but also prevents the secondary pollution to the environment. A novel lab-scale cyclic process for recovering iron from pyrolusite leaching slag was introduced. The process contains two steps: (1) …
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powder with an iron grade of 90.35% was obtained, and the iron recovery rate was 89.70%. A recent paper showed that the fayalite in the copper slag could be reduced by walnut shell char .
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In order to remove phosphorus element from steelmaking slag and decrease iron loss, malic acid was selected as the leaching agent to dissolve steelmaking slag. Firstly, the influences of different factors, such as malic acid concentration, slag particle size, temperature, liquid/solid ratio and stirring speed, on the leaching ratios of …
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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 ...
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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.
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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.
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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
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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).
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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 …
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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 …
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It provides enclosed equipment, eliminates dust and flue gas from the furnace and argon gas was charged into the heater box to maintain an inert atmosphere. ... Hwang, Hyun-Mook. Choi, A Study on the Recovery of Iron from Copper Slag with Temperature, International Journal of Applied Engineering Research, Number 2, 977-982 (2018). [7] …
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The Fe3O4 and Fe2SiO4 in copper slag were successfully reduced to metallic iron by coal-based direct reduction. Under the best reduction conditions of 1300 °C reduction temperature, 30 min …
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DOI: 10.30765/er.40.1.02 Corpus ID: 212698142; Dry magnetic separation technology for the recovery of iron minerals in fine-grained steel slag @article{Shi2020DryMS, title={Dry magnetic separation technology for the recovery of iron minerals in fine-grained steel slag}, author={Liang Chang Shi and Nan Sheng Wang and …
DetailsOur 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 …
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Arch. Metall. Mater. 63 (2018), 4, 1793-1798. 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 ...
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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 ...
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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 …
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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 ...
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Iron slag, a byproduct of the wet zinc refining process, contains a substantial amount of valuable metals such as iron and zinc, making it highly valuable for comprehensive recovery and reuse. However, before recovery, the iron slag requires dehydration pretreatment. The water content in iron slag r …
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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 …
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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 ...
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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, …
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