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Iron blast furnaces (BF) generate approximately 0.25 to 0.30 t of slag per t of crude iron for typical ore grades, with higher amounts generated for low ore grades (up to 1.0 to 1.2 t of slag per t of crude iron). 1 Steel furnaces commonly produce approximately 0.2 t of slag per t of steel, with some being returned to the furnace to recover ...
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Sulfuric acid leaching of copper rich slag with the optimized parameters can provide a copper rich process solution with iron as the main impurity metal. The solution can provide an attractive feed for integration into the industrial primary copper production with acceptable low Ni, As and Pb levels (43.6 g/L Cu, 9.4 g/L Fe, 0.3 g/L Ni, 0.1 g/L ...
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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.
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Copper cathodes, plates, copper concentrate, sheet, scrap, iron ore, iron slags, manganese, aluminum ingots, metal scrap like scrap vessels, HMS 1&2, ferrous and non ferrous, used machineries, titanium tube condenser, used hand machineries (generators), 2nd hand i beams/h beams and angle bars, white sand (raw, vibro, gravel), aluminum …
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1. Introduction. The main method to obtain copper matte, a combination of copper sulfide and iron sulfide, is to treat the concentrated copper ores with a pyrometallurgical process, where the waste copper slag produced during the process is usually discharged after the recovery process (Guo et al., 2019; Li et al., 2021).Such a …
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Copper slag (CS) is produced in the smelting matte and refining of copper ore. China produces approximately 15 million tons of CS annually, with a cumulative stock of 300 million tons . CS contains several valuable metals, with the content of iron is close to the rich iron ore grades (> 50%) . At present, the utilization rates of iron and ...
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The recovery of iron from copper slag is an economically feasible and environmentally significant process due to the increasing volume of slag in primary copper production …
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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 reduction time, 35 wt.% coal dosage, and 20 wt.% CaO dosage (0.75 binary basicity), the Fe grade of obtained iron concentration achieved …
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In the main industrial waste residue, iron-ore slag falls under ore-dressing waste, while copper slag is categorized as ore-smelting waste. Iron-ore slag refers to the abandoned raw ore that is not selected in the SNCR process. It is a mineral aggregate containing iron elements or iron compounds. However, the utilization rate of such ore ...
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The zinc and copper dissolved in the iron olivine phase are selectively converted into copper sulfate and zinc sulfate, and the divalent iron in the slag is …
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Fayalite is the main phase of copper slag and a type of Fe silicate glass that is composed of a polymerized network of silicate tetrahedrons, in which SiO 2 and FeO are generally considered as network formers and modifiers, respectively. The structure of fayalite is shown in Fig. 13 [107].In iron silicate glass, O 2− exists in the form of bridging and non …
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Iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a relatively dense metal with a silvery white appearance and distinctive
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Approximately 2.0–3.0 t of copper slag (CS) containing 35%–45% iron is generated for every ton of copper produced during the pyrometallurgical process from copper concentrate. Therefore, the recovery of iron from CS utilizes a valuable metal and alleviates the environmental stress caused by stockpile. In this paper, a new method has …
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The most common ore minerals that remained in the slag sample were sulfidic solid solutions of copper and iron such as Cu 5 FeS 4, Cu 2 S, and Cu 9 S 5 (Figure 5b). The metallic constituents of slags …
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Iron grain growth during deep reduction roasting is important for iron enrichment from copper slag (CS) through magnetic separation. In this work, a novel method of additive-free activation roasting, including oxidation and subsequent reduction roasting, was proposed to increase the iron grain size, then the iron was extracted by magnetic …
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The annual output of steel is over 1.8 billion tons; therefore, millions of tons of pig iron derived from copper slag can be consumed in steel manufacturing. This method drives the construction of roads to solve the problem of copper slag utilization. The Cu content of the pig iron derived from copper slag is relatively high.
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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, silica, and alumina. Slag is a major problem in the metallurgical industries as it is dumped into heaps which have accumulated into millions …
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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.
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Globally a large volume of copper slag (Table 1) is produced which can be approximated to 2.2 tons of slag generated for every ton of copper produced [9].The annual worldwide production of slag is approximately 24.6 million tons in the early century [6, 7] and increasing at a rate of 11% per year [6].Table 1 illustrates the magnitude of …
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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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One layer is a waste containing iron and silica compounds and is discarded as slag slagByproduct left after a desired metal is thermally separated from its raw ore.. Approximately 75 percent of the copper concentrate ends up as slag. The other layer, called "matte copper," consists of copper, iron sulfide and other metals.
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The iron grade in copper slag is as high as 40%, which is higher than the average iron grade (35%) of iron ore in China . The recovery of iron from copper slag can not only alleviate the serious shortage of iron ore resources faced by the domestic steel industry, but also alleviate the environmental pressure caused by copper slag …
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The load resistivity of copper slag allowed it to be favourable for cutting non-ferrous metals, wood or plastics. W. S. Inynierska [109] reported that copper slag could be an efficient binder instead of ceramic binder in grinding wheel manufacturing. Improved grinding efficiency and decreased energy consumption were obtained by improving the ...
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Carbon mineralization technology has emerged as a promising method for permanently sequestering CO 2 by transforming it into a thermodynamically stable solid carbonate material. Recently, alkaline industrial waste, particularly from steel and iron-making processes, has been identified as a proper feedstock due to its high potential for …
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Iron in copper slag mainly exists in iron olivine, magnetite, zinc-iron spinel (ZnFe 2 O 4), and a very small amount of iron exists in the form of hematite and metallic iron. Zinc in copper slag occurs in zinc-iron spinel with content of 1–3%, besides, lead exists in copper slag in the form of lead alum (PbSO 4) .
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With the purpose of recovering the metal values, in this study the copper slag was reduced by coke and biochar at 1250 °C in an argon gas atmosphere using the isothermal reduction/drop quenching technique. The phase compositions of metal, matte, and slag were determined using electron probe microanalysis (EPMA). The effects of …
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Shamsi et al. [] studied the effect of copper slag particle size on the flotation effect, the highest copper recovery efficiency of 79.89%was achieved when the grinding time was 80 min and the grinding size was 48 μm [].Sibanda et al. [] controlled the size of copper slag and flotation reagents to improve copper recovery by 16% when the …
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---iron ore lumps (60% fe or more)---60% fe or more but below 62% fe: 5%: 01/07/2017: 26011112 ... containing mainly copper: 18%: 01/07/2017: 26203010: slag, ash and residues (other than from the manufacture of iron or steel), containing arsenic, metals or their compounds - containing mainly copper : brass dross ...
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DOI: 10.1016/j.fuel.2024.130875 Corpus ID: 266828541; Negative effect of industrial waste residue additives (IWRA) on NO reduction by selective non-catalytic reduction (SNCR) in cement plant: A comparison between copper slag and iron-ore slag
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Copper and nickel slags are produced by (1) roasting, in which sulfur in the ore is eliminated as sulfur dioxide (SO 2); (2) smelting, in which the roasted product is melted in a siliceous flux and the metal is reduced; and (3) converting, where the melt is de-sulfurized with lime flux, iron ore, or a basic slag and then oxygen lanced to remove ...
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