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A new technology is proposed in which waste cooking oil is used as a reductant to reduce magnetic iron in the copper smelting slag and consequently reduce carbon emissions in the copper smelting process. A kinetic model of the reduction of magnetic iron in copper slag by waste cooking oil was built using experimental data, and the accuracy of ...


SCIENTIFIC REPORTS ã 2406 1.13s41-1-2-y 1 Smelting reduction and kinetics analysis of magnetic iron in copper slag using waste cooking oil Bo Li1, Xubin Wang2, Hua ...


Paradigm Shift in Archaeometallurgy . In 2018, archaeologists from Tomsk State University in Russia conducted excavations of ancient iron smelting workshops on the banks of the Kuyakhtanar River. They used aerial photography and magnetic …


magnetic separation tests were also conducted on a three-shift-per-day basis, but the laboratory beneficiation tests and the steelmaking tests were made on day shift only. Electric pig iron smelting is well established in several European coun-tries and in Japan, and electric-smelting techniques have been described by Collin4 and others ...


Magnetic filtration has been applied in place of lime treatment by Feng and coworkers (2000).Ultrafine magnetic particles are used as magnetic seeds. At a dosage of 0.5 g/L magnetite, all fine precipitate flocs can be rendered strongly magnetic. The mine water is treated with hydrogen peroxide (to oxidize ferrous iron and manganese), followed by the addition of lime and magnetite to raise the ...


Roasting magnetic separation is one of the effective methods to select fine particles (<0.02 millimeter) for weak magnetic iron ore. The magnetization roasting magnetic separation method should be used when the mineral composition of the ore is …


The present invention provides a method of separating and recovering iron from a waste non-ferrous slag, generated in a process for smelting of non-ferrous metals, including copper, zinc and lead, in which a reducing agent and a reaction catalyst are added to the crushed waste non-ferrous slag, and the mixture is subjected to a reduction reaction, thereby converting amorphous iron oxides ...


The magnetic iron in the copper slag gradually transformed to fayalite, and the viscosity of the copper molten slag decreased as the magnetic iron content …


Fast and effective removal of elemental mercury in a wide temperature range is critical for the smelting industry. In this work, a recyclable magnetic iron sulfide/selenide sorbent is developed to capture and recover Hg 0 from smelting flue gas. Benefiting from Se doping, the Hg 0 capture performance of prepared FeS x Se y is significantly enhanced compared with traditional iron sulfide ...


The comprehensive recycling of zinc and iron from smelting waste containing zinc ferrite (SWCZF) remains a challenge. A study is to be the first proposed that hazardous SWCZF is directionally converted with SO 2 for simultaneous recycling of zinc and iron. In the first step, zinc and iron phases in SWCZF were transformed into zinc sulfate and ferric oxide via oriented transformation with SO 2.


Smelting is the production of metal, especially iron, from ore in a process that involves melting and chemical reduction of metal compounds into purified metal. it can also be seen as the various liquids or semi-molten solids produced and used during the course of such production. Read more: Raw materials used in making iron and steel.


A magnetic adsorbent (MA) was synthesized from wasted iron mud of a groundwater treatment plant using a novel one-step hydrothermal method. The results showed that Fe content of MA was 41.8 wt%, 2.5 times higher than that of iron mud, which was caused by hydrothermal dissolution of non-ferrous impurities under alkaline condition, such as quartz ...


Answer (1 of 4): At room temperature, the structure of pure iron is body centered cubic (BCC). When you add Carbon, other structures can be formed that are not BCC. Martensite is body centered tetragonal (BCT), Austenite is face centered cubic (FCC). Fe3C is called carbide, it is a ceramic and is...


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Smelting - Wikipedia

Smelting is a process of applying heat to ore in order to extract a base metal. It is a form of extractive metallurgy.It is used to extract many metals from their ores, including silver, iron, copper, and other base metals.Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases or slag and leaving the metal base behind.


The comparison of the magnetic characteristics of the material with the geophysical survey data illustrated the importance of using both magnetometry and magnetic susceptibility survey techniques to maximize the information from an iron-smelting site. The furnace was dated archaeomagnetically to the 14th century ad. The results demonstrate that ...


Ancient Iron-Smelting Site "East Hungai" on Olkhon Island (Lake Baikal, Russia): Rock-Magnetic Approach to Archaeological Problems Galina G. Matasova1,2*, Alexey Yu. Kazansky2,3, Nikolay O. Kozhevnikov1 and Mikhail S. Kustov4 1Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch of Russian Academy of Sciences, Russia


Fast and effective removal of elemental mercury in a wide temperature range is critical for the smelting industry. In this work, a recyclable magnetic iron sulfide/selenide sorbent is developed to capture and recover Hg0 from smelting flue gas. Benefiting from Se doping, the Hg0 capture performance of prepared FeSxSey is significantly enhanced compared with traditional iron sulfide, especially ...


Rock‐magnetic techniques were used to examine the topsoil layer of Kurma archaeological site (in the Olkhon region, on the north‐western coast of Lake Baikal, Siberia) in an effort to determine the possible sources of iron ores for iron‐smelting centres (at about the bc / ad boundary). Measurements have shown a magnetic enhancement of the topsoil due to magnetite grains resulting …


Modern potlines now typically have amperages from about 300 kA and up to about 600 kA, which are the largest cells in operation at present. These cells are placed side by side as shown in Figure 1, to reduce the adverse magnetic effects of the high electrical current and also to reduce the heat loss from the cells.Older cells, which can have amperages less than 200 kA, are often placed end to ...


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Magnet - DSP Wiki

DSP Wiki: The Dyson Sphere Program Wiki. Summary. Magnets are one of the basic crafting materials. The magnet can be made by the mecha from iron ore, or in the smelting factory.


The present invention provides a method of separating and recovering iron from a waste non-ferrous slag, generated in a process for smelting of non-ferrous metals, including copper, zinc and lead, in which a reducing agent and a reaction catalyst are added to the crushed waste non-ferrous slag, and the mixture is subjected to a reduction reaction, thereby converting amorphous iron oxides ...


Therefore, by using the magnetic difference between weakly magnetic iron minerals and non-magnetic gangue minerals, the iron minerals can be enriched by high-intensity magnetic separation. ... studied the recovery pig iron by Plasma smelting using thermal plasma technology. High-iron RM with Fe 2 O 3 content of 47.49% was properly mixed with ...


magnetic method is used to study mainly slags and fragments of iron-smelting kilns, and not the surrounding sediments. The few exceptions are: a paper by Vigliotti et al. (2003), where the magnetic properties of marine sediments deposited during the past 4000years in the Corsican


To improve the recovery of copper, the viscosity of copper molten slag is decreased by the reduction of magnetic iron, which, in turn, accelerates the settling and separation of copper droplets from the slag. A new technology is proposed in which waste cooking oil is used as a reductant to reduce magnetic iron in the copper smelting slag and consequently reduce carbon emissions in the copper ...


A magnetic adsorbent (MA) was synthesized from wasted iron mud of a groundwater treatment plant using a novel one-step hydrothermal method. The results showed that Fe content of MA was 41.8 wt%, 2.5 times higher than that of iron mud, which was caused by hydrothermal dissolution of non-ferrous impurities under alkaline condition, such as quartz and albite, regardless of addition of …


SAN FRANCISCO — Slag left over from Iron Age copper smelting shows the Earth's magnetic field was stronger and more variable than scientists ever imagined. "This is a …


Hendrickson's team studied furnace fragments, slag waste left over from iron smelting, and tuyères, or air-delivery pipes. When Tauxe and her team examined the iron waste, they found the Earth's magnetic field moved suddenly westward and then eastward between 1200 and 1300. They also noticed a sharp decline in the field's strength ...


The area was once host to ancient iron-smelting operations centered around a huge hematite deposit, Phnom Dek, which in Kmerian means "iron mountain."The researchers excavated a …


the results showed that the iron recovery rate and total iron content in the magnetic product could be up to 98.37% and 82.52%, respectively. Zhang et al. [22] reported a semi-smelting reduction and


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 results show that the iron nuggets and alumina slag can be ...


The area was once host to ancient iron-smelting operations centered around a huge hematite deposit, Phnom Dek, which in Kmerian means "iron mountain."The researchers excavated a …


1)Medium Frequency iron steel scrap melting furnace for smelting. 2)Full digital control system with high accuracy. 3) Melting steel, iron,stainless steel,copper,aluminium. 4)0.15-20 tons capacity. 5)Constant power output, speedy melting, good electricity saving efficiency. 6) …


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Iron ore - Wikipedia

Magnetizing roasting uses temperatures between 700 and 900 °C for a time of under 1 hour to produce an iron concentrate (Fe 3 O 4) to be used for iron smelting. For magnetizing roasting it is important to have a reducing atmosphere to prevent oxidization and the formation of Fe 2 O 3 because it is harder to separate as it is less magnetic.