— 1 Introduction Steel slag SS is a by product generated during the steelmaking process [[1] [2] [3]] Statistics indicate that global production of SS amounts to approximately 200 million tons annually with over 100 million tons being generated in China [4] This huge amount of SS not only occupies a significant amount of the limited land but
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— Fig 1 Processes for preparation of steel scrap Magnetic separation process Magnetic separation is used when a large quantity of ferrous scrap is to be separated from other materials Permanent magnets and electromagnets are used in this process The latter can be turned on and off to pick up and drop items
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— This quality protocol applies to England Wales and Northern Ireland 1 When the final product is no longer waste Aggregate product made from waste steel slag will be regarded as fully recovered
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— 1 Introduction Steel slag is a by product of the steel production process accounting for approximately 15% of the whole crude steel output [1] The accumulation of untreated steel slag not only occupies a significant amount of land but also leads to the leaching of heavy metal ions such as vanadium chromium arsenic lead cadmium
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— Basic oxygen furnace BOF slag is the main co product in the steelmaking process its recycling within the iron and steel enterprises is crucial for the industry to ensure greater sustainability
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It is found that the removal rate of hard to grind minerals in steel slag is the highest when steel slag enters magnetic separation particle size of 1 mm and magnetic field strength of 1400 Gs was used to crush the SS to − 3 − 2 − 1 and − mm To higher the efficiency required for grinding a roll dry magnetic separator XCG
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— To improve the efficiency of iron recovery from steel slag and reduce the wear and tear on facilities a new method was proposed by adding a secondary screen sizer to the magnetic separation process according to grain size distribution of magnetic iron M Fe in the slag The final recycling efficiency was evaluated by calculating the percentage
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— Solvent extraction of iron plays an important role in hydrometallurgy [18] [19] [20] wastewater treatment [21] environmental monitoring [22] [23] and soil and plant nutrient detection [24] To improve the separation technology of iron since the 1960s people have studied the removal of iron via solvent extraction and most of the research focused
— Steel slag could be valuable for promoting a sustainable relationship between the concrete and steel industries C 2 S C 3 S C 4 AF and C 3 A in steel slags are typical mineral phases of Portland cement indicating the potential of steel slags to function as hydraulic materials Therefore one recycling option is to grind steel slags into a fine
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— The dissolution of CO 2 in the aqueous ammonium salt solution is the speed control part of the Slag2PCC process Equation 2 Results reported that 4 5 mm CO 2 bubbles dissolved when they rose m in an unmixed water column Legendre and Zevenhoven 2016 2017 Recently Zevenhoven et al 2019 proposed that properly
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— 1 To Study existing arrangement of slag use at Jadhao Steel & Alloys 2 Collect mechanical information for slag use in steel commercial enterprises 3 To different metal from slag of affectation heater to expand the profitability 4 Analysis of metal contain in slag to lessening expense require for crude material
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— The cement industry significantly contributes to global CO 2 emissions with a notable portion attributed to limestone calcination during cement clinker production To promote carbon neutral building practices alternative approaches are being explored to replace raw materials in cement manufacturing and mitigate CO 2 emissions
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— Integrated steel plants utilize mostly five materials such as raw materials air water fuel and power to produce steel During the production of steel 2 4 t of wastes are being generated per tonne of steel various solid wastes in the form of slags and sludges that are emerged from steel plants are blast furnace slag blast furnace flue
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