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The recycling of carbonrich solid wastes from aluminum electrolytic

2024年5月23日  Here, we review carbonrich solid wastes with focus on sources and hazards, detoxification, separation, recovery, recycling and disposal Treatment techniques include 2024年2月2日  This study proposes the technology of using waste carbide slag to treat carbon dioxide in the tail gas of electrolytic aluminum and innovatively designs a Venturi Research on Using Carbide Slag to Mineralize the Carbon 2024年2月1日  The electrolytic aluminum industry generates a large amount lithium (Li)containing electrolytic aluminum slag (EAS) annually, and this can result in severe Efficient lithium recovery from electrolytic aluminum slag via 2022年12月12日  In this paper, the ultrahigh pressure contact molding technology is used for the first time to prepare highperformance building materials with aluminum ash and calcium Comprehensive performance study of aluminum ash and calcium

Recent research progress on recycling metallurgical waste slag

2024年11月1日  This study reviews the latest technologies for the recycling of steel slag (SS) and ladle refining slag (LFS), as well as the recent advancements in impurity element recovery 2024年7月24日  The lithium was selectively recovered and enriched from spent aluminum electrolyte slag by using calcium salt roasting transformation followed by HBL121solvent extractionCleaner Process for the Selective Extraction of 2023年4月25日  This article analyzes and summarizes the composition and hazards of the overhaul slag and the current development status of domestic and international electrolytic Research Progress of Electrolytic Aluminum Overhaul Slag 2023年3月12日  Carbon slag is an unavoidable solid waste in the electrolytic aluminum industry, which increases energy consumption, induces the anode effect, and so on Carbon slag is composed of 60–70% electrolyte fraction (Na Recovery of Carbon and Cryolite from Spent

Resource utilization of solid waste carbide slag: a brief

The conversation of solid waste carbide slag into useful products, such as cement, calcium carbonate, and calcium formate, is worthy of key research which not only improves the 2023年9月1日  This study employed hydrometallurgical processes to selectively leach lithium from Licontaining aluminum electrolyte slag, using sodium carbonate solution as the leaching agent A notable leaching efficiency of Clean Process for Selective Recovery of Lithium 2021年3月2日  for electrolytic aluminum waste is proposed This mode is to pulverize the electrolytic aluminum waste, and then mix the crushed electrolytic aluminum waste with the raw coal of the circulating fluidized bed boiler [6], then send it to the circulating fluidized bed boiler for combustion In this study, a mixed combustion experiment ofResearch on the Coprocessing of Mixed Electrolytic 2023年10月1日  Cryolitealumina (Na 3 AlF 6Al 2 O 3) molten salt electrolysis is the only modern method for the industrial production of metallic aluminum (Ishak et al, 2017)Under the influence of direct current, Al 2 O 3 dissolved in the molten salt is reduced to monolithic aluminum at the cathode (Haraldsson and Johansson, 2020)As the blood of the electrolytic cell, the electrolyte Efficient extraction and recovery of lithium from waste aluminum

Clean Process for Selective Recovery of Lithium

2023年9月1日  Lithium (Li)bearing aluminum electrolyte slag is an inevitable byproduct of the aluminum industry, and improper disposal or stacking it may lead to potential environmental hazards This study employed hydrometallurgical 2024年1月19日  Cement production is a major contributor to global climate change, with 42 billion tonnes of cement produced in 2020, accounting for approximately 8% of anthropogenic CO 2 emissions 1,2An Maximising the benefits of calcium carbonate in sustainable 2022年12月12日  Calcium carbide slag is a waste slag produced after the hydrolysis of calcium carbide to obtain acetylene gas, with very fine particles, offwhite color due to the presence of trace carbon and sulfur impurities, slightly odorous, with Ca(OH) 2 as the main component, and a slag liquid pH value of 12 or more, thus often causing serious pollution to the environment [18]Comprehensive performance study of aluminum ash and calcium 2024年1月12日  Steel slag is a byproduct 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), polluting surrounding water sources Review Accelerated carbonation of steel slag: A review of

A Novel Indirect Technique for Steelmaking Waste Slag

2012年6月1日  An innovative process for calcium carbonate production and possibly CO 2 sequestration through indirect carbonation of Basic Oxygen Furnace (BOF) slag generated during the steelmaking process is Limestone, as used by the minerals industry, is any rock composed mostly of calcium carbonate (CaCO 3) Although limestone is common in many parts of the United States, it is critically absent from some Limestone is used to produce Portland cement, as aggregate in concrete and asphalt, and in an enormous array of other products, making it a Limestone: The Calcium Carbonate Chemical Sedimentary 2022年2月19日  Recycling waste containing rare earth has always been a research hotspot The molten salt electrolysis process of rareearth metals and alloys generates a large amount of waste slag, which contains high rareearth content and, thus, has very considerable recovery value However, the high content of fluorine in rareearth molten salt slag brings challenges to the Recovery of RareEarth Elements from Molten Salt Electrolytic Slag A Novel Indirect Technique for Steelmaking Waste Slag Carbonation for Precipitated Calcium Carbonate Production Jean Mulopo, John Zvimba, Vivian Radebe, Lucky Bologo, Mlawule Mashego, LisaA Novel Indirect Technique for Steelmaking Waste Slag

Production of precipitated calcium carbonate (PCC) from steelmaking

2013年12月1日  Calcination of the limestone is energy intensive as it requires high temperatures (∼1000 °C) the objective of this study is to evaluate the feasibility of production of precipitated calcium carbonate from steel converter slag Calcium was extracted selectively from the slag with an aqueous solution of ammonium salt (NH 4 NO 3, CH 3 COONH 4 2009年12月1日  Four calcium aluminate cement mixes were manufactured from aluminum sludge as a source of calcium oxide and Al2O3 and aluminum slag (dross) as a source of aluminum oxide with some additions of Utilization of aluminum sludge and aluminum slag (dross) 2014年10月15日  Accelerated carbonation of alkaline wastes such as steelmaking slag offers the potential to combine waste valorisation with climate change mitigation by utilising carbon dioxide (CO 2)One method of achieving this is through an indirect carbonation process to produce a marketable precipitated calcium carbonate (PCC), using ammonium salts to selectively extract Calcium leaching from waste steelmaking slag: Significance of leachate 2014年12月1日  Precipitated calcium carbonate (PCC) is widely used as a filler and a pigment in various applications, eg in paper, plastics and pharmaceutics (Roskill Information Services, 2012, Stratton, 2012)The main PCC production method is the socalled carbonation process, in which limestone (CaCO 3) is first calcined in a lime kiln to calcium oxide, slaked with water to Cradletogate life cycle assessment of precipitated calcium carbonate

Research on the Coprocessing of Mixed Electrolytic

2021年3月2日  for electrolytic aluminum waste is proposed This mode is to pulverize the electrolytic aluminum waste, and then mix the crushed electrolytic aluminum waste with the raw coal of the circulating fluidized bed boiler [6], then send it to the circulating fluidized bed boiler for combustion In this study, a mixed combustion experiment of2019年9月30日  Electrolytic manganese residue (EMR), red mud (RM) and carbide slag (CS) are three kinds of solid waste which are largely produced and difficult to recycle EMR is a potentially harmful industrial solid waste, its major hazardous substances are heavy metals and ammonia nitrogen, which are harmful to the environment [1] Synergic effects of electrolytic manganese residuered mudcarbide slag 2014年1月1日  Calcium carbonate (CaCO 3) is a substance widely used for various purposes, for example, as a filler and pigment material not only in paper, plastics, rubbers, paints, and inks but also in pharmaceutics, cosmetics, construction materials, and asphalts and as a nutritional supplement in animal foods (1)Besides the socalled ground calcium carbonate (GCC), which Production of Precipitated Calcium Carbonate from Steel Converter Slag 2013年12月25日  Precipitated calcium carbonate, a widely used filler material, is nowadays mainly produced by the socalled carbonation process Natural limestone is first calcined and then contacted with carbon Chapter Ten – Production of Precipitated Calcium Carbonate

Calcium leaching from waste steelmaking slag

2014年10月1日  An approach involving calcium ion leaching from the waste slag with the ammonium salts, and subsequently reacting with CO 2 to produce precipitation calcium carbonate (PCC), has been reported 2020年11月26日  Diagram of the CaCO 3 precipitation process by the liquidliquid method using postdistillation liquid and (a) an aqueous solution of Na 2 CO 3 or (b) postfiltration solution from the Solvay processUtilization of Gaseous Carbon Dioxide and Industrial CaRich Waste 2013年5月28日  Blast furnace slag (BFS), a high volume byproduct resulting from the iron manufacturing industry, was used as a lowcost and abundant precursor for preparing a highsurfacearea calcium silicate hydrate The synthesis of slagmade calcium silicate hydrate (slagCS) was achieved via a facile twostep dissolution–coprecipitation procedure using HCl A novel conversion process for waste slag: synthesis of calcium 2021年5月1日  The smelting process can be divided into three stages, namely decomposition of highvalence sulphide, oxidation of sulphide, and matte smelting and slagging reaction (Fig 1)The efficiency of matte smelting and matteslag separation, as well as the extent of copper losses to slag are mainly affected by the oxidation/reduction potential, matte grade, smelting Comprehensive review on metallurgical recycling and cleaning of copper slag

Carbonation curing of alkaline industrial waste for binders: A

2020年10月26日  The potential of utilising alkaline industrial waste with weak or no cementitious properties for carbon dioxide (CO 2 ) capture and for new binders by accelerated carbonation was studied; steel 2023年11月25日  In response to the pressing global issue of reducing carbon emissions and the crucial technical challenges of fully utilizing steel slag, researchers have been studying an accelerated carbonation process that entails the carbonation of basic oxides in steel slag to store CO2 However, despite its promising potential, the process has yet to see widespread A review of use of metallurgical slag for its carbonation Discover the perfect Mining Crusher addition with our Calcium Carbonate CrusherMining crushers are commonly crafted using materials such as steel, cast iron, and aluminum alloys due to their durability and strength The selection of material typically depends on the intended application and the degree of abrasion or compression involvedCalcium Carbonate Crusher MadeinChina2021年7月14日  Ternary blends of OPC, calcined clays and limestone are emerging as a possible, less impacting cement binder []The environmental performance of such alternative binders can be further enhanced if waste calcium carbonate is used in the mix []Several studies have investigated the hardened properties of these blended cements, but the fresh state Use of Waste Calcium Carbonate in Sustainable Cement

Comprehensive performance study of aluminum ash and calcium

2022年12月12日  Calcium carbide slag is a waste slag produced after the hydrolysis of calcium carbide to obtain acetylene gas, with very fine particles, offwhite color due to the presence of trace carbon and sulfur impurities, slightly odorous, with Ca(OH) 2 as the main component, and a slag liquid pH value of 12 or more, thus often causing serious pollution to the environment [18]2023年8月1日  The combination of Na 2 CO 3 and other activators to activate the slag can make up for the shortcomings of using Na 2 CO 3 alone to activate the slag Dung et al [32] reported that the addition of magnesium oxide improved the early strength and carbonation resistance and shortened the setting time of Na 2 CO 3activated slag mortarsBian et al [33] introduced Durability performance of waste glass powder and calcium 2021年5月6日  Every year a million tonnes of calcium rich agro and industrial waste are generated around the whole globe These calcium rich waste like finger citron, shells of cockle, mussel, oysters etc, and egg shell are biological sources which have various organic compounds The inorganic calcium rich waste includes gypsum, dolomite, sludge etc, which are produced The Processing of Calcium Rich Agricultural and Industrial Waste 2023年3月21日  Microbialinduced CaCO3 precipitation (MICP) is an innovative and rapidly developing technology for sand solidification The idea for this research project was built based on the concept of sustainable development and environmental protection The specific material used for solidification was soluble calcium ions generated by the reaction of limestone waste, a kind Feasible Utilization of Waste Limestone as a Calcium Source

Research on the Coprocessing of Mixed Electrolytic

2021年3月2日  for electrolytic aluminum waste is proposed This mode is to pulverize the electrolytic aluminum waste, and then mix the crushed electrolytic aluminum waste with the raw coal of the circulating fluidized bed boiler [6], then send it to the circulating fluidized bed boiler for combustion In this study, a mixed combustion experiment of2023年10月1日  Cryolitealumina (Na 3 AlF 6Al 2 O 3) molten salt electrolysis is the only modern method for the industrial production of metallic aluminum (Ishak et al, 2017)Under the influence of direct current, Al 2 O 3 dissolved in the molten salt is reduced to monolithic aluminum at the cathode (Haraldsson and Johansson, 2020)As the blood of the electrolytic cell, the electrolyte Efficient extraction and recovery of lithium from waste aluminum 2023年9月1日  Lithium (Li)bearing aluminum electrolyte slag is an inevitable byproduct of the aluminum industry, and improper disposal or stacking it may lead to potential environmental hazards This study employed hydrometallurgical Clean Process for Selective Recovery of Lithium 2024年1月19日  Cement production is a major contributor to global climate change, with 42 billion tonnes of cement produced in 2020, accounting for approximately 8% of anthropogenic CO 2 emissions 1,2An Maximising the benefits of calcium carbonate in sustainable

Comprehensive performance study of aluminum ash and calcium

2022年12月12日  Calcium carbide slag is a waste slag produced after the hydrolysis of calcium carbide to obtain acetylene gas, with very fine particles, offwhite color due to the presence of trace carbon and sulfur impurities, slightly odorous, with Ca(OH) 2 as the main component, and a slag liquid pH value of 12 or more, thus often causing serious pollution to the environment [18]2024年1月12日  Steel slag is a byproduct 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), polluting surrounding water sources Review Accelerated carbonation of steel slag: A review of 2012年6月1日  An innovative process for calcium carbonate production and possibly CO 2 sequestration through indirect carbonation of Basic Oxygen Furnace (BOF) slag generated during the steelmaking process is A Novel Indirect Technique for Steelmaking Waste Slag Limestone, as used by the minerals industry, is any rock composed mostly of calcium carbonate (CaCO 3) Although limestone is common in many parts of the United States, it is critically absent from some Limestone is used to produce Portland cement, as aggregate in concrete and asphalt, and in an enormous array of other products, making it a Limestone: The Calcium Carbonate Chemical Sedimentary

Recovery of RareEarth Elements from Molten Salt Electrolytic Slag

2022年2月19日  Recycling waste containing rare earth has always been a research hotspot The molten salt electrolysis process of rareearth metals and alloys generates a large amount of waste slag, which contains high rareearth content and, thus, has very considerable recovery value However, the high content of fluorine in rareearth molten salt slag brings challenges to the A Novel Indirect Technique for Steelmaking Waste Slag Carbonation for Precipitated Calcium Carbonate Production Jean Mulopo, John Zvimba, Vivian Radebe, Lucky Bologo, Mlawule Mashego, LisaA Novel Indirect Technique for Steelmaking Waste Slag

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