MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Overhaul slag (aluminum ash, cathode, carbon slag) grinding equipment quotation
电解铝大修渣处置研究进展
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 aluminum overhaul slag disposal, and points out the development direction of hazardous 2023年8月1日 The dissolution behaviors of overhaul slag were fitted by a mass transfer model to obtain the dissolution parameters including dissolution capacity and dissolution rate This work Dissolution behavior of overhaul slag from aluminum reduction With the rapid development of aluminium smelting industry in China, millions of tons of hazardous wastes such as carbon slag, overhaul slag and aluminum ash are generated every yearPresent situation of production, utilization and disposal of 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 The recycling of carbonrich solid wastes from aluminum
A novel approach for extracting lithium from overhaul slag by low
2024年2月1日 In this paper, an innovative process of sulfuric acid roasting and water leaching is proposed, which can efficiently and environmentally recover F, Al and Li from overhaul slag carbon blocks have been tried in industrialization in 300KA aluminum electrolytic pilot plant, the cathode voltage drop by 30 ~ 50 mv compared with contrast slot The results are expected to Environmental Science PAPER OPEN ACCESS You may also like +D This work presents a deep analyses of an environmentally friendly process to recover all valuable minerals contained in the spent potliner (SPL) such as graphite carbon and aluminum fluorideElectrolytic cell spent lining Fig 2 Overhaul slags of the 2024年2月1日 In this paper, an innovative process of sulfuric acid roasting and water leaching is proposed, which can efficiently and environmentally recover F, Al and Li from overhaul slag A novel approach for extracting lithium from overhaul slag by low
Research Progress of Electrolytic Aluminum Overhaul Slag Disposal
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 This article analyzes and summarizes the composition and hazards of the overhaul slag and the current development status of domestic and international electrolytic aluminum overhaul slag Research Progress of Electrolytic Aluminum Overhaul Slag Disposal2012年12月31日 3, 4 SCC contains many valuable inorganic compounds, such as alumina, cryolite, uoride, and aluminum silicate, and some carbon blocks also contain small amounts of cyanide 5,6 According to (PDF) Study on Harmless and Resources Recovery carbon anode slag, grinding flotation, carbon, cryolite, selectivity index 1 Introduction Cryolitealumina molten salt electrolysis has been the most commonly used process forRecovery of carbon and cryolite from spent carbon anode slag of
The recycling of carbonrich solid wastes from aluminum
2024年5月23日 16 Million metric tons of spent carbon electrodes modify carbonrich solid wastes from aluminum electrolysis are produced annually, threatening ecosystems by cyanide and fluoride pollution Here, we review carbonrich solid wastes with focus on sources and hazards, detoxification, separation, recovery, recycling and disposal Treatment techniques 2023年3月12日 3D response surface plot of γ −0074 mm as a function of the interaction: (a) grinding time × grinding concentration, 25 cm ball diameter; (b) grinding time × ball diameter, 60% grinding (PDF) Recovery of Carbon and Cryolite from Spent Carbon Anode Slag 2024年5月1日 The reason is that the lithium content in the overhaul slag is relatively low, and the minimum amount of sulfuric acid is enough to completely transform the lithium compound into NaLi(SO 4) More aluminum compounds are converted to NaAl (SO 4) 2, when m(H 2 SO 4)/m(overhaul slag) increase from 10 to 14Selective preparation of lithium carbonate from overhaul slag by 2024年2月1日 Overhaul slag, as one of the main hazardous solid wastes generated in the electrolytic aluminum, has high research value [12] The electrolytic cell lining is eroded by continuous chemical corrosion of hightemperature molten metal and salt, resulting in expansion and peeling off, leading to low production efficiency and degradation of performance [13]A novel approach for extracting lithium from overhaul slag by low
Harmless recovery and utilization of electrolytic aluminum spent
2023年12月1日 As a broadly utilized metal, aluminum incorporates an assortment of special properties such as light weight, great electrical conductivity, ductility, erosion resistance and great reducibility (Mahinroosta and Allahverdi, 2018)Aluminum, known as the "universal metal", contains a wide run of employments within the aviation, development, marine businesses and 2022年10月9日 Where, γ c refers to the yield of flotation concentrate (%); A c (%) and A f (%) are the ash content of flotation concentrate and feed material, respectively 3 Results and discussion 31 Characterization of raw carbon anode slag The cumulative particle size result is shown in Figure 1From Figure 1, the content of fraction size of 0125 mm–0074 mm (3076%) Recovery of carbon and cryolite from spent carbon anode slag of 2023年3月12日 The aluminum electrolysis industry continually and unavoidably produces hazardous solid waste in the form of carbon anode slag Carbon anode slag poses a serious environmental pollution risk, and it must be disposed of in a harmless manner On the other hand, it contains a few valuable resources, as well In order for the aluminum electrolysis industry to Recovery of Carbon and Cryolite from Spent Carbon Anode Slag During the production in the electrolytic aluminum industry, a significant volume of hazardous wastes is generated, including overhaul slag, aluminum ash, carbon slag, and WCC (waste cathode carbon block), with WCC being particularly hazardous due Ultrasoundassisted enhanced leaching of lithium and fluoride
Selective comminution and grinding mechanisms of
2022年1月10日 Selective comminution and grinding mechanisms of spent carbon anode from aluminum electrolysis using ball and rod mills January 2022 Physicochemical Problems of Mineral Processing 58(3):年10月1日 After paying attention to the severity of the problem, researchers carried out a variety of methods to deal with the overhaul slag Detailed research has been conducted on hydrometallurgy, pyrometallurgy, and material preparation (Li and Chen, 2005, Li and Chen, 2010, Mansfield et al, 2002, Shi et al, 2012)The electrolytes and impurities adsorbed on carbon Selective extraction of lithium and solidified fluoride from overhaul 2023年5月4日 Resource and harmless treatment of spent cathode carbon (SCC) in aluminum electrolysis and copper slag is a great significance in the environmental protection and sustainable development of resources This study proposes to use SCC as a reductant for copper slag cleaning and CaO as an additive to recover copper from the slag while achieving fluorine Fluorine Fixation During the Cotreatment of Spent Cathode Carbon 2022年9月27日 Spent cathode carbon (SCC), with high recycling potential of carbon, is an unavoidable solid waste in the aluminum electrolysis industry In this work, we proposed a combined alkali fusionacid leaching process for carbon recovery from SCC The possible chemical reactions of complex inorganic impurities in molten alkali were predicted and verified Purification of spent cathode carbon from aluminum electrolysis
Harmless recovery and utilization of electrolytic aluminum spent
DOI: 101016/jjclepro2023 Corpus ID: ; Harmless recovery and utilization of electrolytic aluminum spent cathode carbon block: A comprehensive review @article{Dong2023HarmlessRA, title={Harmless recovery and utilization of electrolytic aluminum spent cathode carbon block: A comprehensive review}, author={Liangmin Dong and Fen Jiao 2016年10月28日 The grinding efficiency of steel slag was obviously increased and the particle characteristics were improved after using grinding aids (GA), especially the particle proportions of 332 Mm were (PDF) Comparison of Grinding Characteristics of Converter Steel Slag 2024年10月1日 The influences of MSWI fly ash washing and blast furnace slag/bottom ash ratio on lowcarbon cementitious materials Author links Ren et al (Ren and Ling, 2021) and Mao et al (2020) combined washed MSWI FA with BFS, FGDG, and aluminum ash to prepare 2023), and the specific equipment models and analysis methods were The influences of MSWI fly ash washing and blast furnace slag2024年9月27日 Spent carbon cathode (SCC) is one of the major hazardous solid wastes generated during the overhaul of electrolysis cells in the aluminum production process SCC is not only rich in carbon resources but also contains soluble fluoride and cyanide, which gives it both recycling value and significant leaching toxicity In this study, we explore the properties, Methodological Review of Methods and Technology for Utilization
Study on thermal conversion and detoxification mechanism of
2024年2月1日 1 Introduction Spent carbon cathode blocks (SCCB) are produced during the electrolytic production of primary aluminum by molten salt of alumina and has been identified as hazardous waste due to its adsorption of a large amount of soluble fluoride and a small amount of cyanide (Silveira et al, 2002)Fluoride and cyanide in SCCB are easy to dissolve or hydrolyze 2021年9月17日 Upon holding for 60 min in air atmosphere first and then smelting with 144 wt% waste cathode carbon and 25 wt% CaO for 180 min in high purity Ar atmosphere at 1450 °C, the recovery rates of Cu and Fe reach 9589% and 9464%, respectively, and meanwhile greater than 90% of the fluoride from waste cathode carbon is transferred into the final slag as CaF2 and Iron and copper recovery from copper slags through smelting with With the rapid development of aluminium smelting industry in China, millions of tons of hazardous wastes such as carbon slag, overhaul slag and aluminum ash are generated every year In order to promote the refined management of hazardous wastes in China, an indepth research had been done, the current generation process link, pollution characteristics, utilization and Present situation of production, utilization and disposal of 2023年10月1日 Upon holding for 60 min in air atmosphere first and then smelting with 144 wt% waste cathode carbon and 25 wt% CaO for 180 min in high purity Ar atmosphere at 1450 °C, the recovery rates of Cu Harmless recovery and utilization of electrolytic aluminum spent
Study on Slagging Characteristics of CoCombustion of Meager
The ash samples were formed into ash cones with a base length of 7 mm and a height of 20 mm, and the ash melting points of the 12 groups of ash samples were measured under a weak oxidizing atmosphere using a ZDHR3 ash melting point tester Subsequently, the characteristic melting temperature of the ash was measured according to the754 Haiying Liu et al / Procedia Environmental Sciences 16 ( 2012 ) 749 – 757 Fig 6 EDS spectrum of Rich silicate phase 32 The embedded characteristics analysis of used cathode carbon blockStudy on Process Mineralogy of a Used Cathode of Carbon Block DOI: 101016/jegyr202304036 Corpus ID: ; Dissolution behavior of overhaul slag from aluminum reduction cell in a cryolitebased molten salt system @article{Yang2023DissolutionBO, title={Dissolution behavior of overhaul slag from aluminum reduction cell in a cryolitebased molten salt system}, author={Jianping Yang and X Lu and Dissolution behavior of overhaul slag from aluminum reduction 2024年5月1日 As a dangerous solid waste, overhaul slag has been treated harmfully and as a resource by many researchers The floatation chemical process could recover 959% carbon and 901% fluoride from the overhaul slag, but it makes the secondary wastewater treatment more difficult (Wang et al, 2012)Selective preparation of lithium carbonate from overhaul slag by
A Review of Secondary Aluminum Production and Its Byproducts
2021年7月30日 The aluminum metal and molten salt flux are tapped after the process, where the cooled flux along with the mixture of nonmetallic components is called salt slag or salt cake54 Salt slag contains 5–7 wt% residual aluminum metal, 15–30 wt% aluminum oxide, 30–55 wt% sodium chloride, and 15–30 wt% potassium chloride and, depending upon the 2023年1月20日 Abstract Industrial production processes generate a large amount of secondary resources (copper slag and spent cathode carbon (SCC)) every year Reducing copper slag by fixed carbon from SCC would fully utilize the substance and the fluxing effect of fluoride In addition to effectively utilizing hazardous waste resources, the reduction of copper slag using Effect of Fluorine on Copper Slag Properties and Structure During 2024年10月1日 The lithium content in the overhaul slag is more promising for recycling than that in the raw ore containing lithium The general lithium content of overhaul slag is 05 % − 40 %, which mainly comes from the LiF added in the electrolytic process to ensure the efficient production of the electrolytic processSelective extraction of lithium and solidified fluoride from overhaul 2021年5月1日 Request PDF Cotreatment of electroplating sludge, copper slag, and spent cathode carbon for recovering and solidifying heavy metals Electroplating sludge, a hazardous solid waste product of Cotreatment of electroplating sludge, copper slag, and spent cathode
Migration of fluorine during the reduction of copper slag from
2023年3月1日 In the reduction process, the fluoride acts as a flux, which reduces the viscosity of the slag In addition, fluorine enhances the carbothermal reaction of Fe 3 O 4 in the slag and the reducing agent carbon in SCC [34] Thus, the recoveries of copper and iron increased with the addition of cathode carbon2021年9月5日 Copper slag typically includes approximately 35–45 wt% Fe and 05–15 wt% Cu, and it is classified as a hazardous waste due to its considerable Cu, Pb, and Zn contents (Shibayama et al, 2010, Heo et al, 2016)Over 30 million tons of copper slags are generated worldwide from the copper pyrometallurgical process every year (Zhang et al, 2015, Zhou et Cotreatment of electroplating sludge, copper slag, and spent cathode 2018年11月21日 Coal is the primary source of energy in India Coal ash obtained after coal combustion is considered a waste and dumped near the plant Storage of coal ash close to thermal and other plants has now become a serious problem and creates environmental pollution Coal ash contains an appreciable amount of unburned carbon, which can be recovered and A process of carbon enrichment of bottom slag ash for value 2023年1月10日 Based on the above analysis, a novel cotreatment process for SCA and copper slag has been proposed for the first time In this industrial production, the F in the SCA reacted with CaO in the copper slag to form CaF 2, and the carbon in the SCA reacted with Fe 3 O 4 in the copper slag as a reductant to form FeO, which both reduced the viscosity of the slagCotreatment of spent carbon anode and copper slag for reuse
Graphite Block Rongxing Group
Graphite Carbon Block is a kind of carbonaceous refractory material made from coke, anthracite or graphite, and tar as raw materials after being mixed and shaped, and burned to 1450℃ in reducing flame The carbon mass fraction is 88% to 90% It can resist the erosion of molten metal and various slag, but it is easy to be oxidized2023年5月4日 The fluorides from spent carbon cathodes could be effectively solidified in a molten copper smelting slag (FeOFe3O4SiO2CaOAl2O3) in forms of CaF2 and Ca4Si2F2O7Fluorine Fixation During the Cotreatment of Spent Cathode Carbon industry (see in figure 1 and figure 2) The main composition and content of the slag are shown in figure 3 Main including: spent cathode carbon block, cathode paste, insulation brick, firebrick etc Fig1 Electrolytic cell spent lining Fig 2 Overhaul slags of the electrolytic cell The spent cathode contains a lot of fluoride and cyanideEnvironmental Science PAPER OPEN ACCESS You may also like +D 2018年4月19日 Abundant carbon resides in spent cathode carbon (SCC) of aluminum liquidsolid ratio of 15:1, 333 K, 120 min, 03 M NaF, carbon powder with ash in aluminum electrolysis and copper slag Separation and Recycling of Spent Carbon Cathode Blocks in the Aluminum
Ultrasoundassisted enhanced leaching of lithium and fluoride
During the production in the electrolytic aluminum industry, a significant volume of hazardous wastes is generated, including overhaul slag, aluminum ash, carbon slag, and WCC (waste cathode carbon block), with WCC being particularly hazardous due 2024年4月22日 Red mud and spent cathode carbon block (SCCB) are environmentally hazardous industrial wastes generated by the alumina and aluminum electrolysis industries, respectively In this paper, SCCB was applied to iron recovery from highiron red mud by vortex smelting reduction with the concept of ‘waste treatment by waste’ The experimental results Waste Treatment by Waste: Study on Iron Recovery from High