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
High mud tailings treatment
Current state of fine mineral tailings treatment: A critical review on
Presented facts on escalating generation of fine mineral tailings worldwide Overview of coal, alumina, oil sands, and base metals tailings characteristics Reviewed theoretical and 2014年4月1日 This review broadly examines current theoretical understandings and prevalent industrial practices on treating fine mineral tailings for greater water recovery and reduced Current state of fine mineral tailings treatment: A critical review on 2019年12月10日 Accelerating natural desiccation of waterrich mud tailings deposited in a large open area reduces the impacts and risks of tailing consolidation to the environment and Experimental study on darkening waterrich mud tailings for Tailings management is typically easier, at least physically, in dry climates, where advantage can be taken of desiccation (that is, drying by exposure to the wind and sun) to naturally dewater, MANAGEMENT OF TAILINGS: PAST, PRESENT AND FUTURE
Alkalihydrothermal activation of tailings with red mud as a
In this study, an alkalihydrothermal method was used for the tailings activation, with the highalkaline red mud as a supplementary alkali source Two different types of activated tailings Mine tailings (MTs) are the materials dumped on a mining site after mineral extraction, containing scattered traces of residual minerals, dugup soils, and a disturbed ecosystemBioremediation techniques for the treatment of mine tailings: A 2022年4月15日 Dewatering tailings to a pastelike consistency is a popular option to reduce tailings volumes and increase dam safety, but dewatering further to a bulk cake consistency has mostly been reserved for small operations in Dewatered and Stacked Mine Tailings: A Review ACS 2022年4月8日 In view of the current situation that the massive discharge of highiron red mud in China needs to be dealt with urgently, this paper proposes a method for iron extraction by the direct reduction of highspeed rail red mudStudy on Reductive Smelting of HighIron Red Mud for
Improving Tailings Dam Safety via Soil Treatment MDPI
2023年10月25日 The performance of a tailings dam that is constructed using treated tailings with 75% admixture of (1 CKD:1B:1OC), where OC is ordinary cement, is analyzed and compared with a raw case The effects of tailings 2022年4月8日 In this paper, the characteristics and current problems associated with red mud and the progress of research on iron extraction from highiron red mud are briefly described By adding conditioning materials to red mud and Study on Reductive Smelting of HighIron Red Mud 2018年2月2日 But the treatment condition is rigorous with high temperature and high alkaline concentration which results in higher requirement for equipment The costs for the evaporation to high concentrations are very high The treatment effect of red mud is unstable, and the content of alkali in some tailings is 2%, which cannot be used in cement prehensive Utilization of Red Mud: Current Research2022年4月8日 of the calcification treatment of red mud from the Bayer process is that calcium and sodium The chemical composition analysis of calcified iron extraction tailings from highironStudy on Reductive Smelting of HighIron Red Mud
Increasing Iron Recovery from HighIron Red Mud by Surface
2023年5月2日 Economical recovery of iron from highiron red mud will benefit the comprehensive utilization of the mud, but current practice is restricted by poor magnetism and mutual embeddedness of ultrafine ironbearing minerals This work determined the effect of surface magnetization on iron recovery from ultrafine goethite and red mud by magnetic Current State of Fine Mineral Tailings Treatment: A Critical Review on Theory and Practice Chen Wang, David Harbottle, depletion of highgrade mineral ore deposits, Global inventory of the highly alkaline byproduct (red mud) from alumina production using the Bayer process has surpassed 25 billion tonnes in 2007 with a predictedCurrent state of fine mineral tailings treatment: A critical review 2020年1月28日 Meanwhile, the highiron red mud can be treated on a large scale to reduce the environmental pollution and realize the harmless and highvalue treatment of red mud For iron recovery , a lot of efforts have been conducted in four approaches: directly physical magnetic separation , hydrometallurgical recovery , solid state reduction followed by magnetic A Review of Comprehensive Utilization of HighIron Red Mud 2016年9月23日 However, being insoluble in caustic liquor, the impurities produce the insoluble red mud residue The red mud liquor being strongly alkaline with a high pH, requires neutralization to a pH below 9 with an optimum value of 85–89 before becoming environmentally benign (Hanahan et al 2004)Neutralization of red mud to pH around 80 is optimal because the Structural Amelioration of Indurated GypsumTreated Bauxite Red Mud
Increasing Iron Recovery from High‐Iron Red Mud by Surface
of ironbearing minerals in red mud was reported Highpressure hydrothermal complete reduction was used to recover iron from highiron red mud in an alkaline system at 260 °C; the Fe reduction rate was 9846% [24Fe] 3 O 4 magnetic adsorbent was obtained via a facile hydrothermal route with ascorbic acid at 200 °C for 10 h [25] Howof HighIron Red Mud of China Ting’an Zhang, Kun Wang, Yan Liu, Guozhi Lyu, Xiaofei Li, and Xin Chen Abstract With the increasing requirement of environmental protection, the treatment of red mud has become a more and more important issue Depending on the various iron contents, red mud can be divided into lowiron red mud and highiron red mudA Review of Comprehensive Utilization of HighIron Red Mud2022年4月6日 A novel method of extracting iron from highiron red mud and preparing lowcarbon cement clinker from tailings was proposed Thermodynamics of smelting reduction were calculated The effects of different conditions on iron recovery were investigated systematically Properties of cement samples prepared from water quenched slag were analyzed Results A Novel Method of Extracting Iron from HighIron Red Mud and 2024年5月22日 Red mud, a byproduct of aluminium production, has significant environmental implications, requiring extensive land, substantial earth material, and considerable expenditure for disposal Its high alkalinity and toxicity threaten air, land, and water resources Proper management of red mud is crucial for environmental protection This study employed bio Experimental Study on Biocementation of Red Mud Through
Improving Tailings Dam Safety via Soil Treatment
2023年10月25日 Mine tailings are the byproduct of mining activities, which need to be disposed of once the minerals in the ore are extracted They can be disposed of in either dry or wet forms The latter is most common, with the 2022年12月2日 The storage of tailings not only encroaches on large areas of farmland, but also causes additional ecological and environmental risks In the study, red mud and fly ash were used as cementitious materials to stabilize the tailings contaminated with arsenic (As) and antimony (Sb) under different conditions The stabilization mechanism of As and Sb was described In Situ Remediation and Stability Assessment of Solid Waste2017年6月24日 Bayer’s process revolutionized the extraction of aluminum from the bauxite ores However, the hydrothermal extraction of alumina is associated with the generation of a byproduct, redmud consisting of undissolved solids composed of iron oxides, sodium alumino silicates, titania, silica and rare earth elements The accumulation of redmud (or bauxite residue) in the Materials sustainability for environment: Redmud treatment2017年10月10日 Due to highmud content in superfine unclassified tailings (SUT), the viscosity of cemented paste backfill (CPB) is high and its pipeline transportation properties are poorUtilization of Foaming Technology in Cemented Paste Backfill of High
Treatment of Percolate from Metal Sulfide Mine Tailings with a
2010年4月1日 Metal sulfide tailings of the Sardinian (Italy) abandoned Baccu Locci arsenic mine show high concentrations of aluminum, arsenic, cadmium, copper, manganese, lead, and zinc in acid percolate (pH DOI: 101016/jjwpe2021 Corpus ID: ; Study on the preparation of polysilicate ferric flocculant and its treatment of high turbidity tailings water @article{Xu2021StudyOT, title={Study on the preparation of polysilicate ferric flocculant and its treatment of high turbidity tailings water}, author={Min Xu and Wen Juan Zhou and Zhao Yang Zhu and Changyao Peng Study on the preparation of polysilicate ferric flocculant and its 2021年2月1日 was proposed for red mud treatment [41,42], but alkaline leaching of the tailings led to the recovery only alumina and sodium without the extraction of other valuable elements It has shown [43] that the addition of sodium salts such as NaResearch on highpressure hydrochloric acid leaching of scan 2018年11月20日 Ore complexity: The ore deposit evaluated consisted of predominantly copper oxide minerals (Yang et al, 2012) such as malachite (Cu 2 (OH) 2 CO 3), cuprite (Cu 2 O), chrysocolla ((Cu, Al) 2 H 2 Si 2 O 5 (OH) 4 nH 2 O) and chessylite (Cu 3 (CO 3) 2 (OH) 2), making the ore somewhat complexThe proportion of alkaline minerals (CaO, Al 2 O 3) Enhancement of copper recovery by acid leaching of highmud
The harmless and valueadded utilization of red mud: Recovering
2024年4月1日 Red mud (RM) is an alkaline waste residue discharged in alumina production RM accumulation harms the environment and human health, making it urgent to find harmless treatment methods RM contains abundant iron resources and potential pozzolanic activity minerals The industrial utilization of RM has a positive impact on lowcarbon and sustainable Bauxite residue (Red mud) is produced in alumina plants by the Bayer process in which Alcontaining minerals are dissolved in hot NaOH The global residue inventory reached an estimated 35 billion tons in 2014, increasing by approximately 120 million tons per annum The appropriate management of bauxite residue is becoming a global environmental concern A review of the characterization and revegetation of bauxite residues 2019年2月1日 Red mud consists of valuable materials such as rare earth elements, titanium, iron and aluminium The recovery of rare earths and other valuable metals from red mud have been analysed and reviewed in couple of studies (Binnemans et al, 2015; Borra et al, 2016a)These elements in the red mud have been attracting the interest of the research The composition, recycling and utilisation of Bayer red mud2022年3月10日 Nowadays, the comprehensive utilization of red mud is still a difficult problem Using starch as the reducing agent, the "highpressure hydrothermal reduction method" is used to separate and recover sodium, aluminum, and iron in highiron red mud in one step in an alkaline hydrothermal system This article focuses on the hydrothermal reduction behavior of the iron Transformation Behavior of Iron Minerals in HighIron Red Mud
Decanter centrifuge for tailings treatment Alfa Laval
Tailings treatment in the oil sands industry The Alfa Laval LYNX 1000 is specially designed and built for heavyduty solids removal in the oil and gas industry, highspeed separation and ultrafines removal The LYNX 1000 represents a new generation of decanter centrifuges, with the most advanced design features currently available, and hasutilization of highiron red mud EXPERIMENTAL Materials Calcified slag used in this experiment was obtained from highiron red mud collected from Shandong Xinfa alumina plant by process of calcification The contents of sodium oxide in highiron red mud and calcified slag were 65% and 09%, respectively After drying treatment at 150 C forA Novel Method of Extracting Iron from HighIron Red Mud and 2022年10月22日 Abstract Red mud is another worldwide problem after the bulk solid waste of steel slagThe reaction time between phases of aluminate cement clinker in the molten state is approximately 20 min, and the phase composition obtained is CA After quenching, a large area of the glass phase appeared in the SEM images of the aluminate cement clinker The Study on the Cementitious Properties of Aluminate Cement Clinker 2020年1月1日 In recent years, researchers have proposed various treatment methods to reduce the pollution from red mud Due to the chemical curing and hydraulicity of amorphous silicates [4], red mud can be A Review of Comprehensive Utilization of HighIron Red Mud
Hightemperature mechanical performance and damage behavior
2024年11月15日 Hightemperature mechanical performance and cost and complicated processing [15,16] Another alternative was to use industrial solid wastes such as fly ash, red mud and tailings as the Fig 2 showed the change of compressive strength of various molybdenum tailings contents and heat treatment temperature of fly leaching was proposed for red mud treatment [43,44], but alkaline leaching of the tailings led to the recovery of only alumina and sodium without the extraction of other valuable elementsArticle Research on High Pressure Hydrochloric Acid Leaching of Mine tailings (MTs) are the materials dumped on a mining site after mineral extraction, containing scattered traces of residual minerals, dugup soils, and a disturbed ecosystem Abandoned and untreated MT can pose threats to the surrounding ecosystem due to the presence of various primary and secondary toxic components, such as organic substances [PAH (polycyclic Bioremediation techniques for the treatment of mine tailings: A 2021年12月1日 As shown in Table 1, the chemical analysis of highiron red mud and highmanganese iron ore indicates that the iron content of red mud is ω (TFe) = 4911%, much higher than the average iron grade of ω (TFe) = 3260% in China's iron reverse The content of Al 2 O 3 and SiO 2 is 836% and 463%, respectively TheEfficient improvement for the direct reduction of highiron red mud
Lowcarbon treatment of zinc contaminated iron tailings using high
2022年3月1日 Largescale iron ore processing produces high volumes of iron tailings, and they are regarded as solid wastes Global iron tailings production was ∼1 billion tons in 2019, and it was reported that, on average, the production of 1 ton of iron ore would generate 2 tons of iron tailings in Western Australia (Zhang et al, 2021)In China alone, around 26 billion tons of iron Tailings are different from overburden, resulting in the generation of approximately 170 million tonnes (370 billion pounds) of red mud [7] Due to this high level of production and the material's high alkalinity, leading to the Tailings Wikipedia2020年5月19日 Among environmental hot spots all over the world are the tailings of RM, generated during the digestion of bauxite ore with sodium hydroxide by Bayer process for the extraction of alumina The term ‘red mud’ is used as a synonym for ‘bauxite residue’ The residue generated is usually highly alkaline with pH about 105–13 [1, 2]Properties and Assessment of Applications of Red Mud (Bauxite 2022年8月27日 Mining is an important industry, accounting for 69% of global GDP However, global development promotes accelerated demand, resulting in the accumulation of hazardous waste in land, sea, and air environments It reached 7 billion tonnes of mine tailings generated yearly worldwide, and 19 billion solid tailings will be accumulated by 2025 Adding to this, the Recycling and Reuse of Mine Tailings: A Review of Advancements
A review of the engineered treatment of red mud: Construction
To decrease environmental pollution and improve resource utilization, the comprehensive utilization of red mud has received widespread attention, mainly including the production of construction materials [[7], [8], [9]] the recovery of valuable components [4, 10], and the application in environmental remediation [6]The strong alkalinity of red mud significantly 2018年9月25日 Because of the high content of fine mud in the unclassified tailings, the permeability coefficient is small, which is not conducive to the settling of Harbottle D, Liu Q, Xu Z Current state of fine mineral tailings treatment: A critical review on theory and practice Minerals Engineering 2014; 58, 113–131 View An experimental study on the flocculating settling of unclassified tailings2021年1月30日 This research focuses on the process of hydrochloric highpressure acid leaching using 10–20% HCl of two samples of nonmagnetic tailings obtained by 60minute carbothermic roasting of red mud Research on HighPressure Hydrochloric Acid Leaching of 2024年2月3日 In order to realize theHighiron red mud largescale resourcefulness and harmless utilization of highironIron red mudRed mud, the harmless treatment of red mud discharged from the alumina production process has been a worldwide challenge [2,3,4,5 Reduced tailings can be used for further aluminum, titanium, and Pilot Study on the Recovery of Iron from HighIron Red Mud
Current state of fine mineral tailings treatment: A critical review
north of Fort McMurray, tailings slurry impoundment has created substantial land disturbances, covering an area of at least 130 km2 in 2011 (Masliyah and Czarnecki, 2011) To produce one barrel of crude bitumen, 33 m3 of tailings is discharged, containing 15 m3 of fluid fine tailings (FFT) or mature fine tailings (MFT) that