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
Bauxite desulfurization equipment
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Research progress on desulfurization technology of highsulfur
2022年10月1日 Excessive sulfur impurities in bauxite have significant impact on the Bayer process, such as corrosion of equipment and pipelines, increased consumption of alkali, and 2023年8月1日 Nanoparticles collectors (NPC) was synthesized and applied in flotation desulfurization of fine highsulfur bauxite NPC has a shorter flowsheet and better performance Synthesis and characterization of a novel collector for the 2024年6月11日 Roasting is an effective and rapid method for achieving the desulfurization of highsulfur bauxite to meet the requirements of digestion in the Bayer process Most current Lowtemperature Roasting Desulfurization of Highsulfur Bauxite Excessive sulfur impurities in bauxite have significant impact on the Bayer process, such as corrosion of equipment and pipelines, increased consumption of alkali, and difficulties in Research progress on desulfurization technology of highsulfur
Characterization of High Sulfur Bauxite and Its Phase
2023年9月7日 The roasting desulfurization method is an efficient and short process technology for treating high sulfur bauxite [10, 11], and high desulfurization efficiency can be obtained 2017年3月10日 Excessive sulfur impurities in bauxite have significant impact on the Bayer process, such as corrosion of equipment and pipelines, increased consumption of alkali, and Review on Desulfurization of Highsulfur Bauxite ResearchGate预处理脱硫 (焙烧、电化学、生物和浮选等)和拜耳法脱硫 (氧化和沉淀)是目前铝土矿脱硫的主要技术,分析这些技术各自的机理和优缺点,以进一步提高高硫铝土矿的脱硫性能。Research progress on desulfurization technology of highsulfur 2022年8月12日 The manuscript presents a sound and robust kinetic model of desulfurization of highsulfur bauxite in a conveyor bed However, the manuscript requires more detail in some HighEfficiency Desulfurization of HighSulfur Bauxite Calcined in a
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Geologic characteristics and potential of bauxite in
2019年12月1日 As the mainstreams of bauxite desulfurization technologies, the bauxite predesulfurization (roasting, electrochemistry, biology, flotation, etc) and Bayer process desulfurization (oxidation and the corrosion of equipment, increasing NaOH consumption, deteriorating the equality of Al 2O 3, and lowering the coefficient of heat transfer during the distillation desulfurization ratio of bauxite electrolysis On the other hand, Ca2+ in electrolyte lowered electrode activity due to the formation of relevant solid matter covering onRoles of Electrolyte Characterization on Bauxite Electrolysis 2021年2月20日 For example, it causes co rrosion of steel equipment [3,4], an increase in alkali desulfurization of highsulfur bauxite, but there h as been no relevant research reportedEffective Desulfurization and Alumina Digestion of highsulfur bauxite was fit for alumina production process using Bayer’s process after desulfurization[3] And the application of highsulfur bauxite will relieve the pressure of increased costs of highgrade bauxite But there are still many problems in the application of highsulfur bauxite, such as the corrosion of equipment,Desulfurization from Bauxite Water Slurry (BWS) Electrolysis
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A novel collector for highsulfur bauxite flotation desulfurization
2022年7月25日 Effective desulfurization of highsulfur bauxite is one of the major problems in the alumina production industry To overcome this, a novel nanoparticle collector (NC) to improve the bauxite predesulfurization (roasting, electrochemistry, biology, flotation, etc) and Bayer process desulfurization (oxidation and precipitation) need to be fully understood for the further improvement of desulfurization performance Here, an indepth review on their mechanisms and advantages/disadvantages is presented Key words: bauxite Research progress on desulfurization technology of highsulfur bauxite2019年8月25日 HAN Yuexin, LIU Xiao, HE Fayu, GAO Peng, MA Shaojian Current Situation of Bauxite Resource and Its Beneficiation Technology in China[J] Conservation and Utilization of Mineral Resources, 2019, 39(4): 151158 doi: 1013779/kiissn10010076201904020Current Situation of Bauxite Resource and Its Beneficiation 2021年2月8日 The results showed that the sulfur in highsulfur bauxite can be efficiently removed by roasting in the conveying bed at 520–720 °C for 2 s Major reactions of highsulfur bauxite during roasting were the dehydration of minerals, desulfurization of pyrite, sulfation of SO2, and decomposition of sulfateEffective Desulfurization and Alumina Digestion of HighSulfur Bauxite
Lowtemperature Roasting Desulfurization of Highsulfur Bauxite
Low‑temperature Roasting Desulfurization of High‑sulfur Bauxite and Study on Desulfurization Kinetic Mingzhuang Xie1,2 Xin Zhang1,2 Zegang Wu1,2 Fengqin Liu1,2 Chengming Xie1,2 Hongliang Zhao1,2 Received equipment corrosion, the low recovery rate of alumina, the challenge of utilizing the sulfur concentrate, and the preson the desulfurization rate and digestion performance of highsulfur bauxite in the process of producing alumina The results demonstrated that the desulfurization efficiency of coarsegrained bauxite was significant by roasting, the sulfur content of raw ores with 380 lm size reduced to 042% from 15% The results of the SEM and a laserThe Desulfurization and Digestion Property of HighSulfur Bauxite 2017年3月10日 Download Citation Review on Desulfurization of Highsulfur Bauxite corrodes steel equipment, and pollutes the environment (Cheng, Li, Cao, Zhang, 2023; Zheng et al, 2017)Review on Desulfurization of Highsulfur Bauxite ResearchGateTable 5 Results of pH test of high sulfur bauxite flotation desulfurization pH product yield/% S/% S Recovery/% 4 tailings 1468 1584 8720 concentrate 8532 040 1280 total 100 acidic conditions, there are a series of problems such as equipment corrosion, so theExperimental Study on Flotation Desulfurization of Highsulfur Bauxite
Desulfurization from Bauxite Water Slurry (BWS) Electrolysis
2015年9月18日 Feasibility of highsulfur bauxite electrolysis desulfurization was examined using the electrochemical characterization, XRD, DTA, and FTIR The cyclic voltammetry curves indicated that bauxite water slurry (BWS) electrolysis in NaOH system was controlled by diffusion Additionally, the desulfurization effect of NaCl as the electrolyte was significantly better than 2016年10月25日 Through the reactions above, FeS 2 in bauxite was converted into soluble SO 4 2−, and very little solid Scontaining phase was produced, such as S 0 and CaSO 4, and so onHowever, the desulfurization ratio would have to be compromised if the formation of vitriol (jarosite) with other waterinsoluble species was severe in the condition of the PH value as low Roles of Electrolyte Characterization on Bauxite Electrolysis 2023年8月31日 Then, the homogenized lowsulfur bauxite was ground to 96 μm (> 82% mass fraction) with 8 wt% lime and mother liquor by ball milling Due to the requirements of flotation desulfurization, the highsulfur bauxite was ground to 74 μm (> 90% mass fraction) with water, and the solid content was controlled to 360–380 g L −1A Case Study of Producing Alumina from HighSulfur Diasporic Bauxite Processes 2022, 10, 1586 3 of 14 method was adopted for the analysis of sulfur minerals The XRD pattern of highsulfur bauxite is shown in Figure1 The average results of XRF spectroscopy HighEfficiency Desulfurization of HighSulfur Bauxite Calcined
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Summary of sulfur hazards in high‑sulfur bauxite and desulfurization
With the gradual depletion of highgrade bauxite, the development of the alumina industry has been seriously constrained High‑sulfur bauxite reserves are abundant and can be used as an effective supplement to bauxite resources Therefore, the development of desulfurization and comprehensive utiliza 2022年12月1日 Bauxite is one of the main raw materials in the alumina industry Fine highsulfur bauxite flotation desulfurization is a great challenge presentlySynthesis and characterization of a novel collector for the 2013年1月1日 Up to date, methods for sulfur removal from bauxite mainly include flotation (Wang and Zhang, 2011;Wang et al, 2010) and preroasting (Lv et al, 2009) or microwave preroasting (Zhang et al Desulfurization mechanism and application of high sulfur bauxite2024年6月11日 Roasting is an effective and rapid method for achieving the desulfurization of highsulfur bauxite to meet the requirements of digestion in the Bayer process Most current research focuses on the roasting desulfurization of highsulfur bauxite in the hightemperature region of 600–800 ℃ In this work, the thermodynamic and kinetic characteristics of Lowtemperature Roasting Desulfurization of Highsulfur Bauxite
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Characterization of High Sulfur Bauxite and Its Phase
for desulfurization research of high sulfur bauxite, and the equipment used is generally uidized bed furnace, suspension furnace, circulating uidized bed, etc [16] gas and discharges it to achieve bauxite desulfurization The roasting process can make the desulfurization complete, and the desulfurization rate is higher than otation and other2011年7月1日 A variety of methods for bauxite desulfurization have been studied, such as calcination, 3 flotation, 4 wet desulfurization, 5 and calcination desulfurization with the addition of reducing agents Sulfur phase and sulfur removal in high sulfurcontaining bauxite2009年10月1日 Download Citation Flotation process for desulfurization of high sulfur bauxite In allusion to low deposition and high sulfur content of bauxite in China, flotation process for desulfurization Flotation process for desulfurization of high sulfur bauxiteBauxite is the main raw material of the alumina industry However, highsulfur bauxite constitutes a relatively large proportion of bauxite resource in China Excessive sulfur impurities in bauxite have significant impact on the Bayer process, such as corrosion of equipment and pipelines, increased consumption of alkali, and difficulties in sedimentation of red mud particles after Research progress on desulfurization technology of highsulfur bauxite
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Effects of electrolyte recycling on desulfurization from bauxite
2016年6月1日 Key words: high sulfur bauxite; electrolysis; desulfurization; electrolyte; recycling 1 Introduction During alumina production process, Scontaining phase is transformed into sulfates (Na2SO4) [1], resulting in many problems, such as the decline of dissolution rate of Al2O3, the corrosion of equipment, the reduction of alumina production yield and quality [2]2021年2月5日 Generally, 1–2 tons of bauxite residue generated while producing 1 ton of alumina mainly depending on the bauxite quality and production process (Zhao et al, 2009; Jones et al, 2012; Deihimi et al, 2018; Borra et al, 2015)According to the statistics of the International Aluminium Institute (Aluminium, 2019), Fig 1 illustrated the world alumina production since the Dealkalization processes of bauxite residue: A comprehensive reviewvalue2 Therefore, accelerating the desulfurization studies of highsulfur bauxite is helpful in alleviating the bauxite supply crisis of the aluminum industry in China Padilla et al reported that highsulfur bauxite generally refers to the usual bauxite with a sulfur concentration of more than 07%3 The main sulfur minerals in bauxite are Desulfurization by Adding Sodium Nitrate in the Production of 2024年7月9日 Excessive sulfur content in bauxite and complex valence changes in the Bayer process have serious impacts on products and equipment This paper will introduce pretreatment desulfurization and posttreatment desulfurization methods such as roasting, flotation, electrochemical and biological methodsSummary of sulfur hazards in high‑sulfur bauxite and desulfurization
Roasting PreTreatment of HighSulfur Bauxite for Sulfide
2018年10月25日 Abstract Alumina refineries in China continue to face challenges in achieving clean and efficient utilization of highsulfur bauxite Disulfide ions, $${\\text{S}}{2}^{{2 }},$$ in FeS2 can be considered as active components in the Bayer process for alumina production, but they lead to corrosion of the equipment used in the processing of bauxite Our research 2023年3月10日 It can be seen from Table I that the total sulfur (S Total) and the A/S of the bauxite are 175% and 703, respectivelyTherefore, the mineral sample belongs to highgrade highsulfur bauxite It can be seen from Fig 1 that the mineral mainly contains primary diaspore (AlOOH), and that the sulfur minerals are pyrite (FeS 2)Furthermore, it contains small Desulfurization by Adding Sodium Nitrate in the Production of 2018年2月2日 With fast development of alumina industry, and dramatic increasing of bauxite consumption, highsulfur bauxite has become a potential exploitable resource [1, 2]In the Bayer process, the presence of sulfide can result in alkali loss, equipment corrosion, impurities dissolution and blocking pipes [1, 3]Therefore, desulfurization of high sulfur bauxite has a high Research on the Desulfurization of High Sulfur Bauxite2024年3月28日 Shandong Xinhai Mining Technology Equipment Inc The above is an introduction to the 6 beneficiation methods for highsulfur bauxite desulfurization6 Major Desulfurization Processes for HighSulfur Bauxite
HighEfficiency Desulfurization of HighSulfur
2022年8月12日 Highsulfur bauxite desulfurization follows a threedimensional spherical diffusion mechanism, with an activation energy of 18116 kJ/mol, controlled by the diffusion rate of O2 or SO2 through the 2024年7月1日 Desulfurization of high sulfur bauxite is an important issue in Bayer alumina production In this study, by using two anionic sulphydryl collectors (HX, HD) as mixed collectors (PYDH), the Summary of sulfur hazards in high‑sulfur bauxite and desulfurization 2023年8月1日 The sulfur in bauxite, however, affects the quality of the product, increases the consumption of alkali, corrodes steel equipment, and pollutes the environment (Cheng, Li, Cao, Zhang, 2023; Zheng et al, 2017)The most common sulfurcontaining minerals in highsulfur bauxite are pyrite (FeS 2) and its isomers (marcasite and melnikovite), as well as sulfates Synthesis and characterization of a novel collector for the 2020年4月1日 In this paper, digestion behavior and removal of sulfur in highsulfur bauxite during Bayer process were studied The thermodynamic analysis shows that pyrite reacts with alkali solution to Digestion behavior and removal of sulfur in highsulfur bauxite
Effect and mechanism on the flotation desulfurization of high
an economically effective technology for desulfurization of high sulfur bauxite (Zhu et al, 2023) Sulfur in high sulfur bauxite usually exists in the form of pyrite Xanthate is the most commonly used pyrite collector in reverse flotation desulfurization of high sulfur bauxite (Yang et al, 2018; Xie et al, 2017)2020年5月1日 Sulfides in the highsulfur bauxite lead to serious steel equipment corrosion and alumina The paper offers a possible alternative method for desulfurization of bauxite that may improve overall Suspension calcination and alkali leaching of lowgrade high 2020年5月12日 To enable the utilization of lowgrade and highsulfur bauxite, the suspension calcination was used to remove the sulfur and the activate silica minerals, and the calcinated bauxite was subjected to a desilication process in NaOH solution under atmospheric pressure The desulfurization and desilication properties and mineralogical evolution were studied by X Suspension calcination and alkali leaching of lowgrade high Described the distribution of high grade bauxite containing sulfur in our country and its effect on production equipment and product quality,discussed some methods to eliminate the sulfur Flotation of Chinese high sulfur bauxites for the purposes of desulfurization is more difficult than conventional sulfide flotation in that the Development and application of bauxite containing high sulfur