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Separation of silica from bauxite via froth flotation
2009年3月1日· This paper reports an innovative development: concentrating gibbsite via reverse froth flotation in order to obtain a metallurgicalgrade bauxite concentrate Tailings from an industrial plant have undergone attrition scrubbing and desliming; the quartz2021年1月15日· The objective of this study is to characterize lowgrade Seydişehir bauxite ore using chemical and mineralogical techniques, and to investigate its flotationCharacterization and flotation of lowgrade boehmitic
Flotation enhancement of lowgrade bauxite using oxalic
2022年3月1日· Flotation enhancement of lowgrade bauxite using oxalic acid as surface pretreatment agent Oxalic acid was first introduced to pretreat the diasporic bauxite2017年12月1日· Flocculation was identified as a capable method that can solve the problem of desilication for China’s bauxite besides flotation (a simultaneous use ofA review of pretreatment of diasporic bauxite ores by
Treatment of backwater in bauxite flotation plant and
2019年4月1日· The bauxite flotation plants in China, most of which were built and put into production after 2009, retained good flotation indexes by discharging the backwater out2019年2月16日· Bauxite is the major alumina (Al 2 O 3 ) bearing ore used in the aluminum manufacturing industries The bauxite containing less than 50% Al 2 O 3 is called lowAdvances in Beneficiation of LowGrade Bauxite
Enhanced Bauxite Recovery Using a Flotation Column
2020年6月30日· An innovative selfdesigned medium was packed in a benchscale flotation column to study its influence on the flotation recovery of bauxite2020年9月2日· In this investigation, the finegrained bauxite ore flotation was conducted in a platepacked flotation column This paper evaluated the effects of packingplates on recovering fine bauxite particles andFine Bauxite Recovery Using a PlatePacked Flotation
Experimental Investigation on Desiliconization of LowGrade
2018年1月1日· The reverse flotation of quartz and other gangue silicate minerals with alkyl amines is an important and well known strategy for the processing of iron ore, low grade2018年4月1日· Diasporic bauxite represents one of the major aluminum resources Its upgrading for further processing involves a separation of diaspore (the valuable mineral)A review of the surface features and properties, surfactant
Comprehensive Application Technology of Bauxite Residue
2022年3月1日· Bauxite residue is the industrial solid waste discharged from the production of alumina by bauxite, which contains a certain amount of ferric oxide in a reddishbrown color, so it is also called “red mud”, and is a typical nonferrous metallurgical solid waste (Wang et al 2018; Xue et al 2022)The varieties of bauxite residue depend on the2020年12月20日· Abstract and Figures Alunite is the main nonbauxite source of aluminum Due to the low Degrees Of Freedom (DOF) of alunite, froth flotation, as a preconcentration method, is a viable(PDF) New Insights into the PreConcentration of Alunite from a
Flotation enhancement of lowgrade bauxite using oxalic acid
2022年3月1日· Surface pretreatment of lowgrade bauxite using oxalic acid was carried out prior to the flotation experiments 500 g of bauxite samples with a 60% pulp density was firstly ground to 85% < 0075 mm After the slurry was transferred to a beaker, a certain amount of oxalic acid solution was added to keep its concentration of 001, 005, 05 mol/L2022年10月1日· Results showed that when roasting at 650 °C for 120 s, the desulfurization efficiency was up to 7698%, while the residual sulfur in the roasted ore was found to be 007% HU et al [24] roasted highsulfur bauxite ore at 600 °C for 60 min, and the dissolution test was performed at 240 °C and roasted for 60 minResearch progress on desulfurization technology of highsulfur bauxite
Leaching Behavior of LithiumRich Beneficiation Tailings in Caustic
2022年1月7日· This paper systematically investigated the leaching behavior of bauxite lithiumrich beneficiation tailings in caustic solution, together with their phase and morphological changes The main chemical compositions (mass percent) of bauxite flotation tailings were 4056% Al2O3, 3400% SiO2, 434% K2O, 331% TiO2, 183%2020年6月24日· The sulfur in highsulfur bauxite not only pollutes the environment but also harms alumina production This study investigated the removal of sulfur from highsulfur bauxite by adding Zn or ZnO during the Bayer process The results showed that the different valence sulfur (S2−, S2O32−, SO32−, and SO42−) in sodium aluminate solutionSulfur Removal of HighSulfur Bauxite | SpringerLink
Fine Bauxite Recovery Using a PlatePacked Flotation Column
2020年9月2日· In this investigation, the finegrained bauxite ore flotation was conducted in a platepacked flotation column This paper evaluated the effects of packingplates on recovering fine bauxite particles and revealed the fundamental mechanisms Bubble coalescence and breakup behaviors in the packed and unpacked flotation columns2010年3月1日· Based on the characteristics of China's bauxite and cyclone separation, the cyclonereverse flotation technique was experimentally carried out for the separation of lowgrade bauxite, of which theApplication of airsparged hydrocyclone in reverse flotation of bauxite
A novel collector for highsulfur bauxite flotation desulfurization
ABSTRACT 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 desulfurization performance during flotation process was synthesized via emulsion polymerization method, whereby lignin (natural polymer) was used as the host2016年1月1日· Both direct flotation [6,7] and reverse flotation processes [3,8,9] have been developed for bauxite flotation In recent years, the research on the flotation of low grade bauxite has becomeInvestigation and optimization of use of anionic collectors in direct
Effect of modified starches on depression of diaspore
2010年8月1日· HU Yuehua, LI Haipu, JIANG Yuren Effect of hydroxamic acid starch on reverse flotation desilicate from diasporic bauxite [J] Transactions of Nonferrous Metals Society of China, 2002, 12(5): 974−978 [11] LI Haipu, HU Yuehua, WANG Dianzuo, XU Jing Effect of hydroxamic acid polymers on reversed flotation of bauxite [J]2008年6月1日· HU Yuehua, WANG Yuhua, WANG Dianzuo Flotation chemistry and desilication of bauxite [M] Beijing: Science Press, 2004 (in Chinese) Google Scholar JIANG Hao Studies on solution chemistry of interactions between cationic collectors and aliminosilicate aluminum minerals in bauxite flotation desilica [D]Flotation of kaolinite and diaspore with hexadecyl dimethyl benzyl
Characterization and flotation of lowgrade boehmitic bauxite
2021年1月15日· Bauxite is the main raw material in primary aluminum production and its reactive silica content and mass ratio of Al 2 O 3 to SiO 2 (A/S) has a critical role in the economic viability of Bayer process As a major source of the reactive silica, clay impurities should be removed from the ore as much as possible by a beneficiation method such as2022年2月10日· During bauxite flotation, flotation indexes decrease with increasing water circulation time, resulting in the discharge of bauxite flotation wastewater as well as a waste of resources and great environmental safety risks To determine how to return the wastewater back to the flotation process, this study aimed to identify the mainTreatment technique for wastewater from bauxite flotation
Bauxite Beneficiation and Processing | Dry Separation Technology
No water or chemicals required In summary, dry processing with the STET separator offers opportunities to generate value for bauxite producers and refiners The preprocessing of bauxite prior to refining will reduce chemical costs, lower the volume of red mud generated and minimize process upsets Raju, K S 20092014年4月25日· Selective flocculation is a new method to solve the problem of China’s bauxite desilication besides flotation and reverse flotation The method of selective flocculation of bauxite using hydrolyzed polyacrylamide as flocculant was experimented and evaluated The results of diaspore and kaolinite single mineral settling tests show that theSeparation of diaspore from bauxite by selective Springer
Flotation enhancement of lowgrade bauxite using oxalic acid
2022年3月1日· A series of flotation experiments were conducted to investigate the effects of oxalic acid pretreatment The flotation results of nontreated and pretreated bauxite are shown in Fig 2 For the untreated bauxite, the flotation recovery of Al 2 O 3 and SiO 2 in the concentrate wasThe flotation properties of single minerals such as diaspore, kaolinite and pyrophllite in bauxites were investigated using RL as collector The effects of regulators and unavoidable ions on flotation were studied Based on the results of single minerals flotation, the separation experiments of mixed minerals and bauxite ore were carried out The resultsA novel collector RL for flotation of bauxite | SpringerLink
The role of cationic polyacrylamide in the reverse flotation of
2007年11月1日· Direct flotation has been shown to be an efficient method for the desilicating of diasporic bauxite (Feng et al, 1998, Liu, 1999, Lu et al, 2002) However, reverse flotation has been more advantageous for diasporic bauxite desilicating than direct flotation, having lower cost, ease of dewatering and less effect on metallurgy ( Cao et2018年4月1日· Although oleic acid is the most traditional collector used for direct flotation of bauxite, the available literature on the flotation of pure minerals in diasporic bauxite is very limited Wang et al [ 86 ] found that the floatability of the minerals is in the order of diaspore ≫ pyrophyllite > kaolinite when using SHMP as dispersant and depressant andA review of the surface features and properties, surfactant