Reverse flotation located at the end of the primary treatment circuit high and low intensity magnetic separation will lower a large amount of the sulphur from magnetic separator concentrate The effects of various operating parameters such as concentrations of collector frother depressant and activator pH solid in pulp concentration have
This paper proposes a flotation performance recognition system based on a hierarchical classification of froth images using both local dynamic and static features which includes a series of functions in image extraction processing and classification Within the integrated system to identify the abnormal working condition with poor flotation performance
Pilot scale flotation tests were performed to evaluate the industrial separation feasibility of residue with ultrasonic pretreatment under continuous feed conditions The flotation process is shown in Fig 10 and the results are summarized in Table 7 Separation with ultrasonic pretreatment produced a sulfur concentrate assaying of % S
between column flotation performance sulfur recovery and the froth features under dif five minutes the pulp was entered into the cell at a flow rate of 2 l/min and a defined
There is % cobalt and % sulfur in the cobalt bearing V Ti tailings in the Panxi Region with the metal sulfide minerals mainly including FeS2 Fe1−xS Co3S4 and Fe Co S2 and the
The sulfur in the leaching residue can be upgraded to 90% in grade by froth flotation and the sulfur concentration can be followed by sulfur purification and selenium and tellurium removal The
Sulfur removal from mineral concentrates is urgently needed given the increasingly stringent environmental regulations and low−sulfur feedstocks required by smelters However current desulfurization technologies suffer from considerably drawbacks such as high costs and harmful byproducts In this study we investigated the potential use and feasibility of
With fast development of alumina industry and dramatic increasing of bauxite consumption high sulfur 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
Sulfur flotation process is a typical industry process with complex dynamics For a sulfur flotation cell the structure of the system model could be derived using first principles and reaction
A simplified flow diagram of an alumina refinery in Zunyi is shown in Fig 1 The mixed slurry passed through a pre desilication step with a residence temperature and time of about 90 °C and 14 h to dissolve Si bearing minerals and encourage the formation of DSP by re precipitation Flotation of the high sulfur diasporic bauxite from Zunyi
When using wind flow model and the pressing pressure is increased from MPa to MPa the moisture contents of high sulfur and low sulfur flotation clean coal decrease by % and % respectively; when the pressing pressure is increased from
multivariable flow optimizing algorithm a new module in FloatStar has been developed to calculate optimum level setpoints and/or aeration rates that will aim to optimize the residence times mass pulls and circulating loads within a flotation circuit Keywords flotation regulatory FloatStar start up disturbance residence times
and High Sulfur Bauxite by a Flotation Process Wencui Chai Guihong Han Yanfang Huang Yijun Cao and Jiongtian Liu Abstract The existence of sulfur and silica in bauxite influence the product quality of Bayer alumina The synchronous desulfurization and desilication of low grade and high sulfur bauxite through reverse flotation processes
Flotation desulfurization uses collectors to selectively adsorb sulfur containing minerals to separate them from other minerals In the high‑sulfur bauxite flotation desulfurization process Na 2 CO 3 or HCl is often used as a pH adjusting agent CuSO 4 is used as an activator terpenic oil is used as a frother The chemical properties of the
The influence of pulp pH value on flotation index was investigated and the pulp pH value test was conducted The test flow chart was shown in Figure 2 and the test results were shown in Table 5 FIG 2 Flow chart of flotation desulphurization test influenced by pH value of high sulfur bauxite
Bauxite is the major feedstock for alumina production The upgrading of low grade and high sulfur bauxite before further processing involves a separation of diaspore from aluminosilicate and sulfur minerals Reverse flotation is one of the most effective methods to realize the desulfurization and desilication of low quality bauxite [1 2]
of the flotation flow sheet using METSIM simulation software the proximate analysis value ultimate analysis value ash content and the calorific value were analyzed for the particle sizes which were 500 250 125 and 63μm taken as a secondary data from the previous work studded content sulfur content and low carbon content due to
Dry separation desulfurization uses air and pulverized coal as composite medium and air flow and mechanical vibration as the power the materials are loosed and separated according to the density of coal [15] found that the enhanced desulfurizing flotation of high sulfur coal by sonoelectrochemical method could reach the sulfur reduction
Engineering interfacial sulfur migration in transition metal sulfide enables low overpotential for durable hydrogen evolution in seawater
Irannajad 2018 This method can be categorized as direct anionic flotation of iron oxides and reverse anionic or cationic flotation of associated gangue minerals mainly quartz and sulfur Reverse cationic flotation is the most common method used for the flotation of gangue minerals mainly quartz while
The results from the flotation study on a laboratory scale at optimized conditions were a % increase in total carbon a % reduction in ash and a % reduction in sulfur
Crude flotation Extended Data supplying a sulfur gas flow through the furnace at a partial pressure of atm Care was taken in the selection of the ID of the reactor alumina support
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