Section snippets Materials and methods. In this study, H 2 O 2, KHSO 5, Fe 4 [Fe(CN) 6] 3 and O 3 were used as oxidants to remove sulfur from coal. Moreover, the desulfurization performance of integrated flotation/oxidation was evidenced via XPS (X-ray photoelectron spectrometer) [35], SEM (Scanning electron microscopy) [36], MD …Web
ادامه مطلب
Prediction of Sulfur Removal from Iron Concentrate Using Column Flotation Froth Features: Comparison of k-Means Clustering, Regression, Backpropagation Neural …Web
ادامه مطلب
The flotation desulfurization experiments were carried out on 8 composite samples collected from the final tailings of Sarcheshmeh concentrator plant. Samples were collected during 2 months based on the weekly composite sampling plan. ... Considerations for Beneficiation of Low Grade Iron Ore for Steel Making in Kenya. Proceedings of the ...Web
ادامه مطلب
Basics of Iron Ore Desulfurization Using Flotation and attracts attentions for the simultaneous removal of sulfur and gangue minerals, and hence various reagents and a Flotation can be simultaneously used to remove oxide and combination of these reagents are still being developed for sulfidic gangue minerals from the iron ores. ...Web
ادامه مطلب
Keywords: High voltage electrical pulses, Grindability, Coarse particle flotation, Desulfurization, Iron ore. 1. Introduction Iron is one of the most common elements in the earth's crust, which nowadays is considered for processing due to the grade decreasing of iron ores and the increase of associated impurities such as sulfur [1]. TheWeb
ادامه مطلب
The effect of high voltage electrical pulses on iron ore comminution to improve desulfurization flotation recovery . × Close Log In. Log in with Facebook Log in with Google. or. Email. Password. Remember me on this computer. or reset password. Enter the email address you signed up with and we'll email you a reset link. ...Web
ادامه مطلب
The results in optimal conditions indicated that column flotation was considerably efficient for iron ore desulfurization so that a high purity concentrate with …Web
ادامه مطلب
for the flotation process used to desulfurize iron concentrate. Keywords: column flotation; sulfur removal; iron ore; prediction; multiple linear regression; neural network; k-means clustering; convolutional neural network 1. Introduction Flotation is a significant industrial technology for separating valuable minerals from tailings.Web
ادامه مطلب
The reverse flotation of pyrite particles was used for desulfurization of the iron ore for two reasons. Firstly, the amount of pyrite is significantly less when …Web
ادامه مطلب
The achievement of higher sulfur removal rates has been an important goal since the development of sulfur removal techniques. In this research, an effort is made to separately introduce the various processes, industrial practices, and fundamental research activities to remove sulfur from iron ores, concentrates, or roasted iron ores.Web
ادامه مطلب
The common iron ore desulphurization method is flotation. However, the dependence of flotation efficiency on the particle size responsible for its need for grinding to a certain particle size, as well as no transformation of sulphide minerals to useful by-products in the flotation process, has led researchers to make efforts to replacing the ...Web
ادامه مطلب
In this way, the optimized condition and latest innovations in sulfur removal using flotation are reviewed and the development of leaching and bioleaching techniques for sulfur …Web
ادامه مطلب
Desulfurization of fine iron concentrates by column flotation process in the presence of nano-micro bubbles Iran 103187 Low-grade Magnesite Processing with High Silica and Iron ContentsWeb
ادامه مطلب
This study presents an experimental program performed to investigate the effects of flotation variables including gas flow rate, froth depth, slurry solids percent, frother/collector dosage, and pH on the froth features such as bubble size, froth velocity, froth color and froth stability during desulfurization of an iron ore.Web
ادامه مطلب
ore, iron sand and lateritic iron ore, which co nsist of 47,144 %, 47,08 % and 30,26 % iron content [18]. Iron reduction is known as the process for th e transformation of iron oxide to iro nWeb
ادامه مطلب
Using reverse flotation as a desulfurization method can decrease the S content in Fe ores from 3.6 to 0.17% ... In the present study, depressants not widely used in iron ore flotation were tested ...Web
ادامه مطلب
The sulfur content was then reduced from 0.99% to 0.05% in the final concentrate of reverse flotation as a desulfurization step. ... desulfurization performance of high-sulfurous iron ore. ...Web
ادامه مطلب
The Desulfurization of Magnetite Ore by Flotation with a Mixture of Xanthate and Dixanthogen. Jun-xia Yu Yingyong Ge Xinwei Cai. ... DESULFURIZATION OF IRON ORE CONCENTRATE USING A COMBINATION OF MAGNETIC SEPARATION AND REVERSE FLOTATION. ... Owing to the negative effects of sulphur in iron ore on …Web
ادامه مطلب
In this work, the feasibility study of desulfurization process for iron ore used in the pelletizing plant was carried out in the fourth line of the Gol-e-Gohar Complex.Web
ادامه مطلب
iron ores with a high content of impurities, such as sulfur, have been processed [2]. Pyrrhotite (Fe1 xS) is a kind of common sulfide which exists in magnetite ore as an associated mineral with little industrial value. The contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore smelting process.Web
ادامه مطلب
Among the iron bearing minerals, pyrite decreased from 35.93 to 3.21%, and hematite increased from 31.95 to 80.75%. ... the flotation desulfurization technology for handling high sulfur bauxite is relatively mature, ... The ore sample that cannot pass the 20 mesh sieve is returned to the grinding prototype for further grinding and the above ...Web
ادامه مطلب
The titanium in the ore is mainly ilmenite, followed by rutile, white titanium, brookite, and sphene. 4.91% of titanium is dispersed in iron-manganese minerals (goethite, pyrite, hydrohematite ...Web
ادامه مطلب
The ore-grinding method can promote the separation of minerals and the coal matrix and is widely used to improve the flotation desulfurization efficiency. The coal samples were dried at 70 °C and crushed by a multifunctional crusher. Then, the coal particles were sieved according to the Chinese National Standards (GB/T 477-2008).Web
ادامه مطلب
The results in optimal conditions indicated that column flotation was considerably efficient for iron ore desulfurization so that a high purity concentrate with the sulfur content of 0.08 % and ...Web
ادامه مطلب
predicting the amount of sulfur removal from iron ore concentrate in the column flotation process. In th is study, 74 of 99 (75%) items in the dataset were used in training and theWeb
ادامه مطلب
3.1 Coal pyrite depressants. Although the contact angle is smaller and the induction time of coal pyrite is longer than those of coal (Qi et al. 2019), coal pyrite has better floatability than ore pyrite due to the doping of C atoms.Efficient depressants are needed to inhibit the floatability of pyrite in the flotation separation of coal and pyrite.Web
ادامه مطلب
The contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore processing. This study utilized froth flotation to float pyrrhotite away from magnetite using collectors of xanthate and dixanthogen. It was found that xanthate or dixanthogen alone could not achieve selective separation between …Web
ادامه مطلب
Abstract. Effective desulfurization of high-sulfur bauxite is one of the major problems in the alumina production industry. To overcome this, a novel nanoparticle collector (NC) to improve the ...Web
ادامه مطلب
In this way, the optimized condition and latest innovations in sulfur removal using flotation are reviewed and the development of leaching and bioleaching techniques for sulfur reduction is introduced; following the development of thermal decomposition, …Web
ادامه مطلب
The effect of flotation for desulfurizing the iron pelletizing feed has been investigated. The flotation method can reduce the emission of harmful environmental …Web
ادامه مطلب
Figure 2 shows the flotation circuit of industrial experiment in Baotou iron mine. The The rougher and cleaner of the industrial experiment syst em are composed of 6 and 4 units of 40 m 3Web
ادامه مطلب
Insights into the design of polymetallic ore flotation circuits, including tailing desulfurization ... This paper investigates the circuit design of polymetallic ores, including desulfurization within the flotation process. ... Drill core texture as geometallurgical indicator for the Mont-Wright iron ore deposit (Quebec, Canada) Minerals ...Web
ادامه مطلب
This study presents an experimental program performed to study the effects of flotation column variables including gas flow rate, froth depth, slurry solids percent, …Web
ادامه مطلب
A typical of the high sulfur iron ore from Inner Mongolia, China, iron grade of 53.06% and sulfur content is 2.76%, the main metal mineral in the ore is magnetite, followed by magnetic pyrite ...Web
ادامه مطلب
This paper proposes a novel approach to sulfur removal by adding iron during the digestion process. Iron can react with high-valence sulfur (S 2 O 3 2−, SO 3 2−, SO 4 2−) to generate S 2− at digestion temperature, and then S 2− enter red mud in the form of Na 3 FeS 3 to be removed. As iron dosage increases, high-valence sulfur concentration …Web
ادامه مطلب
This study investigates the flotation kinetics of individual platinum-group elements (PGEs) and gold, namely Pt, Pd, and 2E+Au (i.e., Pt+Pd+Au), in the context of Platreef ore flotation. Experimental tests were conducted on a Platreef ore feed using various dosages of depressants, frothers, and collectors under controlled agitation and …Web
ادامه مطلب
This paper reviews the industrial practices and fundamental research surrounding iron ore flotation. The advantages and disadvantages of direct flotation, …Web
ادامه مطلب
Grinding process and fineness have been found as significant factors influencing the flotation desulfurization performance of high-sulfurous iron ore. Moreover, the separation tests of multi-stage grinding as well as direct one-stage fine grinding were conducted. ... Beneficiation tests Two kinds of experimental schemes for the …Web
ادامه مطلب
The reverse flotation of Itabirite iron ore is typically performed after a desliming step in which most of the sub-10 µm particles are removed. This is done to limit processing problems such as poor flotation recovery of SiO 2 due to slime coatings, increased slurry viscosities, unmanageable froths and increased losses of hematite …Web
ادامه مطلب
@article{osti_7260527, title = {Desulfurization of coal by microbial column flotation}, author = {Ohmura, Naoya and Saiki, Hiroshi}, abstractNote = {Twenty-three strains capable of oxidizing iron were isolated from coal and ore storage sites as well as coal and ore mines, volcanic areas, and hot spring. Four strains were found to have high …Web
ادامه مطلب