Flotation Decarbonization and Desulfurization of a High …
The raw ore, with a sulfur content of 4.78%, a sulfide sulfur content of 4.20%, a carbon content of 3.10% and an elementary substance carbon content of 2.46% goes through the "one roughing, one cleaning, two scavenging" process after a pre-decarburization, obtaining the total desulfurization recovery of 96.20% with a …
Modeling and simulation of flotation reagents system in
In this paper, the flotation experiments of the iron oxide feed were carried out using the uniform test design method at different flotation temperatures from 20 °C …
A novel sulfur-containing ionic liquid collector for the …
As the main type of iron ore, magnetite is the main raw material in the steel industry, which has a strict demand for its sulfur content [1], [2], [3]. ... This paper investigates the circuit design of polymetallic ores, including desulfurization within the flotation process. Three types of circuit designs are analyzed: fractional flotation ...
A novel collector for high-sulfur bauxite flotation desulfurization
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 desulfurization performance during flotation process was synthesized via emulsion polymerization method, whereby lignin (natural polymer) was …
Wolframite Processing: Maximizing the Value of Tungsten Ore
Tungsten mineral phase analysis shows a WO 3 content of 1.55% in the ore. After multiple exploratory experiments, we have determined a process for the plant involving crushing, grinding, flotation, and three magnetic separation to recover tungsten concentrate along with valuable minerals like sulfur and iron concentrates. 1. Wolframite …
Summary of sulfur hazards in high‑sulfur bauxite and …
The desulfurization methods for high sulfur bauxite are divided into pre-treatment desulfurization and post-treatment desulfurization. Pre-treatment desulfurization …
Flotation Desulfurization of Acidified High-Sulfur Bauxite …
The flotation test results obviously show that sodium silicate is an effective regulator for flotation desulfurization and can not only improve inhibition of pyrite caused by acidification of ores, but also solves adverse effects on flotation, such as ore sliming, a common characteristic of oxidized ores.
(PDF) Desulfurization of hematitic concentrate of iron ore …
The present work aims to study the feasibility of sulfur removal from Soork iron ore down to lower than 0.1% using the flotation process. According to the characterization analysis, the ore ...
Study on influencing factors of Coal Microbial Flotation Desulfurization
Semantic Scholar extracted view of "Study on influencing factors of Coal Microbial Flotation Desulfurization" by Yuegang Tang et al. ... Desulfurization Mechanism of Lead–Zinc-Bearing Hematite–Limonite Ore Through Oxidation Roasting Process. Longchuan Yang Liqun Luo +4 ... Abstract The present work deals with the …
Flotation of Iron Ores: A Review
The advantages and disadvantages of direct flotation, cationic reverse flotation, and anionic reverse flotation are reviewed. A novel stepped flotation technique is discussed for the treatment of carbonate-rich iron ores.
Effects of Multi-stage Grinding Process and Grinding …
The complex disseminated relationship between pyrrhotite and magnetite as well as poor liberation of finely disseminated sulfurous pyrrhotite was revealed through the mineralogy investigation of certain high-sulfurous iron ore. Grinding process and fineness have been found as significant factors influencing the flotation desulfurization ...
Experimental Investigation on Desiliconization of Low-Grade …
The flotation tests were carried out in an RK/FD-type laboratory flotation machine (0.5 l). The ore samples were firstly pretreated by the desulfurization process in order to decrease the effect of sulfur in bauxite. The content of sulfur was decreased to 0.3% by desulfurization flotation process.
Evaluation of column flotation froth behavior by image …
This study presents an experimental program performed to investigate the effects of flotation variables including gas flow rate, froth depth, slurry solids percent, …
The effect of flotation desulfurization on the trace element …
Thirty-seven years of mining and processing of Cu-porphyry ore has been resulting in the production more than 540 million tons of waste tailings in Sarcheshmeh industrial complex, Iran's largest Cu producer. The main objective of this study is to evaluate the changes that occurred in the trace elements content of Sarcheshmeh mine tailings …
Central composite design for optimization and formulation …
Owing to the negative effects of sulphur in iron ore on steelmaking process and environment, a tank leaching process was performed in atmospheric conditions to remove the sulphur from the iron ore concentrate and simultaneously to transform sulphide minerals into useful by-products. To achieve desirable sulphur removal rate and …
Evaluation of column flotation froth behavior by image …
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.
Desulfurization mechanism of high-sulfur coal by heating reduced iron
DOI: 10.1016/j.jclepro.2022.133254 Corpus ID: 251241753; Desulfurization mechanism of high-sulfur coal by heating reduced iron powder and magnetic separation @article{Liu2022DesulfurizationMO, title={Desulfurization mechanism of high-sulfur coal by heating reduced iron powder and magnetic separation}, author={Jin Feng Liu and Jin …
The effect of column flotation operational variables on …
The aim of this study is to investigate the effect of operational variables on flotation column performance in desulphurization process from iron concentrate and …
Characterization of High Sulfur Bauxite and Its Phase
The negative impact will be caused when sulfur-containing minerals in high sulfur bauxite enter the alumina production process. Such as causing iron pollution in the ... the flotation desulfurization technology for handling high sulfur bauxite is ... the digestion rates of suspension roasting ore and static roasting ore are 94.45% and 92.08% ...
CN111437990A
the high-sulfur iron ore desulfurization process provided by the embodiment of the invention can be used for preparing low-sulfur iron ore powder with the sulfur mass fraction of less than or equal to 0.4% by using the high-sulfur iron ore with the sulfur mass fraction of more than or equal to 5%, and has the advantages of simple process and low …
Iron Ore Flotation Process: The Journey from Ore to …
Iron ore flotation process. 1. Grinding: Crushing and grinding the raw ore to a certain particle size is a necessary preparation before iron ore flotation.The purpose of grinding is to fully ...
The Desulfurization of Magnetite Ore by Flotation with a …
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 pyrrhotite and …
(PDF) RELATIONSHIP BETWEEN FROTH BEHAVIOR AND …
The desulfurization of iron ore concentrate by the column flotation process is highly nonlinear and complicated [34]. The main objective of the current study was to combine image analysis methods ...
Research progress on desulfurization technology of high
As the mainstreams of bauxite desulfurization technologies, the bauxite pre-desulfurization (roasting, electrochemistry, biology, flotation, etc) and Bayer process desulfurization (oxidation and precipitation) need to be fully understood for the further improvement of desulfurization performance.
Establishing a green biodesulfurization process for iron ore
2.2 Ore concentrate samples. Four different ore concentrate samples, two primary concentrate samples obtained after two rougher magnetic concentration stages and before the classification for grinding denominated "Iron concentrate sample A" (28.39% iron and 1.096% sulfur) and "Iron concentrate sample B" (40.70% iron and 0.950% sulfur), …
The effect of column flotation operational variables on …
that column flotation was considerably more efficient than mechanical flotation for iron ore desulfurization so that a high purity concentrate with the iron recovery of 98%, can be obtained. Author
Mapping the knowledge domain of microbial desulfurization …
Flotation desulfurization refers to the separation of sulfide from ore according to the different properties of sulfur in the flotation reagents (Lin et al. 2020). Magnetic separation desulfurization is the removal of sulfur from coal by high gradient strong magnetic separation (Zhang et al. 2018). However, the effect of physical ...
(PDF) OPTIMIZATION OF PARAMETERS IN COLUMN FLOTATION IN DESULFURIZATION …
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 ...
Establishing a green biodesulfurization process for iron ore
Alternatively, the desulfurization of iron ores through flotation leads to a notable loss of valuable minerals. Efforts to enhance efficiency through collector mixtures (Yu et al., 2016) traduce environmental concerns, such as the use of compounds like xanthate (Elizondo-Álvarez et al., 2021).
Occurrence Characteristics of Fine-Grained Pyrite in Coal and …
Flotation desulfurization is the process of separating sulfur from coal samples into tailing products based on the differences in the physical and chemical properties of the mineral surfaces without changing the original sulfur content of the entire coal. ... the ore-grinding process can break up the agglomerated pyrite, thus increasing …