Atmosphere | Free Full-Text | Removal and Resource …
The removal of high concentration flue gas sulfur dioxide (SO2) using manganese carbonate ore desulfurization (MCO-FGD) is a promising route that combines economic benefits and pollution control. However, the problems of intermediate oxidation and by-product control have plagued the industrial application of the MCO-FGD …
اقرأ أكثر
State of the art desulfurization technology arrives in …
ALMAMET installed and now operates a facility for the preparation of first class fluidized CaO, using screened converter lime fines. This fully integrated desulfurization concept …
اقرأ أكثر
Resource utilization of flue gas calcium-based desulfurization …
Chen [] made statistics on the main physical phases of CDA from steel plant sintering machines and coal-fired power plants, and the results are shown in Table 2.Among the many components, CaSO 3 contains the highest percentage, which is generated by the reaction between SO 2 and lime in the flue gas. The CaCO 3 content is …
اقرأ أكثر
(PDF) Feasibility Study of Iron Concentrate …
The iron ore sample was collected from magnetic separators concentrate stream of Gole Gohar iron ore complex with d80 equal to 90µm. Sulfur and total Fe contents of the sample were found to be 0. ...
اقرأ أكثر
The role of thermal improvements in indurating machines for …
The scarcity of iron ore concentrate resources is a real fact, and a search for alternative resources seems to be unavoidable [1, 2].For many years, magnetite iron ore mines, containing high-sulfur content (up to 2.0%), were not very welcomed in steel industry; however, they are nowadays increasingly receiving attention as potential sources and …
اقرأ أكثر
The Desulfurization of Magnetite Ore by Flotation with …
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.
اقرأ أكثر
Environmental and economic impact assessment of three …
Increasingly stringent pollutant emission standards pose a new challenge to the control of air pollutants in China's iron and steel industry (ISI). This study quantified and compared the environmental and economic effects of three typical sintering flue gas ultra-low emission treatment technologies in China's ISI, namely, semi-dry flue gas …
اقرأ أكثر
Desulfurization of Iron Ores: Processes and Challenges
As mentioned in the be done by designing a pilot-plant scale leaching to check their previous sections, there are different sulfur minerals in iron ore feasibility at the industrial level. and designing iron ore desulfurization process or selecting an appropriate method, depends on several factors such as sulfur structure, sulfur content ...
اقرأ أكثر
DESULFURIZATION OF IRON ORE CONCENTRATE USING A …
The proper feed for the pelletizing plant must have iron and the Blaine number more than 67 % and 1900 cm 2 g-1 and sulfur content less than 0.1 %, respectively.
اقرأ أكثر
Sulphur removal in ironmaking and oxygen …
There are four stages where sulphur can be removed: in the blast furnace (BF), during hot metal (HM) pretreatment, in the converter and during the …
اقرأ أكثر
Deep desulfurization of sintering flue gas in iron and steel …
It can be seen from the analysis of Figure 6 that the maximum desulfurization rate of this method is as high as 90% and the denitration rate is about 22.5% when the method is used for deep desulfurization of sintering flue gas in iron and steel plant, which has significant advantages compared with the other two methods. It can be seen that the ...
اقرأ أكثر
Study on Thermal Decomposition Process of Semidry Flue …
Advances on resource utilization of semi-dry desulfurization ash by thermal decomposition: a high-efficiency and low-temperature method for large-scale processing. The semi-dry flue gas desulfurization ash (SFGDA) is an industrial waste generated by the semi-dry desulfurization process, and its resources have been continuously attracted …
اقرأ أكثر
Minerals | Free Full-Text | The Desulfurization of Magnetite Ore …
A magnetic concentrate was obtained from Baogang plant (Neimeng, China). The principal research sample was the magnetic product of the primary iron ore containing 65.10% Fe. The results of chemical analyses of this sample are given in Table 1 and the chemical compositions of which are given in Table 2.
اقرأ أكثر
Biogas Desulphurisation: Which Technology is Best for
Biogas plant Monitoring ... the Iron Chelate desulfurization process can be followed by a dry desulfurization step which can bring hydrogen sulfide concentration down to ≤ 4 ppmv. ... Significant chemical savings (caustic, active carbon, iron ore) leading to much lower operating cost. No risk of clogging in the scrubber column;
اقرأ أكثر
HIsarna Process Simulation Model: Using FactSage with …
The titanium magnetite ore as important iron ore has been successfully used in the BF iron making process. However, the reduction of TiO 2 will make the smelting abnormal. Therefore, some blast furnace plants use a blend of titano-magnetite ore with the normal iron ore to control the TiO 2 content (less than 23 wt pct) in the slag.
اقرأ أكثر
The control of H2S in biogas using iron ores as in …
In this study, five kinds of iron ores, limonite, hematite, manganese ore, magnetite and lava rock, were used as the in situ desulfurizers in the anaerobic digestion …
اقرأ أكثر
Advances on resource utilization of semi-dry desulfurization …
It is worth noting that the implementation of desulfurization technology in coal-fired power plants and the steel industry has contributed to SO 2 emissions in ... Impurity removal and hydrothermal heterogeneous cryogenic rapid oxidation of semi-dry desulfurization ash from iron ore sintering flue gas. J Water Process Eng …
اقرأ أكثر
The effect of column flotation operational variables on desulfurization …
The iron ore sample was collected from magnetic separators concentrate stream of Gole Gohar iron ore complex with d80 equal to 90µm. Sulfur and total Fe contents of the sample were found to be 0. ...
اقرأ أكثر
Deep desulfurization treatment method and system for iron ore …
The invention discloses a method and a system for deep desulfurization treatment of iron ore concentrate, wherein the method comprises the following steps: magnetic separation treatment → pulp making treatment → oxidation treatment → aging treatment, pulp making to obtain the first ore pulp, adding oxidant into the first ore pulp to make it generate …
اقرأ أكثر
REMOVING IMPURITIES FROM IRON ORES: …
This research aims to make a preliminary study of wavellite's floatability and to evaluate the reduction of phosphorus content by froth flotation from a Brazilian iron ore …
اقرأ أكثر
(PDF) Sulphur removal in ironmaking and oxygen steelmaking …
For sulphur removal a low oxygen activity and a basic slag are required. In the BF typically 90% of the sulphur is removed; still, the HM contains about 0.03% of sulphur. Different HM ...
اقرأ أكثر
Sintering: Most Efficient Technologies for Greenhouse …
The undersize material from screening is recycled back to the process. Sinter plants recycle iron ore fines from the raw material storage and handling area, waste iron oxides, and pollution control systems. Iron ore may also be processed in on-site sinter plants. The temperature profile and the reactions zones during sintering are shown in Fig ...
اقرأ أكثر
Preparation of calcium ferrite by flue gas desulfurization …
Aiming to establish a comprehensive treatment production line of sintering FGD gypsum to achieve the goal of internal digestion and production for sustainable development in a steel plant, we designed the process flow chart with sintering FGD recycled as shown in Fig. 1.The waste FGD gypsum from sintering process, iron ore …
اقرأ أكثر
(PDF) Investigation of sulfur removal from Soork iron ore
Abstract. 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 ...
اقرأ أكثر
Novel technology of reducing SO2 emission in the iron ore …
The new desulfurization technology in the iron ore sintering process with added urea is an effective way to reduce SO2 emission. ... This study was conducted in a real-scale iron ore sinter plant ...
اقرأ أكثر
Summary of research progress on industrial flue gas desulfurization
D. Zhou et al. used semi dry desulfurization ash from iron ore sintering flue gas as a raw material to prepare calcium sulfate whiskers by removing impurities in gypsum, preparing crystals and optimizing the control [75]. H.X. Li et al. mixed the desulfurization ash produced by semi-dry desulfurization into α-hemihydrate gypsum to prepare a ...
اقرأ أكثر
The mechanism of preparation calcium ferrite from desulfurization …
The sulfur content in the mine increased from 0.011% to 0.022%, while the sulfur content of sintered ore in normal steel plants does not exceed 0.05%, leaving room for utilization. The gypsum and 1.18% iron ore powder are calcined to obtain calcium ferrite, which can replace 4.21% of the flux, resulting in 3.58 kg/t sintered desulfurization gypsum.
اقرأ أكثر
Novel technology of reducing SO2 emission in the …
The flue gas of iron ore sintering has been cleaned by desulfurization equipment, which causes high capital and operation cost. A novel technology of reducing …
اقرأ أكثر
(PDF) Desulfurization strategies in oxygen steelmaking
Configuration of the HM Desulfurization Plant at Isdemir. Basic design data. ... Because of the iron ore source used, the hot metal phosphorous content is rather high with up to 2,000 ppm. In ...
اقرأ أكثر
Desulphurization of Steel : Fundamentals & Practices
Common Steel Plant practices for desulphurization. ... Relative degree of desulfurization, (R=Ws/Wm) as affected by stirring power and time, (kSt), and the product of specific quantity of ladle slag and sulfur partition ratio, (rLS), Source: AIST ... Brazil and Australia accounts for the major production of iron ore worldwide. As of 2020 ...
اقرأ أكثر