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Direct Iron Ore Smelting Process for IronmakingIspatGuru

Mar 28, 2017· Direct iron ore smelting DIOS process is a smelting reduction process for the production of hot metal liquid iron. It is a twostage process which has been developed in Japan. It uses noncoking coal in a powder or granular form to smelt iron ore fines into liquid iron hot metal and hence, there is no necessity of a coke ovens plant and a

EP0427710B1Smelting reductionGoogle Patents

EP0427710B1 EP19910101431 EP91101431A EP0427710B1 EP 0427710 B1 EP0427710 B1 EP 0427710B1 EP 19910101431 EP19910101431 EP 19910101431 EP 91101431 A EP91101431 A EP 91101431A EP 0427710 B1 EP0427710 B1 EP 0427710B1 Authority EP European Patent Office Prior art keywords molten metal material iron furnace Prior art date 19861106 Legal status The legal status

Manganese Nodules Residue: Potential Raw Material for

Jan 02, 2012· The manganese nodule residue, generated in reduction roast ammonia leaching process has emerged as potential secondary raw material for production of ferrosilicomanagese. In the present paper, the smelting studies of low manganese containing leached manganese nodules residue blended with high grade Mn ore has been carried out in electric arc furnace for ferrosilicomanganese production.

/ Ferro ChromeNCM CORPCPMG

A high ratio of MgO/Al2O3 in the slag and a basic slag inhibit reduction of SiO2 to Si. Higher temperatures are needed for the reduction of SiO2. Cr2O3 and FeO are reduced in solid state and in lower temperatures, thus there is very little opportunity for SiO2 to be reduced.

Iron processingBritannica

Iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned.Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron Fe is a relatively dense metal with a silvery white appearance and distinctive magnetic properties. It constitutes 5 percent by weight of the Earths crust, and it is the

PDF A Study on Reduction of Copper Smelting Slag by

Although reduction smelting requires a large amount of energy during the smelting process, it is possible to recover Fe and Cu as a form of iron alloy with alloying elements such as Cu, Mn and Si

Smelting reduction reactions by solid carbon using

Jul 18, 2013· Smelting reduction process technology is progressing rapidly, and research to understand the reduction of FeO in molten slag and the associated foaming behaviour has gained importance. The present paper reports experimental data on the reduction of FeO in molten slag generated in a 30 kW capacity induction furnace.

Mendeley DataData for: The leachability of a ternary

Nov 05, 2019· The leachability of a ternary CaOAl2O3SiO2 slag produced from smeltingreduction of lowgrade bauxite for alumina recovery. Published in: Hydrometallurgy. Latest version. Version 1 20191105. Published: 20191105. DOI: 10.17632/f72czwv7rn.1. Cite this dataset.

SOME ASPECTS OF THE PRODUCTION OFMINTEKMINTEK

smelting of chromite ores. Using the data collected over a series of DC arc furnace campaigns, the metallurgical control of the alloy composition is discussed. In particular, the reporting of Si and C to the alloy is evaluated based on the smelting conditions and thermodynamic principles. This article attempts to evaluate the results

Kinetics and mechanism of smelting reduction of fluxed

Experimental studies on the smelting reduction of fluxed chromite pellets in FeCSi melts were carried out at 15081590°C under an initial atmosphere of argon. The reduction was found to be favoured by high temperatures, high melt C contents and a high addition of lime or silica to the pellets.

Optimization of Process Parameter for Smelting and

The details of the smelting, alloys and slag produced were given in the following section. 3.1 Smelting of chromite ore pellets having Cr/ Fe ratio 2.4 Based on the calculation made for the charge mix, smelting reduction of chromite ore pellets containing Cr/ Fe ratio 2.4 were carried out in

The Cyclone Converter Furnace Process CCF :: Total

In the CCF process prereduction and final smelting is carried out in a single reactor in combination with the application of a melting cyclone.4.5% C, 0.5% Si and small amounts of Mn, P, S and other metals. The temperature of the tapped hot metal is usually between 1400°C and 1500°C. Other main outputs from the process are slag and top gas.

Study on the effect of Si and silicide on leaching Al2O3

The effect of Si and silicide on leaching Al 2 O 3 from magnesium smelting reduction slag was studied in laboratory. The results show that total Si and partial SiO 2 would enter into leaching solution and react with NaAlOH 4 to form Na 2 O·Al 2 O 3 ·SiO 2 6 ·27H 2 O which is present in leaching residue and makes a loss of Al 2 O 3.

Kinetics and mechanism of smelting reduction of fluxed

Jul 18, 2013· Experimental studies on the smelting reduction of fluxed chromite pellets in FeCSi melts were carried out at 15081590°C under an initial atmosphere of argon. The reduction was found to be favoured by high temperatures, high melt C contents and a high addition of lime or silica to the pellets.

Optimization of Process Parameter for Smelting and

For smelting reduction of the indurated chromite ore pellets, SAF is first preheated with the nut coke for 3 to 4 hours. After heating preheating of the furnace, charge mix was properly mixed and fed in to the SAF. The charge mix prepared is shown in figure 3.2.

SMELTINGREDUCTION OF BAUXITE FOR SUSTAINABLE

microstructure has Ti and Zr elements in addition to Ca, Al, Si, Mg and O. Figure 4 indicates clearly that all the coexisting phases are very low in Fe, which confirms that the iron oxide in the bauxite has been completely removed by the smeltingreduction and a slag

Production of SilicoManganese in a Submerged Arc Furnace

Jun 09, 2018· A significant reduction of the MnO content of the slag can be achieved by increasing the proportion of MgO in the slag. This in turn improves the recovery of Mn. Production of SiMn depends on the behaviour of Mn ore, FeMn slag, quartz, and fluxes during smelting, reduction, and slag formation.

A Study on Reduction of Copper Smelting Slag by Carbon for

In carbothermal reduction smelting, the recovered ferrous alloys appeared as cast iron according to the contentranges of C and Si, which represented about 4.1% and 4.18%, respectively, in the ferrous alloys recovered from the copper slag.

Smelting separation behaviors and mechanisms of high

smelting time of 60 min, and the basicity of 0.7. The smelting separation of highalumina richmanganese ore was achieved successfully. The content of Fe, C, Si and other impurities P, S were 12.13%, 6.73%, 0.17% and 0.14, 0.008, respectively. Especially, the recovery and the content of Mn reached 80.47% and 76.76%.

Smelting reduction of MgO in molten slag by liquid

MgO in smelting reduction. In smelting reduction, the reaction rate was very fast due to reduction taking place in liquid state, so the catalysis influence of CaF 2 did not play an important role. 3.3. Effect of silicon stoichiometry The experiments of smelting reduction with different initial molar ratio of Si/2MgO were carried

Smelting reduction reactions by solid carbon using

Jul 18, 2013· Smelting reduction process technology is progressing rapidly, and research to understand the reduction of FeO in molten slag and the associated foaming behaviour has gained importance. The present paper reports experimental data on the reduction of FeO in molten slag generated in a 30 kW capacity induction furnace.

v118n2a7 Production of metallurgicalgrade silicon from

Extent of reduction % = [Si p/ Si 0] × 100 where Si0 is the initial silicon content in quartz and Sip is the produced Si metal 5.+7821,8,40.461 The data obtained and technical parameters affecting the carbothermic reduction smelting of quartz to produce MG

Study on the effect of Si and silicide on leaching Al2O3

The effect of Si and silicide on leaching Al 2 O 3 from magnesium smelting reduction slag was studied in laboratory. The results show that total Si and partial SiO 2 would enter into leaching solution and react with NaAlOH 4 to form Na 2 O·Al 2 O 3 ·SiO 2 6 ·27H 2 O which is present in leaching residue and makes a loss of Al 2 O 3.

PDF Kinetic study on solid state and smelting reduction

Reduction experiments with FeCrCSi alloys showed that in the case of synthetic FeCrC alloys, the final reducti on degree increased as the chromium conce ntration in the melt increase d.

Smelting reduction

The smelting reduction process Corex, Finex is a combination of direct reduction and smelting process to produce molten pig iron, the quality of which corresponds to blast furnace pig iron. The ore is first reduced to sponge iron in a twostage process and subsequently melted with coal and oxygen to form pig iron.

INTERACTION MECHANISM BETWEEN REFRACTORY AND

smelting reduction melts. ZrO 2 has a good corrosion resistance of smelting reduction melts with iron bath. The reasonable content of ZrO 2 in the AGZ refractory is 6~9% for smelting reduction technology. The investigationof the microstructure of AGT refractory shown that the major morphology of Ti in refractory is a well developed TiC network

CN106435222ASmelting method for silicon aluminium

According to the smelting method, multifurnace continuous smelting can be realized through special process control; and the purposes of reducing vanadium residue in the slag and improving the

Manganese Nodules Residue: Potential Raw Material for

Jan 02, 2012· The manganese nodule residue, generated in reduction roast ammonia leaching process has emerged as potential secondary raw material for production of ferrosilicomanagese. In the present paper, the smelting studies of low manganese containing leached manganese nodules residue blended with high grade Mn ore has been carried out in electric arc furnace for ferrosilicomanganese production.

Production of FerroSilicon and Calcium Silicon Alloys

At higher temperatures [15001800°C], the reduction of silica takes place by carbon Si02 + 2 C = Si + 2 CO This liquid silicon is quite volatile and it gets evaporated considerably during smelting. The high temperature near the arc zone [ > 1800°C promotes the reaction between Si02 and SiC, forming Si,

REDUCIBILITY AND ELECTRIC RESISTANCE OF

Reduction mechanism is more complicated during Si alloy smelting with slagfree technology. In this case the following is observed: solidphase reactions, reduction with gaseousphase reactions, interaction of products resulting in chemical reactions etc. Chromite reduction. According to reports [12] Cr203 reduction by carbon takes place at

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