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Ferrosilicon Process for Magnesium By process

Ferrosilicon magnesium production | Request PDF

The aim of this study is to investigate the different parameters controlling the ferrosilicon magnesium alloy production by the silicothermic process and to investigate a technique for the ...

(PDF) Ferrosilicon magnesium production | Taha Mattar

Ferrosilicon magnesium consists mainly of magnesium silicides combined with the silicides of iron, calcium and rare earth metals.The production of ferrosilicon magnesium could be carried out by the reduction technique either by carbon in the carbothermic process, or by silicon and/or aluminium in the metallothermic process.The high potential ...

Ferrosilicon magnesium production - El‐Faramawy - 2003 ...

2003-1-15 · The production of ferrosilicon magnesium by using carbon as a reducing agent in an electric arc furnace leads to serious problems owing to its high working temperature and the high vapour pressure of magnesium. On the other hand, the high cost of using aluminium in the production process and contamination of the produced alloy with aluminium ...

Experimental Study of Magnesium (Mg) Production by an ...

2021-1-6 · The decrease of magnesium production efficiency in the new short process was expected to result from reduction of the contact area and hindering of diffusion between CaO·MgO molecules and Si(Fe) atoms because of the microstructure change and ferrosilicon consumption by the reactions between CO 2 and metal elements in ferrosilicon. Preparing ...

Magnesium from Dolomite by Ferrosilicon Reduction |

2021-3-12 · A new ferrosilicon process has been developed by L. M. Pidgeon, of the Canadian National Research Council. Pidgeon found that the reaction between ferrosilicon and magnesium oxide proceeds smoothly at practicable temperatures under vacuum in

NUMERICAL SIMULATION OF MAGNESIUM

2009-10-29 · Pidgeon process is a thermal reduction process, which produces magnesium from calcined dolomite under a vacuum pressure of ~10 Pa and at a temperature of 1150~1200℃ using ferrosilicon as a reducing agent. A small quantity of calcium fluoride is added as a catalyst. The whole process is carried out in a refractory brick

The silicothermic reduction of magnesium in flowing argon ...

2020-9-1 · The Pidgeon process is a thermal reduction process that extracts magnesium from calcined dolomite under a vacuum pressure of 10 Pa and a temperature of 1100 ∼ 1200 °C by the ferrosilicon as a reducing agent and calcium fluoride as a mineralization agent in a horizontally placed reduction pot.

Start-up slags for producing magnesium from dolomite

2013-7-29 · the reduction of magnesium oxide by a silicothermic process in which silicon (usually in the form of ferrosilicon) is used as a reducing agent. This process may be carried out in special reactors – either externally heated retorts (the Pidgeon process) (Pidgeon,

Thermal reduction process for production of magnesium ...

Magnesium is produced by a thermal reduction process in a reaction-condensation system having a reaction zone and a condensation zone. According to this process, a reducing agent containing ferrosilicon and at least 25 wt. % aluminum is contacted in the reaction zone with a calcium-silicon-aluminum-magnesium oxide slag to produce magnesium vapor.

US20120198968A1 - Method for producing metallic

A method for producing metallic magnesium by vacuum circulating silicothermic process and apparatus thereof The method comprises the following steps: passing molten ferrosilicon ( 109 ) of 1350˜1600° C. and magnesium ore powder containing magnesia blended therein through a vacuum container ( 104 ) with a vacuum of 350˜10000 Pa periodically in a manner of

(PDF) Ferrosilicon magnesium production | Taha Mattar

Ferrosilicon magnesium consists mainly of magnesium silicides combined with the silicides of iron, calcium and rare earth metals.The production of ferrosilicon magnesium could be carried out by the reduction technique either by carbon in the carbothermic process, or by silicon and/or aluminium in the metallothermic process.The high potential ...

Experimental Study of Magnesium (Mg) Production by an ...

The decrease of magnesium production efficiency in the new short process was expected to result from reduction of the contact area and hindering of diffusion between CaO.MgO molecules and Si(Fe) atoms because of the microstructure change and ferrosilicon consumption by the reactions between CO 2 and metal elements in ferrosilicon.

Magnesium from Dolomite by Ferrosilicon Reduction |

2021-3-12 · A new ferrosilicon process has been developed by L. M. Pidgeon, of the Canadian National Research Council. Pidgeon found that the reaction between ferrosilicon and magnesium oxide proceeds smoothly at practicable temperatures under vacuum in

Magnesium production by the Pidgeon process involving ...

2008-4-15 · Abstract. Thermochemical equilibrium calculations indicate the possibility of considerable fuel savings and CO{sub 2} emission avoidance in the three steps of the Pidgeon process: (a) calcination of dolomite; (b) production of ferrosilicon from quartz sand, coal, and iron oxide; (c) silicothermic reduction of calcined dolomite by ferrosilicon to magnesium.

US20120198968A1 - Method for producing metallic

A method for producing metallic magnesium by vacuum circulating silicothermic process and apparatus thereof The method comprises the following steps: passing molten ferrosilicon ( 109 ) of 1350˜1600° C. and magnesium ore powder containing magnesia blended therein through a vacuum container ( 104 ) with a vacuum of 350˜10000 Pa periodically in a manner of

jaw Pidgeon Process Magnesium Production Plant |

2. Magnesium production using Pidgeon process in China 2.1. Pidgeon process A plant for magnesium production based on the ferrosilicon process was built in Canada in the early 1940s (Mayer, 1944) to produce magnesium at the rate of ~4500kg per annum (or 10,000lb per year). This process (Pidgeon and Alexander, 1944)―later known as the

Start-up slags for producing magnesium from dolomite

2013-7-29 · the reduction of magnesium oxide by a silicothermic process in which silicon (usually in the form of ferrosilicon) is used as a reducing agent. This process may be carried out in special reactors – either externally heated retorts (the Pidgeon process) (Pidgeon,

The silicothermic reduction of magnesium in flowing argon ...

2020-9-1 · The Pidgeon process is a thermal reduction process that extracts magnesium from calcined dolomite under a vacuum pressure of 10 Pa and a temperature of 1100 ∼ 1200 °C by the ferrosilicon as a reducing agent and calcium fluoride as a mineralization agent in a horizontally placed reduction pot.

Magnesium-titanium-ferrosilicon alloys for producing ...

A magnesium ferrosilicon alloy particularly suitable for producing compacted graphite cast iron in the inmold process comprising from about 1.5 to about 3.0 percent magnesium, from about 10 to about 20 percent titanium, from about 40 to about 80 percent silicon, up to about 2 percent rare earth, up to about 0.5 percent calcium, up to about 2 ...

Effect of Reductant Type on the Metallothermic

This paper is a contribution to the theoretical and quantitative understanding of the processes for the production of magnesium metal by metallothermic process in vacuum (Pidgeon Process). In the present study, effects of reductant type and amount were investigated. CaC 2 is a low-cost alternative to FeSi (ferrosilicon) which is the common reductant in the Pidgeon Process. CaC 2

Magnesium production by the Pidgeon process involving ...

2008-4-15 · Abstract. Thermochemical equilibrium calculations indicate the possibility of considerable fuel savings and CO{sub 2} emission avoidance in the three steps of the Pidgeon process: (a) calcination of dolomite; (b) production of ferrosilicon from quartz sand, coal, and iron oxide; (c) silicothermic reduction of calcined dolomite by ferrosilicon to magnesium.

jaw Pidgeon Process Magnesium Production Plant |

2. Magnesium production using Pidgeon process in China 2.1. Pidgeon process A plant for magnesium production based on the ferrosilicon process was built in Canada in the early 1940s (Mayer, 1944) to produce magnesium at the rate of ~4500kg per annum (or 10,000lb per year). This process (Pidgeon and Alexander, 1944)―later known as the

Start-up slags for producing magnesium from dolomite

2013-7-29 · the reduction of magnesium oxide by a silicothermic process in which silicon (usually in the form of ferrosilicon) is used as a reducing agent. This process may be carried out in special reactors – either externally heated retorts (the Pidgeon process) (Pidgeon,

Magnesium-titanium-ferrosilicon alloys for producing ...

A magnesium ferrosilicon alloy particularly suitable for producing compacted graphite cast iron in the inmold process comprising from about 1.5 to about 3.0 percent magnesium, from about 10 to about 20 percent titanium, from about 40 to about 80 percent silicon, up to about 2 percent rare earth, up to about 0.5 percent calcium, up to about 2 ...

WO2005103309A1 - Metallothermic process for

METALLOTHERMIC PROCESS FOR MAGNESIUM PRODUCTION is based on heating the batch mixture of calcined dolomite and ferrosilicon up to temperature of about 1200°C under residual pressure less than 670 Pa and condensing the magnesium vapor. To increase magnesium extraction, a batch mixture of fine­-dispersed at least partially calcined dolomite

Technological breakthrough of the Mintek thermal

2009-8-26 · ‘Pidgeon’ process1, used by the Chinese magnesium producers. It is a thermal reduction method carried out under vacuum in coal-fired retorts, and is based on the reaction of calcined dolomite with ferrosilicon. The Pidgeon process was invented and developed in Canada in the 1940s. It is a labour-intensive batch process.

How is Magnesium Extracted? - SPOTLIGHTMETAL

2021-4-27 · Thermal reduction process proceeds as follows: 1. Calcination of dolomite to dolime, 2. Blending of the dolime with a reductant, such as ferrosilicon, 3. Heating of the dolime-reductant mixture is a vessel under vacuum, 4. Condensation of the liberated magnesium vapor,

Nodulizing and Inoculation Approaches - ASI

2020-5-14 · Fifty percent ferrosilicon is produced in a submerged-arc furnace and then alloyed with magnesium, calcium and rare earths, also known as mischmetal. The relative cost to produce 50 percent ferrosilicon, based on a nominal 25-mil power rate ($0.025/kilowatt), is

FERROSILICON PRODUCTION AND OPERATION

2015-2-27 · FERROSILICON PRODUCTION AND OPERATION EXPERIMENTAL A total of 13 different small-scale induction furnace experiments has been conducted. Two induction furnaces have been used and were operated between 20 and 25 kW. To simulate the Si process, the set up was arranged to give a high temperature at the bottom of the crucible, and a

Magnesium: extraction-Metalpedia

The process gives magnesium with up to 99.99% purity, slightly higher than from the electrolytic processes. The electrolytic process Used to treat magnesite, serpentine, seawater magnesia and brines from carnallite and lake waters, the electrolytic process is