No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
Dolomite, which is abundant in Vietnam, is the source for magnesum production. However, there is no research on the production of magnesium from the dolomite source in Vietnam so far. This paper studies the production process of Magnesium from the dolomite source in Thanh Hoa, Vietnam using the Pidgeon method with ferrosilicon as the reducing ...
reductant, reduction time on the magnesium reducing procedure from Thanhhoa dolomite by using Pidgeon process. 2. Material and Methods 2. 1. Materials Thanhhoa is a province in Vietnam with the rich source of dolomite in Thanhhoa district approximately a million tones. The collected dolomite patterns in this experiment are investigated
However, the lack of raw magnesium production seriously limits its application. At present, more than 80% of the original magnesium in the world is produced by the Pidgeon process [3, 4].The ...
81 energy source and resources, this also emits a large amount of waste gas, ... 141 The Pidgeon process uses dolomite as the main raw material, ferrosilicon as a 142 reducing agent, and fluorite ...
suggested an antenna structure consisting of dolomite as the Mg source and a ferrosilicon antenna as the reducing agent. This microwave Pidgeon process with an antenna configuration made it possible to produce Mg with an energy consumption of 58.6 GJ/t, corresponding to a 68.6 pct reduction when compared to the conventional method.
An antenna structure consisting of dolomite as the Mg source and a ferrosilicon antenna as the reducing material was used to confine microwave energy emitted from a magnetron installed in a ...
Thermochemical equilibrium calculations indicate the possibility of considerable fuel savings and CO 2 emission avoidance in the three steps of the Pidgeon process: (a) …
Pidgeon, is the dominant primary production method among all processes. It is based on the reduction of Mg in calcined dolomite ore by using ferrosilicon as a reductant in air-sealed retorts...
Pidgeon process. This process uses horizontal steel tubes called retorts, in furnaces and under vacuum. In the retorts mixtures of finely ground calcined dolomite and ferrosiiicon formed into briquettes react to form magnesium vapors which are condensed and later remelted into ingots. The Pidgeon process was long
In the present study, the production of magnesium metal from Turkish calcined dolomite containing 43.20 % MgO and 47.46 % CaO via Pidgeon process was studied under the pressure of 1 mbar.
An antenna structure consisting of dolomite as the Mg source and a ferrosilicon antenna ... In the Pidgeon process, crushed Mg ore (dolomite) is subjected to a calcination process (1,000–1,300 ...
An antenna structure consisting of dolomite as the Mg source and a ferrosilicon antenna as the reducing material was used to confine microwave energy emitted from a magnetron installed in a microwave oven to produce a practical amount of pure Mg metal. ... In the Pidgeon process, crushed Mg ore (dolomite) is subjected to a calcination process ...
Currently, metallic Mg is mainly produced through the silicothermic reduction process (Pidgeon process) in industry. The electrolytic process is mainly used for the realization of the entire "Mg ...
The Pidgeon process, developed in the 1940s (Pidgeon and Alexander, 1944), saw a large rise in application especially within China since the first industrial application in 1978 (Zang and Ding, 2016).
Context in source publication. Context 1 ... yields raw material at a quality similar to that used in the classical dolomite-based Pidgeon silicothermic reduction technique. The filtrate of the ...
Primary magnesium production from ores consists of hydrometallurgical extraction (Ağrılı 2019) followed by either thermal reduction (mainly the Pidgeon process) (Li et al. 2013) or molten-salt electrolysis (Lee et al. 2018).The thermal and electrolytic processes are both criticized for their toxic emissions and heavy energy requirements, noting that both alternatives operate …
The Pidgeon process makes full use of resources such as dolomite, coal, and ferrosilicon in the central and western regions of China. Because of low labor costs, reduction furnaces in foreign countries that use heavy oil and electricity as fuels can be converted to those that use coal as fuel, and this greatly reduces the production costs.
the Pidgeon process. Figure 1(a) shows the flow of the Pidgeon process, which comprises three stages: calcina-tion of dolomite (CaCO 3ÆMgCO 3), preparation of bri-quettes and silicothermic reduction of dolime (CaOÆMgO). In the calcination stage, dolomite was thermally decomposed in a rotary kiln to dolime and carbon dioxide as reaction [1].
An antenna structure consisting of dolomite as the Mg source and a ferrosilicon antenna as the reducing material was used to confine microwave energy emitted from a …
Used in the production of magnesium using Pidgeon process. Dolomite and dolomitic limestone are used in horticulture, as they are added to soils to help buffer the pH of the water and also as a magnesium source. ... building materials, the source of carbon dioxides, terrazzo tiles, floor, and walls. Dolomite is used in the steel industry as a ...
Thermochemical equilibrium calculations indicate the possibility of considerable fuel savings and CO 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. All three steps should benefit …
Dolomite can be used as a source of magnesium oxide. ... Dolomite is used in the Pidgeon process for the production of magnesium. Manufacturing factories can use it in the production of floating glass. The Dolomite contains minor quantities of radioactive materials; hence it can be used to insulate they from extraterrestrial rays. ...
The thermal reduction of dolomite by the Pidgeon silicothermic batch process is the most commercially robust form of magnesium production that is used on a large scale.
Context in source publication Context 1 M. Pidgeon was born in 1903 in Ontario, Canada (Fig. 1 work on "anti-knock compounds" under the supervision of Sir Alfred Egerton (1929)(1930)(1931).
An antenna structure consisting of dolomite as the Mg source and a ferrosilicon antenna as the reducing material was used to confine microwave energy emitted from a magnetron installed in a microwave oven to produce a practical amount of pure Mg metal. this microwave pidgeon process with an antenna configuration made it possible to produce Mg ...
Experimental setup for the microwave Pidgeon method comprising a multi-mode applicator (410 mm in width, 410 mm in depth, and 420 mm in height), a stirrer fan, and a magnetron as a microwave source.
The materials used in experiment were in accordance with the Pidgeon process, including calcined dolomite, ferrosilicon and fluorite, and the chemical compositions were listed in Table 1, ... In Pidgeon process, heat transfer occurring from layer by layer for the only source of heat was the outer wall of the reduction pot. And there were only ...
energy source and resources, this also emits a large amount of waste gas, causing serious environmental pollution. As seen from the advanced magne- ... The Pidgeon process uses dolomite as the main raw material, ferrosilicon as a reducing agent, and fluorite as a catalyst. After calculating, weighing, and batching,
Magnesium smelting via the Pidgeon process is a process in which raw material (dolomite) is fed into a reduction tank that is externally heated by a reduction furnace, and then the calcined …
The most commonly used source for magnesia is magnesium carbonate, with the largest source being magnesia- ... subsequently used to produce magnesium by reaction with calcined dolomite. The Pidgeon and Magnetherm processes employ this procedure. The Pidgeon process is a batch process in which dolime and silicon are sized, briquetted, and cha ...
