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Catalan Forge (furnace)
The Catalan forge is a set of technological processes designed to obtain iron by directly Direct reduction, reducing the Iron ore, ore—without going through the intermediary of smelting as in a blast furnace—and then shingling the resulting .Massé: iron burr obtained in the furnace after ore reduction. The Catalan forge employs hydraulic power to operate a hammer or trip hammer, and a ventilation system, known as the trompe, is utilized to maintain the furnace's combustion. The term refers to the technology and building where this activity occurs. Despite its name, this type of forge was used extensively from the 17th to the 19th century in mountainous regions such as the Alps, the Massif Central, and the Pyrenees, as well as by the first American settlers. Origin Metallurgy has used rich, easily meltable ores for millennia, including compact brown hematites and decomposed, hydrated carbonates. The ores were placed in circular hearths dug into the ground and constructed fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forge Catalane, Pech
A forge is a type of hearth used for heating metals, or the workplace (smithy) where such a hearth is located. The forge is used by the Smith (metalwork), smith to heat a piece of metal to a temperature at which it becomes easier to shape by forging, or to the point at which work hardening no longer occurs. The metal (known as the "workpiece") is transported to and from the forge using tongs, which are also used to hold the workpiece on the smithy's anvil while the smith works it with a hammer. Sometimes, such as when hardening steel or cooling the work so that it may be handled with bare hands, the workpiece is transported to the #Slack tub, slack tub, which rapidly cools the workpiece in a large body of water. However, depending on the metal type, it may require an oil quench or a salt brine instead; many metals require more than plain water hardening. The slack tub also provides water to control the fire in the forge. Types Coal/coke/charcoal forge A forge typically ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Refining (metallurgy)
In metallurgy, refining consists of purifying an impure metal. It is to be distinguished from other processes such as smelting and calcining in that those two involve a chemical change to the raw material, whereas in refining the final material is chemically identical to the raw material. Refining thus increases the purity of the raw material via processing. There are many processes including pyrometallurgical and hydrometallurgical techniques. Lead Cupellation One ancient process for extracting the silver from lead was cupellation. This process involved melting impure lead samples in a cupel, a small porous container designed for purification that would aid in the oxidation process, while being able to withstand the heat needed to melt these metals in a furnace. This reaction would oxidize the lead to litharge, along with any other impurities present, whereas the silver would not get oxidized. In the 18th century, the process was carried on using a kind of reverbe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meurthe-et-Moselle
Meurthe-et-Moselle () is a '' département'' in the Grand Est region of France, named after the rivers Meurthe and Moselle. Its prefecture and largest city is Nancy and it borders the departments of Meuse to the west, Vosges to the south, Moselle and Bas-Rhin and it borders the Belgian province of Luxembourg and the country of Luxembourg by the canton of Esch-sur-Alzette to the north. It had a population of 733,760 in 2019.Populations légales 2019: 54 Meurthe-et-Moselle INSEE History Meurthe-et-Moselle was created in 1871 at the end of the from the parts of the former departments of[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moselle (department)
Moselle () is the most populous department in Lorraine, in the northeast of France, and is named after the river Moselle, a tributary of the Rhine, which flows through the western part of the department. It had a population of 1,046,543 in 2019.Populations légales 2019: 57 Moselle INSEE Inhabitants of the department are known as ''Mosellans''. History 
On 4 March 1790 Moselle became one ...
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Meurthe (department)
Meurthe () is a former department of France created in 1790. Its prefecture (capital) was Nancy. It ceased to exist following the annexation of Alsace-Lorraine by Germany in 1871. General characteristics The department of Meurthe was created on 4 March 1790, during the French Revolution, out of a part of the former province of Lorraine. It took its name from the river Meurthe flowing through it. As of 1866, Meurthe had 714 communes. Its area was . It was divided into 5 arrondissements: Nancy, Château-Salins, Lunéville, Sarrebourg and Toul. History After the French defeat in the Franco-Prussian War of 1870–1871, the northeastern part of the Meurthe department was annexed to the German Empire by the Treaty of Frankfurt. On 18 May 1871 about one-third of the Meurthe, corresponding approximately to the arrondissements of Château-Salins and Sarrebourg in the northeast of the department, were detached from Meurthe and annexed to the German Department of Lorraine, bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franco-Prussian War
The Franco-Prussian War or Franco-German War, often referred to in France as the War of 1870, was a conflict between the Second French Empire and the North German Confederation led by the Kingdom of Prussia. Lasting from 19 July 1870 to 28 January 1871, the conflict was caused primarily by France's determination to reassert its dominant position in continental Europe, which appeared in question following the decisive Austro-Prussian War, Prussian victory over Austria in 1866. According to some historians, Prussian chancellor Otto von Bismarck deliberately provoked the French into declaring war on Prussia in order to induce four independent southern German states—Grand Duchy of Baden, Baden, Kingdom of Württemberg, Württemberg, Kingdom of Bavaria, Bavaria and Grand Duchy of Hesse, Hesse-Darmstadt—to join the North German Confederation. Other historians contend that Bismarck exploited the circumstances as they unfolded. All agree that Bismarck recognized the potential for new ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gilchrist–Thomas Process
The Gilchrist–Thomas process or Thomas process is a historical process for refining (metallurgy), refining pig iron, derived from the Bessemer converter. It is named after its inventors who patented it in 1877: Percy Gilchrist, Percy Carlyle Gilchrist and his cousin Sidney Gilchrist Thomas. By allowing the exploitation of phosphorous iron ore, the most abundant, this process allowed the rapid expansion of the steel industry outside the United Kingdom and the United States. The process differs essentially from the Bessemer process in the Refractory, refractory lining of the Converting (metallurgy), converter. The latter, being made of dolomite (rock), dolomite () fired with tar, is base (chemistry), basic (Magnesium oxide, MgO giving anions), whereas the Bessemer lining, made of packed sand, is acidic ( accepting anions) according to the Lux-Flood theory of Molten salt, molten oxides. Phosphorus, by migrating from liquid iron to molten slag, allows both the production of a ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrénées-Atlantiques
Pyrénées-Atlantiques (; Gascon language, Gascon Occitan language, Occitan: ''Pirenèus Atlantics''; ) is a Departments of France, department located in the Regions of France, region of Nouvelle-Aquitaine in the southwest corner of metropolitan France. Named after the Pyrenees mountain range and the Atlantic Ocean, it covers the French Basque Country and the Béarn. It is divided in Arrondissements of the Pyrénées-Atlantiques department, three arrondissements and its Prefectures in France, prefecture is Pau, Pyrénées-Atlantiques, Pau. In 2019, it had a population of 682,621.Populations légales 2019: 64 Pyrénées-Atlantiques INSEE History Originally named Basses-Pyrénées, it was one of the 83 departments of France created during the French Revolution, o ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ariège (department)
Ariège (; ) is a Departments of France, department in southwestern France, located in the regions of France, region of Occitania (administrative region), Occitanie. It is named after the river Ariège (river), Ariège and its capital is Foix. Ariège is known for its rural landscape, with a population of 153,287 as of 2019.Populations légales 2019: 09 Ariège INSEE Its Institut national de la statistique et des études économiques, INSEE and postal code is 09, hence the department's informal name of ''le zéro neuf''. The inhabitants of the department are known as ''Ariègeois'' or ''Ariègeoises''. Geography [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrénées-Orientales
Pyrénées-Orientales (; ; ; ), also known as Northern Catalonia, is a departments of France, department of the Regions of France, region of Occitania (administrative region), Occitania, Southern France, adjacent to the northern Spain, Spanish frontier and the Mediterranean Sea. It borders the departments of Ariège (department), Ariège to the northwest and Aude to the north, the Mediterranean Sea to the east and the Spanish province of Girona in Catalonia to the south and the country of Andorra to the west. It also surrounds the tiny Spanish exclave of Llívia, and thus has two distinct borders with Spain. In 2019, it had a population of 479,979.Populations légales 2019: 66 Pyrénées-Orientales INSEE Some parts of the Pyrénées-Orientales (like the Cerdagne) are part of the I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
