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Korea Zinc
Korea Zinc Company, Ltd. () is a non-ferrous metal smelter headquartered in Seoul, South Korea. It is one of the leading refined zinc-producing companies alongside Nyrstar, Hindustan Zinc, and Boliden. Korea Zinc was founded by Choi Ki-ho and Chang Byung-hee in 1974. Since its establishment, Korea Zinc has been co-managed by the Choi and Chang families. Operations Korea Zinc has an annual production capacity of 650,000 tons of zinc and 420,000 tons of lead. In addition, while smelting the zinc and lead, Korea Zinc produces gold, silver, and sulfuric acid as byproducts. Korea Zinc's production base is the Onsan refinery located in Ulsan Ulsan (), officially the Ulsan Metropolitan City is South Korea's seventh-largest metropolitan city and the eighth-largest city overall, with a population of over 1.1 million inhabitants. It is located in the south-east of the country, neighboring ..., South Korea. The company also manufactures and sells zinc ore through its Australian subsidia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Company
A public company is a company whose ownership is organized via shares of stock which are intended to be freely traded on a stock exchange or in over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange (listed company), which facilitates the trade of shares, or not (unlisted public company). In some jurisdictions, public companies over a certain size must be listed on an exchange. In most cases, public companies are ''private'' enterprises in the ''private'' sector, and "public" emphasizes their reporting and trading on the public markets. Public companies are formed within the legal systems of particular states, and therefore have associations and formal designations which are distinct and separate in the polity in which they reside. In the United States, for example, a public company is usually a type of corporation (though a corporation need not be a public company), in the United Kingdom it is usually a public limited company (plc), i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Smelting
Zinc smelting is the process of converting zinc concentrates (ores that contain zinc) into pure zinc. Zinc smelting has historically been more difficult than the smelting of other metals, e.g. iron, because in contrast, zinc has a low boiling point. At temperatures typically used for smelting metals, zinc is a gas that will escape from a furnace with the flue gas and be lost, unless specific measures are taken to prevent it. The most common zinc concentrate processed is zinc sulfide,. which is obtained by concentrating sphalerite using the froth flotation method. Secondary (recycled) zinc material, such as zinc oxide, is also processed with the zinc sulfide.. Approximately 30% of all zinc produced is from recycled sources. Methods There are two methods of smelting zinc: the pyrometallurgical process and the electrolysis process. Both methods are still used. Both of these processes share the same first step: roasting. Roasting Roasting is a process of oxidizing zinc sulfide co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Korean Companies Established In 1974
South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both east and west. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþaz'' ("south"), possibly related to the same Proto-Indo-European root that the word ''sun'' derived from. Some languages describe south in the same way, from the fact that it is the direction of the sun at noon (in the Northern Hemisphere), like Latin meridies 'noon, south' (from medius 'middle' + dies 'day', cf English meridional), while others describe south as the right-hand side of the rising sun, like Biblical Hebrew תֵּימָן teiman 'south' from יָמִין yamin 'right', Aramaic תַּימנַא taymna from יָמִין yamin 'right' and Syriac ܬܰܝܡܢܳܐ taymna from ܝܰܡܝܺܢܳܐ yamina (hence the name of Yemen, the land to the south/right of the Levant). Navigation By convention, the ''bottom or down-facing side'' of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sun Metals Solar Farm
The Sun Metals Solar Farm is a photovoltaic solar power station near Townsville in the Australian state of Queensland. It supplies some of the electricity consumed by the nearby Sun Metals (a subsidiary of Korea Zinc) zinc refinery as well as exporting to the National Electricity Market. When the Sun Metals Solar Farm started exporting electricity to the grid in May 2018, it took over from Clare Solar Farm The Clare Solar Farm is a solar farm located 35 kilometres south-west of Ayr at Clare in North Queensland, Australia. The 125 megawatt DC power station is owned by Lighthouse Solar. Construction commenced in 2016 and was complete by May 2018. ... as the largest capacity solar farm in Queensland. The project statutory approvals were supported by AECOM Australia Pty Ltd. Construction was undertaken by RCR Tomlinson. The solar farm is connected to the refinery's existing 33/132 kV substation and consists of over 1 million solar panels. The photovoltaic cells ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yonhap News Agency
Yonhap News Agency is a major South Korean news agency. It is based in Seoul, South Korea. Yonhap provides news articles, pictures and other information to newspapers, TV networks and other media in South Korea. History Yonhap (, , translit. ''Yeonhap''; meaning "united" in Korean) was established on 19 December 1980, through the merger of Hapdong News Agency and Orient Press. The Hapdong News Agency itself emerged in late 1945 out of the short-lived Kukje News, which had operated for two months out of the office of the Domei, the former Japanese news agency that had functioned in Korea during the Japanese colonial era. In 1999 Yonhap took over the Naewoe News Agency. Naewoe was a South Korea government-affiliated organization, created in the mid 1970s, and tasked with publishing information and analysis on North Korea from a South Korean perspective through books and journals. Naewoe was known to have close links with South Korea's intelligence agency, and according to the B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maeil Business Newspaper
The ''Maeil Business Newspaper'' is South Korea's main daily business newspaper. , it had a circulation of roughly 900,000. The president of the publishing company is Chang Dae-hwan. The publishing company Maekyung Media Group also hosts the annual World Knowledge Forum. The first edition of the newspaper was published on March the 24th, 1966, and had 12 pages in its inaugural issue. Political position Maeil Business Newspapers are generally moderate media, but many say they are close to pro-business conservatism. In particular, when major South Korean media are divided into the dichotomy of conservative and progressive-liberal, they are classified as clear conservative media. Notes Further reading * See also *Maeil Broadcasting Network Maeil Broadcasting Network, Inc. (MBN) (주식회사 매일방송) is a South Korean cable TV network operated by the ''Maeil Business Newspaper''. History Initially founded on September 23, 1993, as Maeil Business TV, the station's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulsan
Ulsan (), officially the Ulsan Metropolitan City is South Korea's seventh-largest metropolitan city and the eighth-largest city overall, with a population of over 1.1 million inhabitants. It is located in the south-east of the country, neighboring Busan to the south and facing Gyeongju to the north. Ulsan is the industrial powerhouse of South Korea, forming the heart of the Ulsan Industrial District. It has the world's largest automobile assembly plant, operated by the Hyundai Motor Company; the world's largest shipyard, operated by Hyundai Heavy Industries; and the world's third largest oil refinery, owned by SK Energy. In 2020, Ulsan had a GDP per capita of $65,352, the highest of any region in South Korea. Administrative divisions Ulsan is divided into four '' gu'' (districts) and one ''gun'' (county): *Buk District () * Dong District () * Jung District () * Nam District () *Ulju County () History Stone tools found at the Mugeo-dong Ok-hyeon archaeological site indicates t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korea Economic Daily
The ''Korea Economic Daily'' (nicknamed ''Hankyung'' (from ''han'' - South Korea and ''kyung'' - business) is a conservative and business daily newspaper in South Korea. It is the largest business newspaper by revenue in South Korea. It was founded on October 12, 1964, as the ''Daily Economic Newspaper'' and took its current name in 1980. '' Bloomberg Businessweek
''Bloomberg Businessweek'', previously known as ''BusinessWeek'', is an American weekly business magazine published fifty times a year. Since 2009, the magazine is owned by New York City-based Bloomberg L.P. The m ...
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Sulfuric Acid
Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with the molecular formula . It is a colorless, odorless and viscous liquid that is miscible with water. Pure sulfuric acid does not exist naturally on Earth due to its strong affinity to water vapor; it is hygroscopic and readily absorbs water vapor from the air. Concentrated sulfuric acid is highly corrosive towards other materials, from rocks to metals, since it is an oxidant with powerful dehydrating properties. Phosphorus pentoxide is a notable exception in that it is not dehydrated by sulfuric acid, but to the contrary dehydrates sulfuric acid to sulfur trioxide. Upon addition of sulfuric acid to water, a considerable amount of heat is released; thus the reverse procedure of adding water to the acid should not be performed since the heat released may boi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver
Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc Refining (metallurgy), refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes bimetallism, alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal in a pure form. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental ( native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate anion. Gold is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead Smelting
Plants for the production of lead are generally referred to as lead smelters. Primary lead production begins with sintering. Concentrated lead ore is fed into a sintering machine with iron, silica, limestone fluxes, coke, soda ash, pyrite, zinc, caustics or pollution control particulates. Smelting uses suitable reducing substances that will combine with those oxidizing elements to free the metal. Reduction is the final, high-temperature step in smelting. It is here that the oxide becomes the elemental metal. A reducing environment (often provided by carbon monoxide in an air-starved furnace) pulls the final oxygen atoms from the raw metal. Lead is usually smelted in a blast furnace, using the lead sinter produced in the sintering process and coke to provide the heat source. As melting occurs, several layers form in the furnace. A combination of molten lead and slag sinks to the bottom of the furnace, with a layer of the lightest elements referred to as speiss, including arsenic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
