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Tiwai Point Aluminium Smelter
The Tiwai Point Aluminium Smelter is an aluminium smelter owned by Rio Tinto Group (79.36%) and the Sumitomo Group (20.64%), via a joint venture called New Zealand Aluminium Smelters (NZAS) Limited. The facility, New Zealand's only aluminium smelter, is at Tiwai Point, near Bluff. It imports alumina and processes it into primary aluminium. The plant's alumina is supplied from refineries in Queensland and the Northern Territory of Australia. Around 90 per cent of the aluminium produced at NZAS is exported, mainly to Japan. The smelter was opened in 1971 following the construction of the Manapouri Power Station by the New Zealand government to supply it with electricity. It uses 13 percent of New Zealand's electricity, and is reported to account for 10 percent of the Southland region's economy. Rio Tinto has threatened to close the smelter several times, for example in 2013 and 2020, but to date closure has been deferred after renegotiation of the price it pays for electrici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiwai Point Aluminium Smelter
The Tiwai Point Aluminium Smelter is an aluminium smelter owned by Rio Tinto Group (79.36%) and the Sumitomo Group (20.64%), via a joint venture called New Zealand Aluminium Smelters (NZAS) Limited. The facility, New Zealand's only aluminium smelter, is at Tiwai Point, near Bluff. It imports alumina and processes it into primary aluminium. The plant's alumina is supplied from refineries in Queensland and the Northern Territory of Australia. Around 90 per cent of the aluminium produced at NZAS is exported, mainly to Japan. The smelter was opened in 1971 following the construction of the Manapouri Power Station by the New Zealand government to supply it with electricity. It uses 13 percent of New Zealand's electricity, and is reported to account for 10 percent of the Southland region's economy. Rio Tinto has threatened to close the smelter several times, for example in 2013 and 2020, but to date closure has been deferred after renegotiation of the price it pays for electrici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Dioxide
Carbon dioxide ( chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas. It is a trace gas in Earth's atmosphere at 421 parts per million (ppm), or about 0.04% by volume (as of May 2022), having risen from pre-industrial levels of 280 ppm. Burning fossil fuels is the primary cause of these increased CO2 concentrations and also the primary cause of climate change.IPCC (2022Summary for policy makersiClimate Change 2022: Mitigation of Climate Change. Contribution of Working Group III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA Carbon dioxide is soluble in water and is found in groundwater, lakes, ice ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megawatt
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Grid (New Zealand)
The National Grid is the nationwide system of electric power transmission in New Zealand. The grid is owned, operated and maintained by Transpower New Zealand, a state-owned enterprise, although some lines are owned by local distribution companies and leased to Transpower. In total, the national grid contains of high-voltage lines and 178 substations. Much of New Zealand’s electricity generation is hydroelectric, the majority of which is from power stations on lakes and rivers in the lower half of the South Island, while most of the electricity demand is in the North Island, in particular, the Auckland region. Consequently, large amounts of electricity need to be transmitted long distances from power stations to electricity users, including transmission across Cook Strait through the HVDC Inter-Island link. Investments in new transmission are regulated by the Electricity Commission and the Commerce Commission. In a news release in January 2012, the Commerce Commission ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Think Big
In their most common sense, the terms thought and thinking refer to conscious cognitive processes that can happen independently of sensory stimulation. Their most paradigmatic forms are judging, reasoning, concept formation, problem solving, and deliberation. But other mental processes, like considering an idea, memory, or imagination, are also often included. These processes can happen internally independent of the sensory organs, unlike perception. But when understood in the widest sense, any mental event may be understood as a form of thinking, including perception and unconscious mental processes. In a slightly different sense, the term ''thought'' refers not to the mental processes themselves but to mental states or systems of ideas brought about by these processes. Various theories of thinking have been proposed, some of which aim to capture the characteristic features of thought. ''Platonists'' hold that thinking consists in discerning and inspecting Platonic forms and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Third National Government Of New Zealand
The Third National Government of New Zealand (also known as the Muldoon Government) was the government of New Zealand from 1975 to 1984. It was an economically conservative government that aimed to preserve the Keynesian economic system established by the First Labour government and was also socially conservative. Throughout its three terms it was led by Robert Muldoon, a populist but antagonistic politician who was sometimes described as the National Party's best asset and worst liability. Significant policies By 1975, New Zealand had a generous welfare system, which included unemployment and sickness benefits, a benefit for single parents (the DPB) and a means tested old-age pension from the normal retirement age of 60 plus a Universal pension from 65 years. The third National government scrapped Labour's contributory scheme and introduced National Superannuation, a non-means tested pension available to all New Zealand citizens over the age of 60, linked to the average ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hall–Héroult Process
The Hall–Héroult process is the major industrial process for smelting aluminium. It involves dissolving aluminium oxide (alumina) (obtained most often from bauxite, aluminium's chief ore, through the Bayer process) in molten cryolite, and electrolyzing the molten salt bath, typically in a purpose-built cell. The Hall–Héroult process applied at industrial scale happens at 940–980 °C and produces 99.5–99.8% pure aluminium. Recycled aluminum requires no electrolysis, thus it does not end up in this process. This process contributes to climate change through the emission of carbon dioxide and fluorocarbons in the electrolytic reaction and consumption of large amounts of electrical energy. Process Difficulties faced Elemental aluminium cannot be produced by the electrolysis of an aqueous aluminium salt, because hydronium ions readily oxidize elemental aluminium. Although a molten aluminium salt could be used instead, aluminium oxide has a melting point of 2072&nbs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aramoana
Aramoana is a small coastal settlement north of Dunedin on the South Island of New Zealand. The settlement's permanent population in the 2001 Census was 261. Supplementing this are seasonal visitors from the city who occupy cribs. The name ''Aramoana'' is Māori for "pathway of the sea". It was founded by the Otago Harbour Board and established in the 1880s as a pilot station for navigation around the mouth of the Otago Harbour. This area grew into a small farming village. In the 1950s, the town became popular as a beach resort and a rural life village due to the construction of a mole to inhibit the spread of tidal sands into the mouth of Otago Harbour and was surveyed and amalgamated as a suburb of Port Chalmers borough. It is the site of the Aramoana massacre, New Zealand's second deadliest criminal shooting, on 13 and 14 November 1990. Location and natural environment The settlement is located on a sand dune spit at the mouth of the Otago Harbour, opposite the end of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Showa Denko
, founded in 1939 by the merger of Nihon Electrical Industries and Showa Fertilizers, both established by a Japanese entrepreneur Nobuteru Mori, is a Japanese chemical company producing chemical products and industrial materials. SDK's products serve a wide array of fields ranging from heavy industry to the electronic and computer industries. The company is divided in five business sectors: petrochemicals (olefins, organic chemicals, plastic products), aluminum (aluminum cans, sheets, ingots, foils), electronics (semiconductors, ceramic materials, hard disk drive platters), chemicals (industrial gases, ammonia, agrochemicals), and inorganic materials (ceramics, graphite electrodes). Showa Denko has more than 180 subsidiaries and affiliates. The company has vast overseas operations and a joint venture with Netherlands-based Montell and Nippon Petrochemicals to make and market polypropylenes. In March 2001, SDK merged with Showa Denko Aluminum Corporation to strengthen the high-v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comalco
Rio Tinto Aluminium (previously known as Comalco) is now known as Rio Tinto Alcan after Rio's takeover of Alcan. It was the world's eighth largest aluminium company. It mines and manufactures bauxite, alumina and primary aluminium. Rio Tinto Aluminium is a wholly owned subsidiary of Rio Tinto Group and provides about 20% of Australia's total production of bauxite, 8% of its alumina and 24% of its primary aluminium. In 2002, Rio Tinto Aluminium earned US$256 million for its shareholder Rio Tinto. In 2006 Rio Tinto Aluminium was the largest receiver of budgetary assistance from the Australian government, Rio Tinto Aluminium had received over $287 million in assistance from Australian tax dollars. RTA owns the Weipa Weipa () is a coastal mining town in the local government area of Weipa Town in Queensland. It is the largest town on the Cape York Peninsula. It exists because of the enormous bauxite deposits along the coast. The Port of Weipa is mainly involv ... Bauxite mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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