The rest of us just brought prebaked cookies or dinner rolls.
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Despite the prebaked nature of the floor fight, it could still stretch on for hours.
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McConnell warned ahead of the debate that he had the votes to force through the rules, underlying the prebaked nature of the resolution on the trial process.
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Immigrants are suing over the ending of TPS for these countries, alleging the protections were terminated due to a prebaked agenda that violated the law, as well as a racist agenda.
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He was so careful to avoid repeating himself or inserting too many of his most frequently used, obviously canned lines that the prebaked blather of other candidates — Trump in particular — came into starker relief.
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Google also open-sourced BERT's code, which means that other researchers don't have to repeat the recipe from scratch — they can just download BERT as-is, like buying a prebaked pie crust from the supermarket.
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Prebaked anode, a raw material used at aluminium smelters, will also see a glut in supply, with redundant capacity set to reach 9 million tonnes in 2018, before climbing more in the coming three years, according to Sun.
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Alumina is added to the electrolyte from between the anodes in prebake cells. Prebaked anodes contain a smaller percentage of pitch, as they need to be more solid than Söderberg anodes. The remains of prebaked anodes are used to make more new prebaked anodes. Prebaked anodes are either made in the same factory where electrolysis happens, or are brought there from elsewhere.
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The baking process in Söderberg anodes during electrolysis releases more carcinogenic PAHs and other pollutants than electrolysis with prebaked anodes and, partially for this reason, prebaked anode-using cells have become more common in the aluminium industry. More alumina is added to the electrolyte from the sides of the Söderberg anode after the crust on top of the electrolyte mixture is broken. Prebaked anodes are baked in very large gas-fired ovens at high temperature before being lowered by various heavy industrial lifting systems into the electrolytic solution. There are usually 24 prebaked anodes in two rows per cell.
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Prebaked Consumable Carbon Anodes are a specific type of anode designed for aluminium smelting using the Hall-Héroult process.
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Most of the modern smelters use prebaked anodes since the process control is easier and a slightly better energy efficiency is achieved, compared to Soderberg anodes.
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The top lining is in contact with the molten metal and acts as the cathode. The molten electrolyte is maintained at high temperature inside the cell. The prebaked anode is also made of carbon in the form of large sintered blocks suspended in the electrolyte. A single Soderberg electrode or a number of prebaked carbon blocks are used as anode, while the principal formulation and the fundamental reactions occurring on their surface are the same.
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Each anode is lowered vertically and individually by a computer, as the bottom surfaces of the anodes are eaten away during the electrolysis. Compared to Söderberg anodes, computer-controlled prebaked anodes can be brought closer to the molten aluminium layer at the bottom of the cell without any of them touching the layer and interfering with the electrolysis. This smaller distance decreases the resistance caused by the electrolyte mixture and increases the efficiency of prebaked anodes over Söderberg anodes. Prebake technology also has much lower risk of the anode effect (see below), but cells using it are more expensive to build and labor-intensive to use, as each prebaked anode in a cell needs to be removed and replaced once it has been used.
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Prebaked anodes are divided into graphitized and coke types. For manufacturing of the graphitized anodes, anthracite and petroleum coke are calcined and classified. They are then mixed with coal-tar pitch and pressed. The pressed green anode is then baked at 1200 °C and graphitized.
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Armenian khash Fresh and prebaked sheep heads being sold in a market Khash (; ; , Khashi), pacha (; ; ; ; ; ), kalle-pache (; ; ), kakaj šürpi () or serûpê () is a dish of boiled cow or sheep parts, which might include the head, feet, and stomach (tripe). It is a traditional dish in Afghanistan, Albania, Armenia, Azerbaijan, Bosnia and Herzegovina, Bulgaria, Georgia, Greece, Iran, Iraq, Kuwait, Bahrain, Mongolia, and Turkey.
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Swelling results in early and non-uniform deterioration of cathode blocks. Anode: Carbon anodes have a specific situation in aluminium smelting and depending on the type of anode, aluminium smelting is divided in two different technologies; “Soderberg” and “prebaked” anodes. Anodes are also made of petroleum coke, mixed with coal-tar-pitch, followed by forming and baking at elevated temperatures. The quality of anode affects technological, economical and environmental aspects of aluminium production.
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Energy efficiency is related to the nature of anode materials, as well as the porosity of baked anodes. Around 10% of cell power is consumed to overcome the electrical resistance of prebaked anode (50–60 μΩm). Carbon is consumed more than theoretical value due to a low current efficiency and non-electrolytic consumption. Inhomogeneous anode quality due to the variation in raw materials and production parameters also affects its performance and the cell stability.
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The anode effect decreases the energy-efficiency and the aluminium production of the cell. It also induces the formation of tetrafluoromethane (CF4) in significant quantities, increases formation of CO and, to a lesser extent, also causes the formation of hexafluoroethane (C2F6). CF4 and C2F6 are not CFCs, and, although not detrimental to the ozone layer, are still potent greenhouse gases. The anode effect is mainly a problem in Söderberg technology cells, not in prebaked.
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Electrodes in cells are mostly coke which has been purified at high temperatures. Pitch resin or tar is used as a binder. The materials most often used in anodes, coke and pitch resin, are mainly residues from the petroleum industry and need to be of high enough purity so no impurities end up into the molten aluminum or the electrolyte. There are two primary anode technologies using the Hall–Héroult process: Söderberg technology and prebaked technology.
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Fresh and prebaked Smalahove (sheep heads) being sold in a market Smalahove (also called smalehovud, sau(d)ehau(d) or skjelte) is a Western Norwegian traditional dish made from a sheep's head, originally eaten before Christmas. The name of the dish comes from the combination of the Norwegian words hove and smale. Hove is a dialectal form of hovud, meaning "head" (cf. Hǫfuð), and smale is a word for sheep, so smalahove literally means "sheep head".
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Other Environmental assessments conducted during the 1980s include the 1981 Environmental Impact Assessment by the Department of Environment and Planning. This assessment found Line I of the Smelter to produce higher emissions compared to Line II due to a lack of hooding efficiencies. Hooding efficiency refers to the percentage of fumes captured from aluminium smelting and should be at least 95% for prebaked pots. The assessment also found that for every tonne of aluminium produced, 15 kg of fluoride is emitted as a by-product, accumulating to 675 tonnes of fluoride emissions a year.
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The conversion of alumina to aluminium metal is achieved by the Hall–Héroult process. In this energy-intensive process, a solution of alumina in a molten () mixture of cryolite (Na3AlF6) with calcium fluoride is electrolyzed to produce metallic aluminium. The liquid aluminium metal sinks to the bottom of the solution and is tapped off, and usually cast into large blocks called aluminium billets for further processing. Extrusion billets of aluminium Anodes of the electrolysis cell are made of carbon—the most resistant material against fluoride corrosion—and either bake at the process or are prebaked.
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The former, also called Söderberg anodes, are less power-efficient and fumes released during baking are costly to collect, which is why they are being replaced by prebaked anodes even though they save the power, energy, and labor to prebake the cathodes. Carbon for anodes should be preferably pure so that neither aluminium nor the electrolyte is contaminated with ash. Despite carbon's resistivity against corrosion, it is still consumed at a rate of 0.4–0.5 kg per each kilogram of produced aluminium. Cathodes are made of anthracite; high purity for them is not required because impurities leach only very slowly.
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