crucible


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Related to crucible: crucible steel

crucible,

vessel in which a substance is heated to a high temperature, as for fusing or calcining. The necessary properties of a crucible are that it maintain its mechanical strength and rigidity at high temperatures and that it not react in an undesirable way with its contents. Porcelainporcelain
[Ital. porcellana], white, hard, permanent, nonporous pottery having translucence which is resonant when struck. Porcelain was first made by the Chinese to withstand the great heat generated in certain parts of their kilns.
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, iron, and platinum are used in the lab; graphitegraphite
, an allotropic form of carbon, known also as plumbago and black lead. It is dark gray or black, crystalline (often in the form of slippery scales), greasy, and soft, with a metallic luster.
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 is usually used in industry, but firebrickfirebrick,
brick that can withstand high temperatures, used to line flues, stacks, furnaces, and fireplaces. In general, such bricks have high melting points that range from about 2,800°F; (1.540°C;) for fireclay to 4,000°F; (2,200°C;) for silicon carbide.
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 is also used, especially when vessels of large capacity are needed. The chamber at the bottom of a metal-refining furnace, where the molten metal collects to be drawn off, is known as a crucible.

Crucible

 

a vessel for melting, founding, or heating various materials. Crucibles are used, for example, for melting metals and alloys, for heat-treating metal objects in a controlled atmosphere or in liquid media (seeTANK FURNACE), for glassmaking, and for melting and calcining substances in the laboratory (seeLABORATORY VESSELS, CHEMICAL). Depending on the temperature of treatment and the chemical properties of the materials being treated, a crucible may be made of metal (pig iron, heat-resistant steels and alloys, or platinum), graphite, porcelain, or refractories. Crucibles are usually round in cross section and narrower at the bottom. In many industrial furnaces, materials are treated in crucibles inside the furnace itself.

crucible

[′krü·sə·bəl]
(science and technology)
A refractory vessel or pot, varying in size from a small laboratory utensil to large industrial equipment for melting or calcining.

crucible

1. a vessel in which substances are heated to high temperatures
2. the hearth at the bottom of a metallurgical furnace in which the metal collects
References in periodicals archive ?
The alumina crucible market has been studied across North America (United States, Mexico, and Canada), South America (Brazil, Colombia, Argentina, and others), Europe (Germany, Russia, France, UK, and Italy), Asia-Pacific (China, India, Japan, Korea, and Southeast Asia), and Middle East and Africa (Saudi Arabia, Nigeria, UAE, Egypt, and South Africa).
Christopher Hampson, CEO and artistic director of Scottish Ballet, said: "We are very excited to bring The Crucible to audiences across Scotland, as part of Scottish Ballet's 50th anniversary in 2019.
The venue was the scene of White's six World Championship final defeats in the 1980s and 90s, and the 'Whirlwind' said after his victory: "It sounds strange to be world champion at the Crucible." He also tweeted: "Got there in the end".
China Open semi-finalist Scott Donaldson and former Northern Ireland Open champion Mark King could also be in Doherty's way for a spot in the last 32 at the Crucible should he get past Lee.
Used in conjunction with Cyber Crucible's flagship product, organizations can automate daily response and analysis operations resulting in cost and risk reduction paired with human capital efficiency.
Two-time Crucible semi-finalist Marco Fu (below) is also facing a shock exit.
The charcoal-cooking process results in usable byproducts as well, beginning with the ash left at the bottom of the crucible. This ash can be used as a soil amendment to make acidic soils more alkaline.
The co-op members normally spend their days designing and building custom furniture, not dinosaur "suitcases." But the considerable skills of Crucible members proved to be highly adaptable, to say the least.
Martin, meanwhile, paid the shipping costs and bought a crucible and safety equipment for the project, which is expected to get started next year.
BARRY Hearn announced the Crucible will keep the World Championship until at least 2027 in a move that crushed Chinese hopes of snatching the event.
However, until now it has been difficult to find data relating to energy use and crucibles, and so to assess the cost of crucible ownership in a way that includes energy savings.