About: Pattison's Process

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Pattinson's Process, or pattinsonisation is a method for removing silver from lead discovered by Hugh Lee Pattinson in 1829 and patented in 1833. The process is dependent on the fact that lead which has least silver in it solidifies first on liquefaction, leaving the remaining liquid richer in silver. * Sections of a pot * Arrangement of pots used in a smelting mill The process was economic for lead containing at least 250 grams of silver per ton. Being the first process applicable to low-grade lead, it supplemented earlier patio process and pan amalgamation.

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rdf:type	software yago:WikicatMetallurgicalProcesses yago:Abstraction100002137 yago:Act100030358 yago:Activity100407535 yago:Event100029378 yago:Procedure101023820 yago:PsychologicalFeature100023100 yago:YagoPermanentlyLocatedEntity
rdfs:label	Pattison's Process (en)
rdfs:comment	Pattinson's Process, or pattinsonisation is a method for removing silver from lead discovered by Hugh Lee Pattinson in 1829 and patented in 1833. The process is dependent on the fact that lead which has least silver in it solidifies first on liquefaction, leaving the remaining liquid richer in silver. * Sections of a pot * Arrangement of pots used in a smelting mill The process was economic for lead containing at least 250 grams of silver per ton. Being the first process applicable to low-grade lead, it supplemented earlier patio process and pan amalgamation. (en)
foaf:depiction
dct:subject	Lead Silver Metallurgical processes
Wikipage page ID	3047387 (xsd:integer)
Wikipage revision ID	1058369762 (xsd:integer)
Link from a Wikipage to another Wikipage	Precipitation (chemistry) Hugh Lee Pattinson Lead Cupellation Pan amalgamation Silver Parkes process Patio process White lead Liquefaction Eutectic Silver Metallurgical processes Lead
Link from a Wikipage to an external page	https://archive.today/20020814011115/http:/www.wsharvey.dial.pipex.com/leadandlabour/chapter11.htm https://books.google.com/books%3Fid=I2mg2ine4AEC&pg=PA368&lpg=PA368&dq=Pattinson+process&source=bl&ots=bSekYMK0RZ&sig=lufxXRq2E_eGwGGR0Vku91e-qmo&hl=sv&sa=X&ved=0ahUKEwjaqJy1rKrOAhVBWCwKHS6jBMQQ6AEIUDAH%23v=onepage&q=Pattinson%20process&f=false https://web.archive.org/web/20051122021612/http:/luminet.net/~wenonah/hydro/pb.htm
sameAs	Pattison's Process Pattison's Process Pattison's Process Pattison's Process
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thumbnail	wiki-commons:Special:FilePath/Pattinson_process_Lead_pots_arrangement.png?width=300
has abstract	Pattinson's Process, or pattinsonisation is a method for removing silver from lead discovered by Hugh Lee Pattinson in 1829 and patented in 1833. The process is dependent on the fact that lead which has least silver in it solidifies first on liquefaction, leaving the remaining liquid richer in silver. In practice several crystallisations were required, so Pattinson's equipment consisted basically of nothing more complex than a row of up to 13 iron pots, which were heated from below. Some lead, naturally containing a small percentage of silver, was loaded into the central pot and melted. This was then allowed to cool. As the lead solidified it was removed using large perforated iron ladles and moved to the next pot in one direction, and the remaining metal which was now richer in silver was then transferred to the next pot in the opposite direction. The process was repeated from one pot to the next, the lead accumulating in the pot at one end and metal enriched in silver in the pot at the other. * Sections of a pot * Arrangement of pots used in a smelting mill The level of enrichment possible is limited by the lead-silver eutectic and typically the silver content of the silver-rich melt could not be raised above 2% (around 600 to 700 ounces per ton), so further separation is carried out by cupellation. The process was economic for lead containing at least 250 grams of silver per ton. Being the first process applicable to low-grade lead, it supplemented earlier patio process and pan amalgamation. It has been replaced by the Parkes process in the mid-19th century. (en)
gold:hypernym	Method
prov:wasDerivedFrom	wikipedia-en:Pattison's_Process?oldid=1058369762&ns=0
page length (characters) of wiki page	3159 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Pattison's_Process
is Link from a Wikipage to another Wikipage of	Betterton–Kroll process Parkes process Desilverising Pattison Process
is Wikipage redirect of	Desilverising Pattison Process
is foaf:primaryTopic of	wikipedia-en:Pattison's_Process

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