Qanacsan
Hoggaamiyaha (Pb) waa bir jilicsan, ductile iyo malleable ee miiska xilliyeed ee ku jira dabeecadda.
Xagee laga keenay?
Inta badan birahaan waxaa lagu qodo dhulka hoostiisa. Si kastaba ha ahaatee, tani kuma jirto xaaladdeeda aasaasiga ah, sidaa darteed waxaa jira in ka badan 60 biro oo ku jiri kara macdanta `` lead '', laakiin waxaa jira saddex birood oo keliya oo loo isticmaalo soo saaridda macdanta `` lead '': galena, cerussite iyo anglesite. Ugu dambayntii, waxaa muhiim ah in la xuso in isticmaalka ugu weyn ee macdanta `` lead '' ay tahay soo saaridda baytariyada dib loo isticmaali karo.
Macdanta laga helo macdanta macdanta `` lead '' waa galena, halkaas oo laga helo sulfide leedh. Haddaba, macdantaani waxay ka kooban tahay 85% leedh inta kalena waa baaruud. Waxaa jira kaydka galena ee Jarmalka, Mexico, Mareykanka, Spain iyo Australia.
Foornooyinka waxaa loo adeegsadaa in laga soo saaro macdanta `` galena '', halkaasoo macdanta laga nuugo oo oksaydhka la yareeyo ilaa qaybta sulfide ee rasaasta loo rogo oksaydhka leedhka iyo sulfate.
Haddii macdanta `` leed '' la mariyo foornada iyadoo la raacayo habkan, dhowr sun ayaa la sii daayaa: bismuth, arsenic, cadmium, copper, silver, gold and zinc. Ka dib markii la helay culeys la shubay oo ku jira foorno heleysa magaca foornada reverberatory oo leh hawo, baaruud iyo uumi, kuwani waxay maareeyaan in ay qayilaan biraha marka laga reebo dahabka, lacagta iyo bismuth. Inta kale ee wasakhaysan ee sida sabarka u sabaynaysa ayaa laga saarayaa hawsha.
Waxa intaa dheer:
- Saliidda xaggee laga soo saaraa?
- Halkee laga helaa aluminium?
- Xaggee birta laga soo saaraa?
- Halkee laga soo saaraa naxaasta?
- Dahabka xaggee laga helaa?
Sifaynta rasaasta
Pine, lime, xanthate iyo saliid alum ayaa guud ahaan la isticmaalaa. Dhagaxa dhagaxa ama birta ayaa loo adeegsadaa habka dubista. Tani waxay hagaajinaysaa habka dubista.
Dib -u -warshadaynta
Si kastaba ha ahaatee, dhammaan macdanta `` lead '' kama timaaddo macdanta. Kaliya 50% helitaanka leedhka ayaa halkaas laga soo qaatay; kan kale 50% wuxuu ka yimaadaa dib -u -warshadaynta baaburta baabuurta (baytariyada).
