Ntau cov khoom muaj nqis thiab cov khoom siv tsis yog xim tuaj yeem tsis tsuas yog nyob hauv ntuj tsim, tab sis kuj los ntawm cov khoom siv hauv cov khoom siv hauv xov tooj cua. Tau kawg, cov txiaj ntsig zoo ntawm cov kub uas tau los ntawm cov xov tooj cua yog cov me me, tab sis nws yuav zoo txaus rau kev ua cov hniav nyiaj hniav kub yooj yim. Tab sis ua ntej nws yog qhov tsim nyog yuav tau muab cov kub no tshem tawm los ntawm cov khoom siv raw.
Nws yog qhov tsim nyog
- - tshooj xov tooj cua uas muaj kub;
- - hydrochloric, sulfuric thiab nitric acids;
- - txhuas;
- - hlau.
Cov Lus Qhia
Kauj ruam 1
Siv cov hau kev uas tau piav qhia hauv qab no tsuas yog koj txiav txim siab los ua lag luam thiab, ntawm kev cai lij choj zoo nkauj, koom rau hauv kev sau thiab thawj ua cov khoom pov tseg cov hlau tsis zoo. Ua ntej pib ua haujlwm rau cov kev rub tawm ntawm kub los ntawm cov xov tooj cua, paub koj tus kheej nrog cov kev cai tswj hwm txoj haujlwm uas tau hais tseg. Txwv tsis pub, koj cov kev ua yuav ua rau muaj kev sib ceg nrog txoj cai.
Kauj ruam 2
Xaiv cov xov tooj cua los ntawm qhov chaw uas koj yuav rau kuv kub. Hauv qee qhov ntawm seem, cov hlau no muaj qhov qhib siab, hauv lwm tus nws tau muab zais hauv qab lub cev tooj liab. Yeej, cov khoom muaj nqi zoo nkauj, suav nrog cov kub, muaj nyob hauv cov xov tooj cua tsim khoom hauv tsev, tsim cov khoom rov qab rau hauv lub sijhawm Soviet. Piv txwv, kub muaj nyob hauv qee hom microcircuits, diodes, transistors, relays. Cov ncauj lus kom ntxaws muaj nyob hauv cov ntawv tshaj tawm tshwj xeeb hauv xov tooj cua engineering.
Kauj ruam 3
Xaiv ib txoj hauv kev rau kev rho tawm kub los ntawm cov xov tooj cua-technical. Kev xaiv yuav loj nyob ntawm seb tus nqi ntawm cov hlau muaj nuj nqi hauv qhov tshwj xeeb, reagents ntawm koj pov tseg, thiab lub sijhawm ntawm koj pov tseg. Txoj kev siv tau yooj yim thiab dav dav yog cov nyob ntawm kev siv cov tshuaj mercury thiab cyanides.
Kauj ruam 4
Thaum siv cov txheej txheem electrolytic, tshem tawm cov kub plating los ntawm tooj dag lossis tooj liab qhov ntawm cov xov tooj cua los ntawm kev tsis sib haum hauv hydrochloric lossis sulfuric acid. Siv cov hlau lead lossis hlau los ua anode. Ua kom cov kua qaub acid tsim nyog rau kev tawm tsam hauv 15-25 degrees. Qhov kawg ntawm kev cais tawm yog txiav txim siab los ntawm poob hauv lub zog tam sim no.
Kauj ruam 5
Rau qhov txheej txheem thib ob ntawm kev rho tawm kub, npaj 1000 ml ntawm sulfuric acid nrog qhov ceev ntawm 1.8 g / cc. cm thiab 250 ml ntawm hydrochloric acid nrog qhov ceev ntawm 1, 19 g / cc. saib Ua kom sov qhov sib xyaw kom haum li ntawm 60 degrees. Tom qab ntawd txhuam cov xov tooj cua hauv cov khoom sib xyaw thiab ntxiv me ntsis npaj cov kua roj nitric acid (ntawm tus nqi ntawm 1 feem ntawm lub ntim ntawm nitric acid rau 3 ntu ntawm hydrochloric acid). Nitric acid yog qhov tsim nyog rau kev tsim ntawm aqua regia, uas yog cov kuab tshuaj rau kub. Saib xyuas kev tiv thaiv kev nyab xeeb nruj tshaj plaws thaum kov cov kua qaub.
