1. Kev sib cais ntawm nitric acid kom rho tawm kub qhov kev sib cais ntawm nitric acid yuav siv tau, concentrated nitric acid rau hauv beakers, yuav tsum tau rho kub rau hauv cov hlau mus rau hauv beakers. Lub Beaker ces muab tso rau ntawm lub beaker tuav thiab rhuab nrog ib tug cawv teeb los tsim flaky kub.
2. Aqua regia sib cais ntxiv rau kev rho tawm kub, kev sib cais aqua regia yog siv. Tom qab sib tov ib feem ntawm nitric acid thiab peb qhov chaw hydrochloric acid rau hauv aqua regia, cov hlau uas yuav tsum tau muab rho tawm tau muab tso rau hauv aqua regia thiab lim tom qab cov tshuaj tiv thaiv hlau dhau lawm. Nws yog tom qab ntawd rhuab thiab thaum kawg hloov nrog cov nplooj ntawv tooj liab, uas tuaj yeem muab rho tawm los ntawm kub.
3. Txoj kev sib cais H2SO4 sib tov H2SO4 thiab H2O4 hauv qhov sib piv ntawm ib mus rau ib qho, tom qab ntawd muab cov cuab yeej siv los ua kom zoo dua rau hauv H2O4 tov, thiab tos kom txog thaum kawg ntawm cov tshuaj tiv thaiv hlau, cov khoom daj xim yog kub.
Cov ntaub ntawv nyoos ntawm kev rho tawm kub yav dhau los cov ntaub ntawv raw ntawm kev rho tawm kub feem ntau yog los ntawm kub ore, kub-cov kabmob ore mined los ntawm kub mines, uas kuj muaj lwm yam khoom muaj nqi. Raws li peb txhua tus paub, kub yog siv dav hauv cov khoom siv hluav taws xob, cov hniav nyiaj hniav kub, roj teeb, cov yeeb yaj kiab kho mob, xov hlau, thiab lwm yam. Yog li tam sim no hluav taws xob pov tseg, cov hniav nyiaj hniav kub pov tseg kuj tuaj yeem ua kom zoo nkauj kub thiab lwm yam hlau zoo nkauj. Kub refining yog tus txheej txheem ntawm tshem tawm impurities los ntawm bullion los yog alloyed kub nyob rau hauv batch kom pab tau cov khoom kub kom tau raws li cov kev cai ntawm kub trading qauv.
Thaum ua hmoov lossis flakes, siv tau Hasung hlau hmoov ua tshuab thiab hlau flakes ua tshuab rau kub refining lub hom phiaj. Tom qab refining tiav lawm, siv Hasung kub bar casting tshuab kom tau ci kub tuav.
Post lub sij hawm: Aug-28-2023
