Kev sib piv ntawm kev tsim khoom rau thoob ntiaj teb tus qauv phosphating kev daws teeb meem rau electrothermal tube electroplating:

Kev sib piv ntawm kev tsim khoom rau thoob ntiaj teb tus qauv phosphating kev daws teeb meem rau electrothermal tube electroplating:

1.85% phosphoric acid (kua) ntxiv rau 68% nitric acid (kua) ntxiv rau 99.7% zinc oxide (hmoov)

Cov tshuaj tiv thaiv kab mob sib npaug yog:

Zinc oxide ntxiv nitric acid → zinc nitrate ntxiv rau dej (1)

Zinc oxide ntxiv phosphoric acid → zinc phosphate ntxiv dej (2)

Zinc dihydrogen phosphate ntxiv dej (3)

2.85% phosphoric acid (kua) ntxiv rau 68% nitric acid (kua) ntxiv rau 99.99% zinc ingot (hlau)

Cov tshuaj tiv thaiv kab mob sib npaug yog:

Zinc oxide ntxiv nitric acid → zinc nitrate ntxiv rau dej (1)

Zinc ingot ntxiv phosphoric acid → zinc dihydrogen phosphate ntxiv rau dej (2)

Raws li cov tshuaj tiv thaiv sib npaug ntawm ob txoj kev tsim khoom, nws tuaj yeem xaus lus tias:

A. Phosphoric acid tsis muaj zog acidic thiab tsawg reactive nrog zinc oxide los yog zinc ingots, yog li nws yuav tsum tau rhuab. Thaum siv zinc oxide ua raw khoom, cov khoom siv tsis raug (zinc phosphate) yuav tau txais. Siv zinc ingots li raw khoom yuav tsis tsim cov khoom xyaw tsis raug.

B. Nitric acid muaj zog acidic, yog li cov tshuaj tiv thaiv zinc oxide yog tiav thiab exothermic cov tshuaj tiv thaiv, yog li tsis tas yuav cua sov. Thaum siv zinc ingots raws li cov khoom siv raw, yuav muaj cov tshuaj tiv thaiv tawg, thiab nws yuav ua rau cov khoom ntawm nitric acid puas thiab tsim cov pa roj av liab, yog li nws tsis tuaj yeem siv.

C. Txawm hais tias cov txheej txheem tsim khoom siv ob qho khoom ua tiav, zinc dihydrogen phosphate thiab zinc nitrate, yog qhov nyuaj, qhov zoo tuaj yeem lav tau. Ntxiv mus, cov khoom tiav tuaj yeem npaj tau raws li qhov xav tau sib txawv ntawm cov neeg siv khoom txhua lub sijhawm, yog li tsis tas yuav tsum tau npaj cov khoom tiav hauv lub neej txhua hnub, txo qhov kev siv ntawm lub tsev rau khoom.

2.85% phosphoric acid (kua) ntxiv rau 68% nitric acid (kua) ntxiv rau 99.99% zinc ingot (hlau)

A. Kev tsim cov zinc dihydrogen phosphate:

Ua ntej, ntxiv dej rau qhov chaw ruaj khov hauv lub tank sib tov, ua kom sov rau saum 90 degree, thiab ntxiv phosphoric acid kom sib npaug. Maj mam ntxiv cov zinc ingot rau hauv lub tank stirring thiab hnov ​​​​mob nrog cov tshuaj phosphoric acid kom txog thaum nws pom meej meej. (Ceeb Toom: Cov cua kub tsis tu ncua yog tsim nyog thaum lub sij hawm cov txheej txheem tshuaj tiv thaiv)

B. Manufacturing zinc nitrate:

Ua ntej, ntxiv dej rau qhov chaw ruaj khov hauv lub tank sib tov, tom qab ntawd ntxiv nitric acid thiab do sib npaug. Maj mam ntxiv zinc oxide rau hauv lub tank stirring thiab hnov ​​​​mob nrog nitric acid tov kom txog thaum nws pom tseeb.

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