1. Kev Txiav Txim Siab Sodium Hydroxide
Dhau li ntawm ob lub hlis, ob qhov kev rov ntsuam xyuas tau sib luag thaum soj ntsuam cov qauv rau cov neeg siv khoom.Qhov kev soj ntsuam ntawm cov qis dua Sodium Hydroxide cov ntsiab lus tau zoo ib yam, thaum qhov sib txawv ntawm ntau dua sodium hydroxide cov ntsiab lus nyob hauv ± 0.2g /L.Qhov tsawg kawg ntsuas cov ntaub ntawv yog cyanide tooj liab plating daws, qhov huab hwm coj ntau ntawm sodium hydroxide yog 1.4 g / L, cov ntaub ntawv siab tshaj plaws yog zincate zinc plating daws, qhov huab hwm coj ntawm sodium hydroxide yog 190.6 g / L.
2. Kev Txiav Txim Siab Carbonate
Nws kuj siv ob lub hlis los sim ob txoj hauv kev tib si. Qhov kev soj ntsuam tshwm sim ntawm sodium carbonate muaj qhov sib txawv ntawm±2g / L, uas tuaj yeem siv los ua cov lus qhia txog kev tsim khoom.Qhov qhov ntsuas tsawg kawg yog cov cyanide tooj liab plating daws, qhov huab hwm coj ntawm sodium carbonate yog 42.0 g / L, cov ntaub ntawv siab tshaj plaws yog cyanide nyiaj plating daws, qhov loj concentration ntawm potassium carbonate yog 91.1 g / L.
3. Xyuam xim
1) Them sai sai rau qhov nyiaj ntawm reagent ntxiv. Hauv kev txiav txim siab ntawm sodium hydroxide, pH ntawm Calcium Chloride thiab Barium Chloride muaj qhov cuam tshuam rau kev txiav txim siab ntawm sodium hydroxide. Ob qho kev daws teeb meem muaj pH tus nqi ntawm ib ncig 5.5, vim muaj kev sib xyaw ntawm cov tshuaj lom dej thiab cov dej yaj mus rau hauv cov pa roj carbon dioxide.Thaum txiav txim siab sodium hydroxide, tus nqi ntxiv yuav tsum tsis txhob ntau dhau kom zam dhau ntau dhau ntawm Calcium Chloride lossis Barium Chloride tov haus OH- tom qab precipitating carbonate, uas ua rau kev txiav txim siab qhov tshwm sim qis.
2) Them sai sai rau qhov zoo ntawm reagents. Qee qhov Calcium Chloride reagent, kev npaj daws tau me ntsis hauv lub teeb liab, pH hauv ntau dua 8, qhov yuav tsum tau lim thiab kho qhov pH, lim tawm impurities xws li hlau oxide.
3) Cov huab hwm coj loj ntawm kev npaj reagent.Qhov txheeb ze molecular phaus ntawm Calcium Chloride tsawg dua li ntawm Barium Chloride. Cov tshuaj Calcium Chloride nrog tib lub siab zoo li 100g / BaCl2·2H2O daws yog 46g / L anhydrous Calcium Chloride, 60g / L Calcium Chloride dihydrate thiab 90g / L Calcium Chloride hexahydrate. Raws li, 60g / L anhydrous Calcium Chloride lossis 90g / L hexahydrate Calcium Chloride raug pom zoo.
4) Kev kho dej phwj tuaj. Qee cov khoom tsom xam tsis tuaj yeem sib cais los ntawm Barium Chloride, tom qab siv los them sai sai rau kev kho mob ntawm cov dej phwj, kom ntev li ntawm kev sib xyaw ntxiv ntawm dilute sulfuric acid los yog sulfate los tsim Barium Sulfate yog non-toxic, tsev kho mob fluoroscopic Barium noj zaub mov sib piv tus neeg sawv cev yog barium sulfate, tuaj yeem nkag mus rau txoj hnyuv hauv plab, tsis muaj teeb meem rau tib neeg lub cev.Qhov barite hmoov siv rau hauv cov roj hauv thaj av los tswj cov tshuab tawg yog tseem barium sulfate, uas txhais tau tias nws yog ib puag ncig zoo.
4 Cov. Ckev cais tawm
1) Kev tsom xam ntawm sodium hydroxide nyob hauv kev daws teeb meem alkaline electroplating, Calcium Chloride tuaj yeem hloov Barium Chloride, xyuam xim rau cov nyiaj ntxiv; Hauv kev tsom xam ntawm Sodium Carbonate, nws yog qhov tsim nyog los nce qib ntawm neutralizing Calcium hydroxide nrog hydrochloric acid tom qab nag lossis daus.
2) mob siab rau qhov zoo ntawm Calcium Chloride, ua qhov kev ntxuav tsim nyog thiab kev kho kom haum.
3) raws li cov kev xav tau ntawm kev xaiv ntawm Barium Chloride lossis Calcium Chloride, yuav tsum siv Barium Chloride, los ua txoj haujlwm zoo ntawm cov dej phwj tuaj.
Sijhawm Post: Jan-27-2021