Medium-temperature anti-corrosion fluoroaluminate flux and preparation method thereof
A technology for corroding fluoroaluminate and flux is applied in the field of medium-temperature anti-corrosion flux and its preparation, which can solve the problems of difficulty in realizing industrialization, scarcity of cesium resources, and high operating temperature, and achieves low price, shortened production process, Effects that resolve extraction difficulties
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Embodiment 1
[0054] Preparation of flux: Take 1 in Table 2 # The solution is the raw material solution, take 1000mL quantitatively, and weigh the quantitative AlCl separately 3 ﹒ 6H 2 Add O1081g and KF 126.11g to the raw material solution, and then add ionized water to dissolve it to make a solution. After the dissolution is complete, add 745mL of hydrofluoric acid solution dropwise, while stirring continuously to make the two fully react, and the flocculated slurry is filtered. , Washing and drying to get Rb 3 AlF 6 -RbAlF 4 -Cs 3 AlF 6 -K 3 AlF 6 New quaternary eutectic flux, then crushed and sieved to obtain 1 # sample. Control the mass ratio of RbF to 30.74wt.%, the mass ratio of KF to 20.66wt.%, AlF 3 The mass ratio is 40.85 wt.%, and the mass fraction of CsF is 6.88 wt.%.
Embodiment 2
[0056] Preparation of flux: Take 2 in Table 2 # The solution is the raw material solution, take 1000mL quantitatively, and weigh the quantitative AlCl separately 3 ﹒ 6H 2 Add O1563.45g, KF 194.55g, and CsF 585.55g to the raw material solution, then add ionized water to dissolve to make a solution. After the dissolution is completed, add 1014mL of hydrofluoric acid solution dropwise, while stirring continuously to make the two react fully , The flocculated slurry is filtered, washed and dried to obtain Rb 3 AlF 6 -CsAlF 4 -Cs 3 AlF 6 -K 3 AlF 6 New quaternary eutectic flux, then crushed and sieved to obtain 2 # sample. Control the mass ratio of CsF to 40wt.%, KF to 15wt.%, and RbF to 15wt.%, AlF 3 The mass ratio is 38.95wt.%.
Embodiment 3
[0058] Preparation of flux: Take 3 in Table 2 # The solution is the raw material solution, take 1000mL quantitatively, and then add LiF 12.5g, KF143g, CsF100g and AlCl 3 ﹒ 6H 2 O 1400g is heated and stirred to dissolve. When it is completely dissolved, slowly add 774mL of hydrofluoric acid while stirring continuously to make the two fully react. The flocculated slurry is filtered, washed and dried to obtain a new mixed fluoroaluminate flux. Then crush and sieving to obtain 3 # sample. Control the mass ratio of RbF to 24wt.%, CsF to 15.5wt.%, KF to 18.75wt.%, AlF 3 The mass ratio is 43 wt.%, the mass fraction of NaF is 0.5 wt.%, and the mass fraction of LiF is 1.5 wt.%. The preparation of fluoroaluminate by using lithium precipitation mother liquor greatly shortens the process flow and reduces the production cost to facilitate industrial production. The modified fluoroaluminate flux has stronger corrosion resistance.
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