Fabrication of boric acid and sodium sulfate from borax

被引：0

作者：

Mergen, A ^{[1
]}

Demirhan, MH ^{[1
]}

Bilen, M ^{[1
]}

机构：

[1] Eti Holding AS, Dept Res & Dev, Ankara, Turkey

来源：

CFI-CERAMIC FORUM INTERNATIONAL | 2004年 / 81卷 / 03期

关键词：

boric acid; borax; sodium sulfate; crystallization;

D O I：

暂无

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Boric acid production was made from borax solutions with concentrations of 183 and 245 g/l B2O3. Sodium sulfate was recovered as a by-product during boric acid fabrication. 183 g/l B2O3 was the optimum concentration for the boric acid production. Boric acid production yield and boric acid purity were around 91% and 96,7% respectively for the concentration value of 183 g/l B2O3. Boric acid fabrication can be carefully controlled by measuring the pH of the borax and boric acid solutions. Reaction times of between 5 and 90 min during boric acid production from borax solution of 183 g/l B2O3 did not have significant impact on the boric acid production yield and boric acid purity. Rafinated boric acid and sodium sulfate crystals had purities of over 99%. Rafinated boric acid and sodium sulfate crystals were characterised using X-ray diffraction (XRD), differential thermal and thermogravimetric analysis (DTA-TG) and scanning electron microscopy (SEM).

引用

页码：E37 / E42

页数：6