The dihydrate-hemihydrate phosphoric acid process can directly produce phosphoric acid with higher concentration,which is good energy-effi-cient,and the by-product hemihydrate gypsum comes with better quality.The test uses Jordanian phosphate rock as raw material and employs the di-hydrate-hemihydrate process to produce wet-process phosphoric acid.The effects of different process conditions on the dihydrate process and the hemihy-drate process are investigated,respectively,and the optimal process conditions are obtained to produce higher concentration of finished phosphoric acid and better quality hemihydrate gypsum,and improve the P2 O5recovery rate.
关键词
湿法磷酸/二水—半水法/再结晶流程/约旦磷矿
Key words
wet-process phosphoric acid/dihydrate-hemihydrate process/recrystallization process/Jordan phosphate rock
维普
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