Cellulase as a new phosphate depressant in dolomite-phosphate flotation

• Autorzy: Yehia A. , Khalek M. A. , Ammar M.

Identyfikatory

DOI

10.5277/ppmp170232

• Języki publikacji: EN

Abstrakty

EN

Recently, many research efforts have been made to reduce the magnesium content in the phosphate concentrate to meet the requirement for phosphoric acid production and other applications. A bioprocessing technique is among these efforts. However, this paper was devoted to study the use of cellulase enzyme as a new phosphate depressant during fatty acid flotation of a calcareous phosphate rock. The flotation behavior of collophane and dolomite as single minerals using oleic acid as a collector and cellulase enzyme as the phosphate depressant was investigated in details. The results from single mineral flotation tests were discussed based on FTIR and zeta potential measurements to find out the mechanism of cellulase depression of phosphate. The findings from the single minerals tests were used to develop a selective flotation process for recovery of phosphate minerals from the natural phosphate ore. The flotation experiments were carried out to apply this new process using the calcareous phosphate ore. Under the optimum flotation conditions, 0.04% cellulase and 0.5 mM oleic acid, a phosphate concentrate containing 0.89% MgO with a P2O5 recovery of 75% was obtained from the phosphate ore containing 2.2% MgO.

Słowa kluczowe

EN

flotation; cellulose; cellophane; dolomite; oleic acid

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2017
• Tom: Vol. 53, iss. 2
• Strony: 1092--1104
• Opis fizyczny: Bibliogr. 41 poz., rys., tab.

Twórcy

autor

Yehia A.

• Central Metallurgical R&D Institute, P.O. Box 87, Helwan-El-Tibbin, El-Felezat Street, Cairo, Egypt

autor

Khalek M. A.

• Central Metallurgical R&D Institute, P.O. Box 87, Helwan-El-Tibbin, El-Felezat Street, Cairo, Egypt

autor

Ammar M.

• Central Metallurgical R&D Institute, P.O. Box 87, Helwan-El-Tibbin, El-Felezat Street, Cairo, Egypt

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