METHOD OF PRODUCING OF MIXED ALUMINIUM PHOSPHATES AND ALKALINE METALS Russian patent published in 1994 - IPC

Abstract RU 2022920 C1

FIELD: building materials. SUBSTANCE: method involves treatment of nepheline with preliminary heated up to 70-105 C phosphoric acid at concentration 36-47% P2O5 and separation of insoluble residue. Treatment is carried out by continuous feeding of nepheline to acid at the rate 0.4-0.8 g/min per 1 mole P2O5. Method is used for phosphate binder components. EFFECT: increased degree of metal extraction, wt.-%: Al2O3 85.30; Na2O 88.9, and K2O 85.25.

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RU 2 022 920 C1

Authors

Zakharov V.I.

Matveev V.A.

Grigor'Eva R.A.

Makarov V.N.

Majorov D.V.

Dates

1994-11-15Published

1992-06-15Filed