JPS5722107A - Preparation of phosphoric acid by wet method - Google Patents

Preparation of phosphoric acid by wet method

Info

Publication number
JPS5722107A
JPS5722107A JP9795880A JP9795880A JPS5722107A JP S5722107 A JPS5722107 A JP S5722107A JP 9795880 A JP9795880 A JP 9795880A JP 9795880 A JP9795880 A JP 9795880A JP S5722107 A JPS5722107 A JP S5722107A
Authority
JP
Japan
Prior art keywords
sulfuric acid
solution
ore
separated
concentration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9795880A
Other languages
Japanese (ja)
Other versions
JPS6016367B2 (en
Inventor
Koichi Hanabatake
Kenji Yasuda
Keiji Hirano
Tsutomu Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP9795880A priority Critical patent/JPS6016367B2/en
Publication of JPS5722107A publication Critical patent/JPS5722107A/en
Publication of JPS6016367B2 publication Critical patent/JPS6016367B2/en
Expired legal-status Critical Current

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  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PURPOSE: To remove magnesium in phosphorus ore efficiently, and to obtain high- quality phosphoric acid, by adding conc. sulfuric acid to a washed solution which is obtained by cleaning phosphorus ore with a solution of sulfuric acid in such a way that the concentration of sulfuric acid is made in a specific range, so that magnesium sulfate is precipitated.
CONSTITUTION: Phosphorus ore is cleaned with a solution of sulfuric acid with a concentration ≥30wt%, magnesium component contained in the ore as impurities is eluted selectively while suppressing eluation of phosphorus component, and the resulting material is separated into the purified ore and the washed solution. Conc. sulfuric acid is added to the washed solution so that the concentration of sulfuric acid of the separated washed solution is made 50W70wt%, the precipitate consisting essentially of magnesium sulfate is made to separate out, and the precipitated solid substance is separated from the solution of sulfuric acid. The separated solution of sulfuric acid is used as sulfuric acid for decomposing the above-mentioned purified ore, or utilized as sulfuric acid for cleaning the above-mentioned phosphorus ore. As mentioned above, the utilization of the solubility characteristics of MgO in the solution of sulfuric acid provides high-quality phosphoric acid.
COPYRIGHT: (C)1982,JPO&Japio
JP9795880A 1980-07-16 1980-07-16 Wet phosphoric acid manufacturing method Expired JPS6016367B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9795880A JPS6016367B2 (en) 1980-07-16 1980-07-16 Wet phosphoric acid manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9795880A JPS6016367B2 (en) 1980-07-16 1980-07-16 Wet phosphoric acid manufacturing method

Publications (2)

Publication Number Publication Date
JPS5722107A true JPS5722107A (en) 1982-02-05
JPS6016367B2 JPS6016367B2 (en) 1985-04-25

Family

ID=14206170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9795880A Expired JPS6016367B2 (en) 1980-07-16 1980-07-16 Wet phosphoric acid manufacturing method

Country Status (1)

Country Link
JP (1) JPS6016367B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150346U (en) * 1985-03-08 1986-09-17
CN103539170A (en) * 2013-11-06 2014-01-29 吴杰 Method for producing magnesium sulfate and industrial-grade monoammonium phosphate by using tail solution from refining of wet process phosphoric acid by solvent extraction method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6353759A (en) * 1986-08-22 1988-03-08 Hitachi Vlsi Eng Corp Memory device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61150346U (en) * 1985-03-08 1986-09-17
CN103539170A (en) * 2013-11-06 2014-01-29 吴杰 Method for producing magnesium sulfate and industrial-grade monoammonium phosphate by using tail solution from refining of wet process phosphoric acid by solvent extraction method

Also Published As

Publication number Publication date
JPS6016367B2 (en) 1985-04-25

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