ES405450A1 - Preparation of phosphoric acid by the wet process - Google Patents

Preparation of phosphoric acid by the wet process

Info

Publication number
ES405450A1
ES405450A1 ES405450A ES405450A ES405450A1 ES 405450 A1 ES405450 A1 ES 405450A1 ES 405450 A ES405450 A ES 405450A ES 405450 A ES405450 A ES 405450A ES 405450 A1 ES405450 A1 ES 405450A1
Authority
ES
Spain
Prior art keywords
phosphoric acid
preparation
wet process
attack
weight
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.)
Expired
Application number
ES405450A
Other languages
Spanish (es)
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Edison SpA
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 Montedison SpA, Montecatini Edison SpA filed Critical Montedison SpA
Publication of ES405450A1 publication Critical patent/ES405450A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Luminescent Compositions (AREA)
  • Fertilizers (AREA)

Abstract

Procedure to prepare phosphoric acid of a concentration of 31-35% by weight and calcium sulfate dihydrate, by sulfuric attack of the phosphorites at a temperature ranging from 72 to 82ºC, characterized in that the attack of the starting mineral is carried out using a mixture H2SO4 and (NH4) 2SO4, and keeping the weight ratio of H2O/P2 = 5 between 4 and 5.5. (Machine-translation by Google Translate, not legally binding)
ES405450A 1971-08-03 1972-08-02 Preparation of phosphoric acid by the wet process Expired ES405450A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2710571 1971-08-03

Publications (1)

Publication Number Publication Date
ES405450A1 true ES405450A1 (en) 1975-09-01

Family

ID=11220961

Family Applications (1)

Application Number Title Priority Date Filing Date
ES405450A Expired ES405450A1 (en) 1971-08-03 1972-08-02 Preparation of phosphoric acid by the wet process

Country Status (6)

Country Link
BE (1) BE787146A (en)
DE (1) DE2237711A1 (en)
ES (1) ES405450A1 (en)
FR (1) FR2148241B1 (en)
GB (1) GB1398331A (en)
NL (1) NL7210551A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101747107B (en) * 2009-12-17 2012-10-03 聊城鲁西化工第五化肥厂 Method for extracting phosphoric acid by soluble sulphate instead of part of sulfuric acid
CN101759166B (en) * 2009-12-31 2011-06-29 四川龙蟒钛业股份有限公司 Method for pre-treating phosphorite by using acidic waste water in the production process of titanium pigment
CN112758903B (en) * 2021-01-27 2023-01-31 金正大生态工程集团股份有限公司 Medium-low grade phosphorite pretreatment method

Also Published As

Publication number Publication date
BE787146A (en) 1973-02-05
NL7210551A (en) 1973-02-06
DE2237711A1 (en) 1973-02-15
GB1398331A (en) 1975-06-18
FR2148241A1 (en) 1973-03-11
FR2148241B1 (en) 1976-05-14

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