RO92111B1 - Process for separating and purifying strontium nitrate from phosphatic rocks - Google Patents

Process for separating and purifying strontium nitrate from phosphatic rocks

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Publication number
RO92111B1
RO92111B1 RO119662A RO11966285A RO92111B1 RO 92111 B1 RO92111 B1 RO 92111B1 RO 119662 A RO119662 A RO 119662A RO 11966285 A RO11966285 A RO 11966285A RO 92111 B1 RO92111 B1 RO 92111B1
Authority
RO
Romania
Prior art keywords
strontium nitrate
separating
purifying
nitrophosphate
technologies
Prior art date
Application number
RO119662A
Other languages
Romanian (ro)
Other versions
RO92111A2 (en
Inventor
Ion Romulus Scorei
Mihai Tomsa
Vilma Scorei
Original Assignee
CENTRALA INDUSTRIALA DE îNGRASAMINTE CHIMICE
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 CENTRALA INDUSTRIALA DE îNGRASAMINTE CHIMICE filed Critical CENTRALA INDUSTRIALA DE îNGRASAMINTE CHIMICE
Priority to RO119662A priority Critical patent/RO92111B1/en
Publication of RO92111A2 publication Critical patent/RO92111A2/en
Publication of RO92111B1 publication Critical patent/RO92111B1/en

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Abstract

Inventia se refera la un procedeu de separare si purificare a azotatului de strontiu din rocile fosfatice prin prelucrarea sedimentului de la faza de decantare steril, a tehnologiilor de obtinere a nitrofosfatilor. Procedeul, conform inventiei, foloseste recristalizarea în acid azotic 58% a suspensiei de azotat de strontiu, prin evaporarea solutiilor apoase de azotat de strontiu, la presiune scazuta si degazarea la 250 grade C cu aer a acidului azotic rezidual din cristale de azotat de strontiuastfel purificat. Procedeul, conform inventiei, poate fi grefat pe tehnologiile de fabricare a îngrasamintelor chimice complexe nitrofosfatice fara a perturba procesul tehnologic.The invention relates to a process for separating and purifying strontium nitrate from the phosphate rocks by processing the sediment from the sterile settling stage of the nitrophosphate obtaining technologies. The process according to the invention uses recrystallization in 58% nitric acid of strontium nitrate slurry by evaporation of aqueous strontium nitrate solutions at low pressure and degassing with air of residual nitric acid of strontium nitrate crystals purified . The process according to the invention can be grafted on the technologies of manufacture of complex nitrophosphate complex fertilizers without disturbing the technological process.

RO119662A 1985-07-25 1985-07-25 Process for separating and purifying strontium nitrate from phosphatic rocks RO92111B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO119662A RO92111B1 (en) 1985-07-25 1985-07-25 Process for separating and purifying strontium nitrate from phosphatic rocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO119662A RO92111B1 (en) 1985-07-25 1985-07-25 Process for separating and purifying strontium nitrate from phosphatic rocks

Publications (2)

Publication Number Publication Date
RO92111A2 RO92111A2 (en) 1987-07-30
RO92111B1 true RO92111B1 (en) 1987-07-31

Family

ID=20117707

Family Applications (1)

Application Number Title Priority Date Filing Date
RO119662A RO92111B1 (en) 1985-07-25 1985-07-25 Process for separating and purifying strontium nitrate from phosphatic rocks

Country Status (1)

Country Link
RO (1) RO92111B1 (en)

Also Published As

Publication number Publication date
RO92111A2 (en) 1987-07-30

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