RO92111B1 - Process for separating and purifying strontium nitrate from phosphatic rocks - Google Patents
Process for separating and purifying strontium nitrate from phosphatic rocksInfo
- 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
Links
Landscapes
- Fertilizers (AREA)
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.
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) |
-
1985
- 1985-07-25 RO RO119662A patent/RO92111B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
RO92111A2 (en) | 1987-07-30 |
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