SU556109A1 - The method of producing phosphoric acid - Google Patents
The method of producing phosphoric acidInfo
- Publication number
- SU556109A1 SU556109A1 SU2162754A SU2162754A SU556109A1 SU 556109 A1 SU556109 A1 SU 556109A1 SU 2162754 A SU2162754 A SU 2162754A SU 2162754 A SU2162754 A SU 2162754A SU 556109 A1 SU556109 A1 SU 556109A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phosphoric acid
- decomposition
- recirculating
- pulp
- producing phosphoric
- Prior art date
Links
Landscapes
- Paper (AREA)
Description
Пример. В реактор объемом 85 м- загружают 32,7 т/ час р довой руды Каратау с содержанием 24% Р205 и 25,6 т/час 93%-ной серной кислоты. Сюда же подают 70,3 т/час оборотной фосфорной кислоты. Разложение фосфорита провод т при температуре 105°С, соотношении твердой и жидкой фаз в пульпе, равном 1:2, концентрации Р2О5 и избыточного 5Оз в жидкой фазе пульпы, равных соответственно 26% и 1,5%. В эту же зону рециркулируют пульиу, содержащую твердую фазу, котора состоит на 40% из кристаллов сульфата кальци с размером 30-60 мк и па 20% из кристаллов 60-80 мк. Далее часть рециркулирующей пульпы выдерживают в зоне кристаллизации , имеющей объем 200 м в течение 2,5 час при 90°С и концентрации избыточной 5Оз 3%, после чего пульиу фильтруют.Example. The reactor with a volume of 85 m is loaded with 32.7 t / h of Karatau common ore with a content of 24% P205 and 25.6 t / h of 93% sulfuric acid. This also serves 70.3 t / h of circulating phosphoric acid. The decomposition of phosphorus is carried out at a temperature of 105 ° C, a ratio of solid and liquid phases in the pulp equal to 1: 2, a concentration of P2O5 and an excess of 5 Oz in the liquid phase of the pulp, respectively 26% and 1.5%. Puliu containing a solid phase, which consists of 40% of calcium sulfate crystals with a size of 30-60 microns and 20% of crystals of 60-80 microns, is recycled to the same zone. Next, part of the recirculating pulp is kept in the crystallization zone, which has a volume of 200 m for 2.5 hours at 90 ° C and a concentration of excess OO 3%, after which the pulium is filtered.
Съем с 1 м рабочей поверхности фильтра составл ет 400 кг РзОб/час.The removal of 1 m of the filter working surface is 400 kg RUR / hour.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2162754A SU556109A1 (en) | 1975-08-04 | 1975-08-04 | The method of producing phosphoric acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2162754A SU556109A1 (en) | 1975-08-04 | 1975-08-04 | The method of producing phosphoric acid |
Publications (1)
Publication Number | Publication Date |
---|---|
SU556109A1 true SU556109A1 (en) | 1977-04-30 |
Family
ID=20628688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2162754A SU556109A1 (en) | 1975-08-04 | 1975-08-04 | The method of producing phosphoric acid |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU556109A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995029871A1 (en) * | 1994-04-29 | 1995-11-09 | Aktsionernoe Obschestvo Zakrytogo Tipa 'ostim' | Method of obtaining phosphoric acid |
-
1975
- 1975-08-04 SU SU2162754A patent/SU556109A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995029871A1 (en) * | 1994-04-29 | 1995-11-09 | Aktsionernoe Obschestvo Zakrytogo Tipa 'ostim' | Method of obtaining phosphoric acid |
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