SU588217A1 - Method of preparing double superphosphate - Google Patents
Method of preparing double superphosphateInfo
- Publication number
- SU588217A1 SU588217A1 SU742022731A SU2022731A SU588217A1 SU 588217 A1 SU588217 A1 SU 588217A1 SU 742022731 A SU742022731 A SU 742022731A SU 2022731 A SU2022731 A SU 2022731A SU 588217 A1 SU588217 A1 SU 588217A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phosphoric acid
- raw materials
- phosphate raw
- weak
- suspension formed
- Prior art date
Links
Landscapes
- Luminescent Compositions (AREA)
Description
(54) СПОСОБ ПОЛУЧЕНИЯ ДВОЙНОГО СУПЕРФОСФАТА(54) METHOD FOR OBTAINING DOUBLE SUPERPHOSPHATE
НИИ смешивают в двухвалыюм шнеке - смесителе с 136,5 в. ч. суспензии II, полученной обработкой при 70°С в течение 30 мин 40 в. ч. фосфорита 97,3 в. ч. экстракционной фосфорной кислоты (35% PaOs) в реакторе № II. Образуюшийс гранул т сушат в барабанной нечи и получают 245 в. ч. двойного гранулированного суперфосфата, содержашего 46% РгОб общ. и 44,3% PgOs уев. (/Сразл. 85%). Среднестатистическа прочность гранул продукта 22,0 кг/см.Research institutes are mixed in a two-shaft auger-mixer from 136.5 in. including suspension II, obtained by treatment at 70 ° C for 30 min 40 in. including phosphate 97.3 in. including extraction phosphoric acid (35% PaOs) in reactor No. II. The resulting granules are dried in a drum chain and 245 volts is obtained. including double granular superphosphate containing 46% PgObs total. and 44.3% PgOs yy. (/ Sraz. 85%). The average strength of product granules is 22.0 kg / cm.
Пример 2. В реактор № I подают 50 в. ч. кингисеппского флотокопцентрата (28% PjOs) и 142 в. ч. экстракционной фосфорной кислоты (30% Р2О5). Массу перемешивают в течение 90 мин при 60°С. Фосфорит при этом разлагаетс на 40% и образуетс 190,5 в. ч. суспензии I, которую направл ют в распылительную сушилку, где в результате контакта с топочными газами (/ газов 550-120°С), получают 128 в. ч. полупродукта с влажностью 6%, содержащего 44% Р2О5 общ. и 42,3% PsOs уев. (степень разложени 84%). Последний смешивают в двухвальном шнеке - смесителе с 147,3 в. ч. суспензии II, полученной обработкой при 95°С в течение 30 мин 50 в. ч. фосфорита 98,8 в. ч. фосфорной кислоты (43% Р2О5) в реакторе № II. Образующийс гранул т сущат в барабанной печи и получают 243 в. ч. двойного гранулированного сунерфосфата, содержащего 46,1% PgOs общ. и 44,5% PaOs уев.Example 2. In reactor No. I serves 50 in. h. Kingisepp flotation concentrate (28% PjOs) and 142 in. including extraction phosphoric acid (30% P2O5). The mass is stirred for 90 min at 60 ° C. In this case, phosphorite decomposes by 40% and forms 190.5 volts. including suspension I, which is sent to a spray dryer, where 128 volts are obtained by contact with flue gases (550-120 ° C gases). including intermediate with a moisture content of 6%, containing 44% P2O5 total. and 42.3% PsOs yy. (degree of decomposition 84%). The latter is mixed in a two-shaft auger-mixer with 147.3 in. including suspension II, obtained by treatment at 95 ° C for 30 min 50 in. including phosphate 98.8 c. including phosphoric acid (43% P2O5) in the reactor number II. The resulting granulate is formed in a drum furnace and 243 c is obtained. including dual granular sonerphosphate containing 46.1% PgOs total. and 44.5% PaOs yy.
(разл. 86%). Среднестатистическа прочность гранул продукта 26 кг/см.(var. 86%). The average strength of product granules is 26 kg / cm.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU742022731A SU588217A1 (en) | 1974-05-12 | 1974-05-12 | Method of preparing double superphosphate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU742022731A SU588217A1 (en) | 1974-05-12 | 1974-05-12 | Method of preparing double superphosphate |
Publications (1)
Publication Number | Publication Date |
---|---|
SU588217A1 true SU588217A1 (en) | 1978-01-15 |
Family
ID=20584078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU742022731A SU588217A1 (en) | 1974-05-12 | 1974-05-12 | Method of preparing double superphosphate |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU588217A1 (en) |
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1974
- 1974-05-12 SU SU742022731A patent/SU588217A1/en active
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