SU504746A1 - The method of obtaining granulated double superphosphate - Google Patents
The method of obtaining granulated double superphosphateInfo
- Publication number
- SU504746A1 SU504746A1 SU1959020A SU1959020A SU504746A1 SU 504746 A1 SU504746 A1 SU 504746A1 SU 1959020 A SU1959020 A SU 1959020A SU 1959020 A SU1959020 A SU 1959020A SU 504746 A1 SU504746 A1 SU 504746A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- decomposition
- double superphosphate
- phosphate
- obtaining granulated
- granulated double
- Prior art date
Links
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- Fertilizers (AREA)
Description
(54) СПОСОБ ПОЛУЧЕНИЯ ГРАНУЛИРОВАННОГО ДВОЙНОГО(54) METHOD FOR OBTAINING GRANULATED DOUBLE
СУПЕРФОСФАТАSUPERPHOSPHATE
1one
Изобретение отиоснтс к области получени минеральных удобреннй, в частности двойного суперфосфата, примен емого дл непосредственного внесени в почву или в качестве одного из комнонентов дл получени сложносмешанных удобрений.The invention relates to the field of obtaining mineral fertilizers, in particular double superphosphate, used for direct application to the soil or as one of the components for the preparation of complex mixed fertilizers.
Известен способ получени гранулированного двойного суперфосфата путем обработки фосфатного сырь неупаренпой фосфорной кислотой при температуре 50-95°С до степени разложени 40-60% с последующим доразложением полученной пульны при 125- 600°С в распылительной сушилке, гранулированием и сушкой полученных гранул.A method of producing granulated double superphosphate is known by treating phosphate raw materials with unheated phosphoric acid at a temperature of 50-95 ° C to a decomposition level of 40-60%, followed by decomposition of the pulverized mixture obtained at 125-600 ° C in a spray dryer, granulating and drying the obtained granules.
Однако по такому способу получени гранулированного двойного суперфосфата низкий коэффициент разложени фосфорита в готовом продукте (78-80%) и необходимо примен ть фосфорит более тонкого помола, остаток на сите 0,063 мм не 20%.However, according to this method of obtaining granulated double superphosphate, the low decomposition rate of phosphate in the finished product (78-80%) and it is necessary to use more phosphate grinding, the residue on the sieve 0.063 mm is not 20%.
С целью устранени указанных недостатков предлагаетс обработку фосфатного сырь вести смесью циркул ционной пульпы, фосфорной и серной кислот, вз тых в соотношении 80-100:25:1, до степени разложени 50- 70%.In order to eliminate the above disadvantages, it is proposed to treat the phosphate raw material with a mixture of circulating pulp, phosphoric and sulfuric acids, taken in a ratio of 80-100: 25: 1, to a decomposition level of 50-70%.
Указанное отличие позвол ет увеличить коэффициент разложени фосфорита в готовомThis difference makes it possible to increase the decomposition rate of phosphate in the finished
продукте и исиользовать фосфорит более круппого помола.product and use phosphorite for more grinding.
Пример. На разложенне бедут 100 г фосфорита с содержанием 28,5% PzOs, тониной помола 60,6% остатка на сите с диаметром отверстий 0,063 мм, 288 г фосфорной кислоты (29%-на концентраци ), 7г сериой кислоты концентрацией 92,5% и 1442 г циркул ционной иульпы. После взаимодействи комнонентов в реакционной колбе в течение 1 час получают пульпу с разложением фосфорита 70,4%. После высушивани , гранул ции и сушки полученных гранул получают продукт с разложением готового продукта 96%. Состав готового продукта, % :Example. 100 g of phosphorite containing 28.5% of PzOs, fine grinding of 60.6% of the residue on a sieve with a hole diameter of 0.063 mm, 288 g of phosphoric acid (29% concentration), 7g of seric acid with a concentration of 92.5% and 1442 g of circulatory After interaction of the components in the reaction flask for 1 hour, pulp is obtained with a decomposition of phosphate 70.4%. After drying, granulating and drying the resulting granules, a product is obtained with a decomposition of the finished product of 96%. The composition of the finished product,%:
PaOs общ.46,51PaOs total.46,51
PsOs уев.46,12PsOs uv.46,12
Р2О5 водн.45,55P2O5 water.45,55
РаОз своб.8,49RaOZF.8,49
ПгО6,69PgO6,69
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1959020A SU504746A1 (en) | 1973-08-24 | 1973-08-24 | The method of obtaining granulated double superphosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1959020A SU504746A1 (en) | 1973-08-24 | 1973-08-24 | The method of obtaining granulated double superphosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU504746A1 true SU504746A1 (en) | 1976-02-28 |
Family
ID=20564419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1959020A SU504746A1 (en) | 1973-08-24 | 1973-08-24 | The method of obtaining granulated double superphosphate |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU504746A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077454C (en) * | 1997-06-06 | 2002-01-09 | 武汉化工学院 | Technology of activating carbon-fluorine apatite to remove toxic metal ions from waste water |
-
1973
- 1973-08-24 SU SU1959020A patent/SU504746A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077454C (en) * | 1997-06-06 | 2002-01-09 | 武汉化工学院 | Technology of activating carbon-fluorine apatite to remove toxic metal ions from waste water |
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