SU242183A1 - METHOD OF OBTAINING DOUBLE SUPERPHOSPHATE - Google Patents
METHOD OF OBTAINING DOUBLE SUPERPHOSPHATEInfo
- Publication number
- SU242183A1 SU242183A1 SU1173308A SU1173308A SU242183A1 SU 242183 A1 SU242183 A1 SU 242183A1 SU 1173308 A SU1173308 A SU 1173308A SU 1173308 A SU1173308 A SU 1173308A SU 242183 A1 SU242183 A1 SU 242183A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- double superphosphate
- acid
- obtaining double
- concentration
- raw material
- Prior art date
Links
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 title description 4
- 239000002426 superphosphate Substances 0.000 title description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 7
- 239000010452 phosphate Substances 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N HF Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 108020000793 RHO Proteins 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- ZEFWRWWINDLIIV-UHFFFAOYSA-N tetrafluorosilane;dihydrofluoride Chemical compound F.F.F[Si](F)(F)F ZEFWRWWINDLIIV-UHFFFAOYSA-N 0.000 description 1
Description
Изобретение относитс к области получени двойного суперфосфата путем разложени фосфатного сырь смесью кислот с последующим образованием готового продукта.The invention relates to the field of producing double superphosphate by decomposing a phosphate raw material with a mixture of acids, followed by the formation of the finished product.
Известен способ получени двойного суперфосфата , заключающийс в том, что исходное фосфатное сырье разлагают смесью фосфорной кислоты и оборотного маточного раствора, содержащего кремнефгористоводородную кислоту .A known method of producing double superphosphate is that the initial phosphate raw material is decomposed with a mixture of phosphoric acid and a circulating mother liquor containing hydrofluoric hydrochloric acid.
Предлагаемый способ отличаетс от известного тем, что фосфорную кислоту примен ют с 30-50%-ной концентрацией, а кремнефтористоводородную кислоту берут с 10-15%-ной концентрацией в количестве, превышающем содержание фтора в исходном фосфате.The proposed method differs from the known one in that phosphoric acid is used with a concentration of 30-50%, and fluorosilicic acid is taken with a concentration of 10-15% in an amount exceeding the fluorine content in the initial phosphate.
Это способствует интенсификации процесса и повышениЕО коэффициента разложени фосфатного сырь .This contributes to the intensification of the process and the increase in EO of the decomposition coefficient of phosphate raw materials.
Пример. 100 г апатитового концентрата обрабатываюткремнефтористоводороднойExample. 100 g of apatite concentrate are treated with hydrogen fluoride
кислотой I-LSiFo 30%-ной концентрации при комнатной температуре в течение 30 лшн. Расход кислоты составл ет 193 г из расчета 100% на HiSiFo, разложение сырь 99%. К полученной суспензии добавл ют фосфорную кислоту 30%-ной концентрации в количестве 113,3 г из расчета 110% ПаРО.1.Acid I-LSiFo 30% concentration at room temperature for 30 lshn. The acid consumption is 193 g at the rate of 100% on HiSiFo, the decomposition of the raw material is 99%. Phosphoric acid of 30% concentration in the amount of 113.3 g at the rate of 110% PaPO.1 is added to the obtained suspension.
Суспензию перемешиоают 5 мин сушат при температуре 160 С с последующей гранул цией полученного мелкодисперсного продукта . Выдел ющиес фтористые газы поглощают водой и кремнефтористоводородную кислоту возвращают в процесс.The suspension is stirred for 5 minutes and dried at a temperature of 160 ° C, followed by granulation of the obtained fine product. The released fluorine gases absorb water and hydrofluoric acid is returned to the process.
Состав продукта, %:The composition of the product, %:
РоОд (общее)52-59RhoD (total) 52-59
РоО,-, (усво емое)50-57Roo, -, (digestible) 50-57
Р-Юд (водорастворимое)49-56R-Yud (water soluble) 49-56
F3,5-1,5 Р205 (свободное)5-6F3.5-1.5 P205 (free) 5-6
Предмет изобретени Subject invention
Способ получени двойного суперфосфата путем разложени фосфатного сырь смесью фосфорной и кремнефтористоводородной кислоты с последующей сушкой полученной суспензии , отличающийс тем, что, с целью 1нтенсификацип процесса и повышени коэффициента разложени фосфатного сырь , фосфорную кислоту примен ю с 30-50%-ной концентрацией , а крелшефтористоводородную кислоту берут с 10-50%-ной концентрацией в количестве , превышающем содержание фтора в исходном фосфате.A method of producing double superphosphate by decomposing a phosphate raw material with a mixture of phosphoric and hydrofluoric acid followed by drying the resulting suspension, characterized in that, in order to increase the decomposition rate of the phosphate raw material, phosphoric acid is used with 30-50% concentration the acid is taken with a 10-50% concentration in an amount exceeding the fluorine content in the initial phosphate.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU242183A1 true SU242183A1 (en) |
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