CN1266828A - Super triple superphosphate and its preparing process - Google Patents
Super triple superphosphate and its preparing process Download PDFInfo
- Publication number
- CN1266828A CN1266828A CN 00112769 CN00112769A CN1266828A CN 1266828 A CN1266828 A CN 1266828A CN 00112769 CN00112769 CN 00112769 CN 00112769 A CN00112769 A CN 00112769A CN 1266828 A CN1266828 A CN 1266828A
- Authority
- CN
- China
- Prior art keywords
- caso
- mixed solution
- phosphoric acid
- triple superphosphate
- calcium
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/04—Double-superphosphate; Triple-superphosphate; Other fertilisers based essentially on monocalcium phosphate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
A super triple superphosphate contains 2CaHPO4.2H2O (60-65 wt.%), CaSO4 (12-16 wt.%), water-soluble calcium salt (8-10 wt.%) and Si (the rest), and is prepared through hydrolyzing phosphorus and calcium ore powder, reaction with sulfuric acid or phosphoric acid, filtering, mixing the filtrate with phosphoric acid, reaction with oxynitride while stirring and constant-temp drying. Its advantages are short production period, high efficiency and low energy consumption.
Description
That the present invention relates to is a kind of effective P that contains
2O
555～65%, the super triple superphosphate of water-soluble Ca salt 8～10% and production method thereof.
" double superhosphate " that present Japan in the world, the U.S., Poland, hungry Luo Si, Czech produce is P effectively
2O
5Content is up to 52.8%.The disclosed bibliographical information of Czech, double superhosphate are that usefulness accounts for the sulfuric acid of total acid content 2.30～4.89% and 95.0～97.0% phosphorolytic cleavage Rock Phosphate (72Min BPL) is prepared from.Production technique is that single slurry solidifies the slaking of banking up.Adopt this method fully not react, can not improve the content of available phosphorus, the curing time of banking up is long, and the production cycle is long, and efficient is low.Double superhosphate, main phosphoric acid calcium and sulfur acid calcium not.Because it is sulfur acid calcium not, extremely bad to happiness sulphur crop such as potato, beans material crop, cruciate flower material crop effect.Double superhosphate can not improve the P in the soil
2O
5, farm crop have been used selection, and the scope of application is wideless.Production cycle is long, and energy consumption is big, and efficient is low.
In view of above reason, the objective of the invention is for a kind of effective P is provided
2O
5Content reaches 55～65%, the fertilizer efficiency height of water-soluble Ca salt 8～10%, the super triple superphosphate that use range is wide.Another object of the present invention is in order to provide a kind of with short production cycle, efficient height, the production method of the super triple superphosphate that energy consumption is low.
The object of the present invention is achieved like this:
Super triple superphosphate of the present invention, this super triple superphosphate contains following component by weight percentage:
2CaHPO
4·2H
2O??????????????????????60～65％
CaSO
4???????????????????????????????12～16％
Water-soluble Ca salt 8～10%
The material surplus that contains Si
The production method of above-mentioned super triple superphosphate, its step is as follows:
1), hydrolysis phosphorus, calcium breeze:
80～100 ℃ hot water inflow is contained 20～40% organic P
2O
5Phosphorus, calcium breeze in stir, add catalyzer manganese, hydrochloric acid in the time of stirring, its proportioning (weight ratio) is: ground phosphate rock: calcium sulfate: water: manganese: hydrochloric acid=100: 5: 125: 0.01: 0.10, phosphorus, calcium breeze are hydrolyzed became the liquid slurry;
2), with the liquid slurry reaction after to hydrolysis of sulfuric acid, phosphoric acid, its proportioning (weight ratio): liquid slurry: phosphoric acid: sulfuric acid=100: 10～12: 22～25, CaHPO
42H
2O, CaSO
4, slag mixed solution slurry, fluorine gas F discharges recovery;
3), with 2) in CaHPO
42H
2O, CaSO
4, slag mixed solution slurry filtering separation, isolate 2CaHPO
42H
2O, CaSO
4Mixed solution, the slag of discharge is produced normal superphosphate;
4), with 2CaHPO
42H
2O, CaSO
4Mixed solution mixes and calcium hydroxide reaction with phosphoric acid, wherein by weight: mixed solution: phosphoric acid: calcium hydroxide=4: 3～3.5: 1, stirred at least 30 minutes, reaction slurry is heated at least 80 ℃, drying just must contain effective P under the constant temperature
2O
5Content reaches 55～65%, the super triple superphosphate of water-soluble Ca salt 8～10%.
Compare effective P in the super triple superphosphate of the present invention with existing double superhosphate
2O
5Height can reach 65%, water-soluble P
2O
5Can reach 56.2%, contain CaSO
410%, water-soluble Ca salt can reach 8～10%, the fertilizer efficiency height, and use range is wide.Do not bank up during curing step in the super triple superphosphate production method of the present invention, so with short production cycle, the efficient height, energy consumption is low.
Introduce embodiments of the invention below:
Embodiment 1:
Embodiment of the invention super triple superphosphate contains following component by weight percentage:
2CaHPO
4·2H
2O??????????????????????60％
CaSO
4???????????????????????????????10％
Water-soluble Ca salt 10%
The material surplus that contains Si
Present embodiment production method step is as follows:
1), hydrolysis phosphorus, calcium breeze:
With temperature is that water about 90 ℃ is poured phosphorous 26～40% ground phosphate rock, CaSO into
4In stir, add manganese powder and hydrochloric acid simultaneously, wherein by weight: ground phosphate rock: CaSO
4: water: manganese: hydrochloric acid=100: 5: 125: 0.01: 0.10, get the liquid slurry;
2), with the liquid slurry reaction after to hydrolysis of sulfuric acid, phosphoric acid, the percentage concentration of sulfuric acid, phosphoric acid is 95%, wherein by weight: liquid slurry: phosphoric acid: sulfuric acid=100: 11: 23, when adding acid, constantly stir, stirred about 30 minutes, have this moment fluorine gas to discharge, allow fluorine gas feed in the water and become hydrofluoric acid (HF), get CaHPO
42H
2O, CaSO
4, slag mixed solution slurry;
3), with 2CaHPO
42H
2O, CaSO
4Slag mixed solution slurry filtering separation is isolated 2CaHPO
42H
2O, CaSO
4The liquid slurry, the slag of discharge is produced normal superphosphate;
4), with 2CaHPO
42H
2O, CaSO
4Mixed solution mixes and calcium hydroxide reaction with phosphoric acid, wherein by weight: mixed solution: phosphoric acid: calcium hydroxide=4: 3: 1, stirred 30 minutes, reaction slurry is heated to 80 ℃, constant temperature is dry down.Contain 2CaHPO in the dry thing this moment
42H
2O (CaHPO
4) be about 65%, CaSO
4Be about 15%, water-soluble Ca salt about 8%, water-soluble P in this dry thing
2O
5Be about 56～60% effective, P
2O
5Content reaches 60～65%.
Table 1 is the super triple superphosphate of the present invention's production and the comparison sheet of double superhosphate.
Table 1:
| Title | Effective P 2O 5 | Water-soluble P 2O 5 | The heaped measure curing time | Contain water insoluble thing | Water-soluble Ca salt |
| Double superhosphate | ????52.8％ | ????48.2％ | 3～5 days | ????47.2％ | Do not have |
| Super triple superphosphate | ????64.2％ | ????56.2％ | Do not bank up | Contain CaSO 410％ | ??8～10％ |
Claims (2)
1, super triple superphosphate, this super triple superphosphate contains following component by weight percentage:
2CaHPO
4·2H
2O????????????60～65％
CaSO
4?????????????????????12～16％
Water-soluble Ca salt 8～10%
The material surplus that contains Si
2, the production method of super triple superphosphate according to claim 1 comprises the steps:
1), hydrolysis phosphorus, calcium breeze:
80～100 ℃ hot water inflow is contained 20～40% organic P
2O
5Phosphorus, calcium breeze in stir, add catalyzer manganese, hydrochloric acid in the time of stirring, its proportioning (weight ratio) is: ground phosphate rock: calcium sulfate: water: manganese: hydrochloric acid=100: 5: 125: 0.01: 0.10, phosphorus, calcium breeze are hydrolyzed became the liquid slurry;
2), with the liquid slurry reaction after to hydrolysis of sulfuric acid, phosphoric acid, its proportioning (weight ratio): liquid slurry: phosphoric acid: sulfuric acid=100: 10～12: 22～25, CaHPO
42H
2O, CaSO
4Slag mixed solution slurry, fluorine gas F discharges recovery;
3), with 2) in contain CaHPO
42H
2O, CaSO
4Mixed solution slurry filtering separation is isolated 2CaHPO
42H
2O, CaSO
4Mixed solution, the slag of discharge is produced normal superphosphate;
4), with 2CaHPO
42H
2O, CaSO
4Mixed solution mixes and calcium hydroxide reaction with phosphoric acid; Wherein by weight: mixed solution: phosphoric acid: calcium hydroxide=4: 3～3.5: 1, stirred at least 30 minutes, reaction slurry is heated at least 80 ℃, freeze-day with constant temperature promptly gets super triple superphosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112769 CN1117711C (en) | 2000-03-17 | 2000-03-17 | Super triple superphosphate and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112769 CN1117711C (en) | 2000-03-17 | 2000-03-17 | Super triple superphosphate and its preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1266828A true CN1266828A (en) | 2000-09-20 |
| CN1117711C CN1117711C (en) | 2003-08-13 |
Family
ID=4582607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00112769 Expired - Fee Related CN1117711C (en) | 2000-03-17 | 2000-03-17 | Super triple superphosphate and its preparing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1117711C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355681A (en) * | 2014-10-27 | 2015-02-18 | 云南富民瑞呈饲料添加剂有限公司 | Method for producing triple superphosphate by employing fertilizer-grade dicalcium phosphate as raw material |
-
2000
- 2000-03-17 CN CN 00112769 patent/CN1117711C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355681A (en) * | 2014-10-27 | 2015-02-18 | 云南富民瑞呈饲料添加剂有限公司 | Method for producing triple superphosphate by employing fertilizer-grade dicalcium phosphate as raw material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1117711C (en) | 2003-08-13 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |