CN101935254A - Multi-element compound diammonium phosphate and production method and system thereof - Google Patents
Multi-element compound diammonium phosphate and production method and system thereof Download PDFInfo
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- CN101935254A CN101935254A CN2010102610136A CN201010261013A CN101935254A CN 101935254 A CN101935254 A CN 101935254A CN 2010102610136 A CN2010102610136 A CN 2010102610136A CN 201010261013 A CN201010261013 A CN 201010261013A CN 101935254 A CN101935254 A CN 101935254A
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Abstract
The invention discloses a production method of multi-element compound diammonium phosphate, which comprises the following steps of: mixing ammonia and concentrated phosphoric acid in a preneutralization device to obtain a solution with diammonium phosphate; heating elementary sulphur with hot vapor to melt the elementary sulphur; delivering the solution, ammonia, nutritive salt and molten elementary sulphur into a pelletizer in an preset order for carrying out the palletizing operation on the nutritive salt, the solution, ammonia and molten elementary sulphur to form a multi-element compound diammonium phosphate combination; and drying and screening the multi-element compound diammonium phosphate combination by using a dryer and a classifier to obtain multi-element compound diammonium phosphate. The invention also provides a production system of multi-element compound diammonium phosphate and the multi-element compound diammonium phosphate.
Description
Technical field:
The present invention relates to diammonium phosphate and make field, particularly a kind of multielement compound phosphoric acid two ammonium manufacture method and system and multielement compound phosphoric acid two ammoniums.
Background technology:
Diammonium phosphate is a kind of readily avaiable fertilizer of high density, is applicable to various crops and soil, is specially adapted to the crop that nitrophilous needs phosphorus, make base manure or topdress all can, suitable deep placement.
Yet existing diammonium phosphate is very easily loss at short notice after being applied to soil, and for example, the approach of loss has drip washing, gas loss and fixing.So,, do not have weight element and trace element, cause farm crop can not obtain competent nutrient, and then cause the quality of agricultural product of farm crop output and output to reduce because existing diammonium phosphate composition is single.
Summary of the invention:
In view of this, be necessary to provide a kind of multielement compound phosphoric acid two ammonium manufacture method that contain multiple components and long-term multielement compound phosphoric acid two ammoniums of fertilizer efficiency that are used to make.
Also be necessary to provide a kind of multielement compound phosphoric acid two ammonium manufacturing systems that contain multiple components and long-term multielement compound phosphoric acid two ammoniums of fertilizer efficiency that are used to make.
Also be necessary to provide a kind of multiple components and long-term multielement compound phosphoric acid two ammoniums of fertilizer efficiency of containing.
A kind of multielement compound phosphoric acid two ammonium manufacture method may further comprise the steps:
In the pre-neutralization device, ammonia is mixed with strong phosphoric acid, to obtain to comprise the slurries of diammonium phosphate;
Utilize hot steam that elemental sulfur is heated, so that the elemental sulfur fusing;
According to predefined procedure slurries, ammonia, nutritive salt and fused elemental sulfur are transported in the tablets press, to utilize tablets press nutritive salt, slurries, ammonia, fused elemental sulfur are carried out the granulation operation, and form multielement compound phosphoric acid two ammonium molectrons;
Utilize moisture eliminator, sifter that multielement compound phosphoric acid two ammonium molectrons are carried out drying and screening, to obtain multielement compound phosphoric acid two ammoniums.
A kind of multielement compound phosphoric acid two ammonium manufacturing systems, it comprises ammonia jar, strong phosphoric acid jar, molten sulfur generator, piston pump, pre-neutralization device, shurry pump, tablets press, moisture eliminator and sifter; The molten sulfur generator is used to utilize hot steam that elemental sulfur is heated, so that the elemental sulfur fusing; Piston pump is used for the fused elemental sulfur is transported in the tablets press; The ammonia that the pre-neutralization device is used for that the ammonia jar is provided mixes with the strong phosphoric acid that the strong phosphoric acid jar provides to obtain to comprise the slurries of diammonium phosphate; Shurry pump is used for slurries are transported in the tablets press; Tablets press is used for slurries, nutritive salt, ammonia, fused elemental sulfur are carried out the granulation operation, and forms multielement compound phosphoric acid two ammonium molectrons; Moisture eliminator is used for multifunction nutritive type diammonium phosphate molectron is carried out drying; Sifter is used for dried multielement compound phosphoric acid two ammonium molectrons are screened, to obtain multielement compound phosphoric acid two ammoniums.
A kind of multielement compound phosphoric acid two ammoniums comprise fertile slug particle, are wrapped in the lip-deep elemental sulfur slow release layer of fertile slug particle.The component of fertile slug particle comprises nutritive salt and diammonium phosphate.
Multielement compound phosphoric acid two ammoniums that utilize above-mentioned multielement compound phosphoric acid two ammonium manufacture method and system to produce comprise fertile slug particle, fertile slug particle nutrient progressively is released, fertilizer efficiency release along with multielement compound phosphoric acid two ammoniums, farm crop can fully absorb the various elements in the fertilizer, and then avoid environment is polluted, simultaneously, because farm crop can obtain competent nutrient in multielement compound phosphoric acid two ammonium decomposition coursees, make that farm crop can the higher agricultural-food of output quality.
Description of drawings:
Accompanying drawing 1 is the organigram of the multielement compound phosphoric acid two ammonium manufacturing systems of a better embodiment
Accompanying drawing 2 is structural representations of multielement compound phosphoric acid two ammoniums of a better embodiment
Accompanying drawing 3 is organigrams of the multielement compound phosphoric acid two ammonium manufacturing systems of another better embodiment
Accompanying drawing 4 is structural representations of multielement compound phosphoric acid two ammoniums of another better embodiment
Accompanying drawing 5 is multielement compound phosphoric acid two ammonium manufacture method schemas of a better embodiment
Among the figure: multielement compound phosphoric acid two ammonium manufacturing systems 10; belt feeder 11; molten sulfur generator 12; sulphur melting tank 121; sulphur collector 122; piston pump 13; ammonia jar 14; strong phosphoric acid jar 15; pre-neutralization device 16; shurry pump 17; tablets press 18; moisture eliminator 19; sifter 100; crusher 101; multielement compound phosphoric acid two ammoniums 20; fertile slug particle 21; elemental sulfur slow release layer 22; multielement compound phosphoric acid two ammoniums 30; fertile slug particle 31; elemental sulfur slow release layer 32; diammonium phosphate integument 33; multielement compound phosphoric acid two ammonium manufacture method step S602～S608
Embodiment:
Please referring to Fig. 1 and Fig. 2, multielement compound phosphoric acid two ammonium manufacturing systems 10 comprise molten sulfur generator 12, piston pump 13, ammonia jar 14, strong phosphoric acid jar 15, pre-neutralization device 16, shurry pump 17, tablets press 18, moisture eliminator 19, sifter 100 and crusher 101.
Pre-neutralization device 16 is connected with ammonia jar 14, strong phosphoric acid jar 15 and shurry pump 17, and the ammonia that is used for that ammonia jar 14 is provided mixes with the strong phosphoric acid that strong phosphoric acid jar 15 provides to obtain to comprise the slurries of diammonium phosphate.
Shurry pump 17 is used for slurries are transported in the tablets press 18 with Sprayable.
Tablets press 18 is used for slurries, ammonia, nutritive salt and elemental sulfur are carried out the granulation operation, and forms multielement compound phosphoric acid two ammonium molectrons.In the present embodiment; tablets press 18 is the drum-type tablets press; this nutritive salt can be for containing ammonium salt, vitriol, the nitrate of elements such as potassium, calcium, magnesium, sulphur, zinc; for example; this nutritive salt is the ammonium salt that contains elements such as potassium, calcium, magnesium, sulphur, zinc, for the vitriol that contains elements such as potassium, calcium, magnesium, sulphur, zinc, for containing the nitrate of elements such as potassium, calcium, magnesium, sulphur, zinc, perhaps for containing the ammonium salt of elements such as potassium, calcium, magnesium, sulphur, zinc, the mixture of vitriol.This nutritive salt is added in the slurries in the pre-neutralization device 16, and the slurries that this shurry pump 17 will be mixed with nutritive salt are transported in the tablets press 18 with Sprayable; Can control piston pump 13; the sequencing of shurry pump 17 feed realizes producing multielement compound phosphoric acid two ammoniums of different structure; for example; produce multielement compound phosphoric acid two ammoniums 20 as shown in Figure 2; these multielement compound phosphoric acid two ammoniums 20 comprise fertile slug particle 21; be wrapped in fertile slug particle 21 lip-deep elemental sulfur slow release layers 22; the slurries that control shurry pump 17 will be mixed with nutritive salt are transported in the tablets press 18 with Sprayable; and an ammonia injector is set in tablets press 18; this ammonia injector is used to spray ammonia; be mixed with after the slurries of nutritive salt and ammonia granulation produce fertile slug particle 21 tablets press 18 utilization; control piston pump 13 is transported to the fused elemental sulfur in the tablets press 18 with Sprayable, forms elemental sulfur slow release layer 22 thereby make fertile slug particle 21 surfaces go up.
Molten sulfur generator 12 is used to utilize hot steam that elemental sulfur is heated, so that the elemental sulfur fusing.Wherein, molten sulfur generator 12 comprises sulphur melting tank 121 and sulphur collector 122.Be connected with hot steam in the sulphur melting tank 121, after elemental sulfur added in the sulphur melting tank 121, the hot steam in the sulphur melting tank 121 melted elemental sulfur.Sulphur collector 122 is collected the elemental sulfur of fusing in the sulphur melting tank 121, also continues to feed hot steam simultaneously in sulphur collector 122, to keep the molten state of elemental sulfur.
Piston pump 13 is connected with sulphur collector 122, tablets press 18, is used for sulphur collector 122 fused elemental sulfurs are transported in the tablets press 18 with Sprayable.
Moisture eliminator 19 is used for multielement compound phosphoric acid two ammonium molectrons are carried out drying.
Sifter 100 is used for to screening through exsiccant multielement compound phosphoric acid two ammonium molectrons, to obtain multielement compound phosphoric acid two ammoniums 20.The multielement compound phosphoric acid that meets the product size standard two ammoniums 20 that sifter 100 filters out are as finished product packing; sifter 100 flows to crusher 101 with the size that filters out greater than multielement compound phosphoric acid two ammoniums of product size standard, and sifter 100 flows to tablets press 18 granulation again with the size that filters out less than multielement compound phosphoric acid two ammoniums of product size standard.In the present embodiment, the product size standard is that multielement compound phosphoric acid two ammonium particulate diameters are 1 to 4mm.
Crusher 101 is used for the multielement compound phosphoric acid two ammonium fragmentations of size greater than the product size standard, and multielement compound phosphoric acid two ammoniums after the fragmentation are flowed to sifter 100 screens again.
Utilize above-mentioned multielement compound phosphoric acid two ammonium manufacturing systems 10 multielement compound phosphoric acid two ammoniums that do not meet the product size standard can be transported to tablets press 18 once more as returning charge and carry out granulation, and multielement compound phosphoric acid two ammoniums 20 that produce comprise fertile slug particle 21, are wrapped in the elemental sulfur slow release layer 22 on the fertile slug particle 21.Because on the surface of the fertile slug particle 21 of elemental sulfur slow release layer 22 parcels, when elemental sulfur slow release layer 22 is converted to sulfate radical by the bacterium in the soil, fertile slug particle 21 nutrients just can progressively be released, along with the fertilizer efficiency of multielement compound phosphoric acid two ammoniums slowly discharges, farm crop can fully absorb the various elements in multielement compound phosphoric acid two ammoniums, and then avoid environment is polluted, simultaneously, because farm crop can obtain competent nutrient in the slowly-releasing process of multielement compound phosphoric acid two ammoniums, make farm crop can the output quality higher, the agricultural-food that output is higher.
In another better embodiment; please referring to Fig. 3 and Fig. 4; multielement compound phosphoric acid two ammonium manufacturing systems 10 also comprise belt feeder 11 except comprising molten sulfur generator 12, piston pump 13, ammonia jar 14, strong phosphoric acid jar 15, pre-neutralization device 16, shurry pump 17, tablets press 18, moisture eliminator 19, sifter 100 and crusher 101.Belt feeder 11 is connected with tablets press 18, sifter 100, and multielement compound phosphoric acid two ammoniums that are used for being transported to this nutritive salt in the tablets press 18 and will do not meet the product size standard are transported to tablets press 18 once more as returning charge.
When utilizing multielement compound phosphoric acid two ammoniums 30 that this multielement compound phosphoric acid two ammonium manufacturing systems 10 produce as shown in Figure 4, these multielement compound phosphoric acid two ammoniums 30 comprise fertile slug particle 31, elemental sulfur layer 32 and diammonium phosphate integument 33, the component of fertile slug particle 31 comprises nutritive salt, the surface of fertile slug particle 31 is successively by elemental sulfur layer 32, diammonium phosphate 33 integuments parcel, except passing through above-mentioned control piston pump 13, the sequencing of shurry pump 17 feed realizes producing multielement compound phosphoric acid two ammoniums 30, can also realize the production of multielement compound phosphoric acid two ammoniums 30 in the following way: the output port of the piston pump 13 charging port near tablets press 18 is provided with, the output port of shurry pump 17 is arranged on the medium position of tablets press 18, the ammonia injector is arranged in the tablets press 18 and leans on the into discharging port of tablets press 18, so, tablets press 18 is in rotary course, the nutritive salt of being carried by belt feeder 11 is at the fertile slug particle 21 of feed end interruption-forming of tablets press 18, the output port of piston pump 13 sprays the fused elemental sulfur, makes to form elemental sulfur layer 22 on the fertile slug particle surface; Along with the rotation of tablets press 18, when the fertile slug particle with elemental sulfur layer is transported to the medium position of tablets press 18, the slurry package that the output port of shurry pump 17 sprays be rolled in have the elemental sulfur layer fertile slug particle to form diammonium phosphate integument 23; The fertile slug particle 21 that is enclosed with diammonium phosphate integument 23, elemental sulfur layer 22 successively is transported to by the middle part from tablets press 18 process of discharge port of tablets press 18; the ammonia that ammonia injector sustained firing ammonia jar provides is to form multielement compound phosphoric acid two ammonium molectrons.100 pairs of multielement compound phosphoric acids of moisture eliminator 19 and sifter, two ammonium molectrons carry out drying and screening, to obtain multielement compound phosphoric acid two ammoniums 20.
Multielement compound phosphoric acid two ammoniums 30 that utilize above-mentioned multielement compound phosphoric acid two ammonium manufacturing systems 10 to produce comprise fertile slug particle 31, are wrapped in elemental sulfur slow release layer 32 and diammonium phosphate integument 33 on the fertile slug particle 31 successively.So, above-mentioned multielement compound phosphoric acid two ammoniums 30 are after being applied to soil, and diammonium phosphate integument 33 is liberating nitrogen, phosphoric at first, for crop absorption.Fertile slug particle 31 by elemental sulfur slow release layer 32 parcels remains in the soil, when elemental sulfur slow release layer 32 is converted to sulfate radical by the bacterium in the soil, the ammonium salt that contains metallic elements such as potassium, calcium, magnesium, sulphur, zinc, vitriol and nitrate nutrient in the fertile slug particle 31 discharge, with the sustainable supply crop absorption.Along with the fertilizer efficiency of slow-release compound fertilizer 30 slowly discharges, farm crop can fully absorb the various elements in multielement compound phosphoric acid two ammoniums, and then avoid environment is polluted, simultaneously, because farm crop can obtain competent nutrient in the slowly-releasing process of multielement compound phosphoric acid two ammoniums 30, make that farm crop can the higher agricultural-food of output quality.
The multielement compound phosphoric acid two ammonium manufacture method schemas of a better embodiment as shown in Figure 5.These multielement compound phosphoric acid two ammonium manufacture method may further comprise the steps:
Step S602 mixes ammonia and strong phosphoric acid, the nutritive salt that contains trace elements such as potassium, calcium, magnesium, sulphur, zinc in the pre-neutralization device and the slurries that comprise diammonium phosphate (or nutritive medium) that obtain.
Step S604 utilizes hot steam that elemental sulfur is heated, so that the elemental sulfur fusing.
Step S606; according to predefined procedure slurries (or nutritive medium), fused elemental sulfur, ammonia and nutritive salt are transported in the tablets press; operate to utilize tablets press that nutritive salt, slurries, ammonia, fused elemental sulfur are carried out granulation, and form multielement compound phosphoric acid two ammonium molectrons.This nutritive salt can be for containing ammonium salt, vitriol, the nitrate of metallic elements such as potassium, calcium, magnesium, sulphur, zinc, for example this nutritive salt be the ammonium salt that contains metallic elements such as potassium, calcium, magnesium, sulphur, zinc, for the vitriol that contains metallic elements such as potassium, calcium, magnesium, sulphur, zinc, for containing the nitrate of metallic elements such as potassium, calcium, magnesium, sulphur, zinc, perhaps for containing the ammonium salt of metallic elements such as potassium, calcium, magnesium, sulphur, zinc, the mixture of vitriol.In the present embodiment, step S606 concrete steps are: utilize belt feeder that nutritive salt is added in the tablets press, to form fertile slug particle; Utilize piston pump that the fused elemental sulfur is transported in the tablets press with Sprayable, so that the fused elemental sulfur is sprayed on the surface of fertile slug particle and forms the elemental sulfur slow release layer; Utilize shurry pump that slurries are transported in the tablets press with Sprayable, so that slurries are sprayed on the elemental sulfur slow release layer that has wrapped up fertile slug particle; Utilization is arranged on the interior ammonia injector of tablets press to being sprayed ammonia by the fertile slug particle of elemental sulfur slow release layer and slurries parcel, to form multielement compound phosphoric acid two ammonium molectrons.
Step S608 utilizes moisture eliminator, sifter that multielement compound phosphoric acid two ammonium molectrons are carried out drying and screening, to obtain multielement compound phosphoric acid two ammoniums.
In other embodiments, the concrete steps of step S606 also can be: will be added in by the mixture that ammonium salt, vitriol, nitrate and calcium sulfate salt are formed in the slurries in the pre-neutralization device; The slurries that utilize shurry pump will be mixed with nutritive salt are transported in the tablets press with Sprayable and utilize the ammonia injector that is arranged in the tablets press to spray ammonia, to form fertile slug particle; Utilize piston pump that the fused elemental sulfur is transported in the tablets press with Sprayable,, and form multielement compound phosphoric acid two ammonium molectrons so that the fused elemental sulfur is sprayed on the surface of fertile slug particle.
The multifunction nutritive type diammonium phosphate of utilizing above-mentioned multielement compound phosphoric acid two ammonium manufacture method to produce comprises fertile slug particle, is wrapped in the elemental sulfur slow release layer on the fertile slug particle.Because the elemental sulfur slow release layer wraps up on the surface of fertile slug particle, when the elemental sulfur slow release layer is converted to sulfate radical by the bacterium in the soil, fertile slug particle nutrient just can progressively be released, along with the fertilizer efficiency of multielement compound phosphoric acid two ammoniums slowly discharges, farm crop can fully absorb the various elements in multielement compound phosphoric acid two ammoniums, and then avoid environment is polluted, simultaneously, because farm crop can obtain competent potassium in the slowly-releasing process of multielement compound phosphoric acid two ammoniums, calcium, magnesium, sulphur, metallic element and nitrogen such as zinc, nutrients such as phosphorus make that farm crop can the higher agricultural-food of output quality.Process test, the nitrogen element of above-mentioned multielement compound phosphoric acid two ammoniums are run off and are reduced 63%, save fertilizer amount 20%～30%, under the situation of rate of fertilizer application minimizing 25%, and increasing crop yield 8%～18%.
Claims (10)
1. multielement compound phosphoric acid two ammonium manufacture method may further comprise the steps:
In the pre-neutralization device, ammonia is mixed with strong phosphoric acid, to obtain to comprise the slurries of diammonium phosphate;
Utilize hot steam that elemental sulfur is heated, so that the elemental sulfur fusing;
According to predefined procedure slurries, ammonia, nutritive salt and fused elemental sulfur are transported in the tablets press, to utilize tablets press nutritive salt, slurries, ammonia, fused elemental sulfur are carried out the granulation operation, and form multielement compound phosphoric acid two ammonium molectrons;
Utilize moisture eliminator, sifter that multielement compound phosphoric acid two ammonium molectrons are carried out drying and screening, to obtain multielement compound phosphoric acid two ammoniums.
2. multielement compound phosphoric acid two ammonium manufacture method according to claim 1; it is characterized in that: slurries, ammonia, nutritive salt and fused elemental sulfur are transported in the tablets press according to predefined procedure; operate to utilize tablets press that nutritive salt, slurries, ammonia, fused elemental sulfur are carried out granulation, and the step of formation multielement compound phosphoric acid two ammonium molectrons is specially:
Utilize belt feeder that nutritive salt is added in the tablets press, to form fertile slug particle;
Utilize piston pump that the fused elemental sulfur is transported in the tablets press with Sprayable, so that the fused elemental sulfur is sprayed on the surface of fertile slug particle and forms the elemental sulfur slow release layer;
Utilization is arranged on the interior ammonia injector of tablets press to being sprayed ammonia by the fertile slug particle of elemental sulfur slow release layer and slurries parcel, to form multielement compound phosphoric acid two ammonium molectrons.
3. multielement compound phosphoric acid two ammonium manufacture method according to claim 1; it is characterized in that: slurries, ammonia, nutritive salt and fused elemental sulfur are transported in the tablets press according to predefined procedure; operate to utilize tablets press that nutritive salt, slurries, ammonia, fused elemental sulfur are carried out granulation, and the step of formation multielement compound phosphoric acid two ammonium molectrons is specially:
Nutritive salt is joined in the slurries in the pre-neutralization device;
The slurries that utilize shurry pump will be mixed with nutritive salt are transported in the tablets press with Sprayable and utilize the ammonia injector that is arranged in the tablets press to spray ammonia, to form fertile slug particle;
Utilize piston pump that the fused elemental sulfur is transported in the tablets press with Sprayable,, and form multielement compound phosphoric acid two ammonium molectrons so that the fused elemental sulfur is sprayed on the surface of fertile slug particle.
4. multielement compound phosphoric acid two ammonium manufacture method according to claim 1, it is characterized in that: this nutritive salt can be ammonium salt, vitriol, the nitrate of metallic elements such as containing potassium, calcium, magnesium, sulphur, zinc.
5. multielement compound phosphoric acid two ammonium manufacturing systems, it is characterized in that: these multielement compound phosphoric acid two ammonium manufacturing systems comprise ammonia jar, strong phosphoric acid jar, molten sulfur generator, piston pump, pre-neutralization device, shurry pump, tablets press, moisture eliminator and sifter; The molten sulfur generator is used to utilize hot steam that elemental sulfur is heated, so that the elemental sulfur fusing; Piston pump is used for the fused elemental sulfur is transported in the tablets press; The ammonia that the pre-neutralization device is used for that the ammonia jar is provided mixes with the strong phosphoric acid that the strong phosphoric acid jar provides to obtain to comprise the slurries of diammonium phosphate; Shurry pump is used for slurries are transported in the tablets press; Tablets press is used for slurries, ammonia, fused elemental sulfur and carries out granulation by nutritive salt and operate, and forms multielement compound phosphoric acid two ammonium molectrons; Moisture eliminator is used for multielement compound phosphoric acid two ammonium molectrons are carried out drying; Sifter is used for dried multielement compound phosphoric acid two ammonium molectrons are screened, to obtain multielement compound phosphoric acid two ammoniums.
6. multielement compound phosphoric acid two ammonium manufacturing systems according to claim 5, it is characterized in that: the molten sulfur generator comprises sulphur melting tank and sulphur collector; Be connected with hot steam in the sulphur melting tank, after elemental sulfur added in the sulphur melting tank, the hot steam in the sulphur melting tank melted elemental sulfur; The sulphur collector is collected the elemental sulfur that melts in the sulphur melting tank, also continues to feed hot steam simultaneously in the sulphur collector, to keep the molten state of elemental sulfur.
7. multielement compound phosphoric acid two ammonium manufacturing systems according to claim 5 is characterized in that: this nutritive salt joins in the slurries in the pre-neutralization device; The slurries that this shurry pump will be mixed with nutritive salt are transported in the tablets press with Sprayable.
8. multielement compound phosphoric acid two ammonium manufacturing systems according to claim 5, it is characterized in that: this nutritive salt can be ammonium salt, vitriol, the nitrate of metallic elements such as containing potassium, calcium, magnesium, sulphur, zinc.
9. multielement compound phosphoric acid two ammoniums, it is characterized in that: these multielement compound phosphoric acid two ammoniums comprise fertile slug particle, are wrapped in the lip-deep elemental sulfur slow release layer of fertile slug particle; The component of fertile slug particle comprises nutritive salt and diammonium phosphate.
10. multielement compound phosphoric acid two ammoniums according to claim 9 is characterized in that: this nutritive salt can be ammonium salt, vitriol, the nitrate of metallic elements such as containing potassium, calcium, magnesium, sulphur, zinc.
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Cited By (10)
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| CN103288525A (en) * | 2012-03-02 | 2013-09-11 | 宁夏鲁西化工化肥有限公司 | Sustained-release diammonium phosphate preparation method and system and sustained-release diammonium phosphate |
| CN103288523A (en) * | 2012-03-02 | 2013-09-11 | 宁夏鲁西化工化肥有限公司 | Preparation method of Meijiajia composite diammonium phosphate and Meijiajia Composite diammonium phosphate |
| CN103693999A (en) * | 2013-12-03 | 2014-04-02 | 宁夏鲁西化工化肥有限公司 | Diammonium phosphate fertilizer containing manganese |
| CN103708879A (en) * | 2013-12-11 | 2014-04-09 | 宁夏鲁西化工化肥有限公司 | Boron-containing diammonium phosphate fertilizer |
| CN103787723A (en) * | 2014-02-25 | 2014-05-14 | 宁夏鲁西化工化肥有限公司 | Preparation method of sulfur-zinc composite diammonium phosphate and sulfur-zinc composite diammonium phosphate |
| CN104788161A (en) * | 2015-04-17 | 2015-07-22 | 湖北富邦科技股份有限公司 | Method for producing fertilizer with high ammonium phosphate sulfate by adopting sulphur |
| CN104892061A (en) * | 2015-05-15 | 2015-09-09 | 云南云天化股份有限公司 | Preparation method for sulfur-containing phosphate fertilizer |
| CN106380255A (en) * | 2016-08-31 | 2017-02-08 | 瓮福达州化工有限责任公司 | Sulfur-containing diammonium phosphate production process and production device |
| CN106810321A (en) * | 2017-01-21 | 2017-06-09 | 云南三环中化化肥有限公司 | A kind of molten sulfur is added to the device and method of production sulfur-bearing phosphate fertilizer in gas phase |
| CN108727133A (en) * | 2018-06-13 | 2018-11-02 | 贵阳开磷化肥有限公司 | A kind of preparation method of salt-soda soil special complex fertilizer |
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| CN103288523A (en) * | 2012-03-02 | 2013-09-11 | 宁夏鲁西化工化肥有限公司 | Preparation method of Meijiajia composite diammonium phosphate and Meijiajia Composite diammonium phosphate |
| CN103693999A (en) * | 2013-12-03 | 2014-04-02 | 宁夏鲁西化工化肥有限公司 | Diammonium phosphate fertilizer containing manganese |
| CN103708879A (en) * | 2013-12-11 | 2014-04-09 | 宁夏鲁西化工化肥有限公司 | Boron-containing diammonium phosphate fertilizer |
| CN103787723A (en) * | 2014-02-25 | 2014-05-14 | 宁夏鲁西化工化肥有限公司 | Preparation method of sulfur-zinc composite diammonium phosphate and sulfur-zinc composite diammonium phosphate |
| CN104788161A (en) * | 2015-04-17 | 2015-07-22 | 湖北富邦科技股份有限公司 | Method for producing fertilizer with high ammonium phosphate sulfate by adopting sulphur |
| CN104892061A (en) * | 2015-05-15 | 2015-09-09 | 云南云天化股份有限公司 | Preparation method for sulfur-containing phosphate fertilizer |
| CN106380255A (en) * | 2016-08-31 | 2017-02-08 | 瓮福达州化工有限责任公司 | Sulfur-containing diammonium phosphate production process and production device |
| CN106810321A (en) * | 2017-01-21 | 2017-06-09 | 云南三环中化化肥有限公司 | A kind of molten sulfur is added to the device and method of production sulfur-bearing phosphate fertilizer in gas phase |
| CN108727133A (en) * | 2018-06-13 | 2018-11-02 | 贵阳开磷化肥有限公司 | A kind of preparation method of salt-soda soil special complex fertilizer |
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