CN103304301A - Production method of controlled-release phosphorus potassium fertilizer - Google Patents
Production method of controlled-release phosphorus potassium fertilizer Download PDFInfo
- Publication number
- CN103304301A CN103304301A CN2013102780395A CN201310278039A CN103304301A CN 103304301 A CN103304301 A CN 103304301A CN 2013102780395 A CN2013102780395 A CN 2013102780395A CN 201310278039 A CN201310278039 A CN 201310278039A CN 103304301 A CN103304301 A CN 103304301A
- Authority
- CN
- China
- Prior art keywords
- vitriolate
- tartar
- potassium sulfate
- production method
- fertilizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- RDXARWSSOJYNLI-UHFFFAOYSA-N [P].[K] Chemical compound [P].[K] RDXARWSSOJYNLI-UHFFFAOYSA-N 0.000 title abstract 2
- 238000013270 controlled release Methods 0.000 title abstract 2
- 235000019691 monocalcium phosphate Nutrition 0.000 claims abstract description 15
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000001506 calcium phosphate Substances 0.000 claims abstract description 13
- 229910000150 monocalcium phosphate Inorganic materials 0.000 claims abstract description 13
- OQZCJRJRGMMSGK-UHFFFAOYSA-M potassium metaphosphate Chemical compound [K+].[O-]P(=O)=O OQZCJRJRGMMSGK-UHFFFAOYSA-M 0.000 claims abstract description 8
- 229940099402 potassium metaphosphate Drugs 0.000 claims abstract description 8
- 208000006558 Dental Calculus Diseases 0.000 claims description 19
- 238000002203 pretreatment Methods 0.000 claims description 10
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 5
- 238000011161 development Methods 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 3
- 229910021538 borax Inorganic materials 0.000 claims description 2
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical class [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 claims description 2
- 239000001095 magnesium carbonate Substances 0.000 claims description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 2
- 229960001708 magnesium carbonate Drugs 0.000 claims description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 2
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 239000004328 sodium tetraborate Substances 0.000 claims description 2
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 abstract 6
- 229910052939 potassium sulfate Inorganic materials 0.000 abstract 6
- 235000011151 potassium sulphates Nutrition 0.000 abstract 6
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical group OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000002710 Ilex cornuta Nutrition 0.000 description 1
- 241001310146 Ilex cornuta Species 0.000 description 1
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 1
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 235000010326 Osmanthus heterophyllus Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 231100000674 Phytotoxicity Toxicity 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 240000003768 Solanum lycopersicum Species 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- LEHOTFFKMJEONL-UHFFFAOYSA-N Uric Acid Chemical compound N1C(=O)NC(=O)C2=C1NC(=O)N2 LEHOTFFKMJEONL-UHFFFAOYSA-N 0.000 description 1
- TVWHNULVHGKJHS-UHFFFAOYSA-N Uric acid Natural products N1C(=O)NC(=O)C2NC(=O)NC21 TVWHNULVHGKJHS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229940116269 uric acid Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Fertilizers (AREA)
Abstract
The invention discloses a production method of a controlled-release phosphorus potassium fertilizer. The method comprises the following steps: (1) pretreating 100 parts of potassium sulfate, wherein potassium sulfate is agricultural potassium sulfate and needs to be pretreated, grinding and crushing the potassium sulfate, and mixing the crushed potassium sulfate with 1 part of self prepared addition agent; (2) pretreating 75 parts of monocalcium phosphate, and grinding and crushing the monocalcium phosphate; (3) mixing the potassium sulfate with the monocalcium phosphate, and then, extruding a mixture to granulates; (4) preheating at 90-120 DEG C; and (5) transferring to a special reactor to react so as to obtain potassium metaphosphate. Compared with the prior art, the method is low in synthesizing temperature and energy-saving, and cannot corrode equipment in a reaction process.
Description
Technical field
The present invention relates to a kind of production of fertilizer, in particular to utilizing vitriolate of tartar and monocalcium phosphate to produce the method for potassium metaphosphate and calcium sulfate molten mass slow release fertilizer.
Background technology
Potassium metaphosphate is a kind of good chemical fertilizer, this be because: concentration can reach 96% the effective nutritive ingredient of plant (theoretical content K2O massfraction is about 38%, P2O5 massfraction be about 58%); Low without chlorine and phytotoxicity rate, can safe deep placement, in time in seed directly contact also can not make plumule receive the infringement of burning; Be specially adapted to fear-chlorion crop, cash crop such as tomato, potato, tobacco; Concentration is high, stable chemical nature, do not absorb water, be convenient to storage transportation, and wrapping material do not need special processing, and can with the nitrogen of uric acid, the contour composition of ammonium nitrate, phosphorus, potassium without the chlorine application of mixed fertilizers.According to the different demands in the development of present technology and the agriculture production, can make at present water-soluble, Chinese holly is molten or the potassium metaphosphate of slow release type.Although decades ago, potassium metaphosphate just has been considered to a kind of favourable fertilizer form in theory, owing to early stage, equipment and materials etching problem, reason slowly the fails large-scale industrial production such as service temperature is high and do not pass a test economically.Present technique is exactly to utilize the character of vitriolate of tartar and monocalcium phosphate to make a kind of method of slowly-releasing P-K fertilizer.Reduce service temperature, solved the equipment corrosion problem.Also do not see at present relevant report and the patent application of producing the slowly-releasing P-K fertilizer with vitriolate of tartar and monocalcium phosphate.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, a kind of production method of slow release type P-K fertilizer is provided, to solve the problem in the background technology.
Purpose of the present invention just provides the method that a kind of vitriolate of tartar and monocalcium phosphate are produced a kind of slow release type P-K fertilizer, and its adopts vitriolate of tartar pre-treatment, and the monocalcium phosphate milled processed is synthesized in special purpose reactor, and last frit reaction obtains this product.
A kind of production method of slow release type P-K fertilizer, following raw material is with weight ratio, may further comprise the steps: 100 parts of pre-treatment of (1) vitriolate of tartar, vitriolate of tartar is the agricultural grade vitriolate of tartar, need through necessary pre-treatment, grind, particle diameter reaches 60～80 orders, 1 part of the auxiliary agent of mixing independent development; Described auxiliary agent by magnesiumcarbonate approximately 10～15%, borax 20～25%, calcium sulfate 55%～65% form.
(2) pre-treatment of 75 parts of monocalcium phosphates need to grind to 60～80mu;
(3) mix vitriolate of tartar and monocalcium phosphate, extruder grain then, particle diameter is about 1～2mm;
(4) preheat 90～120 ℃;
(5) deliver to special purpose reactor and react, temperature is about about 280～320 ℃, and the reaction times is about 2～3h, can obtain potassium metaphosphate.
Reacting main equation is: K
2SO
4+ CaH
2PO
4=2KPO
3+ CaSO
4+ H
2O
Beneficial effect:
The present invention compared with prior art, synthesis temperature is low, conserve energy can not corroded in the equipment reaction process.
Description of drawings
Fig. 1: production scheme of the present invention.
Embodiment
In order to make technique means of the present invention, creation characteristic, workflow, using method reach purpose and effect is easy to understand, below in conjunction with tool embodiment, further set forth the present invention.
Adopt technique vitriolate of tartar of the present invention and monocalcium phosphate to produce Potassium polymetaphosphate and calcium sulfate molten mass slow release fertilizer:
The pre-treatment of the first step vitriolate of tartar, vitriolate of tartar are the agricultural grade vitriolate of tartar, need through necessary pre-treatment, and detailed process is: get vitriolate of tartar (K2O content 〉=60%) 100kg and grind, particle diameter reaches 70 orders, mix the auxiliary agent 1kg of independent development.
Second step is got the 75kg pre-treatment of monocalcium phosphate, need to grind to 70mu;
The 3rd step was mixed vitriolate of tartar and monocalcium phosphate, extruder grain then, and particle diameter is about 1.5mm;
The 4th step pre-heating temperature is about 100 ℃
The 5th step was delivered to special purpose reactor and reacts, and temperature is about 300 ℃, and the reaction times is about 2.5h.
Reactor product is through checking content such as following table:
| N | P 2O 5 | K 2O | Total nutrient |
| O | 44.35％ | 31.04％ | 75.39％ |
Above demonstration and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. the production method of a slow release type P-K fertilizer, following raw material is with weight ratio, it is characterized in that, may further comprise the steps: 100 parts of pre-treatment of (1) vitriolate of tartar, vitriolate of tartar is the agricultural grade vitriolate of tartar, needs to grind through necessary pre-treatment, particle diameter reaches 60～80 orders, 1 part of the auxiliary agent of mixing independent development; (2) pre-treatment of 75 parts of monocalcium phosphates need to grind to 60～80mu; (3) mix vitriolate of tartar and monocalcium phosphate, extruder grain then, particle diameter is about 1～2mm; (4) preheat 90～120 ℃; (5) deliver to special purpose reactor and react, temperature is about about 280～320 ℃, and the reaction times is about 2～3h, can obtain potassium metaphosphate.
2. the production method of a kind of slow release type P-K fertilizer according to claim 1 is characterized in that, described auxiliary agent by magnesiumcarbonate approximately 10～15%, borax 20～25%, calcium sulfate 55%～65% form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310278039.5A CN103304301B (en) | 2013-06-29 | 2013-06-29 | Production method of controlled-release phosphorus potassium fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310278039.5A CN103304301B (en) | 2013-06-29 | 2013-06-29 | Production method of controlled-release phosphorus potassium fertilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103304301A true CN103304301A (en) | 2013-09-18 |
| CN103304301B CN103304301B (en) | 2015-02-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310278039.5A Expired - Fee Related CN103304301B (en) | 2013-06-29 | 2013-06-29 | Production method of controlled-release phosphorus potassium fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103304301B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311184A (en) * | 2014-09-19 | 2015-01-28 | 贵州大学 | Preparation method of special fertilizer for water spinach |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3378340A (en) * | 1963-02-26 | 1968-04-16 | Socete D Etudes Chimiques Pour | Process for the preparation of potassium phosphate |
| CN101717279A (en) * | 2009-12-07 | 2010-06-02 | 贵州省化工研究院 | Method for producing agricultural potassium metaphosphate |
| CN102534777A (en) * | 2012-02-24 | 2012-07-04 | 南开大学 | Neodymium-doped potassium gadolinium phosphate laser crystal, and preparation method and application thereof |
-
2013
- 2013-06-29 CN CN201310278039.5A patent/CN103304301B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3378340A (en) * | 1963-02-26 | 1968-04-16 | Socete D Etudes Chimiques Pour | Process for the preparation of potassium phosphate |
| CN101717279A (en) * | 2009-12-07 | 2010-06-02 | 贵州省化工研究院 | Method for producing agricultural potassium metaphosphate |
| CN102534777A (en) * | 2012-02-24 | 2012-07-04 | 南开大学 | Neodymium-doped potassium gadolinium phosphate laser crystal, and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 吴建军: "偏磷酸钾肥料生产工艺", 《云南化工》, vol. 29, no. 5, 31 December 2002 (2002-12-31), pages 7 - 9 * |
| 周堃等: "用磷酸二氢钙生产磷酸二氢钾的钾收率研究", 《化工矿物与加工》, no. 4, 31 December 2007 (2007-12-31), pages 4 - 7 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311184A (en) * | 2014-09-19 | 2015-01-28 | 贵州大学 | Preparation method of special fertilizer for water spinach |
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| Publication number | Publication date |
|---|---|
| CN103304301B (en) | 2015-02-11 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20150211 |