CN1033617A - Phosphogypsum long-term fertilizer and manufacture method thereof - Google Patents
Phosphogypsum long-term fertilizer and manufacture method thereof Download PDFInfo
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- CN1033617A CN1033617A CN 88107910 CN88107910A CN1033617A CN 1033617 A CN1033617 A CN 1033617A CN 88107910 CN88107910 CN 88107910 CN 88107910 A CN88107910 A CN 88107910A CN 1033617 A CN1033617 A CN 1033617A
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Abstract
Durable composite fertilizer provided by the invention can be used for various farm crop, is characterized in, what make the slow release of fertilizer component is the carrier that can load the fertilizer component, and this carrier is phosphogypsum or gypsum; The present invention simultaneously also provides the manufacture method by the long-acting compound fertilizer of phosphogypsum or gypsum as fertilizer sources component carrier, and this method only needs to allow it with fertilizer component mixing phosphogypsum or gypsum partial dehydration, granulation, and drying can be finished; The used phosphogypsum of the present invention is to have phosphatic rock to produce the waste that discharge phosphoric acid (or coarse whiting) back, therefore, not only at the bottom of the manufacturing cost, and refuse is fully used.
Description
The invention belongs to chemical fertilizer and manufacture method thereof in the chemical industry class.
Controlled availability fertilizer is a kind of fertilizer variety that has been applied to agriculture production, because it has the saving of labor, saves time and can improve the advantage of utilization rate of fertilizer, therefore more and more is subjected to people's welcome.The controlled availability fertilizer majority of prior art is so-called coated fertilizer or Wrapped fertilizer, they all are that various fertilizer components are wrapped with macromolecular material or inorganic materials, forming one deck coating does not directly contact the fertilizer component with soil, thereby reach the purpose that slowly discharges continuously, all have nutrient to supply with in the phase in whole growth to guarantee crop; Their making method is more complicated all, and difficulty is big, and to the requirement of equipment than higher, as United States Patent (USP) NO.3697245 introduced disclosed with Chinese patent GK8710546 be exactly like this.
In addition, also having the discrete controlled availability fertilizer is to adopt the fertilizer component with macromolecular compound phase blended way, its reason is similar with forming coating with macromolecular compound, belong to a class together, disclosed as Chinese patent GK85108881 is exactly the fertilizer component to be mixed mutually with plastics make, its quantity of plastics is minimum also accounts for 20% of fertilizer gross weight, and high reaches 90%.
The shortcoming of above-mentioned controlled availability fertilizer is that production cost is higher, and facility investment is big, the technical difficulty height, and the manufacturing process complexity, used coated fertilizer is to improving the soil and the few of effects of growth of farm crop.
The objective of the invention is to make a kind of compound manure with certain slow without macromolecular material and inorganic materials as fertilizer sources coating.
In order to reach purpose of the present invention, we have proposed the fertilizer component is packed in the appropriate carriers, and make particulate-type, the imagination that the fertilizer component can be discharged in company with the slow dissolving of carrier.We select the carrier of phosphogypsum as fertilizer sources component for use, have reached purpose of the present invention.Particular content is phosphogypsum or gypsum to be transformed into bassanite, that is:
A certain amount of aqueous solution that contains the fertilizer component, be added in this bassanite, the fertilizer component just can mix mutually with the phosphogypsum after changing like this, when phosphogypsum or gypsum once more with the water effect and form dihydrate gypsum and when solidifying, the molecule of fertilizer component will enter the lattice of gypsum and is solidificated in the inside equably, because the solubleness of dihydrate gypsum in water is very little, so it just can dissolve and progressively discharge fertilizer component molecule lentamente and absorbs for crop in soil.Like this, in fact phosphogypsum has just played the effect of loading the fertilizer component, becomes the carrier of fertilizer component.
When making fertilizer, can control the dehydration temperaturre or the time of phosphogypsum or gypsum as required, make its ratio difference that forms semi-hydrated gypsum, to make the durable composite fertilizer of different dissolution rates; In addition, can control phosphogypsum or gypsum ratio, to make the required durable composite fertilizer of various crops with the fertilizer component.
For being the durable composite fertilizer that carrier is done with phosphogypsum or gypsum, its used fertilizer component can be the known chemical fertilizer and the trace element fertilizer of some molten solid carbon dioxides, such as, urea, ammonium nitrate, Repone K, saltpetre, vitriolate of tartar, ammonium phosphate, SODIUMNITRATE, potassium primary phosphate, zinc sulfate, boric acid, manganous sulfate, ammonium molybdate, and by two or more above-mentioned compound manure of forming.
Manufacture method of the present invention is, at first phosphogypsum or terra alba dewatered on rotary kiln, and temperature is grasped 120 and spent between 160 degree, and heat-up time was at 5 to 20 minutes; The aqueous solution that will contain the fertilizer component is added in the phosphogypsum or gypsum of this dehydration, uses the stirrer stirring and evenly mixing; Use the tablets press granulation, the drying machine drying is promptly made phosphogypsum long-term fertilizer.
Select gypsum for use, the carrier of phosphogypsum as fertilizer sources component particularly, except it can make the slow release of fertilizer component, the benefit that also has other, because, in recent years, the many countries and regions that comprise China have all been reported the lack of soil sulfur phenomenon in succession, the area that has has directly had influence on agriculture production, so the carrier with phosphogypsum as fertilizer sources component can also replenish the required thionin of crop, simultaneously, because phosphogypsum is to produce the waste that discharge phosphoric acid (or coarse whiting) back with phosphatic rock, therefore also contain other such as silicon-dioxide, Vanadium Pentoxide in FLAKES, magnesium, sodium etc. have the material of certain benefit to crop.This compound manure is tested on the crops such as flue-cured tobacco by at paddy rice, corn, broad bean, has all obtained tangible effect of increasing production.Advantages such as so the present invention has low cost of manufacture, production method is simple, and operation is few, and facility investment intensity is little.
Embodiment one
Phosphogypsum powder is heated to 150 degree on rotary kiln, and kept 10 minutes; Parts by weights another name is got 30 parts of this phosphogypsums, 9 parts in urea, and 1 part in zinc sulfate, and urea and zinc sulfate is made into 60% and 6.6% the aqueous solution; Phosphogypsum is mixed with solution of zinc sulfate mutually with the urea that has prepared, fully stir, when stirring, also can make it become best granulation state by the control water yield with stirrer; At last, use the tablets press granulation, the drying machine drying has promptly been made phosphogypsum long-term fertilizer.
Embodiment two
Phosphogypsum powder is heated to 160 degree on rotary kiln, and kept 5 minutes, the parts by weights another name is got 70 parts of this phosphogypsums, 10 parts in ammonium nitrate, and 10 parts of potassium primary phosphates, and ammonium nitrate and potassium primary phosphate be made into 20% and 20% the aqueous solution; Phosphogypsum with the ammonium nitrate that has prepared and the water-soluble liquid-phase mixing of potassium primary phosphate, is fully stirred with stirrer; At last, use the tablets press granulation, the drying machine drying promptly can be made into durable composite fertilizer of the present invention.
Embodiment three
Phosphogypsum powder is heated to 140 degree on rotary kiln, and kept 15 minutes; Parts by weights another name is got 40 parts of this phosphogypsums, 9 parts in urea, and 1 part of boric acid, and urea and boric acid is made into 45% and 5% the aqueous solution; Phosphogypsum is mixed with boric acid solution mutually with the urea that has prepared, fully stir with stirrer; At last, use the tablets press granulation, the drying machine drying is promptly made required durable composite fertilizer.
Embodiment four
Terra alba is heated to 150 degree on rotary kiln, and kept 8 minutes; Parts by weights another name is got 25 parts in gypsum, 10 parts in urea, and urea is made into concentration is 70% the aqueous solution, and inside 25 parts of gypsum are added to, stirring and evenly mixing; Use the tablets press granulation, final drying promptly can be made into.
Claims (2)
1, a kind of long-acting compound fertilizer is characterized in that, what make the slow release of fertilizer component is the carrier that can load the fertilizer component, and this carrier is phosphogypsum or gypsum, but is preferably phosphogypsum.
2, making the method for durable composite fertilizer with phosphogypsum or gypsum as fertilizer sources component carrier, is with behind the phosphogypsum thermal dehydration, with the aqueous solution that contains the fertilizer component, stirring and evenly mixing, granulation, drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107910 CN1033617A (en) | 1988-11-12 | 1988-11-12 | Phosphogypsum long-term fertilizer and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107910 CN1033617A (en) | 1988-11-12 | 1988-11-12 | Phosphogypsum long-term fertilizer and manufacture method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1033617A true CN1033617A (en) | 1989-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88107910 Pending CN1033617A (en) | 1988-11-12 | 1988-11-12 | Phosphogypsum long-term fertilizer and manufacture method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN1033617A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948904A (en) * | 2016-05-03 | 2016-09-21 | 山东东佳集团股份有限公司 | Method for preparing calcium sulfate composite fertilizer by using solid waste titanium gypsum |
| CN106892757A (en) * | 2017-04-12 | 2017-06-27 | 山东爱福地生物科技有限公司 | A kind of preparation method of silicon magnesium calcium fertilizer material |
| CN107001164A (en) * | 2014-12-26 | 2017-08-01 | 吉野石膏株式会社 | The shedding suppressing method of blueberry gypsum and blueberry |
| CN110352956A (en) * | 2019-07-29 | 2019-10-22 | 盱眙县骏达凹凸棒材料有限公司 | A kind of attapulgite clay composite industrial solid waste material granule agent farm chemical carrier |
-
1988
- 1988-11-12 CN CN 88107910 patent/CN1033617A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107001164A (en) * | 2014-12-26 | 2017-08-01 | 吉野石膏株式会社 | The shedding suppressing method of blueberry gypsum and blueberry |
| CN105948904A (en) * | 2016-05-03 | 2016-09-21 | 山东东佳集团股份有限公司 | Method for preparing calcium sulfate composite fertilizer by using solid waste titanium gypsum |
| CN106892757A (en) * | 2017-04-12 | 2017-06-27 | 山东爱福地生物科技有限公司 | A kind of preparation method of silicon magnesium calcium fertilizer material |
| CN110352956A (en) * | 2019-07-29 | 2019-10-22 | 盱眙县骏达凹凸棒材料有限公司 | A kind of attapulgite clay composite industrial solid waste material granule agent farm chemical carrier |
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