CN1035991C - Process of preparing long-acting mixture of pesticide and fertilizer using zeolite as carrier - Google Patents
Process of preparing long-acting mixture of pesticide and fertilizer using zeolite as carrier Download PDFInfo
- Publication number
- CN1035991C CN1035991C CN 92110951 CN92110951A CN1035991C CN 1035991 C CN1035991 C CN 1035991C CN 92110951 CN92110951 CN 92110951 CN 92110951 A CN92110951 A CN 92110951A CN 1035991 C CN1035991 C CN 1035991C
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- CN
- China
- Prior art keywords
- zeolite
- urea
- fertilizer
- medicine
- agricultural chemicals
- 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.)
- Expired - Fee Related
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
Abstract
The present invention relates to a preparation technology for long-effect medicine fertilizers prepared by using zeolite for coating urea and agricultural chemicals. The zeolite molecule sieve can absorb and store NH<+>4 of urea under the action of soil urease and release the NH<+>4 when crops need; thus, the urea coated by the zeolite is a long effect fertilizer; the urea belongs to a neutrality fertilizer, so medicine degradation can not occur when the agricultural chemicals are sprayed on the urea; when the zeolite coats the urea granules, the agricultural chemicals are simultaneously coated in the zeolite; because the zeolite is a good carrier of the agricultural chemicals, the medicine fertilizer is a long effect medicine fertilizer integrating fertilizer effect and medicine effect. In the technology, the present invention solves the problem that the urea used as raw material fertilizers is not easy to become ball shapes in composite fertilizers; and the medicine fertilizer can simplify cultivation in production practice.
Description
The present invention relates to a kind of preparation method with natural zeolite enwrapped granule urea agricultural chemicals medicine fertilizer.
Zeolite is a kind of aqueous basic metal and alkaline earth metal aluminosilicate mineral.Have in the lattice with the external world to communicate, the aperture is the hole passage of 3-11A ° (clinoptilolite), only could come in and go out less than the molecule and the atom in this aperture, effect that Here it is said " molecular sieve ".
In the Zeolite silicate tetrahedral structure, AL
3+Normal displacement SI
4+, insufficient electric charge is by Na
+, K
+, Ca
2+Deng compensation balance, these equilibrated positively charged ions and water molecules are can both be in the passage of hole free movable, when the positively charged ion that enters by " molecular sieve " in the passage of hole, as NH
4 +, just be easy to an equilibrated cationic exchange and come out, and be left out, like this NH greater than the bacterium nitrobacter in " molecular sieve " aperture
4 +Protected storing is as extraneous NH
4 +Reduce, other positively charged ion also can enter the hole passage NH
4 +Replacement is come out again.
Since the sixties, particularly the scientific and technical personnel of state such as Japan just utilize this feature of zeolite, and having carried out zeolite mixes a lot of tests that are applied to crop with various nitrogenous fertilizer, and the result has proved zeolite for improving utilization rate of nitrogen fertilizer, and it is obvious to increase the crop yield effect.1972, China found since the zeolite deposit first, and a lot of research and production departments have made many zeolites and different fertilizer and have been mixed and are applied to the test of crop, and effect is sure.1991, Municipal Commission of Science and Technology classified " eight or five " emphasis problem to " effect and the application technical research of zeolite in compound fertilizer " as.Up to the present, ground such as Beijing, Anhui is applied to zeolite compound fertilizer in the production again and goes.
The zeolite adding technique generally is to be not less than the zeolite that adds 20-30% in 25% the compound fertilizer at nutrient content, utilization rate of nitrogen fertilizer improves more than 10%, again because zeolite itself also contains various trace elements, so zeolite interpolation amplitude is high more good more, but should not surpass 30%, the zeolite addition is big more, just necessaryly more makes material fertilizer with the high N of nutrient content, P, K, and fertile just to need to use nutrient content be 46% urea as: N.In compound fertilizer, add urea at present and have only two kinds of methods:
1. be added in the compound fertilizer after urea being pulverized, reproduce the grain oven dry, this method power consumption is big, and through high temperature, nitrogen loss is big, and the urea addition can not be higher than 10% because amount many be difficult for balling-up.
The direct blending of granular urea in compound fertilizer, not only make the fertile deliquescence easily of compound, and zeolite directly do not contact urea, this just weakens the guarantor N effect of zeolite to urea.In addition, coated ureas such as domestic and international also useful tree cake, lac resin, but the cost costliness.
Chinese patent application 89105036.1 provides a kind of zeolite long-acting compound fertilizer that contains, and is about to 80-100 order zeolite powder and adds in the chemical fertilizer and just can use behind the thorough mixing.Its adding proportion:
N fertilizer contains zeolite powder 10-50%
P fertilizer contains zeolite powder 30-40%
K fertilizer contains zeolite powder 25-35%
The problem that Chinese patent application 89105036.1 exists is:
The formation of zeolite and structures shape it have positively charged ion replacement property, wherein it and NH
4 +Avidity is better than protecting P, K greater than other positively charged ion so zeolite is protected the N performance.In N, P, K used, the easiest loss of N though P this season utilization ratio is low, had aftereffect, and K does not resemble easy loss the N yet, so emphasis should catch zeolite to protect N.If zeolite can be fully fertilely combine with N, then counterion in the zeolite will be fully by NH
4 +Replacement, this zeolite is called NH
4 +-zeolite (ammonium zeolite), the ammonium zeolite has a great advantage, is exactly the release that it can make several times tens times of P in the soil, can also make that the release of P exceeds an order of magnitude in the phosphatic rock.Obviously the method for the document does not possess this advantage.
2. owing to N, P, the various raw materials of K all add a large amount of zeolite powders, account for 22-42% after the mixing, this just reduces chemical fertilizer nutrient content significantly, as words in order to the preparation ternary compound fertilizer, can not be lower than 25% by the ministerial standard nutrient content calculates, then can only adopt high-load urea, phosphorus two ammoniums (or coarse whiting) and three kinds of zeolite chemical fertilizer of Repone K, can not use as for zeolite chemical fertilizer such as other low levels such as sulphur ammonium, general calcium, vitriolate of tartar.In case the ternary compound fertilizer nutrient is increased to about 40%, then this compound fertilizer will be difficult to preparation.So the application of zeolite chemical fertilizer is very limited.
3. zeolite powder is directly mixed compound fertilizer in the various chemical fertilizer, be planar, be not easy to mechanize and use, this is a very big shortcoming.
Chinese patent application 92108010.7 provides a kind of calcium superphosphate system muffled fertilizer and production method thereof, being core with urea etc. promptly, is shell with calcium superphosphate, phosphorus ammonium or sylvite, is binding agent with white clay powder and bentonite in powder, water spray rocking-turn granulating in shaking tray, oven dry becomes product again.In binding agent, also can add agricultural chemicals, trace element, plant growth agent etc.
The problem that Chinese patent application 92108010.7 exists is:
1. be the parcel shell with calcium phosphate, phosphorus ammonium or sylvite, just a kind of hybrid mode between different fertilizer is wrapped up shell and is not had suction NH
4 +Effect is to strengthen the N ability of protecting.
2. need binding agent white clay powder and bentonite in powder and slightly wrap up sylvite and also need pulverize etc., operation is loaded down with trivial details, and cost increases.
3. the white clay powder is not the good carrier of agricultural chemicals
Therefore, how in compound fertilizer, to add the urea raw material and become current urgency first problem to be solved.
Second preparation technology's problem that problem is an agricultural chemicals fertilizer, this is an emerge science, at present, particularly Japan, the U.S., USSR (Union of Soviet Socialist Republics), also have China, in order to simplify cultivation, reduction agricultural operation cost, boost productivity, development agricultural chemicals fertilizer, it is very fast with the fertile tempo of the agricultural chemicals that kills soil pests particularly to remove weed fertilizer, but preparation technology's more complicated, so that influence further developing of agricultural chemicals fertilizer.
Therefore, the object of the present invention is to provide a kind of preparation method with zeolite coated urea, agricultural chemicals medicine fertilizer.
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of production method simple, cost is low, the production method of respond well zeolite Wrapped fertilizer.
Through Patent Office of the People's Republic of China's retrieval, up to the present, the preparation method of also not useful zeolite coated urea, agricultural chemicals also has with the associated patent of the present invention: CN91100358.4, CN90103253, SU763310.
Preparation method with zeolite coated urea, agricultural chemicals medicine fertilizer of the present invention is as follows:
(1) quantitative granular urea is put into shaking tray, and rotate.
(2) spray into the water of counting 6-10% with weight of urea with shower nozzle, shook 3 minutes, make the urea granules surface molten slightly.
(3) add the above zeolite powder of 100 orders, its addition is zeolite by weight: urea=3: 2-3.
(4) if still have urea granules and zeolite powder in the shaking tray, water shortage is described, can continues water spray, till balling-up.
(5) wet bulb of zeolite coated urea, by being sent to dram, temperature is controlled at below the temperature that prevents the urea fusing, product.
(6) urea efficiency is slower, when adding other instant nitrogenousfertilizer as need, then can be dissolved in other nitrogenous fertilizer in the water that sprays into urea, and it is identical with the above-mentioned water yield to spray into solution, and operation afterwards is same as described above.
(7) if add trace element, can be dissolved in trace compound in the water, be sprayed on the urea, or trace compound directly is sprinkling upon on the urea that rolls in the shaking tray sprays water, operation afterwards is same as described above.
(8) when making agricultural chemicals fertilizer, can be dissolved in emulsifiable concentrates for agricultural chemicals or pulvis in the water, form aqua, spray on the urea again.Operation afterwards is same as described above, but will notice that the water solvent that (1) is sprayed on the urea still is 6-10%; (2) tight calculating, the urea of every mu of use and pesticide volume; (3) control bake out temperature can not make medicine decompose; (4) prevent that production and user of service poison; (5) clear and definite operation instruction.
Now illustrate embodiment of the present invention:
For example produce the mixed fertilizer of zeolite weeding that 5 mu of corn fields are used, N: P
2O
5: K
2O: weight was respectively 9.2: 6: 10, executed ZnSO
40.4 kilogram/mu, weedicide Aunar draw rule and each 0.1kg/ mu of drag-line.
Its concrete production technique is:
1. put into the shaking tray 50kg urea of granulating disc, and rotate shaking tray.
2. draw rule and 0.5kg drag-line to obtain 3kg water drug solns with 2kg water dissolution 0.5kg Aunar, be sprayed on the urea granules, make the urea granules surface molten slightly.
3. add zeolite powder gradually to 50kg.In its encapsulation process, when finding water shortage, can spray clear water, until being rolled into wet grain.
4. by travelling belt, wet grain enters dram, dries under the temperature that agricultural chemicals was lost efficacy, and promptly becomes zeolite agricultural chemicals urea spheres.
5. be nutrient content 14.5% general calcium 106kg again, 60% Repone K 42kg and zinc sulfate 2kg shake the ball oven dry, mix with above-mentioned zeolite agricultural chemicals urea spheres, promptly become the 250kg corn and remove weed fertilizer, and 5 mu of ground maize plantings of confession are used.
Preparation method's of the present invention advantage is:
(1) binding agent of the present invention is water or water drug solns, and production process is simple, and is with low cost.
(2) zeolite of the present invention is wrapped up in urea and is closely concentrated, and the anti-leaching that is manured into soil easily forms the ammonium zeolite, and it is strong to protect N, urgees P releasability height.
(3) medicine fertilizer of the present invention is effective, and effective drug duration is long, can simplify cultivation.
Claims (4)
1. preparation method of wrapping up in urea agricultural chemicals medicine fertilizer with zeolite powder; it is characterized in that this method comprises the shaking tray of granular urea being put into granulating disc; spray into the G-30027 and the drag-line aqueous solution of counting 6-10% with weight of urea; add the above zeolite powder of 100 orders then; the addition ratio of zeolite powder and urea by weight is 3: 2-3; be rotated further shaking tray until balling-up, drying promptly obtains product.
2. according to the preparation method of the described medicine fertilizer of claim 1, it is characterized in that other nitrogenous fertilizer of dissolving in the described aqueous solution that sprays into.
3. the fertile preparation method of medicine according to claim 1 is characterized in that dissolving trace compound in the described aqueous solution that sprays into.
4. according to the preparation method of the described medicine fertilizer of claim 3, it is characterized in that trace compound is a zinc sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110951 CN1035991C (en) | 1992-09-25 | 1992-09-25 | Process of preparing long-acting mixture of pesticide and fertilizer using zeolite as carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110951 CN1035991C (en) | 1992-09-25 | 1992-09-25 | Process of preparing long-acting mixture of pesticide and fertilizer using zeolite as carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1084501A CN1084501A (en) | 1994-03-30 |
| CN1035991C true CN1035991C (en) | 1997-10-01 |
Family
ID=4945060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92110951 Expired - Fee Related CN1035991C (en) | 1992-09-25 | 1992-09-25 | Process of preparing long-acting mixture of pesticide and fertilizer using zeolite as carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035991C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100494028C (en) * | 2004-01-22 | 2009-06-03 | 欧瑞康纺织有限及两合公司 | Thread traversing device for a winding device of spinning machine for producing cross wound bobbin |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056589C (en) * | 1996-07-17 | 2000-09-20 | 安徽省农业科学院土壤肥料研究所 | Method for preparing NH4 saturated zeolite capable of making undissolved phosphate in soil effective |
| CN1098831C (en) * | 1999-09-30 | 2003-01-15 | 吉林大学 | Durable ammonium-type chemical fertilizer and its preparing process |
| ITTO20010363A1 (en) * | 2001-04-13 | 2002-10-13 | Odore Carlo | UREA NITROGEN-BASED FERTILIZER COATED WITH ZEOLITE. |
| CN102491857A (en) * | 2011-12-12 | 2012-06-13 | 新疆慧尔农业科技发展有限公司 | Long-acting slow-release urea and preparation method thereof |
| CN102838432A (en) * | 2012-09-27 | 2012-12-26 | 遵义市贵科科技有限公司 | Quick-acting loss-free nitrogenous fertilizer prepared by taking perlite as carrier |
| CN106518382A (en) * | 2016-11-08 | 2017-03-22 | 王兵 | Preparation method of artificial zeolite type sustained-release nitrogen fertilizer |
-
1992
- 1992-09-25 CN CN 92110951 patent/CN1035991C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100494028C (en) * | 2004-01-22 | 2009-06-03 | 欧瑞康纺织有限及两合公司 | Thread traversing device for a winding device of spinning machine for producing cross wound bobbin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1084501A (en) | 1994-03-30 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |