CN1271013C

CN1271013C - Potassium sulfate composite fertilizer and its production process

Info

Publication number: CN1271013C
Application number: CN 200410036556
Authority: CN
Inventors: 杨文豪; 栾其波; 吕守勋; 王友双; 胡悦玉
Original assignee: QIXIA HONGXIANG MICROBE FERTILIZER CO Ltd
Current assignee: QIXIA HONGXIANG MICROBE FERTILIZER CO Ltd
Priority date: 2004-11-26
Filing date: 2004-11-26
Publication date: 2006-08-23
Anticipated expiration: 2024-11-26
Also published as: CN1631853A

Abstract

The present invention relates to a potassium sulfate compound fertilizer and a production process thereof, which belongs to the technical field of a compound fertilizer and a production process technology of the compound fertilizer. The potassium sulfate compound fertilizer is characterized in that raw materials have the formula by weight percentage that urea with the nitrogen content of more than or equal to 46% is from 21 to 23%, calcium superphosphate with the P2O5 content of more than or equal to 14% is from 37 to 39%, potassium sulphate with the K2O content of more than or equal to 50% is from 19 to 21%, high-calcium clay soil is from 19 to 21%, the content of integral N+P2O5+K2O is more than or equal to 25%. The process flow comprises: mixing agitation, granulation, drying, cooling and metering packaging; the technical characteristics comprise: (1) the formula is scientific, the element content of N, P and K in the fertilizer is more than or equal to 25%, and fertilizer property is stability; (2)salinity and alkalinity of soil can be reduced, and soil harden is prevented; (3) fertilization is convenient, and the potassium sulfate compound fertilizer can be used as an additional fertilizer or a base fertilizer; (4) application range is wide; (5) the yield increasing effect to crops is obvious, crop quality is enhanced, and the storage quality of fruit is improved; (6) the potassium sulfate compound fertilizer does not contain any harmful ingredients and has the advantages of high yield, high efficiency and high quality.

Description

Composite fertilizer and production technique thereof

One, technical field:

The present invention relates to a kind of composite fertilizer and production technique thereof, belong to composite fertilizer and technical field of producing thereof.

Two, background technology:

Existing compound potassium sulfate fertilizer formula for a product is unreasonable, pursues high nitrogen or high potassium class composite fertilizer singlely, and blindness is big, and utilization ratio is low, have in addition cause quality of agricultural product low, the harm consumer health; Physical behavior is bad, and dust is many, not resistance to compression, and caking is not easy to store, transports and fertilising.

Three, summary of the invention

The objective of the invention is to overcome above drawback, reasonably various elements are puddled processing in proportion, provide that a kind of nutrient is reasonable, complete, physical form is good, no dust, resistance to compression, do not lump, be convenient to store, transport and fertilising, cooperate best fertilizer compound potassium sulfate fertilizer and the production technique thereof that imposes with bio-feritlizer, organic fertilizer.

Composite fertilizer of the present invention technical solution is as follows:

1, composite fertilizer, special character is that according to weight percent composition of raw materials is the urea 21-23% of nitrogen content 〉=46%, P ₂O ₅The calcium superphosphate 37-39% of content 〉=14%, K ₂The vitriolate of tartar 19-21% of O content 〉=50%, high calcium clay 19-21%, comprehensive N+P ₂O ₅+ K ₂O content 〉=25%;

2,------oven dry--cooling---metering packing can also have the screening operation behind the refrigerating work procedure to compound fertilizer production technology flow process: puddle, and behind the refrigerating work procedure or after the screening operation coating operation can also be arranged, wherein in granulation

(1),------order of addition(of ingredients) of--vitriolate of tartar---high calcium clay feeds intake calcium superphosphate to puddle operation: according to urea, every groove deduction batch turning time, only the time of puddling is 5 minutes, even to guarantee material mixing, every groove blowing time was controlled at about 6 minutes, can not neglect fast neglecting slowly, in order to avoid influence the granulation quality;

(2), granulating working procedure: this operation is the disc spray granulation, and it is standard that hydraulic pressure must reach with the ejection mist, guarantees even particle size, the slyness produced, and surface gloss is good;

(3), baking operation: accurately control furnace temperature, end flue temperature in 110-130 ℃ of scope of stove tail, forbids temperature difference fluctuation excessive at 400-440 ℃;

(4), refrigerating work procedure; This operation is based on air-cooled, and according to the humidity of finished product (moisture content should in 10%), the size of in time regulating wind-force guarantees that finished product moisture content does not exceed standard;

(5), screening operation: should in time beat sieve, and check finished product, guarantee that the finished product endoparticle is even, granule is no more than 5%;

(6), coating operation: finished surface is pounced on last layer organic plant oil;

(7), metering packing operation: finished product metering packing.

Compound potassium sulfate fertilizer technical characterstic of the present invention:

(1), scientific formulation, N, P, K constituent content 〉=25% in the fertilizer, science is moderate, contained N, P, each element of K are can be for nitric nitrogen, ammonium nitrogen, phosphoric acid salt, the potassium ion of plant absorbing utilization, effective fertilizer composition can be water-soluble fully, is beneficial to crop and absorbs, to give full play to fertilizer efficiency, fertilizer efficiency can not take place and degenerate in the fertilizer stable in properties in storing, transporting; (2), a large amount of use can reduce soil salinity and alkalinity, keeps soil from packing together, and do not contain heavy metal etc. to plant and the deleterious impurity of soil, helps protecting environment; (3), use conveniently, can topdress, yield positive results the phase to the demand of N, P, K as plant growth early stage, stem tuber expanding stage and fruit tree, also can make base manure; (4), applied widely, both be applicable to cash crop such as apple, vegetables, tobacco, large cherry, watermelon, be applicable to grain and oil crops such as wheat, corn, paddy rice, peanut again, effect is remarkable; (5) obvious to the crop yield effect, also improve crop quality, improve the resistance of melon and fruit, vegetables, strengthen resistance against diseases, drought-resistant ability and anti-other poor environment abilities, help melon and fruit, vegetables high and stable yields, can prolong melon and fruit, Vegetable Preservation phase and shelf-life, improve the storage quality of fruit, can satisfy the demand of fear-chlorion crop, a large amount of moderate-element sulphur can be provided, guarantee crop quality potassium; (6), not containing any objectionable constituent, is the green fertilizer that develops eco-agriculture, and can reduce cost to greatest extent, improves fertilizer efficiency, highly efficient and productive, high-quality.

Four, embodiment

The specific embodiments that the present invention is more complete is as follows:

Embodiment 1

Compound potassium sulfate fertilizer, according to weight percent, composition of raw materials is the urea 21% of nitrogen content 〉=46%, P ₂O ₅The calcium superphosphate 39% of content 〉=14%, K ₂The vitriolate of tartar 20% of O content 〉=50%, high calcium clay 20%,

N, P ₂O ₅, K ₂O content is 46%*21%+14%*39%+50%*20%=9.66%+5.46%+10.0%=25.12% 〉=25%;

The compound potassium sulfate fertilizer technological process of production:

Puddle--granulation----oven dry--cooling----screening----coating-----metering packing, wherein

(7), metering packing operation: finished product accurate measurement, every bag of net weight is within (40 plus-minus 0.4) kg, when packing personnel pack, to check conscientiously to have or not inner bag in bag weaved that forbid not have inner bag or inner bag is pressed into the bag end, line must be straight during the seam bag, the line-spacing sack is advisable for 5 centimetres, every bag of finished product all will be put into conformity certification, and conformity certification should be put into sack, forbids to be pressed in the finished product material.

Embodiment 2

The difference of the compound potassium sulfate fertilizer of present embodiment and embodiment 1 is:

According to weight percent, composition of raw materials is the urea 23% of nitrogen content 〉=46%, P ₂O ₅The calcium superphosphate 39% of content 〉=14%, K ₂The vitriolate of tartar 19% of O content 〉=50%, high calcium clay 19%,

N, P ₂O ₅, K ₂O content is 46%*23%+14%*39%+50%*19%=10.58%+5.46%+9.50%=25.54% 〉=25%; There is not the screening operation in the production technique behind the refrigerating work procedure.

Embodiment 3

According to weight percent, composition of raw materials is the urea 22% of nitrogen content 〉=46%, P ₂O ₅The calcium superphosphate 38% of content 〉=14%, K ₂The vitriolate of tartar 21% of O content 〉=50%, high calcium clay 19%,

N, P ₂O ₅, K ₂O content is 46%*22%+14%*38%+50%*21%=10.12%+5.32%+10.50%=25.94% 〉=25%; No coating operation behind the refrigerating work procedure in the production technique.

Embodiment 4

According to weight percent, composition of raw materials is the urea 23% of nitrogen content 〉=46%, P ₂O ₅The calcium superphosphate 37% of content 〉=14%, K ₂The vitriolate of tartar 19% of O content 〉=50%, high calcium clay 21%,

N, P ₂O ₅, K ₂O content is 46%*23%+14%*37%+50%*19%=10.58%+5.18%+9.50%=25.26% 〉=25%; There are not screening operation and coating operation in the production technique behind the refrigerating work procedure.

Experiment showed, the compound potassium sulfate fertilizer technical characterstic of the above embodiment of satisfactory the present invention in the effective constituent scope:

(1), scientific formulation, N, P, K constituent content 〉=25% in the fertilizer, science is moderate, contained N, P, each element of K are can be for nitric nitrogen, ammonium nitrogen, phosphoric acid salt, the potassium ion of plant absorbing utilization, effective fertilizer composition can be water-soluble fully, is beneficial to crop and absorbs, to give full play to fertilizer efficiency, fertilizer efficiency can not take place and degenerate in the fertilizer stable in properties in storing, transporting; (2), a large amount of use can reduce soil salinity and alkalinity, keeps soil from packing together, and do not contain heavy metal etc. to plant and the deleterious impurity of soil, helps protecting environment; (3), use conveniently, can topdress, yield positive results the phase to the demand of N, P, K as plant growth early stage, stem tuber expanding stage and fruit tree, also can make base manure; (4), applied widely, both be applicable to cash crop such as apple, vegetables, tobacco, large cherry, watermelon, be applicable to grain and oil crops such as wheat, corn, paddy rice, peanut again, effect is remarkable; (5), compound potassium sulfate fertilizer of the present invention proves through a large amount of field experiments, obvious to the crop yield effect, also improve crop quality, improve the resistance of melon and fruit, vegetables, strengthen resistance against diseases, drought-resistant ability and anti-other poor environment abilities, help melon and fruit, vegetables high and stable yields, can prolong melon and fruit, Vegetable Preservation phase and shelf-life, improve the storage quality of fruit, can satisfy the demand of fear-chlorion crop potassium, a large amount of moderate-element sulphur can be provided, guarantee crop quality; (6), not containing any objectionable constituent, is the green fertilizer that develops eco-agriculture, and can reduce cost to greatest extent, improves fertilizer efficiency, highly efficient and productive, high-quality.

Claims

1, composite fertilizer is characterized in that according to weight percent, and composition of raw materials is the urea 21-23% of nitrogen content 〉=46%, P ₂O ₅The calcium superphosphate 37-39% of content 〉=14%, K ₂The vitriolate of tartar 19-21% of O content 〉=50%, high calcium clay 19-21%, comprehensive N+P ₂O ₅+ K ₂O content 〉=25%.

2, compound fertilizer production technology is characterized in that technical process is:

Puddle--granulation----oven dry--cooling---metering packing,

(1),------order of addition(of ingredients) of--vitriolate of tartar---high calcium clay feeds intake calcium superphosphate to puddle operation: according to urea;

(2), granulating working procedure: this operation is the disc spray granulation, and it is standard that hydraulic pressure must reach with the ejection mist;

(4), refrigerating work procedure; This operation is based on air-cooled, and according to the humidity of finished product, moisture content should in time be regulated the size of wind-force in 10%;

(5), metering packing operation: finished product metering packing.

3, according to the described compound fertilizer production technology of claim 2, it is characterized in that sieving operation in addition behind the refrigerating work procedure,

Screening operation: in time beat sieve, check finished product, guarantee that the finished product endoparticle is even.

4, according to claim 2 or 3 described compound fertilizer production technologies, it is characterized in that behind the refrigerating work procedure or the screening operation after also have the coating operation,

Coating operation: finished surface is pounced on last layer organic plant oil.