Urea formaldehyde(UF/MU) Urea formaldehyde(UF/MU)

Urea formaldehyde(UF/MU)

At present,our country chemical fertilizer's annual output hadachieved 150 million tons, urea occupies above 1/5.After the urea executes intothe soil,can decompose and release out nitrogen under the urine enzyme'sfunction.But the urea solubility is big,can drain along with the moisturecontent in soil; In addition, also a part of urea may adhere to the soil pelletsurface layer so that difficult to be absorbed by the crops. Thus, causes theurea's effective availability generally isonly about30%.Therefore,the variouscountries was trying to find out the method f how to raise the urea usefactor.

At the end of 40's last century,the researcher discov-ered the urea and theformaldehyde's condensation product releases the ammonia obviously is lower thanthe urea, and has carried on the experiment in the American pasture,confirmedthis kind of condensation compound has the good fertilizer effectiveness.

Thus,many countries then start to take as the slow-releasing chemical fertilizer toconduct the experimental study. In recent years according to the reports fromJapan, Germany and so on, this kind of condensation compound also had thefunctions of promo-ting soil to form the granular structure,guaranteeing thesoil moisture, preventing desertification and increasing crops root systempenetrating power.

At the same time also has characteristic, for example,environmental prote-ction, resources economization, and labor forceeconomi-zation. The composition of formaldehyde urea cannot cause the burn andthe leaching loss,can release the majority of nitrogen gradually in the entiregrowth season, other parts possibly change over to the next growth season.

Compared with soluble fertilizer, urea formaldehyde's release nitrogen speedis slower,but we have to know that most of the urea formaldehyde do not useseperately.They always mix with dissolved nitrogen and mixed ferti-lizer forwhich has phosphorus and kalium components. The soluble fertilizer provideearly period nutrient,me-anwhile,the urea formaldehyde gives and effect toprolong the efficiency.

The union of the soluble nitrogenous ferti-lizer and theurea formaldehyde's only result is to btain the nitrogenous fertilizer of whichis evenly and can leng-then the releasing time,Pledge enough nitrogen within acertain long period.

Products of UF of our company are produced accord-ing to the quality levelsofU.S.A.and Japan,which reaches the advanced international standards

Out companycanprovide Urea for maldehyde,following is the UFproducts'specification:

Total nitrogen(TN)	38-40%
Water insoluable nitrogen(WIN)	14-24%
Urine nitrogen	3-5%
Activity index (AI)	40-70%

UF(liquid)products speclifications are below:

Total nitrogen(TN)	24-28%
Water-soluble organic nitrogen	15-18%
Urine nitrogen	9%

The urea formaldehyde amy supply by granulated or the powdery.the granulatedproduct's grain size range is 1-4mm,may directly mix with other fertilizers foruse, the granular can prevent the dusting,compare with other typesfertilizer,even if the granularity reduces,also cannot influence the releasespeed greatly.The powdery product 100%sieves through 60 item,suits very much onthe ferti-lizerapplicator,and can use in making granulation craft,It is thecomplex fertilizer which obtains the different nutrient content.