Cov tshuab ua chiv uas siv ntau yog cov tshuab ua chiv ob txheej dov thiab cov tshuab ua chiv tiaj tiaj (ntiv nplhaib). Thaum lub sijhawm ua cov chiv sib xyaw, cov tshuab ua chiv no yuav ua rau cov nitrogen ntau ntxiv raws li qhov xav tau, thiab qee qhov siv urea ua qhov chaw ntawm cov nitrogen, uas yooj yim nqus cov dej noo hauv huab cua thiab ua rau cov chiv sib xyaw lo ua ke. Yog li ntawd, feem ntau hais tias cov tshuab ua chiv ob txheej dov yog cov tshuab ua hmoov qhuav, uas muaj txiaj ntsig zoo dua rau kev ua cov chiv rau cov khoom siv raw uas muaj dej noo tsawg dua 10%. Rau cov khoom siv ntub, yuav tsum tau siv cov thev naus laus zis tiv thaiv kev tawv. Rau kev khaws cov chiv uas muaj dej noo ua cov khoom siv raw ntawm cov chiv sib xyaw, yuav tsum tsis txhob tawv.
Lub hauv paus ntsiab lus thiab qhov xav tau dej ntawm cov chiv ua los ntawm cov khoom siv ua cov granulator
Lub hauv paus ntsiab lus ua haujlwm ntawm lub tshuab extrusion granulator feem ntau yog hmoov qhuav ua cov khoom siv tseem ceeb. Thaum cov khoom tawg yooj yim raug nias, ib feem ntawm cov khoom me me raug tsoo, thiab cov hmoov zoo yuav puv qhov sib txawv ntawm cov khoom me me. Hauv qhov no, yog tias cov tshuaj sib txuas dawb ntawm qhov chaw tshiab tsim tsis tuaj yeem nqus tau sai nrog cov atoms lossis molecules los ntawm huab cua ib puag ncig, cov chaw tshiab tsim los sib cuag nrog ib leeg thiab tsim cov kev sib txuas rov ua dua tshiab. Rau kev extrusion ntawm lub roller, daim tawv nqaij ntawm lub roller muaj lub qhov sib txawv spherical, uas yog extruded rau hauv lub spherical zoo li, thiab cov khoom me me extruded los ntawm lub tiaj (ntiv nplhaib) tuag yog columnar.Kev ua cov granule extrusion xav tau cov dej noo tsawg. Yog tias cov dej noo ntau dhau, nws yog qhov tsim nyog ntxiv lub tshuab ziab rau hauv cov txheej txheem ua khoom.
Kev daws teeb meem rau cov teebmeem tsis zoo ntawm cov dej noo ntawm cov nitrogen hauv cov txheej txheem ua cov chiv sib xyaw
Qhov tseem ceeb ntawm kev sib xyaw ua ke hauv cov txheej txheem ua cov chiv sib xyaw feem ntau yog cov dej ntau uas tshwm sim los ntawm qhov chaw nitrogen uas urea nqus dej. Hais txog kev siv tshuab, qhov pib thiab qhov ceev ntawm "kev hlawv qeeb" ntawm cov chiv sib xyaw tsis nce nrog qhov nce ntawm ammonium nitrate thiab potassium chloride. Piv txwv li, ib qho sib xyaw uas muaj 80% ammonium nitrate thiab 20% potassium chloride tsis hlawv, tab sis muaj Ib qho sib xyaw ntawm 30% diatomaceous earth, 55% ammonium nitrate, thiab 15% potassium chloride ua rau muaj "kev hlawv qeeb" muaj zog dua.
Cov khoom siv chiv sib xyaw uas muaj urea ua qhov chaw nitrogen muaj qhov hygroscopicity siab thiab qhov taw tes mos qis; biuret thiab adducts yooj yim tsim thaum qhov kub siab; urea yuav raug hydrolyzed thaum qhov kub siab, ua rau poob ammonia.
Qhov no yog qhov tsim nyog los daws qhov dej ntau dhau los ntawm qhov chaw nitrogen nqus dej. Txo qhov chaw nitrogen Thaum calcium superphosphate muaj, phosphorus uas yaj hauv dej yuav raug rhuav tshem; thaum tsim cov urea-common calcium superphosphate compound chiv, superphosphate feem ntau yuav tsum tau kho ua ntej, xws li ammoniation, uas tuaj yeem tshem tawm cov adducts Tsim, lossis ntxiv calcium magnesium phosphorus kom neutralize cov kua qaub dawb ntawm superphosphate, thiab hloov cov dej dawb mus rau hauv dej siv lead ua, txhim kho cov khoom zoo, lossis ntxiv ammonium sulfate, uas tuaj yeem txo cov dej noo ntawm cov khoom tiav thiab ua kom muaj zog ntawm cov khoom tiav; thaum muaj chlorine Thaum ammonium hloov pauv, urea thiab chlorine tsim cov adduct, uas ua rau cov crystallization ntau ntxiv, uas ua rau cov chiv rov ua kom sov yooj yim ua rau cov khoom tiav thaum lub sijhawm khaws cia; yog li ntawd, cov chiv sib xyaw nrog urea ua qhov chaw nitrogen yuav tsum tau them sai sai rau cov txheej txheem ziab thiab txias..Piv txwv li, qhov kub thiab txias ntawm qhov ziab yuav tsum tsis txhob siab dhau, lub sijhawm ziab yuav tsum tsis txhob ntev dhau, cov dej noo uas tau teev tseg hauv tus qauv zoo yuav tsum tau ua tiav, yuav tsum tsis txhob muaj qhov tshwm sim yaj thaum lub sijhawm tsim khoom, thiab yuav tsum tsis txhob khaws cia thaum lub sijhawm khaws cia.
Cov saum toj no yog cov laj thawj rau cov dej noo ntau hauv cov txheej txheem granulation ntawm lub tshuab compound fertilizer, uas ua rau compaction. Txoj hauv kev tseem ceeb kom tsis txhob compaction yog siv lub tshuab ziab. Kev kho cov ntaub ntawv ua ntej, ntxiv cov ntsiab lus thiab lwm txoj hauv kev, kom paub txog kev ua thiab tsis ua puas tsuaj ntawm cov khoom chiv sib xyaw.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-10-2022
