nkhani

Gulu la feteleza

Mitundu ya feteleza ingagawidwe mozama mu mitundu iwiri: feteleza wa inorganic ndi feteleza wachilengedwe.
Feteleza wamba wamankhwala amaphatikiza feteleza wa nayitrogeni wa elemental, feteleza wa phosphate ndi feteleza wa potashi, feteleza wamitundu iwiri, feteleza wazinthu zitatu ndi feteleza wamitundu yambiri, komanso feteleza wapawiri wa organic-inorganic.
Manyowa achilengedwe ndi feteleza wamankhwala, monga nayitrogeni, phosphorous, feteleza wa potashi kapena feteleza wapawiri.Feteleza wamankhwala omwe amagwiritsidwa ntchito kwambiri m'makampani obzala ndi awa: diammonium phosphate, urea, potaziyamu sulfate, potaziyamu chloride, ndi feteleza wosiyanasiyana.Feteleza wanthawi yayitali monga superphosphate atha kugwiritsidwanso ntchito pamtengo wa zipatso

(1) Feteleza wa nayitrojeni.Ndiko kuti, mankhwala feteleza ndi nayitrogeni zakudya monga chigawo chachikulu, monga urea, ammonium bicarbonate, etc. (2) Phosphate fetereza.Ndiko kuti, feteleza wamankhwala okhala ndi michere ya phosphorous monga gawo lalikulu, monga superphosphate.(3) Feteleza wa potaziyamu.Ndiko kuti, feteleza wamankhwala okhala ndi michere ya potaziyamu monga gawo lalikulu.Mitundu yayikulu imaphatikizapo potaziyamu chloride, potaziyamu sulphate, etc. (4) Manyowa a feteleza.Ndiye kuti, feteleza wokhala ndi zinthu ziwiri mwa zitatu za nayitrogeni, phosphorous ndi potaziyamu amatchedwa feteleza wamagulu awiri, ndipo feteleza wapawiri wokhala ndi zinthu zitatu za nayitrogeni, phosphorous ndi potaziyamu amatchedwa feteleza wapawiri.(5) Tsatirani feteleza feteleza ndi feteleza wina wapakatikati: akale monga feteleza okhala ndi zinthu monga boron, zinki, chitsulo, molybdenum, manganese, mkuwa, etc., ndi ena monga calcium, magnesium, sulfure ndi feteleza ena. .(6) Feteleza amene amapindulitsa mbewu zina: monga zitsulo slag pakachitsulo fetereza ntchito pa mpunga.

Feteleza granulation njira

1. Njira yogwedeza granulation
Kugwedeza granulation ndiko kulowetsa madzi enaake kapena binder mu ufa wonyezimira ndikuwusonkhezera moyenerera kuti madzi ndi ufa wonyezimira ukhale wolumikizana kwambiri kuti apange mphamvu yolumikizana kupanga ma pellets.Njira yosanganikirana yomwe imagwiritsidwa ntchito kwambiri ndi kutembenuka, kugudubuza ndi kugwa kwamtundu wa nsalu yotchinga ya disc, conical kapena cylindrical drum panthawi yozungulira.Malinga ndi akamaumba njira, zikhoza kugawidwa mu anagubuduza pellets, pellets wosanganiza ndi ufa agglomeration.Zipangizo zodziwika bwino zimaphatikizapo ng'oma zopangira ng'oma, ma granulator a mbale, zomangira ng'oma za cone, ma disc granulators, ng'oma granulators, kneaders, ng'oma zosakaniza, zosakaniza ufa ((nyundo, shaft ofukula) (mtundu, mtundu wa lamba), makina otsika a pellet, ndi zina zotero. njira yotsitsimutsa ndi yakuti zida zopangira zida zimakhala ndi dongosolo losavuta, makina amodzi ali ndi zotsatira zazikulu, ndipo particles zomwe zimapangidwira zimakhala zosavuta kusungunuka mwamsanga komanso zimakhala ndi mphamvu zowonongeka ndizomwe zimakhala zovuta kuti particles zikhale zovuta, ndipo zotsatira zake Mphamvu ya tinthu tating'onoting'ono ndi yotsika Pakali pano, mphamvu yopangira zida zamtunduwu imatha kufikira matani 500 / ola, ndipo m'mimba mwake imatha kufika mpaka 600 mm. chakudya ndi minda ina.

2. Njira yowiritsira granulation
Njira yowiritsira granulation ndiyo yabwino kwambiri pakati pa njira zingapo.Mfundo ndi ntchito mphepo kuwombedwa kuchokera pansi pa zipangizo tiwolokere ufa particles mu zonse kukhudzana ndi slurry sprayed kuchokera chapamwamba kutsitsi mfuti ndiyeno kugundana wina ndi mzake kuphatikiza mu particles.Tinthu tating'onoting'ono tomwe timapangidwa ndi njirayi ndife otayirira, osazungulira kwenikweni komanso kumapeto kwa pamwamba.Iwo ndi oyenera kupanga particles ndi zofunika otsika kapena chisanadze processing zina kukonzekera.Njira imeneyi ndi sintha yaing'ono m'mimba mwake pachimake yamphamvu kapena kudzipatula yamphamvu pakati pa m'munsi mwa otentha granulation yamphamvu, ndi kugawa mpweya m'dera otentha mpweya mpweya orifice mbale pansi kukhala lalikulu pakati. ndi zing'onozing'ono kumbali zozungulira, zomwe zimapangitsa kuti mpweya wotentha wapakati ukhale wochuluka kuposa madera ozungulira.Mothandizidwa ndi mphamvu zosiyanasiyana za mphepo, tinthu tating'onoting'ono timayandama kuchokera pakati pa chubu chapakati ndikukumana ndi zomatira zomwe zimapopera kuchokera kumfuti yatsitsi yomwe imayikidwa pakati pamunsi.Kenako amamangiriridwa ndi ufa womwe ukugwa kuchokera kumtunda ndikukhazikika kuchokera kunja kwa chubu chapakati kuti apange tinthu tating'onoting'ono.Amazungulira mmwamba ndi pansi kuti akwaniritse cholinga chopangitsa kuti tinthu tizikula mofanana.

3. Extrusion granulation njira
Extrusion njira panopa waukulu njira kukakamiza kupanga granulation mu dziko langa ufa mafakitale.Zida zowonjezera zowonjezera zimatha kugawidwa kukhala vacuum rod granulators, single (kawiri) screw extrusion granulators, makina osindikizira amitundu, ma plunger extruder, ma roller extruder, ndi zosakaniza zowerengera malinga ndi mfundo zawo zogwirira ntchito.Gear granulator, etc. Zida zamtunduwu zitha kugwiritsidwa ntchito kwambiri m'makampani a petrochemical, organic chemical industry, mafakitale abwino, mankhwala, chakudya, chakudya, feteleza ndi zina.Njirayi ili ndi ubwino wa kusinthasintha kwamphamvu, linanena bungwe lalikulu, kukula kwa tinthu yunifolomu, mphamvu ya tinthu yabwino, ndi mlingo waukulu wa granulation.