Triple superphosphate hauv Phosphate Fertilizers
Triple superphosphate (TSP), Nws yog tsim los ntawm concentrated phosphoric acid thiab av phosphate pob zeb. Nws yog ib tug high concentration dej soluble phosphate fertilizer, thiab dav siv rau ntau cov av. Nws tuaj yeem siv los ua cov chiv chiv, chiv ntxiv, cov chiv chiv thiab cov khoom siv raw rau kev tsim cov chiv chiv.
TSP yog ib tug high-concentration, dej-soluble ceev-acting phosphate fertilizer, thiab nws cov ntsiab lus phosphorus zoo yog 2.5 mus rau 3.0 npaug ntawm cov calcium zoo tib yam (SSP). Cov khoom tuaj yeem siv los ua cov chiv chiv, hnav khaub ncaws sab saum toj, cov noob chiv thiab cov khoom siv raw rau kev tsim cov chiv chiv; dav siv nyob rau hauv nplej, nplej, pob kws, sorghum, paj rwb, txiv hmab txiv ntoo, zaub thiab lwm yam zaub mov qoob loo thiab economic qoob loo; dav siv hauv av liab thiab daj, xim av av, daj fluvo-aquic av, dub av, cinnamon av, ntshav av, albic av thiab lwm yam av zoo.
Tau txais kev siv tshuaj tshuaj ib txwm siv (Den method) rau kev tsim khoom.
Phosphate pob zeb hmoov (slurry) reacts nrog sulfuric acid rau kua-khoom sib cais kom tau ntub-txheej txheem dilute phosphoric acid. Tom qab cov concentration, concentrated phosphoric acid tau txais. Concentrated phosphoric acid thiab phosphate pob zeb hmoov yog tov (tshuaj tsim), thiab cov ntaub ntawv tshuaj tiv thaiv yog stacked thiab matured, granulated, qhuav, sieved, (yog tias tsim nyog, anti-caking pob), thiab txias kom tau cov khoom.
Superphosphate, tseem hu ua superphosphate zoo tib yam, yog phosphate chiv ncaj qha los ntawm decomposing phosphate pob zeb nrog sulfuric acid. Cov khoom siv tseem ceeb yog calcium dihydrogen phosphate hydrate Ca (H2PO4) 2 · H2O thiab ib qho me me ntawm cov phosphoric acid dawb, nrog rau cov calcium sulfate anhydrous (paub rau sulfur tsis muaj av). Calcium superphosphate muaj 14% ~ 20% zoo P2O5 (80% ~ 95% ntawm uas yog soluble hauv dej), uas belongs rau cov dej-soluble ceev acting phosphate fertilizer. Grey los yog grey dawb hmoov (los yog hais) tuaj yeem siv ncaj qha ua phosphate chiv. Nws kuj tseem siv tau los ua ib qho khoom siv rau kev ua cov chiv sib xyaw.
Ib qho tsis muaj xim lossis lub teeb grey granular (los yog hmoov) chiv. Solubility feem ntau yog yooj yim soluble nyob rau hauv dej, thiab ob peb yog insoluble nyob rau hauv dej thiab yooj yim soluble nyob rau hauv 2% citric acid (citric acid tov).