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Způsob výroby sráženého uhličitanu vápenatého
CS241827B1
Czechoslovakia
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English - Inventor
Vladimir Glaser Jan Vidensky
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Description
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Claims (2)
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- předmet1. Způsob výroby sráženého uhličitanui vápenatého, případně ve směsi s hexahydrátem uhličitanu vápenatého nebo/a uhličitanem hořečnatým :nebo/a některým z hydrátů uhličitanu hořečnatého nebo/a hydroxidu hořečnatébo, z dusičnanu vápenatého produkovaného při výrobě NPK- nebo NP-hnojiv vymrazovací technologií, obsahujícího' hydraitovanou nebo bezvodou formu dusičnanu vápenatého, vyznačující se tím, že dusičnan vápenatý se smísí s amnniavynalezu kem nebo/a hydroxidem amonným nebo/a s oxidem nebo/a hydroxidem vápenatým, které mohou být ve směsi s oxidem nebo/a hydroxidem hořečnatým, oddělí se tuhá fáze, produkt se vysráží pomocí oxidu uhličitého a amoniaku nebo/a hydroxidu amonného a ze vzniklé suspenze se oddělí, promyje a vysuší.
- 2. Způsob podle bodu 1 vyznačující se tím, že dusičnan vápenatý se po oddělení tuhé fáze překrystaluje.