PL37552B1 - - Google Patents

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Publication number
PL37552B1
PL37552B1 PL37552A PL3755254A PL37552B1 PL 37552 B1 PL37552 B1 PL 37552B1 PL 37552 A PL37552 A PL 37552A PL 3755254 A PL3755254 A PL 3755254A PL 37552 B1 PL37552 B1 PL 37552B1
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PL
Poland
Prior art keywords
soda
potassium salts
potassium
dust
instead
Prior art date
Application number
PL37552A
Other languages
Polish (pl)
Filing date
Publication date
Application filed filed Critical
Publication of PL37552B1 publication Critical patent/PL37552B1/pl

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Description

Dotychczas nawozy fosforowe, np. supertoma- syne, otrzymuje sie przez spiekanie w piecach obrotowych apatytu (z dodatkliem sody. Sode mozna zastapic czesciowo kwasnym weglanem sodu lub tez zamiast sody mozna stosowac siar¬ czan sodu lub potasu. Dodatek soli potasowych do apatytu zezwala na otrzymanie podwójnego zwiazku fosforowo-potasowego latwiej przyswa¬ jalnego przez rosliny.Wedlug wynalazku zamiast sody stosuje sie pyl uzyskany przy odpylaniu kominów pieców obrotowych cementami. Pyl ten o srednicy cza¬ steczek ponizej 30/x, zawierajacy okolo 70°/o siar¬ czanu potasu, uzyskuje sie w odpylniku od- srodkowo-zwrotnym po uprzednim przepuszcze¬ niu spalin przez separator wirowy. PLUntil now, phosphorus fertilizers, such as super-extracts, are obtained by sintering apatite in rotary kilns (with the addition of soda. Soda can be replaced with partially acidic sodium carbonate or sodium or potassium sulphate can be used instead of soda). The addition of potassium salts to apatite allows for to obtain a double phosphorus-potassium compound, more easily assimilable by plants. According to the invention, instead of soda, the dust obtained during the dedusting of rotary kiln chimneys with cements is used. This dust with a particle diameter of less than 30%, containing about 70% of potassium sulphate , is obtained in a centrifugal collector after passing the flue gases through a vortex separator.

Claims (1)

1. Zastrzezenie patentowe Sposób otrzymywania nawozów fosforowo-po- tasowych przez spiekanie fosforytów z soda lub z solami potasowymi, znamienny tym, ze za¬ miast sody lub soli potasowych stosuje sie pyl o frakcji ponizej 30jw, uzyskany z odpylania pie¬ ców obrotowych cementowni. Akademia Górniczo-Hutnicza Zastepca: Kolegium RzeczniJków Patentowych *) Wlasciciel patentu oswiadczyl, ze twórcami wynalazku sa Roman Andrzejewski, Jan Grzyw- nowicz i Kaziimerz Mikula. PL1. Patent claim A method of obtaining phosphorus-potassium fertilizers by sintering phosphate rock with soda or with potassium salts, characterized in that, instead of soda or potassium salts, dust with a fraction of less than 30 mw, obtained from dust removal from rotary kilns of cement plants, is used. AGH University of Science and Technology Deputy: Collegium of Patent Agents *) The owner of the patent stated that the inventors were Roman Andrzejewski, Jan Grzywnowicz and Kaziimerz Mikula. PL
PL37552A 1954-04-26 PL37552B1 (en)

Publications (1)

Publication Number Publication Date
PL37552B1 true PL37552B1 (en) 1954-08-15

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