PL55451B1

PL55451B1 -

Info

Publication number: PL55451B1
Application number: PL114517A
Authority: PL
Inventors: dr Eugeniusz Blasiak prof.; Henryk Sikora dr; inz. Zygmunt Rost mgr; Nowak Feliks
Original assignee: Zaklady Azotowe Im Pawla Findera
Filing date: 1966-05-11
Publication date: 1968-04-25

Description

Dodatnia strona takiego filtru jest równiez stosunkowo maly ciezar nasypowy wynoszacy ponizej 1 kg na 1 litr, co umozliwia stosowanie grubszych warstw zloza adsorpcyjnego, co z kolei ulatwia lepsze wychwyty¬ wanie platyny, oraz pozwala w dogodniejszy spo¬ sób rozwiazac konstrukcje rusztów podtrzymuja¬ cych.Przyklad. Do 100 kg rozdrobnionego i zlaso- wanego wapna palonego dodaje sie 6 kg wodoro¬ tlenku sodowego, nastepnie mieszanine te granu¬ luje sie w znany sposób do granulek o srednicy 8 mm i poddaje suszeniu. Otrzymane granulki ad¬ sorbentu platyny poddaje sie wyprazeniu w piecu sluzacym do utleniania amoniaku lub tez poza nim.Prazenie prowadzi sie w temperaturze 800°C. Po¬ woduje ono ulatnianie sie zwiazków metali alka¬ licznych, wzrost porowatosci adsorbentu, a tym 5 samym jego powierzchni calkowitej. Ciezar na¬ sypowy tak otrzymanego wapna wynosi 900 g na litr. io PLThe positive side of such a filter is also the relatively low bulk density of less than 1 kg per liter, which allows the use of thicker layers of the adsorbent bed, which in turn facilitates a better capture of platinum, and allows for a more convenient design of the supporting grate structures. Example. 6 kg of sodium hydroxide are added to 100 kg of crushed and slaked quicklime, then the mixture is granulated in a known manner to granules of 8 mm in diameter and dried. The resulting platinum adsorbent pellets are calcined in an ammonia oxidation furnace or outside it. The calcination is carried out at a temperature of 800 ° C. It causes the volatilization of alkali metal compounds, increasing the porosity of the adsorbent, and thus its overall surface. The poured weight of the lime thus obtained is 900 g per liter. io PL

Claims

Claims 1. A method for obtaining a filter for capturing platinum containing alkaline earth metal oxides, characterized in that carbonate oxides are introduced into the mixture of oxides, hydroxides, carbonates or other alkaline earth metal compounds which are decomposed into oxides at elevated temperature. , hydroxides or other alkali metal compounds which decompose and volatilize at elevated temperatures, and the mixture, after granulation, is crushed at a temperature of 500 to 1000 ° C until the alkali metal compounds are sublimated. 2. The method according to claim The method of claim 1, wherein 2-10% by weight of alkali metal compounds are incorporated into the mixture of alkaline earth metal compounds. 3. The method according to p. The process of claim 1, wherein the calcination of the granules is carried out in an ammonia oxidation oven. Krak.

1.z. 162 IV. 1968 - 330 * \ PL