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The purification of pre-concentrated up to 80 wt.% H 3 PO 4 phosphoric acid (PA) obtained from Kola apatite in one of the Polish plants by the wet processing route was carried out by sulphate precipitation, desorption of volatile components (SiF 4 , HF) and liquid-liquid extraction method using 4-methyl-2-pentanone (MIBK). The experiment was carried out on a laboratory scale...
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