A kind of technique of continuous production cesium rubidium alum and potassium alum

A kind of technique of continuous production cesium rubidium alum and potassium alum

  • CN 105,366,701 B
  • Filed: 11/06/2015
  • Issued: 10/01/2019
  • Est. Priority Date: 11/06/2015
  • Status: Active Grant
First Claim
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1. a kind of technique of continuous production cesium rubidium alum and potassium alum, which comprises the following steps:

  • (1) vacuum cooled crystallizes;

    will carry out 2 or 3 effect vacuum cooled crystallizations containing the sulfate hot mother liquor of caesium, rubidium, potassium, aluminium, obtains caesiumRubidium alum magma;

    In the 2 effect vacuum cooled crystallization, the first effect vacuum-cooling-crystallization temperature is 50~60 DEG C, and vacuum degree is0.0123~0.020 MPa;

    Second effect vacuum-cooling-crystallization temperature is 30~50 DEG C, and vacuum degree is 0.0042~0.0123MPa;

    It is described 3 effect vacuum cooled crystallization in, first effect vacuum-cooling-crystallization temperature be 70~85 DEG C, vacuum degree be 0.031~0.058MPa;

    Second effect vacuum-cooling-crystallization temperature is 45~60 DEG C, and vacuum degree is 0.0096~0.020MPa;

    Third imitates vacuumCrystallisation by cooling final temperature is 30~45 DEG C, and vacuum degree is 0.0042~0.0096MPa;

    The sulfate heat containing caesium, rubidium, potassium, aluminiumCaesium in mother liquor, rubidium, potassium, aluminium mass concentration be respectively 0.05~2.60 wt%, 0.05~0.50 wt%, 1~3 wt%, 1.2~7.0 wt%;

    (2) cesium rubidium alum magma is centrifugated;

    cesium rubidium alum magma obtained by step (1) being centrifuged, thick cesium rubidium alum and mother are obtainedLiquid;

    (3) it recrystallizes;

    thick cesium rubidium alum obtained by step (2) is repeated into the cooling recrystallization of thermosol, multiple-effect vacuum and centrifuge separation,Obtain cesium rubidium alum product;

    (4) it is cold that potassium alum content >

    =6wt% mother liquor obtained by step (2) multiple-effect forced circulation freezing and crystallizing;

    is sent into forced circulationFreeze crystallizer, carry out 2~4 effect forced circulation freezing and crystallizings by fair current process, the temperature of end effect magma is -20~0 DEG C, and it is bright to obtain potassiumAlum magma;

    (5) potassium alum magma is centrifugated;

    potassium alum magma obtained by step (4) is centrifugated, it is dry, and obtain potassium alum product.

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