Drying process for thenardite

Drying process for thenardite

The invention relates to a drying process for thenardite. The process comprises the following steps of: removing mechanical impurities from original mirabilite liquid with a certain concentration conveyed underground flow by using a pipeline filter and refining and purifying the original mirabilite...

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Hauptverfasser: ZHANG DAMING, LIU WENLIANG, LIU ZEMIN, LI CHUNXIAN, GOU XINGWU, LI HONGQING, LI DONGLIANG
Format: Patent
Sprache:chi ; eng
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CHEMISTRY
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM
INORGANIC CHEMISTRY
METALLURGY
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creator ZHANG DAMING
LIU WENLIANG
LIU ZEMIN
LI CHUNXIAN
GOU XINGWU
LI HONGQING
LI DONGLIANG
description The invention relates to a drying process for thenardite. The process comprises the following steps of: removing mechanical impurities from original mirabilite liquid with a certain concentration conveyed underground flow by using a pipeline filter and refining and purifying the original mirabilite liquid by using an ion exchanger under the monitoring of a DCS automatic monitoring system and the control of an AK liquid balancing flow meter to obtain refined mirabilite liquid with extremely low impurity content; inputting the refined mirabilite liquid into a continuous crystallizing process system; continuously performing solid-liquid separation by using a first-stage centrifugal machine to obtain mirabilite crystal; and inputting the mirabilite crystal into a multi-stage spiral vacuum drying machine for drying and removing water moisture so as to obtain the thenardite which contains 0.01 to 0.03 percent of free water.
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subjects CHEMISTRY
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM
INORGANIC CHEMISTRY
METALLURGY
title Drying process for thenardite
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