Process for treating mirabilite liquid

A treatment process and technology for nitric water, applied in the directions of alkali metal sulfites/sulfites, alkali metal compounds, inorganic chemistry, etc., can solve the problems of shortened production process flow, excessive storage equipment, etc., and achieve reasonable distribution of filter holes , the effect of simple restoration and long service life
CN101844780AInactive Publication Date: 2010-09-29四川省川眉芒硝有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
四川省川眉芒硝有限责任公司
Publication Date
2010-09-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a process for treating mirabilite liquid. The process comprises the following steps of: removing mechanical impurities in 35.8 to 36.2 percent original mirabilite liquid which is delivered underground under the monitoring of a DCS automatic monitoring system and the regulation and control of an AK liquid balancing flow meter of which the metering error is between 0.0001 and 0.0002 m<3> / h by using a three to six-stage pipeline filter; and refining and purifying the original mirabilite liquid of which the mechanical purities are removed by using an eight to twelve-stage ion exchanger to prepare mirabilite liquid of which metal ion impurity content is less than 1 ppm so as to obtain refined mirabilite liquid for meeting the production and the application of a variety of mirabilite.
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Description

Technical field:

[0001] The invention belongs to the field of inorganic chemical finishing. Background technique:

[0002] The traditional Glauber's salt water refining process is: the salt water is filtered to remove mechanical impurities, chemical raw materials are added to chemically treat metal ion impurities, and flocculants are added to settle, and then refined salt water is filtered.

[0003] In Chinese Patent No. CN101041444A, a method for separating Glauber's salt (sodium sulfate) by freezing and crystallizing in saline solution is introduced. It undergoes pH adjustment, precooling, control of the crystallization temperature at 0-10° C., separation, and recrystallization to make a finished product. The technological process adopted in this method is actually to make saltwater into Glauber's salt containing crystal water first, then remove the free water in Glauber's salt, and finally obtain the production process of Glauber's salt containing crystal water; Glauber'...

Claims

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