Method for producing coarse-grain special mirabilite

A manufacturing method and coarse particle technology, applied in chemical instruments and methods, alkali metal sulfite/sulfite, alkali metal compounds, etc., can solve the problems of particle unevenness, agglomeration, inconvenient use, etc., and achieve particle flow good sex effect
CN101428828AInactive Publication Date: 2009-05-13四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
2009-05-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing coarse granule special type saltcake, which includes the following technical steps: pumping hot water at 40-70 DEG C by a pump, and forming a saltcake solution containing a plurality of impurities; concentrating for crystallization by vacuum evaporation after refining impurities; obtaining a supersaturated solution containing saltcake crystals, keeping the temperature at 10-120 DEG C, and aging for 0.5-3.0 hours; drying after centrifugal separation, processing by a fluidized bed, separating fine granule saltcake and obtaining coarse granule special type saltcake. The anhydrous coarse granule special type saltcake product obtained by the process method of the invention has the advantages of good granule fluidness and low possibility of agglomeration. The product can be widely used for preparing sodium sulfide, sodium silicate and the like, and is also used in industries of paper making, glass, printing and dyeing, synthetic fiber, hide manufacture, food, medicine and the like.
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Description

Technical field:

[0001] The invention belongs to the field of fine processing of inorganic chemicals, or the field of fine chemicals. Background technique:

[0002] Sodium sulfate decahydrate is Glauber's salt, Glauber's salt (Na 2 SO 4 10H 2 O), English name: Sodiumsulfate, Sodium sulfate, anhydrous Thenardite, containing 55.9% of crystal water and 44.1% of sodium sulfate. Pure mineral contains Na 2 O 19.3%, SO 3 24.8%. Monoclinic crystal system, usually in the form of granular and massive, and also in the form of shell or film. Colorless and transparent, impurities will dye it into gray, gray green, light yellow, milky white, black and so on. Vitreous luster. Streaks white. Hardness 1.5~2.0. The specific gravity is 1.48. It has a slightly bitter and salty taste. It loses water of crystallization at 100°C. It gradually loses water in dry air and turns into white powder anhydrous Glauber's salt. When burning, the flame is dark yellow. Soluble in water and glyc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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