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Production method of sodium aluminum sulfate

Abstract

A production method for producing sodium aluminum sulfate takes aluminum sulfate and sodium sulfate as raw materials, and the concentration of a solution obtained by mixing the two raw materials is controlled as follows: containing Al2O36.5-8.5% of Na2SO47.2-11%; the crystallization temperature is-5-25 ℃, and the sodium aluminum sulfate industrial product is obtained by centrifugal separation. The product produced by the invention can replace aluminum ammonium sulfate, the production raw materials are easy to obtain, the cost is low, and the method has great popularization value.

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Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals
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CN1155516A

China

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Chinese
Inventor
李少强
Current Assignee
Individual
Worldwide applications
1996 CN
Application CN 96102630 events
1996-01-25
Application filed by Individual
1996-01-25
Priority to CN 96102630
1997-07-30
Publication of CN1155516A
Status
Pending
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Cited by (2)
Legal events
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Priority and Related Applications
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Description

The production method of aluminium sodium sulfate
The present invention relates to a kind of production method of Tai-Ace S 150 series products, relate to a kind of production method of aluminium sodium sulfate particularly.
Aluminium sodium sulfate is barren Tai-Ace S 150 series product in the world.At present, high-grade Tai-Ace S 150 is produced by the aluminium hydroxide method, and its cost is very high; The Tai-Ace S 150 of being produced by aluminium vanadine method is low-grade product, can not crystallization in solution separately because of Tai-Ace S 150, have the potassium aluminium sulfate produced with vitriolate of tartar and reacting aluminum sulfate in succession and with two kinds of middle-grade Tai-Ace S 150 series product of exsiccated ammonium alum of ammonium sulfate and reacting aluminum sulfate generation; Because the production cost of exsiccated ammonium alum is lower than potassium aluminium sulfate slightly, thereby it occupies dominant position in middle-grade Tai-Ace S 150 series product.
Purpose of the present invention promptly provides and a kind ofly can replace the production method that exsiccated ammonium alum is the low aluminium sodium sulfate product of production cost.
The present invention is with Tai-Ace S 150 (or its solution) and aluminium sodium sulfate (or its solution) hybrid reaction, and mixed liquid concentration is: contain Al 2O 36.5-8.5%, contain Na 2SO 47.2-11%; Tc is-5-25 ℃, and centrifugation promptly gets the aluminium sodium sulfate industrial goods.
The crystallization processes of aluminium sodium sulfate is an a great problem among the present invention, also is key of the present invention.The crystallization factor that influences aluminium sodium sulfate is a lot, as composition, concentration, the gradient of concentration, cooling temperature, the speed of cooling of solution, and magma solid-to-liquid ratio etc., if grasp is bad, the colloid that very easily causes aluminium sodium sulfate colloid or Tai-Ace S 150 to separate out separately.
Aluminium sodium sulfate, its chemical formula are Na 2SO 4Al 2(SO 4) 324H 2O, colourless translucent small-particle crystal, it is little sweet, puckery to distinguish the flavor of, and convergency is arranged, soluble in water, and it is acid that the aqueous solution is, and proportion is 1.62-1.65, is heated can lose crystal water gradually more than 40 ℃ and form white powder.
This product can be used as foodstuff additive, mordant, and the gluing of rubber condensing agent, leather tanning agent, finings, the manufacturing of high-quality aluminium hydroxide, high-grade paper, oil deodorization remove toner etc.
The aluminium sodium sulfate product that the present invention produces is compared with exsiccated ammonium alum, and aluminium content is close, and foreign matter content is low slightly, but production cost will hang down more than 15%.
With the aluminium sodium sulfate product that method of the present invention is produced, appearance looks elegant, water-soluble speed is very fast, and its production cost is lower than similar Tai-Ace S 150 series products again in addition, so have great promotional value.If in existing Tai-Ace S 150 factory, produce the aluminium sodium sulfate product, only need to increase several crystallizers and several separating devices, the annual aluminium sodium sulfate that just can produce up to ten thousand tons is realized huge economic benefit.
Accompanying drawing is the process flow sheet of the production aluminium sodium sulfate of embodiment 3.
Below in detail embodiments of the invention will be described in detail:
Embodiment 1: add alum liquor earlier and (contain Al in material-compound tank (I) 2O 38-8.5%) 2 meter 3Add 240-260kgNa again 2SO 4(its mixed liquid concentration is Al in 80-100 ℃ of reaction 2O 37.5-8.1%, Na 2SO 48.4-9.1%); Be cooled to 35 ℃ and put into crystallizer (IV), promptly get the aluminium sodium sulfate industrial goods through centrifugation in 15-25 ℃ of crystallisation by cooling.
Embodiment 2: the Na for preparing 20%-22% in material-compound tank (II) earlier 2SO 42 meters of solution 3, (its mixed liquid concentration is: contain Al 80-100 ℃ of reaction to add Tai-Ace S 150 2.5-2.7 ton again 2O 37.8-8.4%, contain Na 2SO 49.6-10.5%); Be cooled to 35 ℃ and put into crystallizer (IV) in 15-25 ℃ of crystallizations, centrifugation promptly gets the aluminium sodium sulfate industrial goods.
Embodiment 3: add alum liquor earlier and (contain Al in material-compound tank (I) 2O 38.4-9%) 2 meters 3The back adds 150kgNa 2SO 4, from material-compound tank (II), extract the Na of 20-22% again out 2SO 40.45 rice 3(its mixed liquid concentration is: contain Al in 70-90 ℃ of reaction in material-compound tank (I) 2O 36.6-7.2%, contain Na 2SO 47.2-7.8%); Be cooled to 40 ℃, again jar (I) solution all be extracted in the crystallizer (IV), by extracting 3.8 meters out in the material-compound tank (III) 3Prepare batch filtrate (temperature is controlled in 20-40 ℃) in crystallizer (IV) of going up of (concentration is close with jar III).Thereafter slow crystallisation by cooling, temperature is controlled in-5-18 ℃.Carry out coarse filtration after crystallization is finished, in filtrate part suction material-compound tank (III), another part enters and is added in the material-compound tank (III) after evaporating pot (V) concentrates again, and the centrifugation crystallization promptly gets the aluminium sodium sulfate industrial goods.

Claims (1)
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  1. A kind of method of producing aluminium sodium sulfate is characterized in that: with Tai-Ace S 150 (or its solution) and aluminium sodium sulfate (or its solution) hybrid reaction, mixed liquid concentration is: contain Al 2O 36.5-8.5%, contain Na 2SO 47.2-11%; Tc is-5-25 ℃, the centrifugation crystallisate.

Cited By (2)

Publication number Priority date Publication date Assignee Title
CN103172099A * 2011-12-21 2013-06-26 淄博鑫美宇氧化铝有限公司 Method for producing high purity aluminum ammonium sulfate by using industrial aluminum sulfate and industrial ammonium sulfate
CN105293796A * 2015-02-15 2016-02-03 广西隆安瑞丰工贸有限公司 Method for co-production of sodalumite and gypsum through activated clay production mother liquid
Family To Family Citations
* Cited by examiner, † Cited by third party, ‡ Family to family citation

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Priority And Related Applications

Priority Applications (1)

Application Priority date Filing date Title
CN 96102630 1996-01-25 1996-01-25 Production method of sodium aluminum sulfate

Applications Claiming Priority (1)

Application Filing date Title
CN 96102630 1996-01-25 Production method of sodium aluminum sulfate

Legal Events

Date Code Title Description
1997-07-30 C06 Publication
1997-07-30 PB01 Publication
1999-11-10 C01 Deemed withdrawal of patent application (patent law 1993)
1999-11-10 WD01 Invention patent application deemed withdrawn after publication

Concepts

machine-extracted
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Name Image Sections Count Query match
manufacturing process title,abstract,description 13 0.000
n-[(2r,3r)-1,3-dihydroxyoctadecan-2-yl]tetracosanamide title,abstract 3 0.000
aluminium sulfate (anhydrous) claims,abstract,description 16 0.000
method claims,abstract,description 7 0.000
sodium aluminium sulfate claims,description 20 0.000
sodium claims,description 8 0.000
liquid claims,description 6 0.000
centrifugation claims,description 5 0.000
crystallisation abstract,description 9 0.000
crystallization abstract,description 7 0.000
raw material abstract 3 0.000
sodium sulfate abstract 2 0.000
4-methylsulfanyl-2-[(2-methylsulfanylpyridine-3-carbonyl)amino]butanoic acid abstract 1 0.000
Na2SO4 abstract 1 0.000
Sodium Sulfate abstract 1 0.000
aluminium oxide abstract 1 0.000
corundum abstract 1 0.000
separation method abstract 1 0.000
sodium sulphate abstract 1 0.000
yogo sapphire abstract 1 0.000
Show all concepts from the description section