CN1028220C - Method for producing aluminum sulfate from gangue - Google Patents
Method for producing aluminum sulfate from gangue Download PDFInfo
- Publication number
- CN1028220C CN1028220C CN91110937.4A CN91110937A CN1028220C CN 1028220 C CN1028220 C CN 1028220C CN 91110937 A CN91110937 A CN 91110937A CN 1028220 C CN1028220 C CN 1028220C
- Authority
- CN
- China
- Prior art keywords
- coal gangue
- clear liquid
- ace
- sulfuric acid
- basicity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/68—Aluminium compounds containing sulfur
- C01F7/74—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The present invention relates to a method for producing aluminium sulfate from coal gangue, which comprises the following steps: coal gangue is ground into powder and directly mixed with sulfuric acid of which the concentration is 40 to 70%(weight) in a reactor without being baked; the coal gangue and the sulfuric acid are stirred and heated through steam so that the pressure in the reactor is 3.5 to 8KG / square centimeter; the coal gangue reacts with the sulfuric acid for 4 to 6 hours, is sedimentated and concentrated to crystallize after slag is removed, and therefore, white block solid is obtained. The quality of the obtained product conforms to the refining primary standard of the HCl-32-77. The coal gangue of the present invention does not need to be baked; therefore, the present invention has the advantages of simple technology, energy saving and pollution abatement, and is very suitable for production in small and medium-sized enterprises and township enterprises.
Description
The present invention relates to a kind of production method of vitriol of aluminium, specifically belong to a kind of method of producing Tai-Ace S 150 with coal gangue.
Coal gangue is the discarded thing in colliery, and pile up like a mountain in each mining area, and not only appropriation of land, and contaminate environment becomes social big public hazards.In order to turn harm into good, people have proposed the several different methods of comprehensive utilization coal gangue.A kind of method of producing Tai-Ace S 150 with coal gangue is disclosed as Chinese patent CN1048687A, this method is carried out roasting, pulverizing with coal gangue, add sulfuric acid, reaction is 1.5-2 hour under the condition of 120-140 ℃ of temperature, 2-3 kilogram/cm2 pressure, precipitation removes slag, concentrate, crystallization, its quality product reaches the rough secondary standard requirement of HC1-32-77.This method is owing to adopt roasting to come aluminum oxide contained in the active coal gangue, and not only temperature is wayward during the roasting coal gangue, and complicated operation, labour intensity are big, and waste energy, contaminate environment, the products obtained therefrom quality is low.
The object of the present invention is to provide the method for producing Tai-Ace S 150 with coal gangue that a kind of technology is simple, save that energy consumption, subduction are polluted, the products obtained therefrom quality is higher.
Method of producing Tai-Ace S 150 with coal gangue provided by the present invention, feature is that colliery powder is broken into powdery, one ship is ground into 60-80 purpose screen underflow, with it is 40-70%(weight with concentration directly) sulfuric acid in reactor, mix, stir, it is 3.5-8 kilogram/square centimeter that logical steam intensification makes reactor pressure, constant voltage reaction 4-6 hour, sedimentation is removed slag, get its clear liquid and be neutralized to no free acid, again with the clear liquid evaporation concentration to 110-120 ℃ cool off, crystallization.Gained Tai-Ace S 150 product reaches the refining first grade standard of HG1-32-77.
The clear liquid of getting of the present invention is neutralized to no free acid, is meant in the clear liquid if there is free acid to exist, and promptly neutralizes also available alkaline matter such as NaOH, Ca(OH with the bigger reaction solution of basicity as adjusting agent)
2, Al(OH)
3Deng neutralizing, make in the clear liquid till the no free acid; When if basicity is excessive in the clear liquid, then neutralize as the adjustment agent with sulfuric acid, make that basicity reaches till the minimum in the clear liquid.In order to guarantee quality product and to produce economically, neither allow free acid to exist in the reaction solution in a word, again can not basicity excessive.
In reaction process,, in reaction solution, add materials such as small amount of flocculant such as polyacrylamide for the settling velocity of accelerated reaction liquid.
Compared with prior art, the present invention adopts the way of direct compressive reaction, has saved the step of roasting coal gangue, not only saves the energy, subduction pollution, and has simplified technology, has improved quality product.The present invention is well suited for medium-sized and small enterprises and township and village enterprises produces.
Embodiment:
Get the 20 kilograms of unfired colliery powder of 60-80 purpose (Shuozhou, Shanxi coal gangues, salic 30%), joining 100 liters wards off in the plumbous reactor, add 10 kg of water and 15 kilograms of industrial sulphuric acids then, stir, it is 6 kilograms/cubic centimetre that logical steam is warming up to pressure, constant voltage 4 hours, after the step-down, emit reaction solution, be diluted with water to Be
1=35, add 20 gram flocculation agent polyacrylamides, sedimentation is removed slag, and clear liquid is evaporated to 115 ℃ emits, and crystallisation by cooling gets white blocks of solid.Product by analysis, the result is as follows:
The smart sample of the present invention of project HG1-32-77
The system primary standard
Aluminum oxide (Al
2O
3) % 〉=15.70 15.80
Ferric oxide (Fe
2O
3) %≤0.35 0.31
Free acid (H
2SO
4) do not have
Water-insoluble 5%≤0.10 0.08
Claims (4)
1, a kind of method of producing Tai-Ace S 150 with coal gangue, be characterised in that colliery powder is broken into powdery, be that the sulfuric acid of 40-70% (weight) mixes in reactor directly with concentration, stir, logical steam heats up and makes reactor pressure is 3.5-8 kilogram/square centimeter, and constant voltage 4-6 hour, sedimentation was removed slag, get its clear liquid and be neutralized to no free acid, again with the clear liquid evaporation concentration to 110-120 ℃ cool off, crystallization.
2, according to the described method of producing Tai-Ace S 150 of claim 1 with coal gangue, be characterised in that in the clear liquid promptly to neutralize as adjusting agent with the bigger reaction solution of basicity if there is free acid to exist, make till its no free acid.
3, according to the described method of producing Tai-Ace S 150 of claim 1 with coal gangue, it is characterized in that in the clear liquid then neutralizing as the adjustment agent with sulfuric acid when if basicity is excessive, make that basicity reaches till the minimum in the clear liquid.
4, according to claim 1 and 2 or 3 described methods of producing Tai-Ace S 150, be characterised in that colliery powder is broken into 60-80 purpose screen underflow with coal gangue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91110937.4A CN1028220C (en) | 1991-11-22 | 1991-11-22 | Method for producing aluminum sulfate from gangue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91110937.4A CN1028220C (en) | 1991-11-22 | 1991-11-22 | Method for producing aluminum sulfate from gangue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1072657A CN1072657A (en) | 1993-06-02 |
| CN1028220C true CN1028220C (en) | 1995-04-19 |
Family
ID=4910351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91110937.4A Expired - Fee Related CN1028220C (en) | 1991-11-22 | 1991-11-22 | Method for producing aluminum sulfate from gangue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1028220C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070823C (en) * | 1998-06-14 | 2001-09-12 | 新疆工学院 | Selective dissolving process for preparing aluminium sulfate |
| CN105858695A (en) * | 2016-04-04 | 2016-08-17 | 王嘉兴 | Preparation method of aluminum sulfate |
-
1991
- 1991-11-22 CN CN91110937.4A patent/CN1028220C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1072657A (en) | 1993-06-02 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |