Extraction of Aluminium in Fly Ash
There are three main types of extraction of Aluminium:
(1) Sulfuric acid refining: 1. The fly ash is ground and calcined and activated, and then leached by sulfuric acid and concentrated to obtain aluminum sulfate crystals; 2. after calcination, an alkaline solution is added; 3. using iron removal technology, Aluminum hydroxide is obtained; 4. It is then calcined and aluminium is obtained. Because sulfuric acid has strong acidity and volatility, it not only poses a threat to the safety of operators, but also pollutes the environment. Therefore, pay attention to safety during the operation.
(2) Refining ammonium aluminum sulfate: 1. Grinding fly ash and mixing with ammonium sulfate, then calcining at high temperature; 2. Leaching with sulfuric acid and filtering; 3. Using ammonia water to make the pH of the filtrate to about 2.0, then Aluminium ammonium sulfate crystals were precipitated; 4. Sulfuric acid was added at 60 ° C and cooled to precipitate all crystals. And repeated operations 3 times to obtain ammonium aluminum sulfate; 5. The product is thermally decomposed to obtain aluminium. This method can obtain aluminium with higher purity.
(3)Fluorine ammonium refining: 1. Mix fly ash with ammonium fluoride (acidic) solution and heat to obtain crude alumina; 2. Add alkaline solution, then pass carbonation and pyrolysis to obtain purer aluminium. This method has a large extraction rate, but the cost is high.
With a solid thirteen-year history of growth and expansion, SINOFLOChas become a leading manufacturer and supplier of water-soluble superabsorbent polymers in China. Founded in 2003 and expanded production capacity since 2009, now we have 2 facilities with the flocculants and coagulants capacity of 90,000 MT annually.
Send product request
Other supplier products
 |
Superabsorbent | Applications of Super Absorbent Polymers in Agriculture Superabsorbent SINOFLOC superabsorbent polymers (known as SAP) are water-insoluble poly... |
 |
Coagulants | SINOFLOC offers an extensive range of organic coagulantssuch as polyamine, polyDADMAC and decoloring agent. Our products, being the cationic coagul... |
 |
Red Mud Settling Flocculants | SINOFLOCred mud setting flocculants is used for settling aluminum red mud slurries in alumina plants, which provide high settling rates, better sep... |
 |
Coagulants | SINOFLOCoffers an extensive range of organic coagulantssuch as polyamine, polyDADMAC and decoloring agent. Our products, being the cationic coagula... |
 |
Cationic Flocculants for Municipal Wastewater Treatment | cationic polymer for sludge dewatering cationic flocculant factory cationic polyacrylamide for wastewater cationic polymer flocculant/ polymer f... |
Same products
 |
Easy-cleaning Silicone-Modified Waterborne UV Resin | Seller: Guangzhou Human New Material Science and Technology Co., Ltd | LUV533 is a high-performance, silicone-modified hexafunctional waterborne UV resinengineered to d... |
 |
Water-based Soft-Touch Resin for Consumer Electronics | Seller: Guangzhou Human New Material Science and Technology Co., Ltd | Water-based Soft-Touch Resinis an advanced coating material formulated to deliver a luxurious, ve... |
 |
Conformal Coatings | Seller: Guangzhou Human New Material Science and Technology Co., Ltd | The conformal coatingsprovide good adhesion to metal, PCB and other substrates after curing at ro... |
 |
Metalized & Laser Transfer coating | Seller: Guangzhou Human New Material Science and Technology Co., Ltd | Metallized and laser transfer coatingsare designed with sustainability in mind, ensuring minimal ... |
 |
Hydrophilic coatings for Air Conditioner | Seller: Guangzhou Human New Material Science and Technology Co., Ltd | A water-based coating combination applied on the surface of aluminum foil, which forms a layer wi... |
