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.
Отправить запрос, связаться с поставщиком
Другие товары поставщика
Oilfield Chemicals | SINOFLOC supplies our customers a wide range of product portfolio in the oilfield industry. In addition to our standard , we are also supplying cus... | |
Coagulants | SINOFLOC offers an extensive range of organic coagulantssuch as polyamine, polyDADMAC and decoloring agent. Our products, being the cationic coagul... | |
Amphoteric Flocculants | SINOFLOC amphoteric flocculants are partially hydrolyzed polyacrylamide with high molecular weight. This amphoteric polyacrylamide is easily to rem... | |
Superabsorbent for Agriculture | The demand of conserving water resources is increasing along with the shortage of water resources all over the world. As one of the leading Superab... | |
Enhanced Oil Recovery (EOR) | SINOFLOC manufactures a complete range of anionic polyacrylamide for . Our chemicals for Polymer Flooding, long chain polyacrylamide molecules mixe... |
Похожие товары
PakGent CL-F025P T25 Cell Culture Flask | Продавец: PakGent Bioscience (Suzhou) Co., Ltd. | PS, 25cm², TC treated. With a generous 25 cm² surface area, these T25 cell culture fla... | |
PakGent Cryogenic Boxes | Продавец: PakGent Bioscience (Suzhou) Co., Ltd. | Cryogenic boxes are special temperature-controlled storage containers used to store and transport... | |
PakGent STSS-509CG clear plastic tubes with end caps | Продавец: PakGent Bioscience (Suzhou) Co., Ltd. | Self standing, with O-ring, clear tube with green cap. The PakGent STSS-509CG clear plastic tube... | |
PakGent NMPB500A Brown Plastic Medicine Bottles | Продавец: PakGent Bioscience (Suzhou) Co., Ltd. | 500ml packaging bottle, amber. PakGent NMPB500A Brown Plastic Medicine Bottlesoffer secure sto... | |
PakGent PT-5000B-T Thermo Scientific Art Tips | Продавец: PakGent Bioscience (Suzhou) Co., Ltd. | Thermo pipette, clear, bulk pack. PakGent PT-5000B-T Thermo Scientific Art Tips offer precisio... |