.

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.



在线联系供应商

至: Beijing Sinofloc Chemical Co.,Ltd.
Your E-mail:
消息正文:


Send to other suppliers

Other supplier products

Superabsorbent
Superabsorbent Applications of Super Absorbent Polymers in Agriculture Superabsorbent SINOFLOC superabsorbent polymers (known as SAP) are water-insoluble poly...
Enhanced Oil Recovery (EOR)
Enhanced Oil Recovery (EOR) SINOFLOC manufactures a complete range of anionic polyacrylamide for . Our chemicals for Polymer Flooding, long chain polyacrylamide molecules mixe...
Anionic Flocculants
Anionic Flocculants SINOFLOC anionic flocculantare co-polymers of acrylamide with increasing proportions of acrylate groups, which give the polymers negative charges, ...
Construction
Construction SINOFLOC tailor-made products are designed to be used as the concrete additives, cement additives, grouts, adhesives, coatings, and concrete additi...
Friction Reducer
Friction Reducer SINOFLOCis offering a broad range of leading-class friction reducer to our customers from fresh water to heavy brines. Our High Viscosity Friction ...
供应产品

Same products

KLUBER Microlube GL 261 400g Special Lubricating Greases on a Mineral Oil Base
KLUBER Microlube GL 261 400g Special Lubricating Greases on a Mineral Oil Base 卖方: 广东聚广恒自动化设备有限公司 KLUBER ISOFLEX TOPAS NCA52400G400G/PC 10PC/Carton KLUBER ISOFLEX TOPAS NCA52 1KG1KG/PC 12PC/Cart...
MOBIL GREASE XHP 222 16KG Industrial Grease
MOBIL GREASE XHP 222 16KG Industrial Grease 卖方: 广东聚广恒自动化设备有限公司 XHP 220 lithium-complex greases are designed for a broad range of applications in diverse industr...
Castrol Molub-Allloy Paste TA 1KG High temperature Lubricants
Castrol Molub-Allloy Paste TA 1KG High temperature Lubricants 卖方: 广东聚广恒自动化设备有限公司 It is used as assembly paste and prevents seizing, welding or scaling
Phenol Alkylation Plant
Phenol Alkylation Plant 卖方: Hubei Sanli Fengxiang Technology Co., Ltd Phenol Alkylation Plant Product Description Alkyl phenolis produced by the alkylation of phenol...
KYODO YUSHI PAREMAX SUPER 400G High Temperature Grease
KYODO YUSHI PAREMAX SUPER 400G High Temperature Grease 卖方: 广东聚广恒自动化设备有限公司 Ball bearing grease. Excellent in low noise property and usable over a wide temperature range.Rar...