.

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

Coagulants
Coagulants SINOFLOCoffers an extensive range of organic coagulantssuch as polyamine, polyDADMAC and decoloring agent. Our products, being the cationic coagula...
Guar Alternative
Guar Alternative SINOFLOC is offering a new range of synthetic polyacrylamide that can be used as , with main functions of opening the fractures and transporting an...
Cationic Flocculants for Municipal Wastewater Treatment
Cationic Flocculants for Municipal Wastewater Treatment Along with the increasing need for water resources, the recycling and reuse of municipal wastewater are essential. Cationic polyacrylamide is effec...
Friction Reducer
Friction Reducer SINOFLOC is offering a broad range of leading-class to our customers from fresh water to heavy brines. Our product range includes anionic polyacryl...
Sugar Making
Sugar Making Sugar beet and sugarcane could be processed sugar by various processing. The process basically includes clarification of the cane juice by milling ...
供应产品

Same products

LUBE SH-ONE-4S 400G for Fanuc Machines
LUBE SH-ONE-4S 400G for Fanuc Machines 卖方: 广东聚广恒自动化设备有限公司 TheSH-ONEseries ofgreaseisoneof the latest released byLUBEand are used on a range of Fanuc machines
Mobil Grease 28 Synthetic Aviation Grease
Mobil Grease 28 Synthetic Aviation Grease 卖方: 广东聚广恒自动化设备有限公司 Mobilgrease 28is the polyalphaolefin (PAO), clay-based multipurpose airframe and wheel bearing gr...
Kluber Isoflex Topas NCA 5051 50ml  Original Lubricants
Kluber Isoflex Topas NCA 5051 50ml Original Lubricants 卖方: 广东聚广恒自动化设备有限公司 ISOFLEX TOPAS NCA 5051 is used in plain bearings in the automotive industry. ISOFLEX TOPAS NCA 50...
CHRISTO-LUBE MCG 111 2-OZ Valve Seal Grease
CHRISTO-LUBE MCG 111 2-OZ Valve Seal Grease 卖方: 广东聚广恒自动化设备有限公司 CHRISTO-LUBE®MCG 111Oxygen Compatible Grease is designed to protect components against extrem...
Permatex 81160 85G High Temperature Resistant Resin
Permatex 81160 85G High Temperature Resistant Resin 卖方: 广东聚广恒自动化设备有限公司 PermatexHi-Temp RED RTV Silicone Gasket is designed to provide reliable “formed-in-place&rd...