| 摘要 |
Disclosed are a method for preparing a soda-lime-silica glass basic formula and a method for producing soda-lime-silica glass, which comprise: using a sodium hydroxide solution to perform pre-desiliconization on silicon-containing powder industrial waste; introducing carbon dioxide for carbonation decomposition, and performing filtering to obtain a silicic acid precipitate and a sodium carbonate solution; drying the silicic acid precipitate to obtain silicon dioxide; adding milk of lime into filtered sodium carbonate for causticization, and performing filtering to obtain a sodium hydroxide solution and a calcium carbonate precipitate; drying the calcium carbonate precipitate; obtaining the silicon dioxide and some calcium carbonate, and adding sodium oxide; and so on. Also disclosed is a method for extracting aluminum from fly ash for co-production of soda-lime glass, which uses silicon dioxide obtained through alkali dissolution and desiliconization on fly ash and calcium carbonate generated in causticization as main raw materials. The method for extracting aluminum from fly ash for co-production of soda-lime glass according to the present invention integrates and optimizes a process of extracting aluminum from the fly ash, has a high material and energy utilization rate, good quality of by-product glass, and high added value, and can greatly improve economical efficiency of extracting aluminum from fly ash. |
