The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2016
Filed:
Nov. 27, 2012
Shenhua Group Corporation Limited, Dongcheng District, Beijing, CN;
National Institute of Clean-and-low-carbon Energy, Changping District, Beijing, CN;
National Institute of Clean-and-Low-Carbon Energy, Beijing, CN;
Shenhua Group Corporation Limited, Beijing, CN;
Abstract
The present invention discloses a method for preparing a soda-lime-silica glass basic formulation and a method for producing soda-lime-silica glass, comprising the steps of: pre-desiliconizing silicon-containing powdery industrial waste with a sodium hydroxide solution; introducing carbon dioxide for carbonation decomposition, and filtering to obtain a silicic acid precipitate and a sodium carbonate solution; drying the silicic acid precipitate to obtain silicon dioxide; adding lime milk into the filtered sodium carbonate for causticization, and filtering to obtain a sodium hydroxide solution and a calcium carbonate precipitate; drying the calcium carbonate precipitate; using said silicon dioxide and part of the calcium carbonate and adding sodium oxide. The present invention further discloses a method for extracting aluminum from coal ash for co-production of soda lime glass, which uses silicon dioxide obtained from alkali dissolution and desiliconization of coal ash and calcium carbonate generated from causticization as main raw materials. The method for extracting aluminum from coal ash for co-production of soda lime glass according to the present invention integrates and optimizes a process of extracting aluminum from the coal ash, has a high material and energy utilization rate, good quality of co-product glass, and high added value, and can greatly improve economical efficiency of aluminum extraction of coal ash.