Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Method for dissolving poison solidified chromium slag
The invention discloses a method for dissolving poison solidified chromium slag. Firstly chromium slag and blast-furnace slag are fetched to be dried and refined. A composite catalyst is made by mixing sodium hydroxide and sodium silicate according to weight ratio of 1: 1.5 to 4. A compounding reducing agent is made by mixing sodium sulfide and ferrous sulfate according to weight ratio of 1:1. According to weight, 34 to 57 portions of refined blast-furnace slag, 34 to 57 portions of chromium slag, 3 to 9 portions of composite catalyst and 2 to 6 portions of compounding reducing agent are mixed, then water is added according to the quality of liquid-solid ratio of 0.23 to 0.27 : 1. And the blast-furnace slag, the chromium slag, the composite catalyst and the compounding reducing agent are evenly stirred. The solidified body of dissolving poison solidified chromium slag is finished after molding, solidifying, removing molding and maintaining. The solidified body prepared by the method has good mechanical property. Not only is the environment problem produced by storing the blast-furnace slag remitted, but also the leaching of chromium ion in the chromium slag is effectively prevented.
Method for dissolving poison solidified chromium slag
The invention discloses a method for dissolving poison solidified chromium slag. Firstly chromium slag and blast-furnace slag are fetched to be dried and refined. A composite catalyst is made by mixing sodium hydroxide and sodium silicate according to weight ratio of 1: 1.5 to 4. A compounding reducing agent is made by mixing sodium sulfide and ferrous sulfate according to weight ratio of 1:1. According to weight, 34 to 57 portions of refined blast-furnace slag, 34 to 57 portions of chromium slag, 3 to 9 portions of composite catalyst and 2 to 6 portions of compounding reducing agent are mixed, then water is added according to the quality of liquid-solid ratio of 0.23 to 0.27 : 1. And the blast-furnace slag, the chromium slag, the composite catalyst and the compounding reducing agent are evenly stirred. The solidified body of dissolving poison solidified chromium slag is finished after molding, solidifying, removing molding and maintaining. The solidified body prepared by the method has good mechanical property. Not only is the environment problem produced by storing the blast-furnace slag remitted, but also the leaching of chromium ion in the chromium slag is effectively prevented.
Method for dissolving poison solidified chromium slag
LI DONGWEI (Autor:in) / HUANG XIAO (Autor:in) / LI SHAN (Autor:in) / HUANG TAO (Autor:in)
19.08.2015
Patent
Elektronische Ressource
Englisch
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