Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing aluminum-chromium brick from waste aluminum-chromium catalyst in Catofin process and performing innocent treatment on aluminum-chromium brick
The invention discloses a method for preparing an aluminum-chromium brick from a Catofin process waste aluminum-chromium catalyst and carrying out harmless treatment on the aluminum-chromium brick. According to the method, the waste aluminum-chromium catalyst in the Catofin process is taken as a treatment object, and the waste catalyst is directly added or crushed into particles or fine powder and other particles to be introduced, so that the aluminum-chromium brick is prepared. The alumina-chrome brick is prepared from the following raw materials in percentage by weight: particle composition (50-75% of particles and 25-50% of matrix); 1-30% of a waste catalyst; and 1.25-15% of metal aluminum powder. Cr < 6 + > in the waste catalyst is reduced into harmless low-valence chromium ions by adding a strong reducing atmosphere and metal aluminum powder in the sintering process. Through the process, the industrial hazardous waste, namely the waste aluminum-chromium catalyst, is subjected to innocent treatment, and the waste can be recycled to partially replace a chromium-containing raw material with high price.
本发明公开了一种Catofin工艺废弃铝铬催化剂制备铝铬砖并无害化处理的方法。本发明以Catofin工艺废弃铝铬催化剂作为处理对象，将废弃催化剂直接加入或破碎成颗粒或细粉等不同粒度引入，制备铝铬砖。本发明制备铝铬砖原料组成重量百分比为：颗粒级配（颗粒50~75%；基质25~50%）；废弃催化剂1~30%；金属铝粉1.25~15%。通过烧成过程中强还原气氛及金属铝粉的加入，将废弃催化剂中的Cr6+还原成无害的低价铬离子。通过此过程，不仅将废弃铝铬催化剂这种工业危废无害化处理，且能够将废物再利用，部分替代高昂价格的含铬原料。
Method for preparing aluminum-chromium brick from waste aluminum-chromium catalyst in Catofin process and performing innocent treatment on aluminum-chromium brick
The invention discloses a method for preparing an aluminum-chromium brick from a Catofin process waste aluminum-chromium catalyst and carrying out harmless treatment on the aluminum-chromium brick. According to the method, the waste aluminum-chromium catalyst in the Catofin process is taken as a treatment object, and the waste catalyst is directly added or crushed into particles or fine powder and other particles to be introduced, so that the aluminum-chromium brick is prepared. The alumina-chrome brick is prepared from the following raw materials in percentage by weight: particle composition (50-75% of particles and 25-50% of matrix); 1-30% of a waste catalyst; and 1.25-15% of metal aluminum powder. Cr < 6 + > in the waste catalyst is reduced into harmless low-valence chromium ions by adding a strong reducing atmosphere and metal aluminum powder in the sintering process. Through the process, the industrial hazardous waste, namely the waste aluminum-chromium catalyst, is subjected to innocent treatment, and the waste can be recycled to partially replace a chromium-containing raw material with high price.
本发明公开了一种Catofin工艺废弃铝铬催化剂制备铝铬砖并无害化处理的方法。本发明以Catofin工艺废弃铝铬催化剂作为处理对象，将废弃催化剂直接加入或破碎成颗粒或细粉等不同粒度引入，制备铝铬砖。本发明制备铝铬砖原料组成重量百分比为：颗粒级配（颗粒50~75%；基质25~50%）；废弃催化剂1~30%；金属铝粉1.25~15%。通过烧成过程中强还原气氛及金属铝粉的加入，将废弃催化剂中的Cr6+还原成无害的低价铬离子。通过此过程，不仅将废弃铝铬催化剂这种工业危废无害化处理，且能够将废物再利用，部分替代高昂价格的含铬原料。
Method for preparing aluminum-chromium brick from waste aluminum-chromium catalyst in Catofin process and performing innocent treatment on aluminum-chromium brick
一种Catofin工艺废弃铝铬催化剂制备铝铬砖并无害化处理的方法
FAN MUXU (Autor:in) / WANG HAN (Autor:in) / FENG ZHIYUAN (Autor:in) / ZHANG TAO (Autor:in) / WU GANG (Autor:in) / LI SENYIN (Autor:in) / LI ZONGTAI (Autor:in) / GENG KEMING (Autor:in) / LI DAN (Autor:in)
22.09.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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