Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for comprehensively utilizing red mud
Red mud and a solid reducing agent are mixed and pelletized, and the mixture is added into an electric arc furnace to be heated to 1500 DEG C or above. Iron oxide in the red mud is reduced into molten iron which sinks to the bottom of the electric furnace, and other substances such as Al2O3, SiO2, TiO2 and CaO are melted into slag. And after the reaction is completed, adjusting the components of the slag to prepare the titanium-containing mullite. The molten iron is used for steelmaking or cast iron making. Sodium in the red mud enters the smoke dust as an oxide. And after recovery, carrying out water leaching to obtain NaOH. If a liquid or gas reducing agent is used, the liquid or gas reducing agent does not participate in pelletizing, but is directly introduced into the melt of the electric furnace.
将赤泥与固体还原剂混合造球，加到电弧炉中加热到1500℃以上。赤泥中的铁氧化物被还原成铁水，沉到电炉底部，其他物质Al2O3、SiO2、TiO2、CaO等熔化成炉渣。反应完成后将炉渣调整成分，制备含钛莫来石。铁水用于炼钢或做成铸铁。赤泥中的钠、呈氧化物进入烟尘。回收后，水浸得到NaOH。若用液体或气体还原剂，不参加造球，而是直接将液体或气体还原剂通到电炉的熔体中。
Method for comprehensively utilizing red mud
Red mud and a solid reducing agent are mixed and pelletized, and the mixture is added into an electric arc furnace to be heated to 1500 DEG C or above. Iron oxide in the red mud is reduced into molten iron which sinks to the bottom of the electric furnace, and other substances such as Al2O3, SiO2, TiO2 and CaO are melted into slag. And after the reaction is completed, adjusting the components of the slag to prepare the titanium-containing mullite. The molten iron is used for steelmaking or cast iron making. Sodium in the red mud enters the smoke dust as an oxide. And after recovery, carrying out water leaching to obtain NaOH. If a liquid or gas reducing agent is used, the liquid or gas reducing agent does not participate in pelletizing, but is directly introduced into the melt of the electric furnace.
将赤泥与固体还原剂混合造球，加到电弧炉中加热到1500℃以上。赤泥中的铁氧化物被还原成铁水，沉到电炉底部，其他物质Al2O3、SiO2、TiO2、CaO等熔化成炉渣。反应完成后将炉渣调整成分，制备含钛莫来石。铁水用于炼钢或做成铸铁。赤泥中的钠、呈氧化物进入烟尘。回收后，水浸得到NaOH。若用液体或气体还原剂，不参加造球，而是直接将液体或气体还原剂通到电炉的熔体中。
Method for comprehensively utilizing red mud
一种赤泥综合利用的方法
ZHAI YUCHUN (Autor:in) / ZHOU TONGSHENG (Autor:in) / YE SHIXIANG (Autor:in) / ZHOU QIANG (Autor:in) / ZHAI ENDONG (Autor:in) / LI YING (Autor:in) / LI GUILAN (Autor:in)
02.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C01D
Verbindungen der Alkalimetalle, d.h. des Lithiums, Natriums, Kaliums, Rubidiums, Cäsiums oder Franciums
,
COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
/
C04B
Kalk
,
LIME
/
C21B
Gewinnung von Eisen oder Stahl
,
MANUFACTURE OF IRON OR STEEL
/
C22B
PRODUCTION OR REFINING OF METALS
,
Gewinnen oder Feinen von Metallen
Method for comprehensively utilizing sodium fluosilicate production wastewater
| Europäisches Patentamt | 2023