Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a comprehensive utilization method for high-iron bauxite and relates to the technical field of nonferrous metallurgy and ferrous metallurgy, particularly a comprehensive utilization method for producing iron and aluminum from iron and aluminum paragenic ores. The method disclosed by the invention can effectively treat bauxitic ores, wherein the iron grade is 15-30% and the aluminum grade is 30-65%. The invention provides the comprehensive utilization method for high-iron bauxite, wherein the method is wide in application range, efficient and environmental-friendly. The method comprises the following steps of: S1, drying, crushing and grinding high-iron bauxitic ores; S2, dissolving the bauxitic ores, S3, carrying out desilicication and then pumping the ores into a separating subside to be settled and separated to obtain a dissolved liquid and red mud; S4, preparing aluminum oxide; S5, feeding aired red mud into a proportioning bin, mixing the red mud with coal and iron powder, pre-reducing the mixture by high-temperature coal gas in a rotary kiln, and then adding coal powder and lime in an electric furnace for melting and reduction; and S6, magnetically screening, sieving and grinding electronic furnace slag to prepare mud blanks, and firing the mud blanks into brick bodies in the kiln.
The invention discloses a comprehensive utilization method for high-iron bauxite and relates to the technical field of nonferrous metallurgy and ferrous metallurgy, particularly a comprehensive utilization method for producing iron and aluminum from iron and aluminum paragenic ores. The method disclosed by the invention can effectively treat bauxitic ores, wherein the iron grade is 15-30% and the aluminum grade is 30-65%. The invention provides the comprehensive utilization method for high-iron bauxite, wherein the method is wide in application range, efficient and environmental-friendly. The method comprises the following steps of: S1, drying, crushing and grinding high-iron bauxitic ores; S2, dissolving the bauxitic ores, S3, carrying out desilicication and then pumping the ores into a separating subside to be settled and separated to obtain a dissolved liquid and red mud; S4, preparing aluminum oxide; S5, feeding aired red mud into a proportioning bin, mixing the red mud with coal and iron powder, pre-reducing the mixture by high-temperature coal gas in a rotary kiln, and then adding coal powder and lime in an electric furnace for melting and reduction; and S6, magnetically screening, sieving and grinding electronic furnace slag to prepare mud blanks, and firing the mud blanks into brick bodies in the kiln.
Comprehensive utilization method for high-iron bauxite
NIU YUBO (Autor:in)
10.02.2016
Patent
Elektronische Ressource
Englisch
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