Vanadium titanium magnetite treatment device

Abstract

The invention provides a vanadium titanium magnetite treatment device which comprises a rotary kiln, a coal injection device, an electric furnace and a converter. A reaction cavity used for carrying out prereduciton on vanadium titanium magnetite is limited in the rotary kiln, the rotary kiln is provided with a feed inlet for feeding raw materials into the rotary kiln, a roasted ore outlet for discharging roasted ore and an air outlet used for exhausting smoke gas, the oil injection device is arranged on the rotary kiln for injecting fuel into the reaction cavity, the electric furnace is usedfor smelting roasted ore and provided with a roasted ore inlet, a slag outlet, an iron outlet and a smoke outlet, the roasted ore inlet is used for adding roasted ore, titanium slag and vanadium-containing iron water obtained through smelting of the electric furnace are discharged from the slag outlet and the iron outlet, smoke gas in the electric furnace is exhausted from the smoke outlet, the rotary kiln is used for blowing vanadium-containing iron water, the rotary kiln is provided with an adding inlet, a slag discharge outlet and a discharge outlet, the adding inlet is used for adding vanadium-containing iron water drained from the iron outlet, and vanadium slag and semisteel produced through blowing of the rotary kiln are discharged from the slag discharge outlet and the discharge outlet. The vanadium titanium magnetite treatment device is simple in structure, short in flow, low in energy consumption, small in pollution and low in cost.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a vanadium-titanium magnetite processing device. Background technique [0002] Vanadium-titanium magnetite resources are the main mineral resources in the world's vanadium-titanium resources. At present, the main processing devices for vanadium-titanium magnetite include blast furnace smelting, rotary hearth furnace and rotary kiln-electric furnace smelting. Among them, the blast furnace smelting process has a long process, high requirements on ore, high energy consumption, and low titanium grade of titanium slag obtained; compared with blast furnace smelting, the rotary hearth furnace process for vanadium-titanium magnetite has a short process and less environmental pollution. However, the rotary hearth furnace process is not easy to achieve large-scale industrial production due to its own equipment problems, and its industrial application is limited. [0003] At present, so...

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Problems solved by technology

Among them, the blast furnace smelting process has a long process, high requirements on ore, high energy consumption, and low titanium grade of titanium slag obtained; compared with blast furnace smelting, the rotary hearth furnace process for vanadium-titanium magnetite has a short process and less environmental pollution. However, due to the problems of the equipment itself, the rotary hearth furnace process is not easy to achieve large-scale industrial production, and its industrial application is limited

[0003] At present, some enterprises have adopted the "rotary kiln-electric furnace" process to process vanadium-titanium magnetite. Among them, some processes add a multi-layer shaft furnace to pretreat minerals before the rotary kiln, and use the "multi-layer shaft furnace-rotary kiln countercurrent" two The one-stage roasting process processes high-quality seaside placer, and the obtained calcine metallization rate reaches 80%. This process adds multi-layer shaft furnace pretreatment before the mineral enters the rotary kiln, increases process equipment, and requires large investment, cost and energy consumption. High; there is also a downstream rotary kiln process to process vanadium-titanium magnetite concentrate. In the process of rotary kiln processing vanadium-titanium magnetite, the flue gas and materials are downstream, and four kinds of mixtures such as dolomite and silica need to be added. The metallization rate is 45%, the process consumes a lot of energy and the metallization rate of calcined sand is low

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