Method for ironmaking by smelting reduction in stir-generated vortex

A method for ironmaking by smelting reduction in a stir-generated vortex, comprising:

• (1) placing a pig iron in an induction furnace, heating the pig iron to a molten state to form a molten iron, and maintaining a temperature of the molten iron to be greater than or equal to 1,450° C., wherein an amount of the pig iron is 5-20 vol % of an induction furnace body;
• (2) stirring the molten iron to form a vortex with a height-to-diameter ratio of 0.5-2.5, and continuously performing stirring;
• (3) spraying and blowing a mixture of an iron-containing mineral, a reducing agent and a slag-forming agent to a center of the vortex to cause a reduction reaction, and stopping stirring after molten iron and molten slags are obtained and a waste gas is produced, wherein a mass ratio of the iron-containing mineral, the reducing agent, and the slag-forming agent is 1:(0.1-0.15):(0.25-0.4);
• and
• (4) discharging the molten iron and the molten slags respectively, and exhausting a treated waste gas.