Single-bucket serial-bucket charging method applied to bell-free blast furnaces

Abstract

The invention discloses a single-bucket serial-bucket charging method applied to bell-free blast furnaces. The method comprises: taking a material-receiving hopper and one failure-free charging bucket as an upper charging bucket and a lower charging bucket connected in series; adding a car of material to the upper charging bucket first in a charging process and discharging the material through the lower charging bucket; putting the material in the upper charging bucket into the lower charging bucket and putting a car of material into the lower charging bucket at a normal charging speed through a hoist skip car at the same time; putting two cars of material in the lower charging bucket into a blast furnace under the control of a blast furnace control computer so as to finish the process ofcharging the blast furnace; and repeating the steps. Therefore, when a certain charging-bucket equipment system breaks down, a single normal charging bucket can still be utilized to continue production so as to prevent the blast furnace from damping down, ensure that the blast furnace can continue to produce and meet requirements for charging capacity and charging speed.

Description

technical field [0001] The invention belongs to the improvement of a bellless blast furnace charging method, in particular to a single tank series tank charging method applied to a bellless blast furnace. Background technique [0002] At present, the top feeding system of the bellless blast furnace uses a hoist to pull the materials into two parallel tanks (south tank and north tank). The two material tanks in the north are recycled and used alternately. Whether the two material tank equipment can operate normally will directly affect the production of the blast furnace. [0003] The currently used process of charging the south and north tanks of the blast furnace is as follows: [0004] 1. When the material tank empty signal comes, the pressure equalization and throttle valve are closed, and the lower sealing valve close signal comes, the material tank is ready for receiving material; [0005] 2. When the signal of moving the receiving hopper is in place, the release val...

AI Technical Summary

Problems solved by technology

However, when the equipment in a certain material tank fails, such as pressure equalization, release, upper density, lower density, throttling, mobile receiving hopper and material tank hydraulic station, etc., the hoist will not be able to pull the material to the fault. The material in the material tank or the faulty material tank cannot be put into the blast furnace, so that the production is forced to be interrupted, resulting in the shutdown of the blast furnace, which affects the pig iron production of the blast furnace

Images