Automatic production line for directly reducing iron

Abstract

The invention relates to a production device for directly reducing iron, in particular to an automatic production line for directly reducing iron, which comprises a belt conveyer, a press block hydraulic forming unit, a kiln car stepping machine, a kiln car ferry conveyer, a hydraulic pushing machine, a tunnel kiln, a reaction pot and a kiln car. The automatic production line is characterized by also comprising a raw material preparing unit, a block arranging machine, a pot loading machine and a pot unloading machine, wherein the raw material preparing unit and the block arranging machine arerespectively connected with the press block hydraulic forming unit through the belt conveyer, the pot loading machine and the pot unloading machine are connected with the block arranging machine through the kiln car stepping machine and the kiln car ferry conveyer, the hydraulic pushing machine is arranged at an inlet of a kiln head of the tunnel kiln, the pot loading machine is connected with the hydraulic pushing machine, the pot unloading machine is connected with the kiln tail of the tunnel kiln, and the kiln car is arranged on rails of the kiln car stepping machine and moves on the railsto form the end-to-end automatic production line of the tunnel kiln. The automatic production line realizes automatic and mechanical production of iron direct reduction, lowers the labor intensity, and improves the product quality and the production efficiency of the iron direct reduction.

Description

technical field [0001] The invention relates to a device for producing direct reduced iron, in particular to an automatic production line for direct reduced iron. Background technique [0002] The method of producing direct reduced iron in the existing technology generally adopts tunnel kiln canning method to produce reduced iron. The tunnel kiln has a strip-shaped roasting path. When producing reduced iron, the fine ore powder, coal powder, and limestone powder are firstly loaded into the reaction tank according to a certain proportion and charging method, and then the reaction tank is placed on the trolley. Then the trolley and the reaction tank are continuously pushed from the kiln head into the bar-shaped roasting channel, and after passing through the preheating section, reducing section, heat preservation and slow cooling section, the reduction process of iron powder is completed. However, the raw materials of this method are all loaded into the reaction tank in a loo...

AI Technical Summary

Problems solved by technology

The process adopts the method of compressing the concentrate powder into briquettes with briquetting equipment, and putting the finished concentrate powder briquettes into the reduction crucible, and adding deoxidizer and desulfurizer into the crucible at the same time, although the concentrate Powder briquettes, deoxidizers and desulfurizers are all placed in the crucible, but the concentrate powder briquettes are not fully mixed with the deoxidizer and desulfurizer, which is not conducive to the reduction reaction of the concentrate powder briquettes, and then add The process of deoxidizer and desulfurizer is complicated, which is not conducive to the realization of mechanized operation and mass production; the crucible is neatly discharged on the vehicle, and the vehicle is pushed into the reduction furnace by the running vehicle, and it is preheated in the reduction furnace. The three processes of reduction and cooling, and finally, high-quality direct reduced iron is produced out of the furnace. From the reduction process, it can be seen that the vehicle is pushed into the reduction furnace and undergoes three processes of preheating, reduction, and cooling for reduction. The next reduction can only be carried out after the car is out of the furnace. The whole production process is discontinuous, and the production output is relatively small. The production of reduced iron cannot achieve continuous mechanized and automated reduced iron production line

Images