Method for controlling sand content of water body of blast furnace INBA circulating system and flow-limiting device thereof

Abstract

The invention relates to the technical field of blast-furnace smelting and slag-forming process and discloses a method for controlling the sand content of a water body of a blast furnace INBA circulating system, which can control the shape and size of furnace sand particles by controlling the fluid dynamic energy in the granulating and slag-forming procedure. By the means of controlling the slag-forming water supply energy in the water supply link and the mode of controlling the shape and size of the formed slag from the beginnings of the slag-forming process to effectively capture the formed slag, the sand content of the water body of the INBA circulating system is controlled, so as to achieve the purpose of eliminating the blockage of furnace sand in the circulating system, preventing the wear damage of equipment and reducing the blast furnace slag-forming cost. The method works reliably, has obvious effects and is easy to promote and apply.

Description

technical field [0001] The invention relates to the technical field of blast furnace smelting slagging technology. Background technique [0002] The blast furnace INBA slag making process is an environmentally friendly blast furnace slag making technology introduced from abroad in the past 20 years, and has been widely used in domestic large and medium-sized iron and steel enterprises. [0003] The basic advantage of this technology lies in its slagging process and the recycling of production water under closed conditions, which can avoid air and environmental pollution in the blast furnace operation area to the greatest extent and promote the reuse of water resources. [0004] The basic defect of this technology is that the furnace sand flowing out of the granulation tower can easily penetrate the drum screen and enter the granulation sump, and then join the system circulation movement of the circulating water body. Due to the lack of control means, the furnace sand enters...

AI Technical Summary

Problems solved by technology

Due to the lack of control means, the furnace sand enters the circulation system pipeline without restriction, resulting in continuous sand blockages in the relevant nodes of the circulation system, and the high cost of obstacle removal; the pipeline flow components are rapidly worn due to the furnace sand factor, and the equipment cost is unbearable

For the control of the furnace sand content in the circulating water body, there has been no exact and effective means of regulation and control.

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