Method for measuring emission blast furnace slag and defoaming blast furnace slag

Abstract

The invention relates to a method for measuring emission blast furnace slag and defoaming blast furnace slag, belonging to the technical field of calculating the emission of blast furnace slag and thedefoaming method. When the method provided by the invention is carried out, the blast furnace slag is subjected to weighing calibration at different temperatures in advance so as to obtain a graph ofrelation or a relation between the density and the temperature of the blast furnace slag; the blast furnace slag enters a deslagging tank; after defoaming treatment, the liquid height of the deslagging tank is measured; meanwhile, the slag temperature is tested; the volume number of the loaded slag is calculated according to the liquid height; the density of the loaded slag is obtained accordingto the graph of relation or the relation between the density and the temperature of the blast furnace slag; and finally, the slag quantity loaded in the deslagging tank is obtained by calculating thevolume number and the density of the loaded slag. Under the condition of not increasing a weighing device, the method provided by the invention can measure the emission of the blast furnace slag accurately; therefore, the influence of the residual slag iron quantity of the hearth on the stability of the blast can be analyzed. A defoaming agent comprises extracted vanadium tailings, which can realize the defoaming purpose of blast furnace slag and harmless treatment of the extracted vanadium tailings.

Description

technical field [0001] The invention relates to a method for measuring blast furnace slag discharge and blast furnace slag defoaming, and belongs to the technical field of blast furnace slag discharge measurement and defoaming methods. Background technique [0002] At present, the amount of slag discharged from the blast furnace is estimated, and there is no online weighing device, and there is no more accurate analysis method for the amount of slag stored in the furnace tank. In addition, for the vanadium extraction tailings produced by the vanadium extraction process, the current disposal method is usually to reserve a high content of V and then sell it away, thus reducing the yield of V. The environment has a greater impact. Contents of the invention [0003] The first technical problem to be solved by the present invention is to provide a method for measuring blast furnace slag discharge and blast furnace slag defoaming, which can accurately measure blast furnace slag...

AI Technical Summary

Problems solved by technology

[0002] At present, the amount of slag discharged from the blast furnace is estimated, there is no online weighing device, and there is no more accurate analysis method for the amount of slag stored in the furnace tank

In addition, for the vanadium extraction tailings produced by the vanadium extraction process, the current disposal method is usually to reserve a high content of V and then sell it away, thus reducing the yield of V. Great environmental impact