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

A technology of blast furnace slag and emission, which is applied in the direction of volume measuring instrument/method, measuring capacity, measuring device, etc., can solve the problem of reducing V yield, large environmental impact, and no more accurate analysis method for the amount of slag stored in the furnace, etc. problem, achieving the effect of reducing processing time

Active Publication Date: 2021-01-26
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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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

Method used

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with embodiment.

[0013] The measuring and calculating method of the amount of slag loaded in the slag tank among the present invention comprises the following steps:

[0014] 1. Carry out weighing and calibration of blast furnace slag at different temperatures in advance to obtain the relationship curve or relational expression between blast furnace slag density and temperature; the relational expression between blast furnace slag density and temperature is ρ T = ρ 标定 -α×(T-T 标定 ); among them, ρ T is the slag density value of blast furnace slag at the measured temperature T, ρ 标定 For blast furnace slag at the calibration temperature T 标定 The slag density value at time, α is a constant determined according to the test, T is the measured temperature, T 标定 is the preset calibration temperature, T 标定 The value of is higher than the melting point of blast furnace slag;

[0015] 2. Blast furnace sla...

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Abstract

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. When the present invention is implemented, the blast furnace slag is weighed and calibrated at different temperatures in advance to obtain the relationship curve or relational expression between the blast furnace slag density and temperature; The liquid level height of the tank and the temperature of the slag are tested at the same time; the volume of the slag loaded is calculated according to the liquid level, and the density of the slag loaded is obtained according to the relationship curve or relational formula between the density of the blast furnace slag and the temperature. The volume number and the density are calculated to obtain the amount of slag loaded in the slag tank. The invention can accurately measure and calculate the discharge amount of blast furnace slag under the condition of not adding a weighing device, and thereby analyze the influence of the amount of slag and iron remaining in the furnace hearth on the stability of the blast furnace. The defoaming agent includes vanadium extraction tailings, which can achieve the purpose of blast furnace slag defoaming and harmless treatment of vanadium extraction 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B3/06C22B7/00C22B34/22G01F22/00
CPCC21B3/06C22B7/001C22B34/22G01F22/00Y02W30/50Y02P10/20
Inventor 饶家庭王禹键
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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