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An online measuring device and method for the temperature of molten iron in a large blast furnace

A blast furnace molten iron and measuring device technology, applied in blast furnaces, inspection devices, blast furnace details, etc., can solve problems such as the difficulty in effectively and accurately detecting the temperature of molten iron at the blast furnace taphole, and difficulty in responding to the production status of the blast furnace, so as to avoid subjective factors impact, the effect of accurate and effective measurement

Active Publication Date: 2019-03-19
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem in the prior art that the existing molten iron measuring device is difficult to cope with the complex production conditions of the blast furnace, making it difficult to effectively and accurately detect the temperature of the molten iron at the taphole of the blast furnace, and to provide a large-scale blast furnace molten iron temperature measurement device. On-line measurement device and method, providing effective and on-line molten iron temperature detection method for complex production conditions of blast furnace

Method used

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  • An online measuring device and method for the temperature of molten iron in a large blast furnace
  • An online measuring device and method for the temperature of molten iron in a large blast furnace
  • An online measuring device and method for the temperature of molten iron in a large blast furnace

Examples

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Effect test

Embodiment 1

[0063] A kind of on-line measuring method of molten iron temperature of large-scale blast furnace of the present invention, the steps are as follows:

[0064] Step 1: Determine the tapping position, collect the position information of the mud cannon 520, the tapping machine 530 and the capping machine 540, and collect the accumulative time for the tapping machine 530 to continuously rotate and hit the tapping hole after the capping machine 540 removes the cover plate It is t1=10min, when t1=10≥5min, determine that the taphole corresponding to the uncapping machine 540 is the taphole for this tapping, and set the scheduled temperature measurement time as t mi , where t m1 = 60min, t m2 = 80min, t m3 =100min; that is, temperature measurement is performed when the effective tapping time reaches 60, 80 and 100min;

[0065] Step 2: Calculate the effective tapping time. After determining the tapping position, the tapping machine 530 returns to the original position, and then the ...

Embodiment 2

[0070] A kind of on-line measuring method of molten iron temperature of large-scale blast furnace of the present invention, the steps are as follows:

[0071] Step 1: Determine the tapping position, collect the position information of the mud cannon 520, the tapping machine 530 and the capping machine 540, and collect the accumulative time for the tapping machine 530 to continuously rotate and hit the tapping hole after the capping machine 540 removes the cover plate It is t1=10min, when t1=10min≥5min, determine that the taphole corresponding to the uncapping machine 540 is the taphole for this tapping, and set the scheduled temperature measurement time as t mi , where t m1 = 60min, t m2 = 80min, t m3 = 100min; that is, temperature measurement is performed when the effective tapping time reaches 60min, 80min and 100min;

[0072] Step 2: Calculate the effective tapping time. After determining the tapping position, the tapping machine 530 returns to the original position, and...

Embodiment 3

[0078] A kind of on-line measuring method of molten iron temperature of large-scale blast furnace of the present invention, the steps are as follows:

[0079] Step 1: Determine the tapping position, collect the position information of the mud cannon 520, the tapping machine 530 and the capping machine 540, and collect the accumulative time for the tapping machine 530 to continuously rotate and hit the tapping hole after the capping machine 540 removes the cover plate For t1=8min, when t1=10min≥5min, determine that the taphole corresponding to the uncapping machine 540 is the taphole for this tapping, and set the scheduled temperature measurement time as t mi , where t m1 = 60min; that is, the temperature is measured when the effective tapping time reaches 60min;

[0080] Step 2: Calculate the effective tapping time. After determining the tapping position, the tapping machine 530 returns to the original position, and then the uncapping machine 540 covers the tapping channel 10...

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Abstract

The invention discloses an online measuring device and method for the temperature of large blast furnace molten iron and belongs to the technical field of temperature measurement of blast furnace molten iron. The online measuring device comprises an iron outlet channel, a slag skimmer, a molten iron temperature measuring unit and an information control collector, wherein a temperature measuring mechanism is fixedly connected with the top of the slag skimmer through a temperature measuring support; a rotating part is arranged at the top of the temperature measuring support; the other end of a horizontal telescopic rod is vertically provided with a vertical telescopic air cylinder; a temperature measuring gun is arranged at the tail end of the vertical telescopic air cylinder and is used for installation of a temperature thermocouple; a couple separation part is arranged at the top of the temperature measuring gun; and a thermocouple storage mechanism and a thermocouple fire extinguishing tank are arranged at the top of the slag skimmer. According to the online measuring device and method, the temperature measuring time is determined by calculating the effective tapping time, complicated production conditions that a tapping hole of a blast furnace is blocked, tapping of the tapping hole is suspended, and the blast furnace can not run smoothly are effectively handled, and the influence of subjective factors of operators is avoided, so that the online automatic measurement of the blast furnace molten iron is realized to cope with the complex production conditions.

Description

technical field [0001] The invention relates to the technical field of blast furnace molten iron temperature measurement, in particular to an online measuring device and method for the temperature of large blast furnace molten iron. Background technique [0002] Blast furnace ironmaking is an important link in steel production, and it is also the most widely used ironmaking process. During the blast furnace production process, iron ore, coke, and flux (limestone) for slagging are loaded from the top of the furnace, and from the lower part of the furnace along the circumference of the furnace. The tuyere blows in preheated air. At high temperature, the carbon in the coke is burned with the oxygen blown into the air to form carbon monoxide, and the iron oxides in the ore are reduced during the ascension process in the furnace to obtain molten iron, and the unreduced impurities in the iron ore are combined with fluxes such as limestone to form Slag, the high-temperature molten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/24C21B5/00
CPCC21B5/006C21B7/24
Inventor 盛国良吴宏亮
Owner MAANSHAN IRON & STEEL CO LTD
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