KR950018488A - Prediction method of outbreak during blast furnace operation - Google Patents

Prediction method of outbreak during blast furnace operation Download PDF

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Publication number
KR950018488A
KR950018488A KR1019930031777A KR930031777A KR950018488A KR 950018488 A KR950018488 A KR 950018488A KR 1019930031777 A KR1019930031777 A KR 1019930031777A KR 930031777 A KR930031777 A KR 930031777A KR 950018488 A KR950018488 A KR 950018488A
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South Korea
Prior art keywords
blast furnace
prediction
during blast
item
items
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KR1019930031777A
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Korean (ko)
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KR950010237B1 (en
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이상호
서광용
이완중
Original Assignee
조말수
포항종합제철 주식회사
백덕현
재단법인산업과학기술연구소
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Priority to KR1019930031777A priority Critical patent/KR950010237B1/en
Publication of KR950018488A publication Critical patent/KR950018488A/en
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Publication of KR950010237B1 publication Critical patent/KR950010237B1/en

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Blast Furnaces (AREA)

Abstract

본 발명은 고로조업시 장입물 이상 강하의 하나인 취발(날바람)예측에 관한 것으로서, 취발 특성상 장입물의 강하나 존데등의 데이터만을 가지고 예측하는 종래의 방법을 보완하여 데이터의 교란이 빙발하는 장입물 강하 및 샤프트 압력바란스에 의존하는 시스템에서 탈피하여 이미 조업을 통해서 수차례 경험한 취발성을 토대로 취발 발생전에 거의 경험디는 저선레벨과 어보브 버든 프로브(above burdden probe)(이하,"AB probe"라 함)의 편차등의 데이터를 취발 예측시스템을 구성하고자 하는데, 그 목적이 있다.The present invention relates to the prediction of brittleness (a breeze), which is one of the abnormalities of the charged contents during blast furnace operation. Low-level and above-mentioned burdden probes ("AB probes"), which are almost experienced before the occurrence of the blow, based on the brittleness already experienced several times in the operation away from the system depending on the drop and the shaft pressure balance. The purpose of this study is to construct a prediction system for data on deviations, etc.).

본 발명은 고로조업중 취발현상에 대한 예측에 있어서 노내 통기성을 진단하는 단계; △ P ＞ 1.8kg/cm2에서 즉시 취발현상임을 결정하고, △ P ＞ 1.8kg/cm2에서 통기성과 노내저선 level지수의 동반변호를 고려하여 취발특성으로 정의한 조업인자의 적정한 가공결과를 종합하여 취발예측을 판단한 다음, 통기성과 저선 level을 앞서의 취발예측판단과 종합하여 감풍, 감광, 출선작업감시방법등에 대해 연속적으로 조업기준을 제시할 수 있는 단계를 포함하는 것을 특징으로 하는 고로조업중 취발예측방법을 그 요지로 한다.The present invention comprises the steps of diagnosing the in-vehicle breathability in the prediction of the blow-up phenomenon during blast furnace operation; △ P> 1.8kg / cm 2 to determine the immediate take expression in the standing, △ P> the proper processing result of the operating parameters defined by chwibal characteristics in consideration of the accompanying defense of ventilation and the furnace jeoseon level index at 1.8kg / cm 2 Total After judging the prediction of picking out, and combining breathability and low ship level with the above-mentioned picking predictions, and continuously presenting the operation standard on the method of monitoring the wind blasting, dimming, and starting work. The method of predicting extraction is the main point.

Description

고로조업중 취발발생 예측방법Prediction method of outbreak during blast furnace operation

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 고로내에서 발생되는 취발현상을 설명하기 위한 모식도이다.FIG. 1 is a schematic diagram for explaining the extraction phenomenon occurring in the blast furnace.

제2도는 예측 조업지수의 신뢰성 및 가공방법을 평가하기 위한 조업적용도이다.2 is an operation application for evaluating the reliability and processing method of the prediction operation index.

제3도는 본 발명에 의한 취발 예측에 대한 실조업 적용에 따른 실시결과도이다.3 is a result of implementation according to the application of the actual industry to the extraction prediction according to the present invention.

Claims (1)

고로조업중 취발현상을 예측하는 방법에 있어서, 통기성을 판단하는 압력차(△P),저선레벨, 노열,및 스킨 플로우 온도등으로 구성되는 취발조건 항목과 노정압 표준편차, 하부압손 변화, 상부압손변화, AB deviation, 가스 이용율변화, 및 노정 온도등으로 구성되는 취발특성 항목의 조업가능범위를 과거의 조업 데이타에 의해 구하는 단계; 과거의 실적 데이타에 의해 취발현상에 미치는 영향정도에 따라 상기 항목 각각에 대하여 전항목에 대한 가중치를 구하는 단계; 상기 항목별 조업가능범위를 일정구간으로 나누어 각 조업조건구간에 대하여 각 항목에 대한 가중치를 구하는 단계; 및 노내통기성을 판단하는 압력차 (△P)가 1.8kg/cm2을 초과하는 경우에는 취발현상으로 결정하고, 압력차 (△P)가 1.8kg/cm2미만인 경우에는 상기에서 구한 전항목에 대한 가중치와 각 항목에 대한 가중치에 근거하여 취발현상을 예측하는 단계를 포함하여 구성되는 것을 특징으로하는 고로조업중 취발발생 예측방법.In the method of predicting the bleeding phenomenon during blast furnace operation, the bleeding condition items consisting of the pressure difference (ΔP), low line level, frosting, and skin flow temperature, etc. for determining air permeability, the standard deviation of the static pressure, the lower pressure loss change, the upper part Obtaining an operable range of the brittleness characteristic items including change in pressure loss, AB deviation, change in gas utilization rate, and top temperature by using past operation data; Obtaining weights for all the items for each of the items according to the degree of influence on the phenomenon of extraction by past performance data; Obtaining a weight for each item for each operation condition section by dividing the operating range for each item by a predetermined period; And if the pressure difference (ΔP) for determining breathability in the furnace exceeds 1.8 kg / cm 2 , it is determined to be blown out, and if the pressure difference (ΔP) is less than 1.8 kg / cm 2 , all items obtained above are determined. Prediction method for the occurrence of blow out during blast furnace operation, characterized in that it comprises a step of predicting the extraction phenomenon based on the weight for each item and the weight for each item. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930031777A 1993-12-31 1993-12-31 Method of channeling with blast f'ce KR950010237B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930031777A KR950010237B1 (en) 1993-12-31 1993-12-31 Method of channeling with blast f'ce

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930031777A KR950010237B1 (en) 1993-12-31 1993-12-31 Method of channeling with blast f'ce

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KR950018488A true KR950018488A (en) 1995-07-22
KR950010237B1 KR950010237B1 (en) 1995-09-12

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Publication number Priority date Publication date Assignee Title
KR101160009B1 (en) * 2010-09-29 2012-06-25 현대제철 주식회사 Method for predicting channeling during blast furnace operation

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