CN102234199A

CN102234199A - High-titanium furnace protection stemming

Info

Publication number: CN102234199A
Application number: CN201110096711XA
Authority: CN
Inventors: 李烈钧; 李明建; 李烈选; 宋金峰; 董国防; 梁高
Original assignee: XIXIA XINJIN NAIHUA CO Ltd
Current assignee: XIXIA XINJIN NAIHUA CO Ltd
Priority date: 2011-04-18
Filing date: 2011-04-18
Publication date: 2011-11-09
Anticipated expiration: 2031-04-18
Also published as: CN102234199B

Abstract

The invention discloses high-titanium furnace protection stemming, which comprises the components in percentages by weight: 75-85% of titanium concentrate and/or rutile, 2-5% of clay, 1-3% of mica, 10-15% of tar and 2-5% of asphalt, and is finely prepared by using a stemming preparation process. By use of the stemming, the safe production of a blast furnace can be ensured, and the hearth part (in particular the part around a taphole) is synchronously eroded with other parts basically. Therefore, the normal production of the blast furnace cannot be influenced by the early thinning of the part close to the taphole of the hearth part, and the service life of the entire blast furnace can be prolonged by one to two years so that enormous economic and social benefits are generated.

Description

The high-titanium protection stove stemming

Technical field

The invention belongs to the ironmaking technical field of refractory materials, be specifically related to a kind of high-titanium protection stove stemming.

Background technology

Titaniferous iron ore is when ironmaking, and slag is thickness very, does not have flowability.Adhere to very thickly during smelting on the blast furnace furnace wall, make heat size more and more littler, have a strong impact on furnace processor and normal running.According to this character of titanium-contained slag, when blast furnace approaches to the later stage furnace wall, add this slag in the stove, it is adhered on the furnace wall, reach the purpose of furnace retaining, this slag why has this character to be because TiO ₂Content is higher.

In blast furnace is produced, cupola well is the most important position of blast furnace, iron notch is in its underpart, in its frequent process of tapping a blast furnace, and the washing away of molten iron, the erosion of slag, cause iron notch position depression darker, the furnace wall is more and more thinner herein, and iron notch is more and more shallow, have a strong impact on the safety in production of blast furnace, cause a lot of blast furnaces to be forced to overhaul.

Summary of the invention

In order to address the above problem, the purpose of this invention is to provide a kind of high-titanium protection stove stemming, protect the cupola well at iron notch place.

For achieving the above object, high-titanium protection stove stemming of the present invention be by weight percent be 75～85% ilmenite concentrate and or rutile, 2～5% clays, 1～3% mica, 10～15% tar and 2～5% pitches form by the stemming manufacture technology of strictness is refining.

The use of this stemming has guaranteed the safety in production of blast furnace, and basic and other position, cupola well position (especially around the iron notch place) is corroded synchronously.Or else can make and improve one to two year whole blast furnace campaign because of near the too early too fast attenuation iron notch of stove cylinder position influences the ordinary production of blast furnace, produce great economic benefit and social benefit.

Use this stemming on the situation that ironmaking cost increases hardly, guaranteed safety in production, improved blast furnace campaign, this performance of stemming, be to utilize functional refractory that blast furnace is carried out local the most effective means of repairing, realize that fettling without the blowing out damping down, makes stove repair voluntarily in ordinary production unconsciously, the working of a furnace is normal.

Embodiment

High-titanium protection stove stemming of the present invention be by weight percent be 75～85% ilmenite concentrate and or rutile (main component is TiO ₂), 2～5% clays, 1～3% mica, 10～15% tar and 2～5% pitches form by the stemming manufacture technology of strictness is refining.

During use, with the high-titanium protection stove stemming of the present invention clay gun front end of packing into, general stemming is still adorned in the rear end, the high titanium stemming in back of blocking up forms a mud drum in cupola well, be still general stemming in the iron notch, carrying out along with iron manufacturing process, the titaniferous clay gun constantly fuses in the slag, forms Ti-containing slag, along with the come-up and the decline of top of the slag examination, stick near the depression position of the cupola well of iron notch, under the effect of cooling stave, curing is more and more thicker gradually, forms artificial skull furnace retaining layer, thereby guaranteed that cupola well position thickness and other position are basic identical herein, with the normal direct motion that guarantees to produce.The iron notch place working of a furnace can be judged according to the cooling stave water temperature, also can squeeze into the depth according to stemming and judge.

Claims

1. high-titanium protection stove stemming, it is characterized in that described high-titanium protection stove stemming be by weight percent be 75～85% ilmenite concentrate and or rutile, 2～5% clays, 1～3% mica, 10～15% tar and 2～5% pitches form by the stemming manufacture technology of strictness is refining.