CN205329090U

CN205329090U - Novel blast -furnace tuyere lining structure

Info

Publication number: CN205329090U
Application number: CN201620122120.3U
Authority: CN
Inventors: 徐瑞图
Original assignee: MINGGUANG RIEL NON-METALLIC MATERIALS Co Ltd
Current assignee: Mingguang Ruier Jingda Technology Co ltd
Priority date: 2016-02-16
Filing date: 2016-02-16
Publication date: 2016-06-22
Anticipated expiration: 2026-02-16

Abstract

The utility model discloses a novel blast -furnace tuyere lining structure, first arc wear pad has cup jointed the pyroceram barrel casing with second arc wear pad's outer wall, first arc wear pad and second arc wear pad form by first corundum nitrogenize silica brick, second corundum nitrogenize silica brick and third corundum nitrogenize silica brick, and first corundum nitrogenize silica brick, second corundum nitrogenize silica brick and third corundum nitrogenize silica brick all includes first arc corundum silicon nitride and second arc corundum silicon nitride, first draw -in groove and second draw -in groove have been opened respectively to the relative lateral wall of first arc corundum silicon nitride, the relative lateral wall of second arc corundum silicon nitride respectively integrated into one piece have with the first fixture block and the second fixture block of first draw -in groove and second draw -in groove looks adaptation, and first arc corundum silicon nitride and second arc corundum silicon nitride to pass through the second draw -in groove fixed with first fixture block cooperation combination. The utility model discloses simple structure, the practicality is stronger.

Description

A kind of new type BF tuyere inner lining structure

Technical field

This utility model relates to blast-furnace tuyere technical field, is specially a kind of new type BF tuyere inner lining structure。

Background technology

Ironmaking or steel-making blast furnace are to heat air delivery in blast furnace by the blast-furnace tuyere put on it, to provide oxygen to meet the needs of manUfaCtUre of pig iron, wherein the blast-furnace tuyere as the use of inner sleeve air port is nearer from the blast-furnace roasting district that temperature is higher, blast-furnace tuyere to bear the heat radiation of combustion zone and the impact of convection current, abrasion also subject to decline logistics, washing away of the abrasion of Coal powder spray and combustion product and air-flow, and the splashing of scum, the scorification of flowing molten iron, blast-furnace tuyere is under this very exacting terms, it is highly susceptible to damage, therefore the length in service life of blast-furnace tuyere will directly affect the service cycle of blast furnace and product yield and economic benefit。

Current pulverized coal injection has become strengthening in blast furnace ironmaking process, consumption reduction, has reduced CO₂The important means of discharge, along with the development of blast furnace smelting technology and the further of coal injection of draught amount are improved, blast-furnace tuyere is proposed increasingly higher technology requirement, when severe, energy prices rise steadily current energy source situation gradually, deeply it is subject to the concern of people with the ironmaking power-saving technology that pulverized coal injection is representative。But, along with the raising of injecting coal quantity, coal dust spouting velocity is accelerated, and air port abrasion aggravation, air port reduces service life。According to the production leadtime of certain iron company 10 seat height stove, because the air port of coal injection abrasion replacing is the 30%-40% of air port total losses amount。Thus, high-abrasive material lining is inlayed at tuyere cover of blast furnace inner chamber, but the shortcoming that these technique ubiquity wearing layers are low with substrate combinating strength, and at wearing layer in castingin process, due to than relatively thin, intensity is low, easily washed away by molten metal in casting process so that the yield rate of tuyere cover of blast furnace foundry goods is low。Further, traditional liner is adopt one-body molded casting to form mostly, and after being subject to high temperature, it can produce certain expansion, once produce to expand, and service life affecting liner that can be serious。

Utility model content

The purpose of this utility model is in that to provide a kind of new type BF tuyere inner lining structure, with the problem solving to propose in above-mentioned background technology。

For achieving the above object, this utility model provides following technical scheme: a kind of new type BF tuyere inner lining structure, including the first arc wear plate and the second arc wear plate, described first arc wear plate and the second arc wear plate are mutually combined together into cylindric, and first the outer wall of arc wear plate and the second arc wear plate be socketed with refractory ceramics jacket casing, described first arc wear plate and the second arc wear plate nitrogenize silica brick by the first corundum, second corundum nitrogenizes silica brick and the 3rd corundum nitrogenizes silica brick composition, and first corundum nitrogenize silica brick, second corundum nitrogenizes silica brick and the 3rd corundum nitrogenizes silica brick and all includes the first arc corundum silicon nitride and the second arc corundum silicon nitride, the opposing sidewalls of described first arc corundum silicon nitride has the first draw-in groove and the second draw-in groove, the opposing sidewalls of described second arc corundum silicon nitride is respectively integrally formed with first fixture block suitable with the first draw-in groove and the second draw-in groove and the second fixture block, and first arc corundum silicon nitride and the second arc corundum silicon nitride coordinate combination to fix by the second draw-in groove and the first fixture block。

Preferably, the two ends of described refractory ceramics jacket casing are also integrally formed with the spacing fixture block suitable with the first arc wear plate and the second arc wear plate。

Preferably, between described first arc wear plate and the second arc wear plate, also leave gap, and gap length is 0.5mm-1mm。

Compared with prior art, the beneficial effects of the utility model are: this new type BF tuyere inner lining structure simple in construction, by being provided with the first arc wear plate and the second arc wear plate at the inwall of refractory ceramics jacket casing, and first arc wear plate and the second arc wear plate nitrogenized silica brick by the first corundum, second corundum nitrogenizes silica brick and the 3rd corundum nitrogenizes silica brick composition, corundum nitrogenizes silica brick and has good heat-resisting quantity and thermal shock resistance, make the longer service life of this air port liner, and, adopt many group corundum to nitrogenize silica brick to combine, the phenomenon making it that thermal expansion will not occur after being subject to high temperature and to rupture, greatly extend its service life。

Accompanying drawing explanation

Fig. 1 is this utility model structural representation；

Fig. 2 is this utility model the second arc wear plate structural representation。

In figure: 1 first arc wear plate, 2 second arc wear plates, 21 first corundum nitrogenize silica brick, 211 first arc corundum nitrogenize silica brick, 212 second arc corundum nitrogenize silica brick, 213 first draw-in grooves, 214 second draw-in grooves, 215 first fixture blocks, 216 second fixture blocks, 22 second corundum nitrogenize silica brick, 23 the 3rd corundum nitrogenize silica brick, 3 refractory ceramics jacket casings。

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments。Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection。

Refer to Fig. 1-2, this utility model provides a kind of technical scheme: a kind of new type BF tuyere inner lining structure, including the first arc wear plate 1 and the second arc wear plate 2, it is characterized in that: the first arc wear plate 1 and the second arc wear plate 2 are mutually combined together into cylindric, gap is also left between first arc wear plate 1 and the second arc wear plate 2, and gap length is 0.5mm-1mm, gap can effectively reduce the coefficient of expansion expanded with heat and contract with cold, effectively extend its service life, and first the outer wall of arc wear plate 1 and the second arc wear plate 2 be socketed with refractory ceramics jacket casing 3, the two ends of refractory ceramics jacket casing 3 are also integrally formed with the spacing fixture block suitable with the first arc wear plate 1 and the second arc wear plate 2, arc wear plate can be effectively fixed by spacing fixture block, first arc wear plate 1 and the second arc wear plate 2 nitrogenize silica brick 21 by the first corundum, second corundum nitrogenizes silica brick 22 and the 3rd corundum nitrogenizes silica brick 23 and forms, and first corundum nitrogenize silica brick 21, second corundum nitrogenizes silica brick 22 and the 3rd corundum nitrogenizes silica brick 23 and all includes the first arc corundum silicon nitride 211 and the second arc corundum silicon nitride 212, the opposing sidewalls of the first arc corundum silicon nitride 211 has the first draw-in groove 213 and the second draw-in groove 214, the opposing sidewalls of the second arc corundum silicon nitride 212 is respectively integrally formed with first fixture block 215 and second fixture block 216 suitable with the first draw-in groove 213 and the second draw-in groove 214, and first arc corundum silicon nitride 211 and the second arc corundum silicon nitride 212 coordinates to combine with the first fixture block 215 by the second draw-in groove 214 and fixes, by being provided with the first arc wear plate 1 and the second arc wear plate 2 at the inwall of refractory ceramics jacket casing 3, and first arc wear plate 1 and the second arc wear plate 2 nitrogenized silica brick 21 by the first corundum, second corundum nitrogenizes silica brick 22 and the 3rd corundum nitrogenizes silica brick 23 and forms, corundum nitrogenizes silica brick and has good heat-resisting quantity and thermal shock resistance, make the longer service life of this air port liner, and, adopt many group corundum to nitrogenize silica brick to combine, the phenomenon making it that thermal expansion will not occur after being subject to high temperature and to rupture, greatly extend its service life。

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, being appreciated that when without departing from principle of the present utility model and spirit and these embodiments can be carried out multiple change, amendment, replacement and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof。

Claims

1. a new type BF tuyere inner lining structure, including the first arc wear plate (1) and the second arc wear plate (2), it is characterized in that: described first arc wear plate (1) and the second arc wear plate (2) are mutually combined together into cylindric, and first the outer wall of arc wear plate (1) and the second arc wear plate (2) be socketed with refractory ceramics jacket casing (3), described first arc wear plate (1) and the second arc wear plate (2) nitrogenize silica brick (21) by the first corundum, second corundum nitrogenizes silica brick (22) and the 3rd corundum nitrogenizes silica brick (23) composition, and first corundum nitrogenize silica brick (21), second corundum nitrogenizes silica brick (22) and the 3rd corundum nitrogenizes silica brick (23) and all includes the first arc corundum silicon nitride (211) and the second arc corundum silicon nitride (212), the opposing sidewalls of described first arc corundum silicon nitride (211) has the first draw-in groove (213) and the second draw-in groove (214), the opposing sidewalls of described second arc corundum silicon nitride (212) is respectively integrally formed with first fixture block (215) suitable with the first draw-in groove (213) and the second draw-in groove (214) and the second fixture block (216), and first arc corundum silicon nitride (211) and the second arc corundum silicon nitride (212) coordinate combination fixing by the second draw-in groove (214) with the first fixture block (215)。

2. a kind of new type BF tuyere inner lining structure according to claim 1, it is characterised in that: the two ends of described refractory ceramics jacket casing (3) are also integrally formed with the spacing fixture block suitable with the first arc wear plate (1) and the second arc wear plate (2)。

3. a kind of new type BF tuyere inner lining structure according to claim 1, it is characterised in that: also leave gap between described first arc wear plate (1) and the second arc wear plate (2), and gap length is 0.5mm-1mm。