CN205580212U

CN205580212U - Hot stove in long -life ore deposit

Info

Publication number: CN205580212U
Application number: CN201620069886.XU
Authority: CN
Inventors: 马永宁; 魏新华; 李兴波; 梁珠祥
Original assignee: SHAANXI SHENGHUA YEHUA CO Ltd
Current assignee: SHAANXI SHENGHUA YEHUA CO Ltd
Priority date: 2016-01-25
Filing date: 2016-01-25
Publication date: 2016-09-14
Anticipated expiration: 2026-01-25

Abstract

The utility model discloses a hot stove in long -life ore deposit, including six tapping holes, the contained angle between the adjacent tapping hole is 60 degrees, reduces the use frequency of every tapping hole relatively, tapping hole place is regional be highly being the annular region of 1.2 meters 1.2 meters, width, and this annular region adoption trapezoidal brick is built by laying bricks or stones. The tapping hole adopts compound heat -resisting brick to constitute, and the heat -resisting brick of this complex mixes the back sintering by the silicon nitride granule with silicon carbide particle and makes. The material of blocking up of tapping hole adopts the anhydrous mud ball of carbon that contains carborundum. The loading softening temperature of compound heat -resisting brick is up to more than 1780 DEG C. The utility model discloses a tapping hole is chooseed for use and is adopted compound heat -resisting brick to constitute, and the tapping hole is longe -lived, and the anxious heat of violent rapid cooling is avoided to compound heat -resisting brick, and what the material of blocking up of tapping hole can be fine fuses the sintering with compound heat -resisting brick, a small amount of loss of iron mouthful department when the every stove of effectual continuous replenishment taps a blast furnace.

Description

A kind of long-life mineral hot furnace

Technical field:

This utility model belongs to field of metallurgy, relates to a kind of long-life mineral hot furnace, and especially one Plant the tapping hole of the long-life mineral hot furnace producing calcium-silicon.

Background technology:

General mineral hot furnace furnace lining is by steel plate, heat insulation layer, thermal insulation layer, heat-insulation layer and high temperature Working lining composition, its major function is adiabatic and insulation.But because calcium-silicon product is smelted Temperature is high, and the corrosion function that furnace charge is to furnace lining, and lining durability is the shortest, it is sometimes desirable to Within one month, changing a furnace lining, cause production cost to increase, economic benefit reduces.Meanwhile, Existing furnace lining heat preservation and insulation is poor, and the heat loss of furnace lining surface radiating is up to 8.75%；This Outward, compactness and the globality of furnace lining are the most poor, especially the cementitiousness between furnace bottom brickwork joint Low, cause high-temp. furnace material that bottom working lining is destroyed serious；Reduce the heat-insulation and heat-preservation of furnace bottom Performance and used life.

Secondly, calcium-silicon mineral hot furnace lining durability, the particularly life-span of tapping hole direct shadow Ring furnace life.When tapping a blast furnace, tapping hole is periodically invaded by high temperature, mechanical stress and chemistry Erosion, causes ferrum mouth to wash away seriously, damages fast, and general mineral hot furnace is equipped with 2-4 and taps a blast furnace Mouthful, cause it to use frequently, cause the easy scaling loss of tapping hole, difficult repairing, and then reduce furnace lining Service life.

Utility model content:

The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, it is provided that a kind of long-lived Life mineral hot furnace, the selection of this tapping hole uses composite heat resistance brick to constitute, and the tapping hole life-span is long, compound Heat resisting brick avoids violent rapid heat cycle, and the material of blocking up of tapping hole can good and composite heat resistance brick Merge sintering, be effectively continuously replenished a small amount of loss at ferrum mouth when every stove taps a blast furnace.

The purpose of this utility model solves by the following technical programs:

A kind of long-life mineral hot furnace, including six tapping holes, the angle between adjacent tapping hole is 60 degree, the frequency of usage of each tapping hole of relative reduction；Described tapping hole region is high The annular region that degree is 1.2 meters, width is 1.2 meters, this annular region uses trapezoidal brick to build by laying bricks or stones.

Described tapping hole use composite heat resistance brick constitute, this composite heat resistance brick by silicon nitride particle with Sinter after silicon-carbide particle mixing and make.

The material of blocking up of described tapping hole uses the anhydrous mud ball of carbonaceous of silicon carbide-containing.

The refractoriness under load of described composite heat resistance brick is up to more than 1780 DEG C.

Described tapping hole zone length is 1.2 meters, width is 1.2 meters, height is 1.2 meters.

Described mineral hot furnace furnace lining is by steel plate layer, heat insulation layer, thermal insulation layer, heat-insulation layer and hot operation Layer is constituted；Described hot operation layer is by overlapping successively upper carbon brick layer, middle carbon brick layer and lower carbon brick Layer is constituted, and between brickwork joint and the brickwork joint of middle carbon brick layer of upper carbon brick layer, angle is 60 degree, middle carbon Between brickwork joint and the brickwork joint of lower carbon brick layer of brick layer, angle is 60 degree.

The beneficial effects of the utility model are: tapping hole of the present utility model is selected to use and is combined Heat resisting brick is constituted, and the tapping hole life-span is long, and composite heat resistance brick avoids violent rapid heat cycle, tapping hole Material of blocking up well can merge with composite heat resistance brick and sinter, be effectively continuously replenished every stove and go out Being lost on a small quantity at ferrum mouth during ferrum.

Accompanying drawing illustrates:

Fig. 1 is mineral hot furnace furnace lining structure schematic diagram；

Fig. 2 is mineral hot furnace tapping hole layout drawing；

Fig. 3 is tapping hole sectional view；

Fig. 4 is tapping hole vertical structure figure；

Wherein: 1 be upper carbon brick layer, 2 be middle carbon brick layer, 3 be lower carbon brick layer, 4 for tapping hole.

Detailed description of the invention:

Below in conjunction with embodiment, this utility model is described in further detail:

See Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of long-life mineral hot furnace, tap a blast furnace including six Mouthful, the angle between adjacent tapping hole is 60 degree, the use frequency of each tapping hole of relative reduction Secondary；Described tapping hole region be height be 1.2 meters, width be the annular region of 1.2 meters, This annular region uses trapezoidal brick to build by laying bricks or stones.

A. silicon nitride combined silicon carbide brick selected by tapping hole, and its refractoriness under load is up to 1780 DEG C Above, and its high temperature oxidation resistance is preferable, but its rapid heat cycle is poor, building by laying bricks or stones of bit brick It is effectively reduced thermal stress, prevents heat broken；Tapping hole part uses 1.2 × 1.2 × 1.2m's Silicon nitride combined silicon carbide material and masonry way, increase this region accumulation of heat volume, it is to avoid acutely Rapid heat cycle, extends tapping hole service life, and the masonry way of tapping hole is shown in Fig. 1；

B. every electric furnace arranges 6 tapping hole rotations and uses: making of each tapping hole of relative reduction By the frequency, the material of blocking up of tapping hole uses the anhydrous mud ball of carbonaceous of silicon carbide-containing, and it can be fine With silicon nitride combined silicon carbide material merge sintering, be effectively continuously replenished ferrum when every stove taps a blast furnace A small amount of loss at Kou, meanwhile, periodically to the position that tapping hole is outside and iron notch oxidation is serious Repair with the thickener of making firm by ramming of silicon carbide-containing, while guaranteeing to tap a blast furnace smoothly, greatly extend Ferrum mouth service life；

C. furnace lining uses self-baked charcoal brick, forms 60 ° of differential seat angles, build between each layer of furnace bottom brick fuel Build mode as it is shown in figure 1, each stove eye interval brick fuel use trapezoidal brick (in Fig. 1 annular shadow part Be divided into trapezoidal brick) form build by laying bricks or stones, trapezoidal brick primarily to as far as possible reduce and furnace wall between Gap, and after high-temperature roasting expands, overall consistency is high, can effectively prevent high-temp liquid The accident burning furnace wall occurs, and increases the reaction compartment of burner hearth to greatest extent simultaneously.

Above content be combine that this utility model made by concrete preferred implementation enter one Step describes in detail, it is impossible to assert that detailed description of the invention of the present utility model is only limitted to this, for this For utility model person of an ordinary skill in the technical field, without departing from this utility model structure On the premise of think of, it is also possible to make some simple deduction or replace, all should be considered as belonging to this Utility model is determined scope of patent protection by the claims submitted to.

Claims

1. a long-life mineral hot furnace, it is characterised in that: including six tapping holes, the angle between adjacent tapping hole is 60 degree；Described tapping hole region is to be highly 1.2 meters, the annular region of width 1.2 meters, and this annular region uses trapezoidal brick to build by laying bricks or stones.

2. long-life mineral hot furnace as claimed in claim 1, it is characterised in that: described mineral hot furnace furnace lining is made up of steel plate layer, heat insulation layer, thermal insulation layer, heat-insulation layer and hot operation layer；Described hot operation layer is made up of upper carbon brick layer, middle carbon brick layer and lower carbon brick layer overlapping successively, and between brickwork joint and the brickwork joint of middle carbon brick layer of upper carbon brick layer, angle is 60 degree, and between brickwork joint and the brickwork joint of lower carbon brick layer of middle carbon brick layer, angle is 60 degree.