CN106365645A

CN106365645A - Burner prefab for calcining kiln and preparation method thereof

Info

Publication number: CN106365645A
Application number: CN201610731579.8A
Authority: CN
Inventors: 汤炼芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-02-11
Filing date: 2015-02-11
Publication date: 2017-02-01
Also published as: CN106220207A; CN104591763A; CN106220205A; CN106396691A; CN104591763B

Abstract

The invention discloses a burner prefab for a calcining kiln and a preparation method thereof. The burner prefab for the calcining kiln is prepared from fused millite, Si2Al4O4N4, Al3BC3, zirconium spinel, strontium carbonate powder, vanadium carbide powder, aluminum oxide micro powder, high-alumina cement, composite powder, an additive and an aluminum chloride solution. The burner prefab is formed through a self flowing pouring method, and after maintaining and drying are conducted, heat treatment is conducted at high temperature. Compared with the traditional castable, the product has the advantages of achieving self flowing construction and self-defoaming, being resistant to stripping, high in wear resistance and long in service life and the like, and the burner prefab can be widely applied to burner prefabs of various calcining kilns used in a refractory industry, a lime industry, a calcined ore industry and a metallurgical industry.

Description

A kind of calcining kiln burner prefabricated component and preparation method

The application is the divisional application of Application No. 201510071591.6.

Technical field

The present invention relates to a kind of calcining kiln burner prefabricated component and preparation method, more particularly, to refractory raw material calcining row Industry, cement industry, lime industry, ore deposit calcines industry, the calcining kiln burner prefabricated component used by metallurgy industry and preparation method.

Background technology

Traditional burner is all generally to carry out vibrating casting molding using balk cargo using scene, thus extend stopping The cycle of kiln, long construction period, field labor intensity are big, construction when add water many, length curing cycle, final products short life, because And have impact on the normal production of rotary kiln.Existing castable product also is difficult to meet the anti-stripping during burner uses simultaneously Fall, short life, the problems such as construction quality segregation is unstable.Prefabricated component refers to change supply of material pattern: burner is complete in fire resisting factory Become cast, maintenance and heat treatment, then this product is moved to producer and directly use, the exploitation of this kind of product thoroughly solves tradition The site operation weakness of Unshaped Casting Refractories.

Content of the invention

The purpose of the present invention is exactly that thermal shock resistance is poor in order to solve product not anti-strip, and short life and construction quality are poor Defect, provides a kind of calcining kiln burner prefabricated component and preparation method, and the preform product made disclosure satisfy that rotary kiln fires The anti-strip that burner requires, the long-life, thermal shock resistance is high, easy construction, the problems such as steady quality.

For solve above-mentioned technical problem, the present invention adopt the following technical scheme that prefabricated component by hercynite, si₂al₄o₄n₄、al₃bc₃, zirconium spinel, strontium carbonate powder, carbonization vanadium powder, alumina powder, alumina cement, composite powder, additive With liquor alumini chloridi composition.

Hercynite, si in raw material₂al₄o₄n₄、al₃bc₃, zirconium spinel, strontium carbonate powder, carbonization vanadium powder, aluminium oxide is micro- Powder, alumina cement, the parts by weight of composite powder are: hercynite 15-20 part, si₂al₄o₄n₄20-25 part, al₃bc₃7-12 Part, zirconium spinel 20-28 part, strontium carbonate powder 1-3 part, carbonization vanadium powder 2-4 part, alumina powder 8-12 part, alumina cement 3-7 Part, composite powder 0-1 part.The percentage ratio that liquor alumini chloridi, the addition of additive account for above-mentioned gross weight respectively is: liquor alumini chloridi 9%, additive is 0.2-0.3%；Composite powder is made up of leucite powder and kaliophilite powder, and its weight compares 1:1.

Described additive is sulfonated melamine compound resin, isooctanol, 5- Sulfonic Salicylic Acid, and three's weight ratio is for 2: 1:1.Described liquor alumini chloridi density is 1.25 grams/cc, ph3.5 about, viscosity 0.006kpa.s.

Above-mentioned each raw material is carried out dispensing in above ratio, after mix homogeneously, the method using gravity flow pouring shapes, through supporting After shield, drying, carry out heat treatment at high temperature, obtain this burner prefabricated component.

The preparation method of the present invention is:

Step one, batch mixing and stirring, prepare raw material by proportioning, add additive, stir in blender, stir After add liquor alumini chloridi, from flow valuve control 200 mm；Step 2, shaping, maintenance and drying, shape: mould is pacified Install, add the stirring compound being stirred, deadweight and surface tension by compound are shakeout；The material of excess surface is erased；Support Shield: the good sample of gravity flow pouring and mould are put into 25 DEG C of thermostatic chambers, the demoulding after hardening on inspection, natural curing 48 again after the demoulding Hour；It is dried: the good sample of maintenance carries out 110 DEG C of 24h drying and processings in electrical kiln, close power supply and treat that it is cooled to room temperature；Step Rapid three, heat treatment, dried sample is put in heating furnace, begins to warm to 300 DEG C according to 5 DEG C/min, then with 10 DEG C/min Speed be raised to 1000 DEG C, and be incubated 3 hours；After end, naturally cool to room temperature, obtain this rotary kiln after coming out of the stove with prefabricated Part.

The bulk density of gained prefabricated component in 2.7g/cm3, strength at normal temperature 25mpa, wear-resisting be less than 4, service life exists More than 18 months.

The present invention has obtained a kind of anti-strip, long-life, gravity flow construction, the calcining kiln burner prefabricated component of self-defoaming. This prefabricated component is high temperature resistant, anti-strip, the long-life, improves the running rate of rotary kiln industry, gravity flow pouring during construction, and pore is permissible Voluntarily eliminate, it is to avoid the quality segregation that vibrating casting material produces, the shortcoming that changes original bulk productss, the opening of this kind of product Send out the site operation weakness thoroughly solving traditional Unshaped Casting Refractories.

Specific embodiment

Embodiment 1,16 parts of hercynite, si₂al₄o₄n₄25 parts, al₃bc₃12 parts, 20 parts of zirconium spinel, strontium carbonate powder 3 Part, 4 parts of carbonization vanadium powder, 12 parts of alumina powder, 7 parts of alumina cement, 1 part of composite powder.Add additive, be sufficiently mixed uniformly Afterwards, then add liquor alumini chloridi.The percentage ratio that liquor alumini chloridi, the addition of additive account for above-mentioned gross weight respectively is: Liquor alumini chloridi 9%, additive is 0.3%.

Embodiment 2,17 parts of hercynite, si₂al₄o₄n₄24 parts, al₃bc₃12 parts, 20 parts of zirconium spinel, strontium carbonate powder 3 Part, 4 parts of carbonization vanadium powder, 12 parts of alumina powder, 7 parts of alumina cement, 1 part of composite powder.Add additive, be sufficiently mixed uniformly Afterwards, then add liquor alumini chloridi.The percentage ratio that liquor alumini chloridi, the addition of additive account for above-mentioned gross weight respectively is: Liquor alumini chloridi 9%, additive is 0.2%.

Embodiment 3,18 parts of hercynite, si₂al₄o₄n₄23 parts, al₃bc₃12 parts, 21 parts of zirconium spinel, strontium carbonate powder 3 Part, 4 parts of carbonization vanadium powder, 12 parts of alumina powder, 7 parts of alumina cement, 0 part of composite powder.Add additive, be sufficiently mixed uniformly Afterwards, then add liquor alumini chloridi.The percentage ratio that liquor alumini chloridi, the addition of additive account for above-mentioned gross weight respectively is: Liquor alumini chloridi 9%, additive is 0.3%.

Embodiment 1,2,3 follow-up preparation technology is:: mould installion is good, add the stirring compound being stirred, by mixed Close the deadweight of material and surface tension is shakeout；The material of excess surface is erased；Maintenance: the good sample of gravity flow pouring and mould are put into 25 DEG C thermostatic chamber, the demoulding after hardening on inspection, natural curing 48 hours again after the demoulding；It is dried: the good sample of maintenance enters in electrical kiln 110 DEG C of 24h drying and processings of row, close power supply and treat that it is cooled to room temperature；Step 3, heat treatment, heating put into by dried sample In stove, begin to warm to 300 DEG C according to 5 DEG C/min, then be raised to 1000 DEG C with the speed of 10 DEG C/min, and be incubated 3 hours；Terminate Afterwards, naturally cool to room temperature, after coming out of the stove, obtain this calcining kiln kiln burner prefabricated component.

Claims

1. a kind of calcining kiln with burner prefabricated component it is characterised in that: by hercynite, si₂al₄o₄n₄、al₃bc₃, zirconium point brilliant Stone, strontium carbonate powder, carbonization vanadium powder, alumina powder, alumina cement, composite powder, additive and liquor alumini chloridi composition；Wherein, Hercynite 15-20 part, si₂al₄o₄n₄20-25 part, al₃bc₃7-12 part, zirconium spinel 20-28 part, strontium carbonate powder 1-3 Part, carbonization vanadium powder 2-4 part, alumina powder 8-12 part, alumina cement 3-7 part, composite powder 0-1 part；Liquor alumini chloridi, additional The percentage ratio of the addition of agent above-mentioned gross weight respectively is: liquor alumini chloridi 9%, and additive is 0.2-0.3%；Composite powder is by white pomegranate Stone powder and kaliophilite powder composition, its weight compares 1:1；Additive is sulfonated melamine compound resin, isooctanol, 5- sulfonic acid bigcatkin willow Acid, three's weight is than for 2:1:1.

2. a kind of calcining kiln according to claim 1 with burner prefabricated component it is characterised in that: described liquor alumini chloridi Density is 1.25 grams/cc, ph3.5 about, viscosity 0.006kpa.s.

3. a kind of calcining kiln according to claim 1 with the preparation method of burner prefabricated component it is characterised in that: step First, batch mixing and stirring, prepares raw material by proportioning, adds additive, stirs in blender, add after stirring Liquor alumini chloridi, controls 200 mm from flow valuve；Step 2, shaping, maintenance and drying, shape: mould installion is good, add The stirring compound being stirred, deadweight and surface tension by compound are shakeout；The material of excess surface is erased；Maintenance: will flow automatically Pour the sample being poured in and 25 DEG C of thermostatic chambers put into by mould, the demoulding after hardening on inspection, natural curing 48 hours again after the demoulding；Dry Dry: the good sample of maintenance carries out 110 DEG C of 24h drying and processings in electrical kiln, close power supply and treat that it is cooled to room temperature；Step 3, heat Process, dried sample is put in heating furnace, begins to warm to 300 DEG C according to 5 DEG C/min, then the speed liter with 10 DEG C/min To 1000 DEG C, and it is incubated 3 hours；After end, naturally cool to room temperature, obtain this calcining kiln burner after coming out of the stove prefabricated Part.