CN105910441A - Composite heat insulation type furnace face prefabricated block for aluminum anode carbon roasting furnace flue wall and manufacturing method of composite heat insulation type furnace face prefabricated block - Google Patents

Composite heat insulation type furnace face prefabricated block for aluminum anode carbon roasting furnace flue wall and manufacturing method of composite heat insulation type furnace face prefabricated block Download PDF

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Publication number
CN105910441A
CN105910441A CN201610397320.4A CN201610397320A CN105910441A CN 105910441 A CN105910441 A CN 105910441A CN 201610397320 A CN201610397320 A CN 201610397320A CN 105910441 A CN105910441 A CN 105910441A
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heat insulation
insulation type
particle diameter
prefabricated block
flue wall
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CN201610397320.4A
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CN105910441B (en
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张凤鹤
郑全福
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ZHENGZHOU HUITE REFRACTORY MATERIALS CO Ltd
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ZHENGZHOU HUITE REFRACTORY MATERIALS CO Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00Casings; Linings; Walls; Roofs
    • F27D1/04Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • F27D1/06Composite bricks or blocks, e.g. panels, modules
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00Casings; Linings; Walls; Roofs
    • F27D1/04Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • F27D1/045Bricks for lining cylindrical bodies, e.g. skids, tubes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

The invention discloses a composite heat insulation type furnace face prefabricated block for an aluminum anode carbon roasting furnace flue wall. The composite heat insulation type furnace face prefabricated block comprises a prefabricated material pouring body which is of a cuboid structure and is provided with a fire jet opening in the middle, bearing nets and heat insulation layers, wherein the bearing nets and the heat insulation layers are sequentially and horizontally embedded into the portions, located on the two sides of the fire jet opening, of the upper portion of the prefabricated material pouring body from top to bottom. L-shaped reinforcing frames are pressed on the edge of the periphery of the upper surface of the prefabricated material pouring body in a buckled manner. The composite heat insulation type furnace face prefabricated block is a composite body composed of refractory castable, the L-shaped reinforcing frames, the bearing nets, the heat insulation layers and other materials, and the requirements for fire resistance, collision prevention, heat insulation performance, load-bearing performance and anti-skidding performance of the furnace face prefabricated block for the flue wall are met; and the refractory castable sintered bauxite with the high strength and high performance is adopted as a host material for the furnace face prefabricated block, so that the finished prefabricated block has high strength, micropores and the medium or high specific gravity and is high in performance. A manufacturing method of the composite heat insulation type furnace face prefabricated block is simple, the process parameters are easy to control, and high-temperature sintering is not needed; and the pouring material formula is changed for different portions, and the field actual requirements of different portions of the prefabricated block are met.

Description

Aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section and preparation method thereof
Technical field
The present invention relates to aluminium anode carbon baking furnace flue wall, especially relate to a kind of aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section, the invention still further relates to the preparation method of this boiler face prefabricated section.
Background technology
China's aluminium anode carbon baking furnace technology is applied so far from the fifties in last century, though there being the biggest innovation, also achieving huge progress, but the material used by the core position flue wall of carbon baking furnace never changes decades.Flue wall is the important critical structures of annular roaster, and the integrated poured boiler face prefabricated section on flue wall body of heater surface, because being in the position of frequent operation, is highly prone to mechanical bumps and damages;Meanwhile, under hot operation state, this boiler face prefabricated section still suffers from certain vibrations pressure, particularly operator needs foot to step down in operation above, thus its surface temperature need to control below 45 DEG C the most suitable.For a long time, higher casting material prefabricated of the commonly used thermal conductivity of China's roasting furnace surface, the surface temperature making prefabricated section is many more than 60 DEG C, and furnace life middle and late stage is even up to more than 90 DEG C, working environment can not get improving, and causes operator to be encroached on by high temperature for a long time.There are designing unit and refractory material producer to attempt doing thermal insulation layer at boiler face prefabricated section upper surface superposition lightening casting material though domestic, but limited by material property, the most do not resolve the contradiction between pressure-bearing, impact resistant and heat-proof quality;Simultaneously because of the privileged site residing for boiler face prefabricated section, it is necessary to require safe anti-slipping.Therefore, being badly in need of developing one should have safety, load-bearing and impact resistant intensity, can have again the boiler face prefabricated section of good heat-proof quality, to reduce the surface temperature of boiler face prefabricated section, improve the work situation of workman.
Summary of the invention
The purpose of the present invention is that the defect existed for above-mentioned prior art provides a kind of aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section, and the present invention also provides for the preparation method of this boiler face prefabricated section.
For achieving the above object, the present invention can take following technical proposals:
Aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section of the present invention, have the prefabricated material pour mass of the rectangular structure of bocca in the middle part of including, be positioned at that the described prefabricated material pour mass top of bocca both sides is the most horizontally embedded bearing net and thermal insulation layer;L-shaped reinforcing frame has been withheld in the upper surface surrounding edge of described prefabricated material pour mass.
Described thermal insulation layer is made up of the metal cylinder mould of rectangular configuration and its interior refractory fibre of filling.
Described bearing net is welded by the longitudinal and transverse arrangement of reinforcing bar of diameter 5.5 ~ 8mm.
Prefabricated material pour mass of the present invention is by major ingredient bauxite and adjuvant silicon powder, Al2O3Micropowder, modified aluminium micropowder, water reducer, three stone mixed powders, bonding agent, alumina hollow ball, water are poured into a mould after mixing by following weight and are formed:
Bauxite 47 ~ 87 parts, wherein: 20 ~ 30 parts of the aggregate of particle diameter 8 ~ 10mm, 10 ~ 18 parts of the aggregate of particle diameter 3 ~ 5mm, 5 ~ 18 parts of the aggregate of 1mm≤particle diameter < 3mm, the powder of particle diameter≤0.074mm 12 ~ 21 parts;
The silicon powder of particle diameter≤10 μm m 0.5 ~ 4.2 part;
The Al of particle diameter≤5 μm m2O3Micropowder 0.2 ~ 4.5 part;
The modified aluminium micropowder of particle diameter≤5 μm m 0 ~ 6.2 part;
Water reducer 0.1 ~ 1.0 part;
The three stone mixed powder 0.4 ~ 4.8 part of particle diameter≤0.09mm;
Bonding agent 1.8 ~ 9.8 parts;
The alumina hollow ball of particle diameter 1.2 ~ 1.8mm 0.1 ~ 5.5 part;
2.0 ~ 7.2 parts of water.
In the prefabricated material pour mass of bocca position is raw materials used, bonding agent can use the alundum cement of 1.8 ~ 6.8 parts, and the prefabricated material pour mass after molding has that loading temperature is high, fire resistance is good, the characteristic of resistance to erosion.
During the prefabricated material pour mass at other positions is raw materials used, bonding agent can be adopted as the alumina cement of 2.2 ~ 9.8 parts, and the prefabricated material pour mass after molding has that bulk density is moderate, intensity is higher, impact resistant, anti-skidding characteristic.
The preparation method of aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section of the present invention is as follows:
The first step, the in proportion aggregate used by precise prefabricated material pour mass and powder, wherein the particle diameter of aggregate mixes level rate < 2.0%, particle diameter deviation < 1.0mm;Powder screen surplus < 3% of bauxite;
Second step, makes bearing net, thermal insulation layer and L-shaped reinforcing frame, and is assembled integrally, and wherein the refractory fibre used by thermal insulation layer uses temperature 600 ~ 1000 DEG C, thermal conductivity < 0.1 ~ 2.0 kilocalorie/hour. degree;
3rd step, makes bocca mandrel;
4th step, the bearing net being assembled integrally by second step on base plate, thermal insulation layer and L-shaped reinforcing frame put well, and surrounding places template, and bocca mandrel is placed in center, forms casting mold;
5th step, after the castable that the first step weighs being puddled uniformly, is cast in the mould that the 4th step is made, and vibrates 5 ~ 7 minutes, add a cover cotton-wadded quilt maintenance to surface solidification;
5th step, according to template, mandrel, the order demoulding successively of base plate, and natural curing 3 ~ 24 hours under the conditions of ambient temperature >=18 DEG C, relative humidity >=85%, obtains finished product prefabricated section.
It is an advantage of the current invention that the complex being made up of multiple materials such as castable refractory, metal L-shaped reinforcing frame, bearing net, refractory fibre thermal insulation layers, meet fire-resistant, the anticollision required for aluminium anode carbon baking furnace flue wall boiler face prefabricated section, heat insulation, load-bearing, anti-skidding performance.The present invention uses and buries high-performance insulation material in the prefabricated material pour mass of bocca both sides underground, arranges bearing net on heat-barrier material, reduces the surface temperature of boiler face prefabricated section on the basis of meeting load-bearing requirements;Do anticollision with the L-shaped reinforcing frame of metal material and strengthen result, extend the service life of prefabricated section.Prefabricated section overall structure of the present invention is simple, bearing safety, and impact resistant intensity is high and has good heat-proof quality, greatly reduces the surface temperature (less than 45 DEG C) of prefabricated section, improves the working environment of workman, extend the service life of prefabricated section.Preparation method the most of the present invention is simple, and technological parameter is easily-controllable, it is not necessary to high temperature sintering;For different parts, casting material formula is changed, and meets the on-the-spot actual demand of prefabricated section different parts.
The present invention uses high-strength high-performance castable refractory sintered bauxite as the material of main part of boiler face prefabricated section so that finished product prefabricated section have high intensity, micropore, in hyperbaric high-performance;By silicon powder, Al2O3Micropowder, modified aluminium micropowder with the use of, both improved the mobility of castable, substantially increase again prefabricated section room temperature and burn after intensity, effect is the most notable;Use water reducer to reduce the amount of water of castable, improve degree of compaction and the intensity of prefabricated section;Alumina hollow ball is used to reduce the thermal conductivity of prefabricated section further;Alundum cement or alumina cement are as cementing agent;The expansion rate of prefabricated section is adjusted with three stone mixed powders;Mutually coordinated, interaction between each raw material, and cooperate with metal L-shaped reinforcing frame, bearing net, refractory fibre thermal insulation layer, well solve the contradiction between prefabricated section pressure-bearing, impact resistant and heat-proof quality, meet the use requirement of aluminium anode carbon baking furnace flue wall.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is that the B-B of Fig. 1 is to sectional view.
Fig. 3 is the arrangement figure of L-shaped reinforcing frame, bearing net and thermal insulation layer in Fig. 1.
Detailed description of the invention
As Figure 1-3, aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section of the present invention, have the prefabricated material pour mass 2 of the rectangular structure (concrete size according to user require depending on) of bocca 1 in the middle part of including, be positioned at that the prefabricated material pour mass top (distance upper surface about about 20cm) of bocca both sides is the most horizontally embedded bearing net 3 and thermal insulation layer 4;L-shaped reinforcing frame 5 has been withheld in the upper surface surrounding edge of prefabricated material pour mass.
Thermal insulation layer 4 by rectangular configuration (actual fabrication size according to user require depending on, erect-position when meeting operative requires) metal cylinder mould and fill its interior refractory fibre composition, refractory fibre can use the resistance to Pyroxylin that heat-proof quality is excellent, fire-resistant blanket or refractory slab.
Bearing net 3 is welded by the longitudinal and transverse arrangement of reinforcing bar of diameter 5.5 ~ 8mm.
For ensureing intensity and the fire resistance of prefabricated section, the prefabricated material pour mass 2 of the present invention is by major ingredient bauxite and adjuvant silicon powder, Al2O3Micropowder, modified aluminium micropowder, water reducer, three stone mixed powders, bonding agent, alumina hollow ball, water are poured into a mould after mixing by following weight and are formed:
Bauxite 47 ~ 87 parts, wherein: 20 ~ 30 parts of the aggregate of particle diameter 8 ~ 10mm, 10 ~ 18 parts of the aggregate of particle diameter 3 ~ 5mm, 5 ~ 18 parts of the aggregate of 1mm≤particle diameter < 3mm, the powder of particle diameter≤0.074mm 12 ~ 21 parts;
The silicon powder of particle diameter≤10 μm m 0.5 ~ 4.2 part;
The Al of particle diameter≤5 μm m2O3Micropowder 0.2 ~ 4.5 part;
The modified aluminium micropowder of particle diameter≤5 μm m 0 ~ 6.2 part;
Water reducer 0.1 ~ 1.0 part;
The three stone mixed powder 0.4 ~ 4.8 part of particle diameter≤0.09mm;
Bonding agent 1.8 ~ 9.8 parts;
The alumina hollow ball of particle diameter 1.2 ~ 1.8mm 0.1 ~ 5.5 part;
2.0 ~ 7.2 parts of water.
For the different operating situation near bocca position and other position prefabricated sections, its castable is divided into A(near bocca position), other positions of B() two kinds of different formula: near the prefabricated material pour mass of bocca position, loading temperature is high, fire resistance is good, the characteristic of resistance to erosion to require the prefabricated material pour mass after molding to have;The prefabricated material pour mass at remaining position, it is desirable to the prefabricated material pour mass after type has that bulk density is moderate, intensity is higher, impact resistant, anti-skidding characteristic.
The weight of concrete A formula and two kinds of castables of B formula see table 1:
Table 1
Note: the modified aluminium micropowder used by the present invention is commercially available bimodal aluminum micropowder;Three used conjunction mixed powders are the most formulated by sillimanite, andalusite, kyanite, wherein the proportioning between three can require to carry out allocating according to user (expansion rate set according to the ambient temperature of the actually used occasion of user, adjust its ratio be allowed to meet require).
Simultaneously as the use environment of each user is different, the performance requirement of prefabricated section being had different, casting material formula can be adjusted on the basis of table 1.
The preparation method of the aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section of the present invention is as follows:
The first step, in proportion A formula used by precise prefabricated material pour mass and two kinds of aggregates of B formula and powder, wherein the particle diameter of aggregate mixes level rate < 2.0%, particle diameter deviation < 1.0mm;Powder screen surplus < 3% of bauxite, amount of water deviation < 0.1%;
Second step, making bearing net, thermal insulation layer and L-shaped reinforcing frame, and be assembled integrally, wherein the refractory fibre used by thermal insulation layer uses temperature 600 ~ 1000 DEG C, thermal conductivity < 0.1 ~ 2.0 kilocalorie/hour. degree, can be selected for the excellent resistance to Pyroxylin of thermal insulation, fire-resistant blanket, refractory slab etc.;Bearing net uses the common heat resisting steel of diameter 5.5 ~ 8mm or the longitudinal and transverse arrangement of dish round steel for building to be welded;L-shaped reinforcing frame uses common angle steel or heat-resisting angle steel (30*50 or 50*50);
3rd step, makes bocca mandrel;
4th step, the bearing net being assembled integrally by second step on base plate, thermal insulation layer and L-shaped reinforcing frame put well, and surrounding places template, and bocca mandrel is placed in center, forms casting mold, the length dimensional discrepancy < 0.5mm of mould;
5th step, A formula and two kinds of castables of B formula of the first step being weighed puddle uniformly (using two blenders to feed to puddle) respectively simultaneously, it is cast in the mould that the 4th step makes that (A formula is poured into a mould near bocca simultaneously, B formula cast cladding bearing net and remaining position of thermal insulation layer), and sustained vibration 5 ~ 7 minutes, add a cover cotton-wadded quilt maintenance and draw motionless to surface solidification, casting area;
5th step, according to template, mandrel, the order demoulding successively of base plate, and natural curing 3 ~ 24 hours (the concrete time can be adjusted according to Various Seasonal) under conditions of ambient temperature >=18 DEG C, relative humidity >=85%, obtain finished product prefabricated section, dimensional discrepancy-3.0 ~+2.0mm of finished product prefabricated section.
After tested, the physical and chemical index of finished product prefabricated section such as table 2 below:
Table 2

Claims (8)

1. an aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section, the prefabricated material pour mass (2) of the rectangular structure of bocca (1) is had in the middle part of including, it is characterised in that: it is positioned at that the described prefabricated material pour mass top of bocca both sides is the most horizontally embedded bearing net (3) and thermal insulation layer (4);L-shaped reinforcing frame (5) has been withheld in the upper surface surrounding edge of described prefabricated material pour mass.
Aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section the most according to claim 1, it is characterised in that: described thermal insulation layer (4) is made up of the metal cylinder mould of rectangular configuration and its interior refractory fibre of filling.
Aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section the most according to claim 1, it is characterised in that: described bearing net (3) is welded by the longitudinal and transverse arrangement of reinforcing bar of diameter 5.5 ~ 8mm.
4. according to the compound heat-insulation type boiler face prefabricated section of the aluminium anode carbon baking furnace flue wall described in claim 1,2 or 3, it is characterised in that: described prefabricated material pour mass (2) is by major ingredient bauxite and adjuvant silicon powder, Al2O3Micropowder, modified aluminium micropowder, water reducer, three stone mixed powders, bonding agent, alumina hollow ball, water are poured into a mould after mixing by following weight and are formed:
Bauxite 47 ~ 87 parts, wherein: 20 ~ 30 parts of the aggregate of particle diameter 8 ~ 10mm, 10 ~ 18 parts of the aggregate of particle diameter 3 ~ 5mm, 5 ~ 18 parts of the aggregate of 1mm≤particle diameter < 3mm, the powder of particle diameter≤0.074mm 12 ~ 21 parts;
The silicon powder of particle diameter≤10 μm m 0.5 ~ 4.2 part;
The Al of particle diameter≤5 μm m2O3Micropowder 0.2 ~ 4.5 part;
The modified aluminium micropowder of particle diameter≤5 μm m 0 ~ 6.2 part;
Water reducer 0.1 ~ 1.0 part;
The three stone mixed powder 0.4 ~ 4.8 part of particle diameter≤0.09mm;
Bonding agent 1.8 ~ 9.8 parts;
The alumina hollow ball of particle diameter 1.2 ~ 1.8mm 0.1 ~ 5.5 part;
2.0 ~ 7.2 parts of water.
Aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section the most according to claim 4, it is characterised in that: described bonding agent is the alumina cement of 2.2 ~ 9.8 parts.
Aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section the most according to claim 4, it is characterised in that: described bonding agent is the alundum cement of 1.8 ~ 6.8 parts.
7. described in claim 4, the preparation method of aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section is as follows:
The first step, the in proportion aggregate used by precise prefabricated material pour mass and powder, wherein the particle diameter of aggregate mixes level rate < 2.0%, particle diameter deviation < 1.0mm;Powder screen surplus < 3% of bauxite;
Second step, makes bearing net, thermal insulation layer and L-shaped reinforcing frame, and is assembled integrally, and wherein the refractory fibre used by thermal insulation layer uses temperature 600 ~ 1000 DEG C, thermal conductivity < 0.1 ~ 2.0 kilocalorie/hour. degree;
3rd step, makes bocca mandrel;
4th step, the bearing net being assembled integrally by second step on base plate, thermal insulation layer and L-shaped reinforcing frame put well, and surrounding places template, and bocca mandrel is placed in center, forms casting mold;
5th step, after the castable that the first step weighs being puddled uniformly, is cast in the mould that the 4th step is made, and vibrates 5 ~ 7 minutes, add a cover cotton-wadded quilt maintenance to surface solidification;
5th step, according to template, mandrel, the order demoulding successively of base plate, and natural curing 3 ~ 24 hours under the conditions of ambient temperature >=18 DEG C, relative humidity >=85%, obtains finished product prefabricated section.
The preparation method of aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section the most according to claim 7, it is characterised in that: in the prefabricated material pour mass of bocca position is raw materials used, bonding agent uses alundum cement;During the prefabricated material pour mass at other positions is raw materials used, bonding agent uses alumina cement.
CN201610397320.4A 2016-06-07 2016-06-07 Aluminium anode carbon baking furnace flue wall compound heat-insulation type boiler face prefabricated section Active CN105910441B (en)

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CN112344746A (en) * 2020-11-23 2021-02-09 北京联合荣大工程材料股份有限公司 Sandwich type coke oven door prefabricated part and preparation method thereof

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CN101936530A (en) * 2010-09-29 2011-01-05 中国石油化工股份有限公司 Multi-point combustion long-flame gas burner with ultralow nitrogen oxide (NOx) emission
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112344746A (en) * 2020-11-23 2021-02-09 北京联合荣大工程材料股份有限公司 Sandwich type coke oven door prefabricated part and preparation method thereof

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