CN100460352C - Light thermal-insulating acid-resistant concrete block for flue and method for producing same - Google Patents
Light thermal-insulating acid-resistant concrete block for flue and method for producing same Download PDFInfo
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- CN100460352C CN100460352C CNB2006100763978A CN200610076397A CN100460352C CN 100460352 C CN100460352 C CN 100460352C CN B2006100763978 A CNB2006100763978 A CN B2006100763978A CN 200610076397 A CN200610076397 A CN 200610076397A CN 100460352 C CN100460352 C CN 100460352C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a mechanism chimney lightweight heat insulation acidproof concrete block and producing method, which comprises the following steps: 1, using coarse aggregate of 3-8mm grain size, fine aggregate of 0.2-3mm grain size and powder of lower 0.16mm grain size to burden according to the volume of 26-30 coarse aggregate, 37-41 fine aggregate, 31-35 powder; 2, placing the prepared coarse aggregate, fine aggregate and powder in mix-material equipment; adding in curative according to proportion and mixing; filling in admixture and addition agent to mix positively for half dry mixing material; 3, putting half dry mixing material in mold; demoulding for half-finished product after the press machine pressurizes at demand compression ratio; 4, putting the half-finished product on bed plate to cure for eight hours, 110deg.c or higher than 15deg.c and seven days. The invention has short curing time, which saves the mold and field.
Description
Technical field
The present invention relates to a kind of building block, particularly a kind ofly build the light thermal-insulating acid-resistant concrete block for flue that the fuel-burning power plant chimney lining is used by laying bricks or stones.
Background technology
Main structure-the chimney in Chinese large-sized fuel-burning power plant: the construction method that is the former Soviet Union of continuity.Chimney shaft is made of reinforced concrete.The inner lining building block.Add thermofin between stack shell and air retaining wall.Because what the continuous expansion of generating set and environmental protection standard required improves constantly.Also thereupon constantly to high, great development, the 80m from the past progressively develops into present 120m, 210m, 240m and 270m to chimney.And the trend of further increasing is arranged, increasing.On the other hand, for cleaning apparatus, also progressively change electric precipitation into from the water dedusting, so flue-gas temperature has also had raising, the environment protection treating of wet desulphurization requires the acid resistance to chimney lining, anti-impregnability to propose the requirement of upgrading.
Therefore no matter be from the primary structure design.Still on inner lining material and building structure, can't satisfy the working condition of chimney operation.So see chimney ubiquity cracking and etching problem by having sent out from a large amount of investigation of the eighties since the middle and later periods, the chimney time that has is not grown and just is forced to abolish.So not only cause the tremendous economic loss, and directly injured the safe operation of power plant.Thereby caused all circles' great attention, chimney is treating to rise to as equipment as structures and treat from the past also.
It is many-sided causing chimney cracking and reason for corrosion, but one of them very important reasons be exactly material capability and build by laying bricks or stones (liner) structure, that is to say that inner lining material (building block) should possess good anti-sulfuric acid (sulphur in the flue gas can be produced acid gas) corrosion and insulative properties.The corrosion failure that causes with the cracking destruction that prevents to cause with because of acid gas because of thermal stress.Guarantee that from building structure perps is full simultaneously, closure is good, prevents that flue gas is to thermofin and wall of the outer-rotor infiltration.
The refractory block of similarly making through the stove roast is arranged in the prior art.As refractory block of CN1061208 red silica serial and production method thereof, providing a kind of is base-material with red building block stone, adds water glass, aluminum phosphate, Sodium Silicofluoride, glass powder with thick, fine particle, the pug that talcum powder etc. are formed.Go into mold forming after the refractory block that stove roast system forms.Its shortcoming is that matter weighs, need fire.Then there is aforesaid defective in this building block as not firing, and can not use.
Notification number the contriver is in the patent of invention of CN 1049414C, a kind of chimney light block made from method of injection molding is provided, and is by tackiness agent water glass, and coarse aggregate, fine aggregate and solidifying agent Sodium Silicofluoride are formed, it is characterized in that also comprising powder, wherein coarse aggregate is a haydite; Fine aggregate is a pottery sand; Powder is a flyash; By volume per-cent is composed as follows: 5-15mm particle diameter coarse aggregate accounts for 65.5; 0.4-5mm particle diameter fine aggregate accounts for 17.25; 0.1mm following powder accounts for 17.25; In per 1 cubic metre of batching, add water glass 250-450kg in addition, Sodium Silicofluoride 25-70kg.Its Production Flow Chart is as shown in Figure 1:
Coarse aggregate, fine aggregate, powder are stirred by above-mentioned per-cent batching, adding solidifying agent Sodium Silicofluoride dry blending, add tackiness agent water glass again and force to stir into plastic pug, pouring the mould vibrating forming into is the disjunctor building block, through the dry curing first time, temperature is 30 ℃, continues 4 hours, and the demoulding after the dry curing for the first time is again through the dry curing second time, temperature is 30 ℃, continues 7 days, last cutting forming.
The chimney of this invention has lightweight, high-strength, heat-resisting, heat insulation, acid-resistant anti-corrosion, advantage that shock resistance is good with light block, but adopt the mould vibrating forming, and need account for the mould dry curing for a long time, therefore the work-yard that needs a large amount of moulds and placement mould, the excision forming difficulty is big, complex process, production efficiency is low, can not meet the need of market.On the other hand, owing to adopt mould to annotate the vibrating forming manufactured, whole block surfaces is consistent with the center material, can't produce the building block that internal surface has the waterproof pervious course.
Summary of the invention
Technical problem to be solved by this invention is at the above-mentioned deficiency of prior art, and to provide light thermal-insulating acid-resistant concrete block for flue and the production method thereof that a kind of curing time is short, technology is simple, productivity is high.
Light thermal-insulating acid-resistant concrete block for flue provided by the present invention has following technical scheme to realize.
A kind of light thermal-insulating acid-resistant concrete block for flue is by tackiness agent, and coarse aggregate, fine aggregate, powder, solidifying agent and additive are formed, and it is characterized in that:
The particle diameter of described coarse aggregate is that the particle diameter of 3-8mm, fine aggregate is that the particle diameter of 0.2-3mm, powder is less than 0.16mm;
The volume percent of described coarse aggregate, fine aggregate, powder is composed as follows:
Coarse aggregate 26-30%;
Fine aggregate 37-41%;
Powder 31-35%;
In per 1 cubic metre of batching, add tackiness agent 320-400kg in addition, solidifying agent 40-45kg, additive 10-15kg.
Described light thermal-insulating acid-resistant concrete block for flue is characterized in that: the volume percent composition of described coarse aggregate, fine aggregate, powder is preferably as follows:
Coarse aggregate 28%;
Fine aggregate 39%;
Powder 33%.
Described light thermal-insulating acid-resistant concrete block for flue is characterized in that: described coarse aggregate is haydite or float stone; Described fine aggregate is pottery sand or floats pearl or heavy pearl or perlite or grog refractory; Described powder is glass-cermic powder or floating bead powder or heavy pearl powder or perlite powder or flyash or diabase flour or grog refractory powder.
Described light thermal-insulating acid-resistant concrete block for flue is characterized in that: described tackiness agent is water glass or silicon sol; Described solidifying agent is a Sodium Silicofluoride; Described additive is furfuryl alcohol or furfural.
Described light thermal-insulating acid-resistant concrete block for flue is characterized in that: the bricklaying surface in building block simultaneously is provided with tenon, and the symmetry one side is provided with tongue-and-groove.
Described light thermal-insulating acid-resistant concrete block for flue is characterized in that: simultaneously be provided with tenon and tongue-and-groove in the concrete block masonry face, also be provided with corresponding tongue-and-groove and tenon simultaneously in symmetric another side.
The present invention also provides a kind of manufacture method of above-mentioned light thermal-insulating acid-resistant concrete block for flue.
A kind of manufacture method of light thermal-insulating acid-resistant concrete block for flue, its step is as follows:
The step 1 batching
With coarse aggregate, fine aggregate, powder volume ratio batching in accordance with regulations;
Step 2 is produced half-dried compound
The coarse aggregate, fine aggregate, the powder that prepare are placed blender, add the solidifying agent dry blending in proportion and stir, add tackiness agent and additive again and force to stir into half-dried compound;
Step 3 is molded into work in-process
Half-dried compound is distributed into mould, and after the pressing machine pressurization reached desired compression ratio, the demoulding became work in-process;
Work in-process are put on the supporting plate, carry out maintenance, 110 ℃ 8 hours,
A kind of manufacture method of light thermal-insulating acid-resistant concrete block for flue, its step is as follows:
The step 1 batching
With coarse aggregate, fine aggregate, powder in accordance with regulations than the batching weighing;
Step 2 is produced half-dried compound
The coarse aggregate, fine aggregate, the powder that prepare are placed blender, add the solidifying agent dry blending in proportion and stir, add tackiness agent and additive again and force to stir into half-dried compound;
Step 3 is molded into work in-process
Half-dried mixed brick building block pug is distributed into mould, reaches desired compression ratio in vibrations pressing machine vibrations pressurization, the demoulding becomes work in-process;
Work in-process are put on the supporting plate, carry out maintenance, 110 ℃ 8 hours,
The manufacture method of described light thermal-insulating acid-resistant concrete block for flue is characterized in that: described pressing machine is a pressure greater than 200 tons hydropress.
The manufacture method of described light thermal-insulating acid-resistant concrete block for flue is characterized in that: described vibrations pressing machine is a pressure greater than 200 tons vibrations hydropress.
The invention has the advantages that:
Curing time weak point, saving mould and place, the productivity height can be made the concrete building block that the part has the waterproof pervious course, and the present invention also can be by regulating the building block that compression ratio and raw-material method obtain different specific weight and intensity.
For constitutional features of the present invention and effect thereof are had further understanding, enumerate specific embodiment now and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is the production scheme of existing chimney light heat-insulating acid-resisting concrete building block.
Fig. 2 is the production scheme of chimney light heat-insulating acid-resisting concrete of the present invention building block.
Fig. 3-the 7th, the profile stereographic map of chimney light heat-insulating acid-resisting concrete of the present invention building block.
Embodiment
The present invention provides a kind of light thermal-insulating acid-resistant concrete block for flue, and it all is by tackiness agent on composition that this building block and existing mould are annotated the building block of chimney light heat-insulating acid-resisting concrete, and coarse aggregate, fine aggregate, powder, solidifying agent and additive are formed.But because the used mixing pug of mould notes method is rarer, have certain fluidity, and the used mixing pug of compression molding mechanism building block requires to be leather hard.The acquisition of two kinds of different states can not realize by the amount of regulating the tackiness agent that is added, and can only realize by the grain diameter that changes in the compound, to obtain half-dried mixing pug specifically, need to adopt the little particle of particle diameter to realize, under equal volume, the particle footpath is more little, amounts of particles is then many more, the particle total surface area is also big more, by increasing the mixing pug that way that the particle total surface area makes the more tackiness agent of absorption obtains leather hard, so the ratio of coarse aggregate, fine aggregate needs change.
On the other hand, because the used mixing pug of mould notes method is rarer, mutual transposition can take place in the particle that varies in size in the process of vibrating forming, and the macrobead on surface can be shifted to inside, make the surface be the enrichment of fine particle institute, so the final finished smooth surface is smooth; And half-dried compound is in mold process, and mutual transposition can not take place the particle that varies in size, and the macrobead on surface is still on the surface, so the final finished surface irregularity is rough, drops in case be positioned at the macrobead on surface, then on the surface] will occur empty.Therefore the particle diameter of used coarse aggregate need reduce.
The particle diameter of coarse aggregate of the present invention is 3-8mm, and the particle diameter of fine aggregate is 0.2-3mm, and the particle diameter of powder is less than 0.16mm;
The volume percent of described coarse aggregate, fine aggregate, powder is composed as follows:
Coarse aggregate 26-30%;
Fine aggregate 37-41%;
Powder 31-35%;
In per 1 cubic metre of batching, add tackiness agent 320-400kg in addition, solidifying agent 40-45kg, additive 10-15kg.
The volume percent of above-mentioned coarse aggregate, fine aggregate, powder is preferably composed as follows:
Coarse aggregate 28%;
Fine aggregate 39%;
Powder 33%.
Described coarse aggregate is haydite or float stone; Described fine aggregate is pottery sand or floats pearl or heavy pearl or perlite or grog refractory; Described powder is glass-cermic powder or floating bead powder or heavy pearl powder or perlite powder or flyash or diabase flour or grog refractory powder.The proportion difference of above-mentioned differing materials can suitably be selected for use according to the weight of required building block.
The density of coarse aggregate (haydite or float stone): 4100-800kg/m
3, cylindrical compress strength: 1-5Mpa.
Described tackiness agent is water glass or silicon sol; Described solidifying agent is a Sodium Silicofluoride; Described additive is furfuryl alcohol or furfural.The alkalimetal silicate water glass of used water glass, modulus is: 2.6-3.2, proportion is: 1.16-1.47; The purity of Sodium Silicofluoride 〉=95%, water ratio≤1%.
The present invention's mechanism light heat-insulation acid-proof building block proportioning is as follows:
| Coarse-fine aggregate cumulative volume (m 3/m 3) | Volume sand coarse aggregate ratio (%) | Water glass consumption (kg) | Sodium Silicofluoride consumption (kg) |
| 1.7-2.0 | 20-45 | 320-400 | 40-45 |
Machine-processed light heat-insulation acid-proof building block of the present invention is shaped as the two sides or four sides (bricklaying surface) has the square of the tenon that is meshing with each other, groove, trapezoidal and fan-shaped+cut surface is smooth microporous cellular, and working face is closely knit, smooth smooth.Have lightweight, high-strength, heat-resisting, heat insulation, acid-resistant anti-corrosion, shock resistance is good and guarantees that the masonry globality is strong, the characteristics of stopping property, can be used for various chimney lining materials.
Fig. 3-the 7th, the profile stereographic map of chimney light heat-insulating acid-resisting concrete of the present invention building block.Bricklaying surface in building block 1 simultaneously is provided with tenon 4 as seen from the figure, and another plane of symmetry is provided with tongue-and-groove 5.Or simultaneously be provided with tenon 4 and tongue-and-groove 5 in building block 1 bricklaying surface, also be provided with corresponding tongue-and-groove 5 and tenon 4 simultaneously in symmetric another side.Tenon 4 and tongue-and-groove 5 interlock mutually when building by laying bricks or stones, convenient construction improves construction quality.
The present invention produces the existing problems of chimney building block for solving existing injection molding vibrating forming method, the work-yard that particularly accounts for the long a large amount of moulds of needs that brought of mould dry curing time and place mould, the excision forming difficulty is big, complex process, production efficiency is low, the problem that can not meet the need of market.And change the injection molding vibrating forming into compression molding.
Shown in Figure 2 is the schema of the manufacture method of light thermal-insulating acid-resistant concrete block for flue of the present invention, and its step is as follows:
The step 1 batching
With coarse aggregate, fine aggregate, powder volume ratio batching in accordance with regulations;
Step 2 is produced half-dried compound
The coarse aggregate, fine aggregate, the powder that prepare are placed blender, add the solidifying agent dry blending in proportion and stir, add tackiness agent and additive again and force to stir into half-dried compound;
Step 3 is molded into work in-process
Half-dried compound is distributed into mould, and after the pressing machine pressurization reached desired compression ratio, the demoulding became work in-process;
Work in-process are put on the supporting plate, carry out maintenance, 110 ℃ 8 hours,
Wherein, described pressing machine is a pressure greater than 200 tons hydropress.
The step 3 of aforesaid method is molded in the work in-process, half-dried compound is distributed into mould after, after also available vibrations pressing machine vibrations pressurization reaches desired compression ratio.Wherein, described vibrations pressing machine is a pressure greater than 200 tons vibrations hydropress.
Block strength height of the present invention, is unit weight little? thermal and insulating performance is good, acid corrosion-resistant, and shock resistance is strong, and rational in infrastructure, raw material is easy to get, builds by laying bricks or stones easy to use, and speed of application is fast, and overall cost is low.Every performance index see the following form.
| Project | Measure unit | Technical indicator |
| Volume density | Kg/m 3 | 900-1600 |
| Ultimate compression strength | Mpa | 10-14 |
| Thermal conductivity | W/m.k | 0.30-0.70 |
| Water-intake rate | ％ | Less than 5 |
| Acid resistance 40% sulfuric acid | Soaking 30 days intensity does not reduce | |
| 250 ℃ of thermotolerances, 4 hours | Flawless, peel off and big and 2.0% velocity of variation | |
| Water tolerance normal temperature immersion 30 days | Outward appearance does not have unusual phenomenon fsh/fs 〉=0.8 such as corrosion, expansion |
Ultimate compression strength after the water inlet of Fsh test specimen.
Ultimate compression strength after 110 ℃ of oven dry of Fs test specimen.
Building block manufacture method of the present invention owing to adopt the mold pressing manufacturing, can be adjusted the local material of block surfaces, makes to obtain having special surface properties, as at internal surface partial accession water-proof material, is pressed into the building block that internal surface has the waterproof pervious course.
Claims (8)
1. a light thermal-insulating acid-resistant concrete block for flue is by tackiness agent, and coarse aggregate, fine aggregate, powder, solidifying agent and additive are formed, and it is characterized in that:
Described coarse aggregate is haydite or float stone, the particle diameter of this coarse aggregate is that 3-8mm, fine aggregate are Tao Sha or float pearl or heavy pearl or perlite or grog refractory, the particle diameter of this fine aggregate is that 0.2-3mm, powder are glass-cermic powders or float pearl part or heavy pearl powder or perlite powder or flyash or diabase flour or grog refractory powder, and the particle diameter of this powder is less than 0.16mm;
The volume percent of described coarse aggregate, fine aggregate, powder is composed as follows:
Coarse aggregate 26-30%;
Fine aggregate 37-41%;
Powder 31-35%;
In per 1 cubic metre of batching, add tackiness agent 320-400kg in addition, solidifying agent 40-45kg, additive 10-15kg,
Described tackiness agent is water glass or silicon sol; Described solidifying agent is a Sodium Silicofluoride; Described additive is furfuryl alcohol or furfural.
2. light thermal-insulating acid-resistant concrete block for flue according to claim 1 is characterized in that: the volume percent composition of described coarse aggregate, fine aggregate, powder is preferably as follows:
Coarse aggregate 28%;
Fine aggregate 39%;
Powder 33%.
3. light thermal-insulating acid-resistant concrete block for flue according to claim 1 and 2 is characterized in that: the bricklaying surface in building block simultaneously is provided with tenon, and the symmetry one side is provided with tongue-and-groove.
4. light thermal-insulating acid-resistant concrete block for flue according to claim 1 and 2 is characterized in that: simultaneously be provided with tenon and tongue-and-groove in the concrete block masonry face, also be provided with corresponding tongue-and-groove and tenon simultaneously in symmetric another side.
5. the manufacture method of a kind of light thermal-insulating acid-resistant concrete block for flue according to claim 1, its step is as follows:
The step 1 batching
With coarse aggregate, fine aggregate, powder volume ratio batching in accordance with regulations;
Step 2 is produced half-dried compound
The coarse aggregate, fine aggregate, the powder that prepare are placed blender, add the solidifying agent dry blending in proportion and stir, add tackiness agent and additive again and force to stir into half-dried compound;
Step 3 is molded into work in-process
Half-dried compound is distributed into mould, and after the pressing machine pressurization reached desired compression ratio, the demoulding became work in-process;
Step 4 maintenance finished product
Work in-process are put on the supporting plate, carry out maintenance, 110 ℃ 8 hours.
6. the manufacture method of light thermal-insulating acid-resistant concrete block for flue according to claim 5, it is characterized in that: be molded in the work in-process in step 3, described pressing machine is the vibrations pressing machinees, and after vibrations pressing machine vibrations pressurization reached desired compression ratio, the demoulding became work in-process.
7. the manufacture method of light thermal-insulating acid-resistant concrete block for flue according to claim 5 is characterized in that: described pressing machine is a pressure greater than 200 tons hydropress.
8. the manufacture method of light thermal-insulating acid-resistant concrete block for flue according to claim 6 is characterized in that: described vibrations pressing machine is a pressure greater than 200 tons vibrations hydropress.
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| CNB2006100763978A CN100460352C (en) | 2006-04-24 | 2006-04-24 | Light thermal-insulating acid-resistant concrete block for flue and method for producing same |
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| CN100460352C true CN100460352C (en) | 2009-02-11 |
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| CN103244145B (en) * | 2013-05-29 | 2016-04-20 | 唐山开滦广汇设备制造有限公司 | Underground coal mine fire dam resistance to compression pressure release brick and building method thereof |
| CN107008224A (en) * | 2017-04-11 | 2017-08-04 | 明光市外泰高分子材料有限公司 | A kind of method for being acidified Concave-convex clay rod |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094701A (en) * | 1994-02-05 | 1994-11-09 | 郝天成 | Light heat-insulation acid-proof building block for chimney and production method thereof |
| CN1537821A (en) * | 2003-04-18 | 2004-10-20 | 张东辉 | Water-proof acid resistant heat resistant light heat insulating casting material and its manufacturing method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094701A (en) * | 1994-02-05 | 1994-11-09 | 郝天成 | Light heat-insulation acid-proof building block for chimney and production method thereof |
| CN1537821A (en) * | 2003-04-18 | 2004-10-20 | 张东辉 | Water-proof acid resistant heat resistant light heat insulating casting material and its manufacturing method |
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