CN104355595A - Coal gangue building block - Google Patents
Coal gangue building block Download PDFInfo
- Publication number
- CN104355595A CN104355595A CN201410540025.0A CN201410540025A CN104355595A CN 104355595 A CN104355595 A CN 104355595A CN 201410540025 A CN201410540025 A CN 201410540025A CN 104355595 A CN104355595 A CN 104355595A
- Authority
- CN
- China
- Prior art keywords
- coal gangue
- temperature
- kiln
- idiosome
- precompressed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a coal gangue building block. The coal gangue building block is characterized in that preparation steps are as follows: 1), blending of materials comprising components in percentage by weight as follows: 70%-72% of coal gangue, 12%-14% of carbide slag and 15%-17% of water; 2), smashing; 3), stirring; 4), ageing: well stirred mixed materials are put in a conical steel bin for digestion, and a vibrator is arranged on the wall of the bin; 5), wheel grinding; 6) pressing forming: the forming pressure is 2 MPa, and a two-time pressurizing manner is adopted; 7), standing; and 8), steam curing. The coal gangue building block is safe, reliable and high in practicability and has the effects of reducing environment pollution, saving land and saving energy.
Description
Technical field
The present invention relates to a kind of coal gangue building blocks, be applicable to Material Field.
Background technology
Coal gangue is a kind of solid waste of discharging in coal-mining industry production process.Not only take a large amount of soils, and serious environment pollution.The long-term air storage of coal gangue gives out a large amount of toxic and harmfuls, and air is polluted, and the hydrate in the SO2 gas wherein produced and air forms acid rain.Acid rain not only corroding metal structures also can destroy the growth of plant, and flow into river and destroy aqueous bio, permeate the ground polluted underground water source, the health of the harm people.If bastard coal building block made of stones can be utilized to be to make comprehensive utilization of resources, thus to realize the strategy of sustainable development.
Carbide slag is the throw out after calcium carbide hydrolysis, its main component is calcium oxide, carbide slag particle after precipitation is very trickle, the grain diameter of 80% is within the scope of 10 ~ 15mm, and screen over-size is 3% ~ 9%, and uniform particles, density is lighter, the carbide slag water content just having gone out carbide-feed generator is 90% ~ 95%, and after concentrated, carbide slag water content is 75% ~ 80%.Chemically composition is seen, it is feasible for substituting Wingdale as the raw material of production building block with carbide slag.
Summary of the invention
The present invention is to provide a kind of preparation method of coal gangue building blocks, solves existing technical problem.
Preparation process of the present invention comprises:
1) prepare burden
Weight of material proportioning is as follows: coal gangue is 70% ~ 72%, carbide slag is 12% ~ 14%, water is 15% ~ 17%.
2) pulverize
Reaction pulverizer is adopted to pulverize respectively coal gangue and carbide slag.
3) stir
Put the material after pulverizing into biaxial rneader, and add water and carry out continuous mixing.
4) ageing
The compound be stirred is placed in conical steel feed bin and digests.In order to prevent material from luming in steel feed bin, vibrator is set at bulkhead.
Ageing object is that in carbide slag, calcium oxide is fully cleared up, heat is produced when calcium oxide is cleared up, mixture temperature is raised, destabilization composition (as lumps such as Extend position matter) in impelling is cleared up further, thus avoid in the idiosome after shaping and demoulding, these compositions carry out clearing up again and cause the Decrepitation Phenomena of idiosome.
5) rolling
Continuous wheel mill is adopted to carry out rolling.Rolling makes active calcium oxide distribution situation in compound be tending towards close, material mix evenly.
6) compression moulding
Material compression moulding process in a mold, be first compacted near the bed of material of compacting punch die on the one hand, pressure overcomes the frictional force between particle and between particle and template on the other hand, successively transmits, material particles point of contact is constantly deformed, and air is discharged, material is compacted.The transmission of pressure in material weakens gradually along with bed depth.The bed of material near punch die is the tightest, the most loose from the punch die bed of material farthest.When pressing speed is larger, clamping time is shorter, and when idiosome is thicker, this phenomenon shows also just obvious.So, in order to make shaping base substrate, there is enough degree of compactness and homogeneity.During pressurization except the forming pressure that will be necessary, also must there is suitable pressuring method.
Forming pressure is 2MPa, adopts twice pressuring method.Molding device adopts specific equipment, this equipment considers precompressed mechanism, it is by the interval after first time mold pressing (precompressed), make the air in the preliminary blank compressed, can discharge within the of short duration time, when second time mold pressing (main pressure), apply larger pressure, enable the idiosome of compacting closely knit, not easily produce slabbing again, improve the quality of idiosome.When making pressure going down by twice pressuring method, the gas in compound is easily discharged in pressure process.
The step of secondary pressurized is as follows: lever (1) drives upper and lower cyclic motion by bent axle, pressurize (because two nibs are different from the moment of fulcrum, thus producing different pressure) to nib (2), (3) with different pressure simultaneously.According to the control of counterdie spot size, during precompressed in precompressed hole (2), charge height 75 millimeters is compressed to 45 millimeters, and discharges most of air.In main pressure hole (3), by the idiosome through precompressed, again apply the size of high pressure to specification requirement, thus complete secondary pressurized.
7) quietly to stop
Adopt xeothermic quietly to stop, be placed in by idiosome in kiln, open the venting hole on kiln top, get rid of moisture, then pass in dry heat pipe by steam, by the heat radiation of dry heat tunnel, improve kiln temperature, temperature reaches 50 ~ 60 DEG C, and idiosome is dewatered, and produces certain early strength.Be 16 ~ 36 hours between the quiet stopping time.
Quiet object of stopping is that idiosome is dewatered gradually before vapor cure, and obtains before certain steaming stable, can bear the distortion that steam impringement in vapor cure process and the temperature difference cause, to ensure the quality of masonry.
8) vapor cure
Vapor cure is divided into intensification, constant temperature, cooling three phases.Heating-up time is 2 ~ 3 hours, and heat-up rate is per hour is not more than 20 DEG C.Constant temperature time is 8 hours, and thermostat temperature remains on 95 ~ 100 DEG C.Temperature fall time is 3 ~ 4 hours, and cooling rate is per hour is not more than 20 DEG C, should stop sending vapour, and progressively open blow hole, and then open wicket during cooling, and when kiln internal-external temperature difference is less than 30 DEG C, goods can kiln discharge.
In temperature-rise period, owing to improve temperature and the humidity of media of goods, accelerate hydration reaction, make goods snap cure, this is the one side that structure is formed.Meanwhile, when heating up, due to idiosome, inside and outside the temperature difference is comparatively large, easily produces temperature deformation; And when heating up, product surface temperature is not too high, and steam coagulation is on its surface, make surface moisture larger than interior humidity, just create moisture to have and outer to move inwards, can cause the differential expansion of gas in goods internal porosity and material particle, this is all the one side of structure deteriorate when heating up.If idiosome does not have early strength before enough steamings, when being rapidly heated, then the one side of structure deteriorate can be greater than the one side that structure is formed, and idiosome just can be caused to ftracture and even destroy.Therefore, during intensification, according to the early strength of idiosome, rationally should determine heat-up rate, make the one side being conducive to structure formation, reduce the one side of structure deteriorate, thus reach good temperature rise effect.
Constant temperature makes goods in continual and steady vapor temperature, keeps the regular hour, the hydrothermal synthesis reaction of goods is fully carried out, and forms the main phase of intensity.At the constant temperature initial stage, the hydrothermal synthesis reaction of goods is relatively more violent, and hydrate generates many, and gain in strength is very fast; But after constant temperature time reaches certain numerical value, gain in strength is just comparatively front slow.Therefore, improve rapidly the intensity of goods in long constant temperature time, main employing improves the way of maintenance (constant temperature) temperature.The performance of thermostat temperature on clinker brick intensity has remarkably influenced, and temperature is higher, and product strength is also higher.Test proves, when constant temperature time is identical, when thermostat temperature is respectively 100 DEG C and 80 DEG C, the intensity of strength ratio the latter masonry of the former masonry can improve more than two times.Therefore, normally the maintenance effect of goods is improved with improving the way of curing temperature.When maintenance (constant temperature) temperature of goods is at 95 ~ 100 DEG C, constant temperature time continues 8 hours, just can meet the requirement of strength of goods.
Products temperature after constant temperature is very high, if open wicket immediately, product surface directly contacts with freezing air, will make goods that crack occurs because of temperature deformation even loose, make structure deteriorate.Temperature-fall period makes goods progressively lower the temperature after completing hydrothermal synthesis reaction exactly, to avoid above-mentioned bad phenomenon occurs.
The present invention has following effectiveness:
1 reduces environmental pollution
Utilize coal gangue and carbide slag building block can alleviate pollution to environment.
2 save soil, protectorate's soil resource
The soil deposited coal gangue and take can be reduced with bastard coal building block made of stones.Often to produce 100,000,000 pieces of building blocks, coal gangue 280,000 t can be utilized, occupation of land 1700 mu can be reduced, thus protect land resources.
3 save the energy
Make full use of waste residue, waste material produces green structural material product, have significant effect to energy conservation.
Accompanying drawing explanation
Fig. 1 molding device schematic diagram.
Accompanying drawing mark: 1 lever, 2 precompressed holes, 3 main pressure holes.
Embodiment
Below in conjunction with accompanying drawing, the present embodiment is described in detail.
The present embodiment preparation process comprises:
1) prepare burden
Weight of material proportioning is as follows: coal gangue is 71%, carbide slag is 13%, water is 16%.
2) pulverize
Reaction pulverizer is adopted to pulverize respectively coal gangue and carbide slag.
3) stir
Put the material after pulverizing into biaxial rneader, and add water and carry out continuous mixing.
4) ageing
The compound be stirred is placed in conical steel feed bin and digests.In order to prevent material from luming in steel feed bin, vibrator is set at bulkhead.
5) rolling
Continuous wheel mill is adopted to carry out rolling.Rolling makes active calcium oxide distribution situation in compound be tending towards close, material mix evenly.
6) compression moulding
Forming pressure is 2MPa, adopts twice pressuring method.Molding device adopts specific equipment, this equipment considers precompressed mechanism, it is by the interval after first time mold pressing (precompressed), make the air in the preliminary blank compressed, can discharge within the of short duration time, when second time mold pressing (main pressure), apply larger pressure, enable the idiosome of compacting closely knit, not easily produce slabbing again, improve the quality of idiosome.
The step of secondary pressurized is as follows: lever (1) drives upper and lower cyclic motion by bent axle, pressurize (because two nibs are different from the moment of fulcrum, thus producing different pressure) to nib (2), (3) with different pressure simultaneously.According to the control of counterdie spot size, during precompressed in precompressed hole (2), charge height 75 millimeters is compressed to 45 millimeters, and discharges most of air.In main pressure hole (3), by the idiosome through precompressed, again apply the size of high pressure to specification requirement, thus complete secondary pressurized.
7) quietly to stop
Adopt xeothermic quietly to stop, be placed in by idiosome in kiln, open the venting hole on kiln top, get rid of moisture, then pass in dry heat pipe by steam, by the heat radiation of dry heat tunnel, improve kiln temperature, temperature reaches 50 ~ 60 DEG C, and idiosome is dewatered, and produces certain early strength.Be 16 ~ 36 hours between the quiet stopping time.
8) vapor cure
Vapor cure is divided into intensification, constant temperature, cooling three phases.Heating-up time is 2 ~ 3 hours, and heat-up rate is per hour is not more than 20 DEG C.Constant temperature time is 8 hours, and thermostat temperature remains on 95 ~ 100 DEG C.Temperature fall time is 3 ~ 4 hours, and cooling rate is per hour is not more than 20 DEG C, should stop sending vapour, and progressively open blow hole, and then open wicket during cooling, and when kiln internal-external temperature difference is less than 30 DEG C, goods can kiln discharge.
Claims (2)
1. a coal gangue building blocks, is characterized in that preparation process comprises:
1) prepare burden
Weight of material proportioning is as follows: coal gangue is 70% ~ 72%, carbide slag is 12% ~ 14%, water is 15% ~ 17%;
2) pulverize
Reaction pulverizer is adopted to pulverize respectively coal gangue and carbide slag;
3) stir
Put the material after pulverizing into biaxial rneader, and add water and carry out continuous mixing;
4) ageing
The compound be stirred is placed in conical steel feed bin and digests, vibrator is set at bulkhead;
5) rolling
Continuous wheel mill is adopted to carry out rolling; Rolling makes active calcium oxide distribution situation in compound be tending towards close, material mix evenly;
6) compression moulding
Forming pressure is 2MPa, adopts twice pressuring method;
7) quietly to stop
Adopt xeothermic quietly to stop, be placed in by idiosome in kiln, open the venting hole on kiln top, get rid of moisture, then pass in dry heat pipe by steam, by the heat radiation of dry heat tunnel, improve kiln temperature, temperature reaches 50 ~ 60 DEG C, and idiosome is dewatered, and produces certain early strength; Be 16 ~ 36 hours between the quiet stopping time;
8) vapor cure
Vapor cure is divided into intensification, constant temperature, cooling three phases; Heating-up time is 2 ~ 3 hours, and heat-up rate is per hour is not more than 20 DEG C; Constant temperature time is 8 hours, and thermostat temperature remains on 95 ~ 100 DEG C; Temperature fall time is 3 ~ 4 hours, and cooling rate is per hour is not more than 20 DEG C, should stop sending vapour, and progressively open blow hole, and then open wicket during cooling, goods kiln discharge when kiln internal-external temperature difference is less than 30 DEG C.
2. the preparation method of coal gangue building blocks according to claim 1, it is characterized in that molding device adopts specific equipment, this equipment considers precompressed mechanism, the step of secondary pressurized is as follows: lever (1) drives upper and lower cyclic motion by bent axle, pressurizes to nib (2), (3) with different pressure simultaneously; According to the control of counterdie spot size, during precompressed in precompressed hole (2), charge height 75 millimeters is compressed to 45 millimeters, and discharges most of air; In main pressure hole (3), by the idiosome through precompressed, again apply the size of high pressure to specification requirement, thus complete secondary pressurized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410540025.0A CN104355595A (en) | 2014-09-18 | 2014-09-18 | Coal gangue building block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410540025.0A CN104355595A (en) | 2014-09-18 | 2014-09-18 | Coal gangue building block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104355595A true CN104355595A (en) | 2015-02-18 |
Family
ID=52522935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410540025.0A Pending CN104355595A (en) | 2014-09-18 | 2014-09-18 | Coal gangue building block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104355595A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292358A (en) * | 2021-06-29 | 2021-08-24 | 中建三局第一建设安装有限公司 | Steam curing process for assembled building wall |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031960A (en) * | 1987-02-24 | 1989-03-29 | 贵州省化冶研究所 | Prepare and steam the method for pressing colliery wastes brick |
| CN2093738U (en) * | 1991-05-20 | 1992-01-22 | 娄远效 | Brick making machine from dry mud |
| CN1880264A (en) * | 2006-04-27 | 2006-12-20 | 承德铜兴矿业有限责任公司 | Mine debris steamed brick and its production method |
| CN102390964A (en) * | 2011-07-29 | 2012-03-28 | 河源市固体废物集中处置中心有限公司 | Steam-pressed environment-friendly brick produced by using coal gangue residues and manufacturing method thereof |
| CN103058628A (en) * | 2013-01-04 | 2013-04-24 | 叶香竹 | Block produced by using waste slag |
-
2014
- 2014-09-18 CN CN201410540025.0A patent/CN104355595A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031960A (en) * | 1987-02-24 | 1989-03-29 | 贵州省化冶研究所 | Prepare and steam the method for pressing colliery wastes brick |
| CN2093738U (en) * | 1991-05-20 | 1992-01-22 | 娄远效 | Brick making machine from dry mud |
| CN1880264A (en) * | 2006-04-27 | 2006-12-20 | 承德铜兴矿业有限责任公司 | Mine debris steamed brick and its production method |
| CN102390964A (en) * | 2011-07-29 | 2012-03-28 | 河源市固体废物集中处置中心有限公司 | Steam-pressed environment-friendly brick produced by using coal gangue residues and manufacturing method thereof |
| CN103058628A (en) * | 2013-01-04 | 2013-04-24 | 叶香竹 | Block produced by using waste slag |
Non-Patent Citations (1)
| Title |
|---|
| 上海市房地产管理局等: "《蒸养煤渣砖》", 31 January 1979 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292358A (en) * | 2021-06-29 | 2021-08-24 | 中建三局第一建设安装有限公司 | Steam curing process for assembled building wall |
| CN113292358B (en) * | 2021-06-29 | 2022-11-01 | 中建三局第一建设安装有限公司 | Steam curing process for assembled building wall |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101555113B (en) | Aeroconcrete and preparation method thereof | |
| CN109608151B (en) | Method for preparing high-strength carbonized building material by using steel slag micro powder | |
| CN103467013B (en) | A kind of method of mixing cinder production novel light wall material | |
| CN104876519B (en) | A kind of Pb-Zn tailings and Aggregate of recycled concrete prepare autoclaved lime-sand brick method | |
| CN102826827A (en) | Sintering pitchers brick with ceramics polishing slag serving as main material and production method of sintering pitchers brick | |
| CN104987034B (en) | Method for preparing building brick through direct slag carbonization | |
| CN112079583A (en) | Building material product based on rapid carbonization of regenerated cementing material and preparation method thereof | |
| CN105330254A (en) | Environmentally friendly bricks and production method thereof | |
| CN102295441A (en) | Aerated concrete brick produced by using tailing slags | |
| CN114507062B (en) | Sintered product of electrolytic manganese slag and shale and production method thereof | |
| CN106986663B (en) | Preparation method of foamed concrete building block | |
| CN114213071A (en) | Method for preparing baking-free bricks by using building residue soil | |
| CN104611088B (en) | Fire coal desulfurization agent and preparation method thereof | |
| CN105859196A (en) | Method for preparing heat-resistant baking-free bricks | |
| CN107056202B (en) | Carbonization slag cement prepares the promotor and its application method of low-carbon cementitious material | |
| CN109942263A (en) | A kind of novel coal gangue building blocks | |
| CN1332905C (en) | Method for producing steam-pressing silicate products by waste concrete | |
| CN102815880B (en) | A kind of technique utilizing saponified residue brickmaking | |
| CN104355595A (en) | Coal gangue building block | |
| CN102775136B (en) | High-strength wear-resistant porcelain ball and preparation method thereof | |
| CN109553312A (en) | A kind of low activity blast-furnace cinder micro-powder production technology with cement retardative effect | |
| CN108002794B (en) | Method for low-temperature curing of waste gypsum into high-strength building material | |
| CN103848613A (en) | Method for producing autoclaved sand-lime bricks by utilizing glass chippings | |
| CN102887672B (en) | Air-added brick taking cullet as substrate and method for processing air-added brick | |
| CN102515674B (en) | Method for preparing baking-free load-bearing tile by curing desulfurization waste residues with semidry process at normal temperature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150218 |
|
| WD01 | Invention patent application deemed withdrawn after publication |