CN108033745A - A kind of Green production method of iron remaining fund air-entrained concrete building block - Google Patents
A kind of Green production method of iron remaining fund air-entrained concrete building block Download PDFInfo
- Publication number
- CN108033745A CN108033745A CN201711156362.XA CN201711156362A CN108033745A CN 108033745 A CN108033745 A CN 108033745A CN 201711156362 A CN201711156362 A CN 201711156362A CN 108033745 A CN108033745 A CN 108033745A
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- CN
- China
- Prior art keywords
- iron
- production method
- building block
- concrete building
- entrained concrete
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- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a kind of Green production method of iron remaining fund air-entrained concrete building block, first various raw materials are carried out with the proportioning of ball milling Control granularity, pass through scientific and reasonable composition proportion again, iron tailings slag is added in the preparation of product, under high temperature and pressure and alkaline environment, it can show good activity, the free silicon dioxide of dissolution and free alundum (Al2O3) are active and participate in chemical reaction, are conducive to improve the crystallinity of hydrated product；The present invention is under the conditions of steam press maintenance, the calcium hydroxide that calcareous material aquation in mixed material is formed reacts to have obtained tobermorite with the free silicon dioxide in iron tailings, quartz sand or free alumina, entringite disappears, the druse aggregate and aggregate weave in of hydrated product, good netted compact texture is formed, has positive effect to the intensity for improving product.The present invention focuses on the improvement of technique in process of production, reduces energy consumption, is environmentally protective production method.
Description
Technical field
The present invention relates to aerated bricks technical field, more particularly to a kind of green production side of iron remaining fund air-entrained concrete building block
Method.
Background technology
Since country " prohibits real " policy issue, novel wall material is grown rapidly.Steam-pressing aero-concrete is built
The one kind of block as novel wall material, has that light, heat insulation property is good, fire prevention and the technical advantage such as structured size, at present
Become highly important walling kind in the architectural exterior-protecting construction of Shanghai City.By the end of the year 2016, the steam pressurized coagulation in Shanghai City
Earth building blocks manufacturing enterprise has been developed to 28, and yield reaches 4,500,000 sides.However, steam pressurized coagulation similar to traditional construction material
High energy consumption, the wasting of resources, the pollution negative issue such as environment are equally also exposed in earth building blocks production process, be unfavorable for industry can
Sustainable development.Therefore, carry out the greenization production of autoclave aerated concrete building block, improve the energy level of resources utilization, reduce production
Process three waste discharge, is of great significance the transition and upgrade for promoting autoclave aerated concrete building block industry.
Air entrained concrete is that one kind forms loose structure by adding foaming agent after siliceous material and calcareous material mixing, is being steamed
The novel light wall body construction material being prepared under pressure curing condition, has excellent physical property and energy-saving and environment-friendly spy
Property, the level of comprehensive utilization of resource can be improved by preparing air-entrained concrete building block with mill tailings, solve a large amount of heaps of iron ore mine tailings
Deposit and pollute the best mode of environment.
The content of the invention
The object of the invention be exactly in order to make up prior art the defects of, there is provided a kind of iron remaining fund air-entrained concrete building block it is green
Color production method.
The present invention is achieved by the following technical solutions：
A kind of Green production method of iron remaining fund air-entrained concrete building block, including step in detail below：
（1）Iron tailings slag is put into ball mill and carries out dry ball milling, then the carry out sizing to iron tailings slag, control one
Fixed granularity ratio is stand-by；It is stand-by after river sand, quick lime, gypsum are controlled its granularity into grinding of passing through respectively；
（2）It is according to composition proportion that iron tailings, river sand, gypsum and cement mixing is uniform, insert stirring and be sanded in scattered multiple purpose aeroplane
A certain amount of warm water is added after 10-15 minutes dry-mixed, controls moisture content 65-70%, stirring continuously adds quick lime after 3-4 minutes
Stirring 1-2 minutes, adds aluminium powder and stirs 40-50 seconds；It will be cleaned out in advance in mould and smear used oil, it is in place in mould
On the premise of poured into a mould；
（3）Standard thermostatic drying box temperature is adjusted to 50-60 DEG C in advance, base substrate is put into initial set of wherein getting angry, brings up time 2-
2.5 it is small when, obtain hardening base substrate, slough framed, cutting machine carries out crosscutting, rip cutting, milling crust to base substrate, by the side of cutting
Corner material carries out recycling, and the base substrate after cutting is hung together with bottom plate to be piled up on kettle car, then base substrate is sent into still kettle, takes out
Vacuum is vented, and is passed through high steam, steam is reached defined pressure and temperature with product；Then when constant temperature and pressure 6-8 is small, protect
Card hydration reaction is normally carried out, finally using Temperature fall；
（4）Product after the completion of cooling is hoisted to product stockyard, production line is returned after empty kettle car and bottom plate cleaning, carries out down
A batch of production.
A kind of Green production method of iron remaining fund air-entrained concrete building block, step（1）It is described to iron tailings slag
Carry out sizing, control certain granularity ratio, in particular to：Cross 30 purposes and account for 35-38%, cross the particle of 60-100 mesh
50-55% is accounted for, remaining residue crosses 200 mesh sieves.
A kind of Green production method of iron remaining fund air-entrained concrete building block, step（1）The river sand is through grinding
The particle that granulometry afterwards is 95% passes through 200 mesh sieves；The particle that granulometry of the quick lime after grinding is 85% passes through 170
Mesh sieve；The particle that granulometry of the gypsum after grinding is 85% passes through 170 mesh sieves.
A kind of Green production method of iron remaining fund air-entrained concrete building block, step（1）The ball milling or powder
Mill is using bearing-type energy-saving ball mill, and ball-milling medium is cast iron section.
A kind of Green production method of iron remaining fund air-entrained concrete building block, step（2）The composition proportion is
Refer to iron tailings：River sand：Quick lime：Cement：Gypsum：Aluminium powder=45:20:19:14:2:0.12；The wherein described cement refers to commercially available
PO42.5 cement.
A kind of Green production method of iron remaining fund air-entrained concrete building block, step（2）The addition is a certain amount of
Warm water, refer to that it is 60-65 DEG C of water to add water temperature.
A kind of Green production method of iron remaining fund air-entrained concrete building block, step（3）Described makes steam and system
Product reach defined pressure and temperature and refer to 180 DEG C of temperature, pressure 1.0MPa；When the constant temperature and pressure 6-8 is small, in particular to
180-200 DEG C of constant temperature, the constant pressure of 1.2-1.25MPa.
It is an advantage of the invention that：The present invention first carries out various raw materials the proportioning of ball milling Control granularity, and granularity is material
Key property, have important influence to the performance of air-entrained concrete building block, then by scientific and reasonable composition proportion, by iron
Mine tailings are added in the preparation of product, solve the environmental problem of slag stacking, while at normal temperatures and pressures, iron tailings is one
Kind inertia industrial residue, and under high temperature and pressure and alkaline environment, good activity, the free titanium dioxide of dissolution can be shown
Silicon and free alundum (Al2O3) it is active and participate in chemical reaction, be conducive to improve hydrated product crystallinity；The present invention exists
Under the conditions of steam press maintenance, calcium hydroxide and dissociating in iron tailings, quartz sand that the calcareous material aquation in mixed material is formed
Silica or free alumina react to have obtained tobermorite, and entringite disappears, the druse aggregate and bone of hydrated product
Expect weave in, form good netted compact texture, have positive effect to the intensity for improving product.
The present invention focuses on the improvement of technique in process of production, and large-sized roller axis is used using bearing-type energy-saving ball mill
Substitution babbit glide bearing is held, frictional resistance and Static resistance moment can be reduced, makes the power of motor of ball mill than traditional bearing shell
Ball mill subtracts 10%-30%, and energy-saving effect is fairly obvious；Steel ball is replaced using new grinding media cast iron section, grinding Jie can be reduced
Slip of the matter in grinding machine, reduces crushing work loss, improves the utilization rate that medium mechanical energy is changed into down lumps power consumption, realizes
The decline of power consumption of the mill；The leftover pieces and waste product produced at the same time in cutting process is sought are recycled, and can carry out secondary operation
Utilize, reduce energy consumption, be environmentally protective production method, and the air-entrained concrete building block intensity produced is good, is worth pushing away
Extensively.
Embodiment
A kind of Green production method of iron remaining fund air-entrained concrete building block, including step in detail below：
（1）Iron tailings slag is put into the bearing-type energy-saving ball mill that ball-milling medium is cast iron section and carries out dry ball milling, then
Carry out sizing to iron tailings slag, controlled the particle of 30 mesh to account for 35%, and the particle for crossing 60 mesh accounts for 50%, remaining remaining mistake
200 mesh sieves；By river sand, quick lime, gypsum respectively into grinding of passing through, the particle that granulometry of the river sand after grinding is 95% passes through
Cross 200 mesh sieves；The particle that quick lime, the granulometry of gypsum are 85% passes through 170 mesh sieves
（2）It is according to composition proportion that iron tailings, river sand, gypsum and PO42.5 cement mixings is uniform, it is scattered more to insert stirring sand milling
With the dry-mixed warm water for adding a certain amount of 60-65 DEG C after ten minutes in machine, moisture content 65% is controlled, stirring continuously adds after 3 minutes
Quick lime stirs 1 minute, adds aluminium powder and stirs 40 seconds；It will be cleaned out in advance in mould and smear used oil, in mould just
Poured into a mould on the premise of position；
（3）Standard thermostatic drying box temperature is adjusted to 50 DEG C in advance, base substrate is put into initial set of wherein getting angry, brings up time 2 h,
Hardening base substrate is obtained, sloughs framed, cutting machine carries out crosscutting, rip cutting, milling crust to base substrate, and the leftover pieces of cutting are carried out
Recycling, the base substrate after cutting is hung together with bottom plate to be piled up on kettle car, then base substrate is sent into still kettle, the row of vacuumizing
Gas, is passed through high steam, steam is reached defined pressure and temperature, 180 DEG C of temperature, pressure 1.0MPa with product；Then 180
DEG C constant temperature, when the constant pressure 6 of 1.2MPa is small, ensure being normally carried out for hydration reaction, finally using Temperature fall；
（4）Product after the completion of cooling is hoisted to product stockyard, production line is returned after empty kettle car and bottom plate cleaning, carries out down
A batch of production.
Claims (7)
1. a kind of Green production method of iron remaining fund air-entrained concrete building block, it is characterised in that including step in detail below：
（1）Iron tailings slag is put into ball mill and carries out dry ball milling, then the carry out sizing to iron tailings slag, control one
Fixed granularity ratio is stand-by；It is stand-by after river sand, quick lime, gypsum are controlled its granularity into grinding of passing through respectively；
（2）It is according to composition proportion that iron tailings, river sand, gypsum and cement mixing is uniform, insert stirring and be sanded in scattered multiple purpose aeroplane
A certain amount of warm water is added after 10-15 minutes dry-mixed, controls moisture content 65-70%, stirring continuously adds quick lime after 3-4 minutes
Stirring 1-2 minutes, adds aluminium powder and stirs 40-50 seconds；It will be cleaned out in advance in mould and smear used oil, it is in place in mould
On the premise of poured into a mould；
（3）Standard thermostatic drying box temperature is adjusted to 50-60 DEG C in advance, base substrate is put into initial set of wherein getting angry, brings up time 2-
2.5 it is small when, obtain hardening base substrate, slough framed, cutting machine carries out crosscutting, rip cutting, milling crust to base substrate, by the side of cutting
Corner material carries out recycling, and the base substrate after cutting is hung together with bottom plate to be piled up on kettle car, then base substrate is sent into still kettle, takes out
Vacuum is vented, and is passed through high steam, steam is reached defined pressure and temperature with product；Then when constant temperature and pressure 6-8 is small, protect
Card hydration reaction is normally carried out, finally using Temperature fall；
（4）Product after the completion of cooling is hoisted to product stockyard, production line is returned after empty kettle car and bottom plate cleaning, carries out down
A batch of production.
A kind of 2. Green production method of iron remaining fund air-entrained concrete building block according to claim 1, it is characterised in that step
Suddenly（1）The carry out sizing to iron tailings slag, control certain granularity ratio, in particular to：Cross 30 purposes and account for 35-
38%, the particle for crossing 60-100 mesh accounts for 50-55%, remaining residue crosses 200 mesh sieves.
A kind of 3. Green production method of iron remaining fund air-entrained concrete building block according to claim 1, it is characterised in that step
Suddenly（1）The particle that granulometry of the river sand after grinding is 95% passes through 200 mesh sieves；Granularity of the quick lime after grinding
The particle that standard is 85% passes through 170 mesh sieves；The particle that granulometry of the gypsum after grinding is 85% passes through 170 mesh sieves.
A kind of 4. Green production method of iron remaining fund air-entrained concrete building block according to claim 1, it is characterised in that step
Suddenly（1）The ball milling or grinding are using bearing-type energy-saving ball mill, and ball-milling medium is cast iron section.
A kind of 5. Green production method of iron remaining fund air-entrained concrete building block according to claim 1, it is characterised in that step
Suddenly（2）The composition proportion refers to iron tailings：River sand：Quick lime：Cement：Gypsum：Aluminium powder=45:20:19:14:2:0.12；
The wherein described cement refers to commercially available PO42.5 cement.
A kind of 6. Green production method of iron remaining fund air-entrained concrete building block according to claim 1, it is characterised in that step
Suddenly（2）A certain amount of warm water of the addition, refers to add the water that water temperature is 60-65 DEG C.
A kind of 7. Green production method of iron remaining fund air-entrained concrete building block according to claim 1, it is characterised in that step
Suddenly（3）Described makes steam and product reach defined pressure and temperature and refer to 180 DEG C of temperature, pressure 1.0MPa；The perseverance
When warm constant pressure 6-8 is small, in particular to 180-200 DEG C of constant temperature, the constant pressure of 1.2-1.25MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711156362.XA CN108033745A (en) | 2017-11-20 | 2017-11-20 | A kind of Green production method of iron remaining fund air-entrained concrete building block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711156362.XA CN108033745A (en) | 2017-11-20 | 2017-11-20 | A kind of Green production method of iron remaining fund air-entrained concrete building block |
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| CN108033745A true CN108033745A (en) | 2018-05-15 |
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| CN201711156362.XA Pending CN108033745A (en) | 2017-11-20 | 2017-11-20 | A kind of Green production method of iron remaining fund air-entrained concrete building block |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109250997A (en) * | 2018-11-14 | 2019-01-22 | 三峡大学 | A kind of steam-pressing aero-concrete material and preparation method |
| CN113511916A (en) * | 2021-05-10 | 2021-10-19 | 贵州凯得利建材有限公司 | Quartz sand fine powder high-strength aerated brick and production process thereof |
| CN117074639A (en) * | 2023-10-18 | 2023-11-17 | 湖南三友环保科技有限公司 | Method for detecting concentration of diatom in sewage |
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|---|---|---|---|---|
| WO2009146470A1 (en) * | 2008-06-02 | 2009-12-10 | Mikayel Hamamchyan | The method of manufacturing building brick |
| CN102603358A (en) * | 2012-03-26 | 2012-07-25 | 遵化市海祥新型建材有限责任公司 | Production method for iron tailing sand aerated concrete building block |
| CN102617096A (en) * | 2012-04-05 | 2012-08-01 | 北京科技大学 | Method for preparing aerated concrete by controlling iron direction using low-silicon iron tailings |
| CN104926252A (en) * | 2015-06-02 | 2015-09-23 | 马鞍山南山开发公司 | Method for producing aerated concrete blocks by iron tailings |
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2017
- 2017-11-20 CN CN201711156362.XA patent/CN108033745A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009146470A1 (en) * | 2008-06-02 | 2009-12-10 | Mikayel Hamamchyan | The method of manufacturing building brick |
| CN102603358A (en) * | 2012-03-26 | 2012-07-25 | 遵化市海祥新型建材有限责任公司 | Production method for iron tailing sand aerated concrete building block |
| CN102617096A (en) * | 2012-04-05 | 2012-08-01 | 北京科技大学 | Method for preparing aerated concrete by controlling iron direction using low-silicon iron tailings |
| CN104926252A (en) * | 2015-06-02 | 2015-09-23 | 马鞍山南山开发公司 | Method for producing aerated concrete blocks by iron tailings |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109250997A (en) * | 2018-11-14 | 2019-01-22 | 三峡大学 | A kind of steam-pressing aero-concrete material and preparation method |
| CN113511916A (en) * | 2021-05-10 | 2021-10-19 | 贵州凯得利建材有限公司 | Quartz sand fine powder high-strength aerated brick and production process thereof |
| CN117074639A (en) * | 2023-10-18 | 2023-11-17 | 湖南三友环保科技有限公司 | Method for detecting concentration of diatom in sewage |
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Application publication date: 20180515 |