CN103951366B - Utilize grass-planting brick and the manufacture method thereof of sintering flue gas semi-dry desulphurization ash manufacture - Google Patents
Utilize grass-planting brick and the manufacture method thereof of sintering flue gas semi-dry desulphurization ash manufacture Download PDFInfo
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- CN103951366B CN103951366B CN201410157310.4A CN201410157310A CN103951366B CN 103951366 B CN103951366 B CN 103951366B CN 201410157310 A CN201410157310 A CN 201410157310A CN 103951366 B CN103951366 B CN 103951366B
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Abstract
The invention discloses a kind of grass-planting brick utilizing sintering flue gas semi-dry desulphurization ash to manufacture and manufacture method thereof, component and the weight percent content proportioning thereof of this grass-planting brick are as follows: semi-dry desulphurization ash: 5～25%；Slag: 30～50%；Breeze: 10～30%；Cement: 0～10%；Gather materials: 5～20%.The method comprises the following steps: 1) takes the described component after drying grinds and is mixed to form siccative by described proportioning, then stirs adding water in siccative, form wet compound；2) wet compound injection grassed brick mould will be pressed into idiosome under room temperature and 170～550 tons of pressure；3) by idiosome room temperature maintenance in the open 7～8 days, period fetches water holding idiosome surface wettability, is then naturally placed 28～30 days by idiosome, i.e. prepares high intensity grass-planting brick.7 days comprcssive strength of the grass-planting brick that the present invention prepares reaches more than 10Mpa, and within 28 days, comprcssive strength reaches 15Mpa, higher by 50% than existing common grass-planting brick, the comprcssive strength of grass-planting brick is greatly improved and achieves the resource of waste residue.
Description
Technical field
The present invention relates to flue gas desulfurization byproduct resource technology, utilize sintering in particular to one
The grass-planting brick of flue gas semi-dry desulphurization ash manufacture and manufacture method thereof.
Background technology
Semi-dry desulphurization ash is a kind of by-product that steel plant's semi-dry process flue gas desulphurization system produces,
Owing to there is no preferable utilization ways, save as master with heap at present.Along with semi-dry desulphurization project
Increase, the generation amount cumulative year after year of Desulphurization, according to statistics, a 360m2Sintering machine uses complete
Flue gas desulfurization, produces 4～50,000 tons of Desulphurizations the most every year, and substantial amounts of Desulphurization is to ecological environment
Cause severe contamination, bring huge environmental protection pressure the most also to desulfurization enterprise.
It addition, along with country's Ecological Civilization Construction paces are accelerated, for grass-planting brick, water-permeable brick etc.
The demand of environment-friendly building materials get more and more, grass-planting brick grass planting region is become can load bearing surface, be suitable for
In parking lot, footpath, Vomitory and solid slope bank protection etc., be widely used in urban road and change
Make, construction of park, community's greening etc..But, existing grass-planting brick has the disadvantage in that 1)
Its as can load bearing surface, comprcssive strength need improve；2) grass-planting brick high expensive,
Await reducing.
Summary of the invention
Present invention aim to provide a kind of and utilize sintering flue gas semi-dry desulphurization ash manufacture
Grass-planting brick and manufacture method, this grass-planting brick comprcssive strength is high, with low cost.
For achieving the above object, the technical solution used in the present invention is: a kind of utilization sinters flue gas
The grass-planting brick that semi-dry desulphurization ash manufactures, component and the weight percent content thereof of this grass-planting brick are joined
Ratio is as follows:
Further, the weight percent content proportioning of described component is as follows:
Further, described semi-dry desulphurization ash be mainly composed of calcium sulfate, its sulfite
The weight percent content of calcium is 0～20%, and the weight percent content of calcium oxide is 0～5%.
Described Desulphurization is by-product produced by sintering Semi-dry Flue Gas Desulfurization Technology.
Further, described slag is converter slag, wherein the weight percent content of magnesium oxide
It is 0～13%；Basicity >=2.5 of described slag, particle diameter is 0.1～9mm.Slag is for meeting
The converter slag that YB/T022 requires, basicity [CaO/ (SiO2+P2O5)] not less than 2.5.
Further, the specific surface area of described breeze is 450～800m2/ kg, in described breeze
Vitrea weight percent content be 85～95%.Breeze is for meeting GB/T203 requirement
Breeze, and wherein vitreous body weight percent content is not less than 85%, and specific surface area is not less than
450m2/kg。
Further, described in gather materials for Guamishi, described cement is commercially available R42.5 rating cement.
The manufacture method of the grass-planting brick that a kind of above-mentioned utilization sintering flue gas semi-dry desulphurization ash manufactures,
Comprise the following steps:
1) take the semi-dry desulphurization ash after drying grinds, slag, breeze, cement, and gather materials
It is mixed to form siccative by described proportioning, then stirs described siccative adds water, formed wet
Compound；
2) described wet compound is injected in grassed brick mould at room temperature and 170～550 tons of pressure
Under be pressed into idiosome；
3) by described idiosome room temperature maintenance in the open 7～8 days, period fetches water holding idiosome surface
Moistening, then described idiosome is placed 28～30 days naturally, i.e. prepare high intensity grass-planting brick.
Further, in described step 1), water is by the ratio that the weight ratio accounting for siccative is 4～8%
Example adds.
Further, in described step 3), described in fetch water fetch water first and make 24 at idiosome
Carrying out after hour, frequency of fetching water is every day 2～3 times.
Further, in described step 1), the particle diameter controlling described slag is 0.1～9mm,
The specific surface area of described breeze is 450～800m2/kg.
Compared with prior art, the invention have the advantages that
One, 7 days comprcssive strength of the grass-planting brick that the present invention prepares reaches more than 10Mpa, 28 days
Comprcssive strength is up to 15Mpa, higher by 50% than existing common grass-planting brick, and grass planting is greatly improved
The comprcssive strength of brick.
Its two, the present invention manufacture take full advantage of during grass-planting brick Desulphurization, slag and
The waste residues such as breeze, this manufacture method waste residue incorporation is big, and cement consumption is few, the grass planting produced
Brick intensity is high, and quality is good, and production cost is low, and its all technical meets NY/T1253-2006
Standard-required；The present invention solves the most oxidation-treated building materials that cannot be used for of semi-dry desulphurization ash and gives birth to
The problem produced, also solves enterprise because of slag or breeze simultaneously and stores up the occupation of land and two brought in a large number
Secondary pollution problem.
Its three, the inventive method improves process and the disposal efficiency of waste residue, improve secondary money
The development level in source, has higher economic worth and the value of environmental protection.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, it is simple to more clearly
Solve the present invention, but they do not constitute restriction to the present invention.
In following example, Desulphurization used is by-product produced by semi-dry desulfurizing process, its
Sulfite weight percent calcium content is less than 20%, and calcium oxide weight percent content is less than
5%；Slag used is to meet the converter slag that YB/T022 requires, magnesium oxide weight in slag
Degree≤13%, basicity [CaO/ (SiO2+P2O5)] >=2.5, granularity is less than 9mm；
Breeze used is the breeze of the requirement meeting GB/T203, and wherein vitreous body percentage by weight
Content is not less than 85%, and specific surface area is not less than 450m2/ kg: cement used is commercially available R42.5
Rating cement.
Embodiment 1:
First take steel plant's semi-dry desulphurization ash, select ferrum after slag and breeze put into 100 DEG C of bakings
In case dry, wherein, the particle diameter of slag is 0.1～9mm, the specific surface area of breeze be 450～
800m2/ kg, another cement and the commercially available finished product Guamishi of preparing, Guamishi washing is standby after removing mud；
Then Desulphurization is pressed: slag: breeze: cement: Guamishi=10%:40%:30%:5%:
The weight percentage proportioning of 15% weighs raw material, is mixed to form siccative, and siccative is put into stirring
In machine, by water capacity 4～8%, preferably 5% adds water stirs, and forms wet compound；
Finally wet compound is injected in mould, at room temperature and 170～550 tons of pressure, preferably 350 tons
Be pressed into grass-planting brick idiosome under pressure, mould after taking out, idiosome maintenance at normal temperatures 7～8
My god, preferably 7 days, fetch water every day 2～3 times, preferably sooner or later respectively fetch water 1 time, keep idiosome surface
Moistening, fetch water first and carry out after idiosome makes 24 hours.Measure by GB17671-1999 and plant
Grass 7 days comprcssive strength of brick reaches 11Mpa, and within 28 days, comprcssive strength reaches 14MPa.
Embodiment 2:
First take steel plant's semi-dry desulphurization ash, select ferrum after slag and breeze put into 100 DEG C of bakings
In case dry, wherein, the particle diameter of slag is 0.1～9mm, the specific surface area of breeze be 450～
800m2/ kg, another cement and the commercially available finished product Guamishi of preparing, Guamishi washing is standby after removing mud；
Then Desulphurization is pressed: slag: breeze: cement: Guamishi=15%:40%:25%:5%:
The weight percentage proportioning of 15% weighs raw material, is mixed to form siccative, and siccative is put into stirring
In machine, add water by water capacity 7.5% and stir, form wet compound；Finally by wet mixing
Close material to inject in mould, under 350 tons of pressure, be pressed into grass-planting brick idiosome, mould after taking out,
Idiosome maintenance at normal temperatures 7 days, respectively fetches water 1 time every day sooner or later.Measure by GB17671-1999
28 days comprcssive strength of grass-planting brick reaches 13.75MPa.
Embodiment 3:
First take steel plant's semi-dry desulphurization ash, select ferrum after slag and breeze put into 100 DEG C of bakings
In case dry, wherein, the particle diameter of slag is 0.1～9mm, the specific surface area of breeze be 450～
800m2/ kg, another cement and the commercially available finished product Guamishi of preparing, Guamishi washing is standby after removing mud；
Then Desulphurization is pressed: slag: breeze: cement: Guamishi=20%:40%:20%:5%:
The weight percentage proportioning of 15% weighs raw material, is mixed to form siccative, and siccative is put into stirring
In machine, add water by water capacity 6% and stir, form wet compound；Finally by wet mixing
Close material to inject in mould, under 350 tons of pressure, be pressed into grass-planting brick idiosome, mould after taking out,
Idiosome maintenance at normal temperatures 7 days, respectively fetches water 1 time every day sooner or later.Measure by GB17671-1999
28 days comprcssive strength of grass-planting brick reaches 12.63MPa.
Embodiment 4:
First take steel plant's semi-dry desulphurization ash, select ferrum after slag and breeze put into 100 DEG C of bakings
In case dry, wherein, the particle diameter of slag is 0.1～9mm, the specific surface area of breeze be 450～
800m2/ kg, another cement and the commercially available finished product Guamishi of preparing, Guamishi washing is standby after removing mud；
Then Desulphurization is pressed: slag: breeze: cement: Guamishi=5%:50%:30%:5%:
The weight percentage proportioning of 10% weighs raw material, is mixed to form siccative, and siccative is put into stirring
In machine, add water by water capacity 6.5% and stir, form wet compound；Finally by wet mixing
Close material to inject in mould, under 350 tons of pressure, be pressed into grass-planting brick idiosome, mould after taking out,
Idiosome maintenance at normal temperatures 7 days, respectively fetches water 1 time every day sooner or later.Measure by GB17671-1999
28 days comprcssive strength of grass-planting brick reaches 15.35MPa.
Embodiment 5:
First take steel plant's semi-dry desulphurization ash, select ferrum after slag and breeze put into 100 DEG C of bakings
In case dry, wherein, the particle diameter of slag is 0.1～9mm, the specific surface area of breeze be 450～
800m2/ kg, another cement and the commercially available finished product Guamishi of preparing, Guamishi washing is standby after removing mud；
Then Desulphurization is pressed: slag: breeze: cement: Guamishi=25%:35%:10%:10%:
The weight percentage proportioning of 20% weighs raw material, is mixed to form siccative, and siccative is put into stirring
In machine, add water by water capacity 8% and stir, form wet compound；Finally by wet mixing
Close material to inject in mould, under 170 tons of pressure, be pressed into grass-planting brick idiosome, mould after taking out,
Idiosome maintenance at normal temperatures 7 days, respectively fetches water 1 time every day sooner or later.Measure by GB17671-1999
28 days comprcssive strength of grass-planting brick reaches 14.35MPa.
Embodiment 6:
First take steel plant's semi-dry desulphurization ash, select ferrum after slag and breeze put into 100 DEG C of bakings
In case dry, wherein, the particle diameter of slag is 0.1～9mm, the specific surface area of breeze be 450～
800m2/ kg, the commercially available finished product Guamishi of another preparation, washing is standby after removing mud；Then Desulphurization is pressed:
Slag: breeze: the weight percentage proportioning of Guamishi=25%:30%:25%:20% claims
Take raw material, be mixed to form siccative, siccative is put in blender, add water by water capacity 4% and fill
Divide and stir, form wet compound；Finally wet compound is injected in mould, at 550 tons
Be pressed into grass-planting brick idiosome under pressure, mould after taking out, idiosome maintenance at normal temperatures 7 days,
Every day respectively fetches water 1 time sooner or later.Measure 28 days comprcssive strength of grass-planting brick by GB17671-1999 to reach
12.75MPa。
Embodiment 7:
First take steel plant's semi-dry desulphurization ash, select ferrum after slag and breeze put into 100 DEG C of bakings
In case dry, wherein, the particle diameter of slag is 0.1～9mm, the specific surface area of breeze be 450～
800m2/kg, another cement and the commercially available finished product Guamishi of preparing, Guamishi washing is standby after removing mud；
Then Desulphurization is pressed: slag: breeze: cement: Guamishi=20%:50%:20%:5%:
The weight percentage proportioning of 5% weighs raw material, is mixed to form siccative, and siccative is put into stirring
In machine, add water by water capacity 7% and stir, form wet compound；Finally by wet mixing
Close material to inject in mould, under 350 tons of pressure, be pressed into grass-planting brick idiosome, mould after taking out,
Idiosome maintenance at normal temperatures 7 days, respectively fetches water 1 time every day sooner or later.Measure by GB17671-1999
28 days comprcssive strength of grass-planting brick reaches 14.8MPa.
Claims (3)
1. one kind utilizes the grass-planting brick that sintering flue gas semi-dry desulphurization ash manufactures, it is characterised in that:
Component and the weight percent content proportioning thereof of this grass-planting brick are as follows:
Described slag is converter slag, and wherein the weight percent content of magnesium oxide is 0～13%；
Basicity >=2.5 of described slag, particle diameter is 0.1～9mm；
The specific surface area of described breeze is 450～800m2/ kg, Vitrea in described breeze
Weight percent content is 85～95%；
Described semi-dry desulphurization ash be mainly composed of calcium sulfate, the wherein weight hundred of calcium sulfite
Proportion by subtraction content is 0～20%, and the weight percent content of calcium oxide is 0～5%.
The most according to claim 1 utilization sinters planting of flue gas semi-dry desulphurization ash manufacture
Grass brick, it is characterised in that gathering materials for Guamishi described in:, described cement is commercially available 42.5R grade
Cement.
3. described in a claim 1, utilize the grass planting that sintering flue gas semi-dry desulphurization ash manufactures
The manufacture method of brick, comprises the following steps:
1) take dry grind after semi-dry desulphurization ash, slag, breeze, cement and gather materials by
Described proportioning is mixed to form siccative, then stirs adding water in described siccative, forms wet mixing
Close material；Water is in the ratio addition that the weight ratio accounting for siccative is 4～8%；Control the grain of described slag
Footpath is 0.1～9mm, and the specific surface area of described breeze is 450～800m2/kg；
2) described wet compound is injected in grassed brick mould at room temperature and 170～550 tons of pressure
Under be pressed into idiosome；
3) by described idiosome room temperature maintenance in the open 7～8 days, period fetches water holding idiosome surface
Moistening, then described idiosome is placed 28～30 days naturally, i.e. prepare high intensity grass-planting brick；Institute
Stating fetching water first of fetching water to carry out after idiosome makes 24 hours, frequency of fetching water is every day 2～3
Secondary.
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| CN201410157310.4A CN103951366B (en) | 2014-04-17 | 2014-04-17 | Utilize grass-planting brick and the manufacture method thereof of sintering flue gas semi-dry desulphurization ash manufacture |
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| CN201410157310.4A CN103951366B (en) | 2014-04-17 | 2014-04-17 | Utilize grass-planting brick and the manufacture method thereof of sintering flue gas semi-dry desulphurization ash manufacture |
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| JP2005231947A (en) * | 2004-02-19 | 2005-09-02 | Nippon Magnetic Dressing Co Ltd | Method of treating steel slag to make aggregate |
| CN101805162A (en) * | 2010-02-04 | 2010-08-18 | 南京信息工程大学 | Non-fired and non-steamed fly ash brick produced by using CFBC desulphurization residues and preparation process thereof |
| CN101973749A (en) * | 2010-10-18 | 2011-02-16 | 武汉凯迪电力股份有限公司 | Non-sintered brick based on flue gas desulfurization byproduct and preparation method thereof |
| CN102674799A (en) * | 2012-05-18 | 2012-09-19 | 武汉钢铁(集团)公司 | Semidry-process sintering desulphurization slag autoclaved building block and production method thereof |
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Effective date of registration: 20170721 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 15 Wuchang, Wuhan Friendship Avenue, No. 999, block A, layer (Wuhan Iron and steel science and technology innovation department), No. 430080, Patentee before: Wuhan Iron & Steel (Group) Corp. |
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