CN101250050B - Steel slag baking-free brick - Google Patents
Steel slag baking-free brick Download PDFInfo
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- CN101250050B CN101250050B CN2008100140158A CN200810014015A CN101250050B CN 101250050 B CN101250050 B CN 101250050B CN 2008100140158 A CN2008100140158 A CN 2008100140158A CN 200810014015 A CN200810014015 A CN 200810014015A CN 101250050 B CN101250050 B CN 101250050B
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- brick
- slag
- steel
- ageing
- steel slag
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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
- C04B28/18—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 mixtures of the silica-lime type
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention relates to a steel slag free sintering brick, belonging to the recycle technical field of steel slag, wherein the materials of the free sintering brick are steel slag stand, steel slag powder, blast furnace slag and lime, and the production method of the steel slag free sintering brick comprises adding water with weighted materials, mixing, pressing and shaping via a brick press, maintaining and aging to obtain final product of steel slag free sintering brick. The inventionc can shorten production period, eliminate sintering, eliminate heat energy, save time, improve yield, reduce cost and release the environment pollution of steel slag and greenhouse effect of carbon dioxide.
Description
Technical field
The invention belongs to the The Recovery and Utilization of Steel Slay field, be specially a kind of steel scoria unburned brick.
Background technology
Slag is the slag of discharging in the steelmaking process, mainly be the oxidized back of each element generates in the metal charge oxide compound, the impurity brought into of the gainster and fettling material, the metal charge that are etched with for smelting slag making materialses such as Wingdale that different steel grades need specially to add, rhombspar, iron ore, fluorite.Slag accounts for 15～20% of Iron And Steel Industry solid waste, 1 ton of crude steel of every production all can discharge the slag of about 180Kg, it is existing more than 200,000,000 tons that China accumulates slag, take up an area of more than 10,000 mu, a large amount of slags, not only appropriation of land, and slag is easy to be weathered into alkaline dust in stacking process, environment is on every side caused serious pollution.Slag is mainly used to some extent in building material field at present, as produce steel slag cement, making cement admixtion, slag micro powder, foundation material etc., but utilization ratio is lower, only account for about 10%, and annual still increase progressively,, will take increasing soil if it is not handled and fully utilizes with millions of tons bed drain purge, when forming environmental pollution, also cause the waste of a large amount of available stocks, thereby have influence on the Sustainable development of Iron And Steel Industry.
Contain a large amount of unsettled free calcium oxide f-CaO and magnesium oxide MgO in the slag, formation temperature height, advantages of good crystallization.The molecular volume of calcium oxide is 16.9cm
3/ mol, magnesian molecular volume is 10.67cm
3/ mol, the molecular volume of calcium hydroxide is 33.1cm
3/ mol, the molecular volume of magnesium hydroxide is 24.7cm
3/ mol, volume can increase nearly 1 times during the calcium oxide aquation, and volume can increase manyly during the magnesium oxide aquation, causes producing in the use of slag goods expanding, thereby has limited the use of slag in each field.Making the use of slag goods generally is that nature is placed the old slag after 20 years, and new slag can only be spiked into below 30% at most, and will add the part gelling material, could guarantee not occur to expand.At application number is in the patent application of 02114026.X, discloses a kind of making method of steel slag brick, and the defective that this method exists is that the time of maintenance is long, and the maintenance warehouse that needs is big, production cycle is long, the expense height, and investment is big, and need oven dry, expend heat energy, the cost height.
The harm that the slag goods cause engineering in ageing process mainly is to expand and efflorescence, and the requirement that the engineering material is done to slag by China is that slag needs ageing, and Pulverization ratio can not be higher than 5%, and how to address this problem is a problem that difficulty is very big now.
Summary of the invention
The objective of the invention is to exist curing time long at above-mentioned steel slag brick, production cycle is long, need the defective of heat energy oven dry and a kind of steel scoria unburned brick is provided, this method has solved the problem of above-mentioned existence, has reduced the production cycle, do not need sintering, do not need heat energy, save time, improved productivity, reduced cost, the more important thing is and to alleviate the Greenhouse effect that environmental pollution problems that slag causes and emission of carbon-dioxide are brought.
The technical scheme of steel scoria unburned brick of the present invention is that the raw material of described steel scoria unburned brick comprises slag sand 10-60 part, steel-making slag powder 5-50 part, blast furnace slag 20-70 part, lime 5-30 part, the two or more mixing after metering with in the above-mentioned raw materials add 4-15 part water and stir, to brick pressing machine compression moulding, it is characterized in that, then the brick that suppresses is put under field conditions (factors) to warehouse maintenance 2-3 days, will put into autoclave through the brick of maintenance, at normal temperatures, feeding purity is 10-100%CO
2Gas carries out ageing, and ageing pressure is 0.1-2MPa, and digestion time is 3-48h, makes the Finished Steel slag bake-free brick after the ageing.
As preferably, in the described aging step, will put into autoclave through the brick of maintenance, at normal temperatures, feed CO2 gas, ageing pressure is 0.1-1MPa, digestion time is 12-36h.
The CO that in aging step, feeds
2The purity of gas is 10-100%, can be to contain CO
2The various waste gas of gas.
The concrete grammar of making steel scoria unburned brick of the present invention is: will send into stirrer according to the load weighted material of proportioning raw materials, add entry 4-15 part, after stirring, material loading to brick pressing machine carries out the moulding compacting, the brick that suppresses is put under field conditions (factors) to warehouse maintenance 2-3 days, then brick is put into autoclave and carry out ageing, ageing finishes to obtain the Finished Steel slag bake-free brick.
The present invention's making method and step more specifically is as follows:
1. the processing of material: slag sand is to get the screen underflow of the new slag that produces of STEELMAKING PRODUCTION after overheated stewing, magnetic separation, below the particle diameter 8mm;
Steel-making slag powder be the new slag that produces of STEELMAKING PRODUCTION through magnetic separation iron after iron level less than 2%, the following fine powder of particle diameter 1mm that grinding becomes;
Blast furnace slag is the granulation slag through shrend that produces during ironmaking is produced, and crosses 5mm square hole sieve screen underflow;
Lime is through grinding;
2. moulding
Concern the weighing material according to each proportioning raw materials of steel scoria unburned brick, slag sand 10-60 part, steel-making slag powder 5-50 part, blast furnace slag 20-70 part, lime 5-30 part adds entry 4-15 part, stirs with mixer, and material loading is used brick pressing machine compression moulding to brick compacting mold;
3. maintenance
The brick that suppresses is put under field conditions (factors) to warehouse maintenance 2-3 days;
4. ageing process
Brick after the blanks and moulding and conserving is put into autoclave, at normal temperatures, feed CO
2Gas carries out ageing.
Beneficial effect of the present invention can lead to above-mentioned description is drawn, the technology of this steel scoria unburned brick is to utilize the new slag of current output fully, reduce the accumulation of slag, alleviated the environmental pollution that brings in the slag put procedure, need not to add gelling material in the moulding process, need not to use cement, promptly reduced cost, easy and simple to handle again, under performances such as intensity, stability prerequisite up to standard, solve the bad problem of stability in the new slag application process, in ageing process, fed CO
2Gas does not need to consume heat energy, and promptly save energy has been utilized greenhouse gases CO again
2, positive effect has been played in the improvement of environment, simultaneously applied CO
2Also can be the waste gas of output in the production process, calculate, can consume surplus the slag 70 ten thousand tons, utilize CO by producing 400,000,000 steel scoria unburned bricks
2Reaching ten thousand tons of 7-10, is to slag and CO
2Carry out a breakthrough of minimizing, comprehensive utilization of resources, the slag ageing is made non-burning brick technology the utilization ratio of slag is brought up to more than 60%, and active response the call of national energy-saving and emission-reduction policy, the new way of having opened up steel slag utilization is the high-tech new technology project of the treatment of wastes with processes of wastes against one another.
The ultimate compression strength of the steel scoria unburned brick finished product that obtains is the highest can to reach 30MPa, and wherein, the intensity of 80% product can reach 15MPa, and through boiling 3h, pressure is checked after steaming 3h, and stability is all qualified.Steel scoria unburned brick is carried out the requirement that Performance Detection such as freeze-thaw-, scum, water-intake rate all can reach the common brick premium grads.The square as follows form of the concrete data of various performances.
Table 1 steel scoria unburned brick performance data
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1
Get 10 parts in slag sand, 40 parts of steel-making slag powder, 50 parts of blast furnace slags, 5 parts in lime, add 10 parts of entry, stir with mixer, material loading is used brick pressing machine compression moulding to brick compacting mold, the brick that suppresses is put under field conditions (factors) to warehouse maintenance 3 days, brick after the blanks and moulding and conserving is put into high pressure vessel, at normal temperatures, feed CO
2Gas (purity is 20%), ageing pressure is 0.1MPa, and digestion time is 36h, and the mean compressive strength of the steel scoria unburned brick that obtains is: 15MPa, wherein the intensity of 80% product can reach 18MPa, and through boiling 3h, pressure is checked after steaming 3h, and stability is all qualified.The square as follows form of various performance datas.
Embodiment 2
Get 10 parts in slag sand, 40 parts of steel-making slag powder, 50 parts of blast furnace slags, 5 parts in lime, add 10 parts of entry, stir with mixer, material loading is used brick pressing machine compression moulding to brick compacting mold, the brick that suppresses is put under field conditions (factors) to warehouse maintenance 3 days, brick after the blanks and moulding and conserving is put into high pressure vessel, at normal temperatures, feed CO
2Gas (purity is 90%), ageing pressure is 0.1MPa, and digestion time is 3h, and the mean compressive strength of the steel scoria unburned brick that obtains is: 20MPa, wherein the intensity of 50% product can reach 25MPa, and through boiling 3h, pressure is checked after steaming 3h, and stability is all qualified.The square as follows form of various performance datas.
Embodiment 3
Get 10 parts in slag sand, 40 parts of steel-making slag powder, 60 parts of blast furnace slags, 5 parts in lime, add 10 parts of entry, stir with mixer, material loading is used brick pressing machine compression moulding to brick compacting mold, the brick that suppresses is put under field conditions (factors) to warehouse maintenance 3 days, brick after the blanks and moulding and conserving is put into high pressure vessel, at normal temperatures, feed CO
2Gas (purity is 20%), ageing pressure is 0.5MPa, and digestion time is 20h, and the mean compressive strength of the steel scoria unburned brick that obtains is: 15MPa, wherein the intensity of 80% product can reach 18MPa, and through boiling 3h, pressure is checked after steaming 3h, and stability is all qualified.The square as follows form of various performance datas.
Embodiment 4
Get 10 parts in slag sand, 40 parts of steel-making slag powder, 50 parts of blast furnace slags, 5 parts in lime, add 10 parts of entry, stir with mixer, material loading is used brick pressing machine compression moulding to brick compacting mold, the brick that suppresses is put under field conditions (factors) to warehouse maintenance 2 days, brick after the blanks and moulding and conserving is put into high pressure vessel, at normal temperatures, feed CO
2Gas (purity is 10%), ageing pressure is 1MPa, and digestion time is 48h, and the mean compressive strength of the steel scoria unburned brick that obtains is: 18MPa, wherein the intensity of 80% product can reach 20MPa, and through boiling 3h, pressure is checked after steaming 3h, and stability is all qualified.The square as follows form of various performance datas.
Embodiment 5
Get 10 parts in slag sand, 40 parts of steel-making slag powder, 50 parts of blast furnace slags, 5 parts in lime, add 10 parts of entry, stir with mixer, material loading is used brick pressing machine compression moulding to brick compacting mold, the brick that suppresses is put under field conditions (factors) to warehouse maintenance 2 days, brick after the blanks and moulding and conserving is put into high pressure vessel, at normal temperatures, feed CO
2Gas (purity is 10%), ageing pressure is 2MPa, and digestion time is 20h, and the mean compressive strength of the steel scoria unburned brick that obtains is: 18MPa, wherein the intensity of 80% product can reach 20MPa, and through boiling 3h, pressure is checked after steaming 3h, and stability is all qualified.The square as follows form of various performance datas.
Embodiment 6
Get 10 parts in slag sand, 40 parts of steel-making slag powder, 60 parts of blast furnace slags add 10 parts of entry, stir with mixer, material loading is used brick pressing machine compression moulding to brick compacting mold, and the brick that suppresses is put under field conditions (factors) to warehouse maintenance 3 days, brick after the blanks and moulding and conserving is put into high pressure vessel, at normal temperatures, feed CO
2Gas (purity is 20%), ageing pressure is 0.5MPa, and digestion time is 20h, and the mean compressive strength of the steel scoria unburned brick that obtains is: 15MPa, wherein the intensity of 80% product can reach 18MPa, and through boiling 3h, pressure is checked after steaming 3h, and stability is all qualified.The square as follows form of various performance datas.
Embodiment 7
Get 60 parts of steel-making slag powder, 60 parts of blast furnace slags add 10 parts of entry, stir with mixer, material loading is used brick pressing machine compression moulding to brick compacting mold, and the brick that suppresses is put under field conditions (factors) to warehouse maintenance 3 days, brick after the blanks and moulding and conserving is put into high pressure vessel, at normal temperatures, feed CO
2Gas (purity is 20%), ageing pressure is 0.5MPa, digestion time is 20h, the mean compressive strength of the steel scoria unburned brick that obtains is: 15MPa, and wherein the intensity of 80% product can reach 18MPa, through boiling 3h, check after pressing steaming 3h, stability is all qualified.The square as follows form of various performance datas.
Claims (3)
1. steel scoria unburned brick, the raw material of described steel scoria unburned brick comprises slag sand 10-60 part, steel-making slag powder 5-50 part, blast furnace slag 20-70 part, lime 5-30 part, the two or more mixing after metering with in the above-mentioned raw materials add 4-15 part water and stir, to brick pressing machine compression moulding, it is characterized in that, then the brick that suppresses is put under field conditions (factors) to warehouse maintenance 2-3 days, will put into autoclave through the brick of maintenance, at normal temperatures, feeding purity is 10-100%CO
2Gas carries out ageing, and ageing pressure is 0.1-2MPa, and digestion time is 3-48h, makes the Finished Steel slag bake-free brick after the ageing.
2. steel scoria unburned brick according to claim 1 is characterized in that, described ageing is: will put into autoclave through the brick of maintenance, and at normal temperatures, feed CO
2Gas, ageing pressure are 0.1-1MPa, and digestion time is 12-36h.
3. steel scoria unburned brick according to claim 1 is characterized in that, the making method and the step of described steel scoria unburned brick are:
1. the processing of material: slag sand is to get the screen underflow of the new slag that produces of STEELMAKING PRODUCTION after overheated stewing, magnetic separation, below the particle diameter 8mm;
Steel-making slag powder be the new slag that produces of STEELMAKING PRODUCTION through magnetic separation iron after iron level less than 2%, the following fine powder of particle diameter 1mm that grinding becomes;
Blast furnace slag is the granulation slag through shrend that produces during ironmaking is produced, and crosses 5mm square hole sieve screen underflow;
Lime is through grinding;
2. moulding
Concern the weighing material according to each proportioning raw materials of steel scoria unburned brick, slag sand 10-60 part, steel-making slag powder 5-50 part, blast furnace slag 20-70 part, lime 5-30 part adds entry 4-15 part, stirs with mixer, and material loading is used brick pressing machine compression moulding to brick compacting mold;
3. maintenance
The brick that suppresses is put under field conditions (factors) to warehouse maintenance 2-3 days;
4. ageing process
Brick after the blanks and moulding and conserving is put into autoclave, at normal temperatures, feed CO
2Gas carries out ageing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100140158A CN101250050B (en) | 2008-01-21 | 2008-01-21 | Steel slag baking-free brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100140158A CN101250050B (en) | 2008-01-21 | 2008-01-21 | Steel slag baking-free brick |
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| Publication Number | Publication Date |
|---|---|
| CN101250050A CN101250050A (en) | 2008-08-27 |
| CN101250050B true CN101250050B (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100140158A Expired - Fee Related CN101250050B (en) | 2008-01-21 | 2008-01-21 | Steel slag baking-free brick |
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927524B (en) * | 2009-06-23 | 2012-09-05 | 鞍山钢铁集团公司 | Method for producing baking-free slag bricks by using steel slag sludge of rotating furnace |
| CN102491776A (en) * | 2011-11-11 | 2012-06-13 | 中冶宝钢技术服务有限公司 | Perforated brick including steel slag powder gelatificaiton material |
| CN103396082A (en) * | 2013-07-30 | 2013-11-20 | 广西启利新材料科技股份有限公司 | Baking-free brick using steel slag as main raw material |
| CN104987034B (en) * | 2015-07-01 | 2017-01-11 | 盐城工学院 | Method for preparing building brick through direct slag carbonization |
| CN105801069B (en) * | 2016-02-25 | 2017-11-10 | 武汉大学 | A kind of method for preparing high carbon capacity plastics products for building |
| CN106082939A (en) * | 2016-06-14 | 2016-11-09 | 湖北工业大学 | A kind of method utilizing industrial residue to prepare no-firing brick |
| CN106082947A (en) * | 2016-06-20 | 2016-11-09 | 安徽金丰新型建材有限公司 | A kind of frost resistance is the most non-burning brick |
| CN106082943A (en) * | 2016-06-20 | 2016-11-09 | 安徽金丰新型建材有限公司 | A kind of comprise the non-burning brick of municipal refuse |
| CN106277983B (en) * | 2016-08-15 | 2018-11-02 | 贵州安顺家喻新型材料股份有限公司 | A kind of baking-free insulating brick and preparation method thereof |
| CN106278071B (en) * | 2016-08-15 | 2018-09-25 | 贵州安顺家喻新型材料股份有限公司 | A kind of manufacturing method of environmental protection brick |
| CN107162541A (en) * | 2017-05-27 | 2017-09-15 | 明光市泰丰新材料有限公司 | The energy-saving brick and preparation method of a kind of utilization sludge of sewage treatment plant manufacture |
| CN107673685A (en) * | 2017-10-24 | 2018-02-09 | 广西力合城市矿产再生资源科技有限公司 | The method that environment-friendly baking-free bricks are made using stainless steel waste residue |
| CN107651924A (en) * | 2017-10-26 | 2018-02-02 | 西南科技大学 | A kind of alkali-activated carbonatite high-titanium slag small-sized hollow building block and preparation method thereof |
| CN107879704A (en) * | 2017-11-21 | 2018-04-06 | 常州市奥普泰科光电有限公司 | A kind of preparation method of compound slag carbonated lime brick |
| CN111574146B (en) * | 2020-04-20 | 2021-08-24 | 浙江大学 | Method for preparing industrial solid waste base baking-free brick by combining composite cementing material with carbonation curing technology |
| CN114031344A (en) * | 2021-11-01 | 2022-02-11 | 中国地质大学（北京） | Method for preparing baking-free pavement brick by using used refractory material erosion slag |
| CN115286332B (en) * | 2022-08-17 | 2023-09-15 | 承德建龙特殊钢有限公司 | Waste residue baking-free brick and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1371789A (en) * | 2002-04-01 | 2002-10-02 | 林小松 | Method for making cement-free steel slag brick and building block |
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2008
- 2008-01-21 CN CN2008100140158A patent/CN101250050B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1371789A (en) * | 2002-04-01 | 2002-10-02 | 林小松 | Method for making cement-free steel slag brick and building block |
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