CN101244461A - Process for producing steel scoria unburned brick - Google Patents
Process for producing steel scoria unburned brick Download PDFInfo
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- CN101244461A CN101244461A CNA2008100154080A CN200810015408A CN101244461A CN 101244461 A CN101244461 A CN 101244461A CN A2008100154080 A CNA2008100154080 A CN A2008100154080A CN 200810015408 A CN200810015408 A CN 200810015408A CN 101244461 A CN101244461 A CN 101244461A
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- brick
- steel slag
- steel
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- slag
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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
- 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
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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
- 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 making method of steel slag non-burnt brick, which belongs to steel slag reclamation field; wherein, the technical proposal resolves the problems of the prior steel slag non-burnt brick of requiring maintenance time, requiring pressure in the process of aging, high equipment cost, requiring handling and other multiple operation steps, large amount of labor, and high cost of man power and material resources. The making method of steel slag non-burnt brick is characterized in that (1) at least two materials from steel slag sand, steel slag powder, blast furnace slag and lime are weighed and fed into the blender, (2) water is added and the materials are stirred evenly, (3) the materials are fed into the brick molding press to press and form, (4) the formed brick is processed aging at the atmospheric pressure directly, (5) the industrial exhaust gas comprising CO2 is injected in the process of aging, and (6) the finished steel slag non-burnt brick is acquired as the process of aging is completed. The making method of steel slag non-burnt brick has the advantages that maintenance time is unnecessary, the pressure in the process of aging is unnecessary, requirement of equipment is low, the waste gas residual heat is utilized directly, and the cost is low.
Description
Technical field
The invention belongs to the The Recovery and Utilization of Steel Slay field, be specially a kind of preparation method 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, the impurity brought into of the gainster and fettling material, the metal charge that are etched with for smelting slag making materialses such as lime stone that different steel grades need specially to add, dolomite, iron ore, fluorite.Slag accounts for 15～20% of steel and iron 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 slag cement, making cement batch, slag micro powder, foundation material etc., but utilization rate 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 resources, thereby have influence on the sustainable development of steel and iron industry.
The applicant is in having applied for that a name is called the patent application of " a kind of steel scoria unburned brick " 08.1.21 day, its application number is 200810014015.8, a kind of steel scoria unburned brick is disclosed in this document, the raw material of described steel scoria unburned brick comprises slag sand, steel-making slag powder, blast furnace slag, lime, the method of making described steel scoria unburned brick is, with two kinds in the above-mentioned raw materials or two or more according to certain proportioning, mix after metering, adding water stirs, to brick machine compression moulding, then through maintenance, make the finished steel slag bake-free brick after the ageing, described ageing feeds and stores CO with high-pressure cylinder at normal temperatures
2Gas needs ageing pressure, and the defective that this method exists is, need curing time, ageing needs pressure, and ageing need be carried out in autoclave, like this equipment is required than higher, so cost height of equipment, maintenance need take very large space, and area of mill site is big, and operation link such as carrying is many, the amount of labour is big, the cost height of manpower and materials.
Summary of the invention
The objective of the invention is the defective that exists at above-mentioned steel scoria unburned brick and the further improvement of carrying out, the preparation method of this steel scoria unburned brick has solved the problem of above-mentioned existence, do not need curing time, in ageing process, do not need pressure, less demanding to equipment, and directly utilizing the waste heat of waste gas, cost reduces.
Technical scheme of the present invention is a kind of preparation method of steel scoria unburned brick, the raw material that it uses comprises slag sand, steel-making slag powder, blast furnace slag, lime, the operating procedure of making described steel scoria unburned brick is, with two kinds in the above-mentioned raw materials or two or more according to certain proportioning, mix after metering, add water and stir, to brick machine compression moulding, the brick of compression moulding directly carries out ageing under normal pressure, what feed in ageing contains CO
2Gas for containing CO
2Industrial tail gas, ageing finishes to obtain the finished steel slag bake-free brick.The applicant's who points out in the weight proportion relation of described raw material and the background technology patent application the preceding is identical.
The characteristics of the technical scheme of the preparation method of steel scoria unburned brick of the present invention are: the brick of compression moulding is directly put into closed container or passage, under normal pressure, feed 30-100 ℃ and contain CO
2Industrial tail gas, this feeding contain CO
2The temperature of gas is 30-100 ℃, and digestion time is 24-96h.Described industrial tail gas is variously can produce CO
2The tail gas that produces such as kiln, blast furnace.
As preferably, in the described ageing behaviour step, digestion time is 36-60h; Contain CO in the tail gas that in aging step, feeds
2Concentration do not limit, different and different according to tail gas.
The present invention's operating procedure more specifically is as follows:
1. the processing of material: slag sand is to get the screenings 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 content 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 screen screenings;
Lime is through grinding;
2. moulding
According to each raw material proportion relation weighing material (the applicant's who points out in proportion of raw materials and the background technology patent application the preceding is identical), 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 batch mixer, material loading is used brick machine compression moulding to brick compacting mold;
3. ageing process
Brick after the moulding is directly put into closed container or passage, under normal pressure, feed 30-100 ℃ the CO that contains
2Industrial tail gas, carry out ageing.
The 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 thawing resistance, scum, water absorption rate all can reach the common brick high-class product.The square as follows form of the concrete data of various performances.
Beneficial effect of the present invention can obtain by above-mentioned description, this technical scheme does not have the maintenance step, and the step that simplifies the operation is saved operation link, reduced the amount of labour, labor savings, and can reduce the floor space of workplace, ageing process carries out under normal pressure, does not need pressure, the various performances of the steel scoria unburned brick that obtains have not only satisfied national standard, and function admirable, the requirement for maturing equipment simultaneously reduces, and cost is also just corresponding to be reduced.Feed 30-100 ℃ in the ageing and contain CO
2Industrial tail gas gas, promoting ageing reaction on the one hand, save digestion time, improve the ageing effect, on the other hand in the better effects if of alleviating aspect the greenhouse effects that environmental pollution problems that slag causes and emission of carbon-dioxide bring, can also alleviate the problem of acid rain to the absorption of the sulfur dioxide that wherein contains.The steel scoria unburned brick that the technical scheme of this preparation method is produced, the intensity of finished bricks is greater than 15MPa, and equipment cost is reduced to 15%-20%, and the cost of other material resources of manpower etc. reduces 5%-10%, and the production cycle is 24-96h.This shows that the present invention possesses outstanding substantive distinguishing features and obvious improvement.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
In specific embodiment, the patent application the preceding with magnitude relation and the applicant of described raw material is identical, below only with regard to concrete the illustrating of the variation of ageing condition.
Embodiment 1
The raw material that configures is stirred with batch mixer, and material loading is used brick machine compression moulding to brick compacting mold, and the brick that suppresses is directly put into closed container or passage, under normal pressure, feeds 30 ℃ and contains CO
2Concentration be 50% industrial tail gas, digestion time is 60h, 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, stability is all qualified, equipment cost is reduced to 17%, and it is 6% that the cost of other material resources of manpower etc. lowers, and the production cycle is 72h.
Embodiment 2
The raw material that configures is stirred with batch mixer, and material loading is used brick machine compression moulding to brick compacting mold, and the brick that suppresses is directly put into closed container or passage, under normal pressure, feeds 50 ℃ and contains CO
2Concentration be 60% industrial tail gas, digestion time is 24h, 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, stability is all qualified, equipment cost is reduced to 20%, and it is 10% that the cost of other material resources of manpower etc. lowers, and the production cycle is 36h.
Embodiment 3
The raw material that configures is stirred with batch mixer, and material loading is used brick machine compression moulding to brick compacting mold, and the brick that suppresses is directly put into closed container or passage, under normal pressure, feeds 30 ℃ and contains CO
2Concentration be 10% industrial tail gas, digestion time is 96h, 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, stability is all qualified, equipment cost is reduced to 15%, and it is 5% that the cost of other material resources of manpower etc. lowers, and the production cycle is 108h.
Embodiment 4
The raw material that configures is stirred with batch mixer, and material loading is used brick machine compression moulding to brick compacting mold, and the brick that suppresses is directly put into closed container or passage, under normal pressure, feeds 70 ℃ and contains CO
2Concentration be 30% industrial tail gas, digestion time is 36h, the mean compressive strength of the steel scoria unburned brick that obtains is: 18MPa, wherein the intensity of 8O% product can reach 2OMPa, and through boiling 3h, pressure is checked after steaming 3h, stability is all qualified, equipment cost is reduced to 20%, and it is 9% that the cost of other material resources of manpower etc. lowers, and the production cycle is 48h.
Embodiment 5
The raw material that configures is stirred with batch mixer, and material loading is used brick machine compression moulding to brick compacting mold, and the brick that suppresses is directly put into closed container or passage, under normal pressure, feeds 90 ℃ and contains CO
2Concentration be 10% industrial tail gas, digestion time is 48h, 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, stability is all qualified, equipment cost is reduced to 19%, and it is 9% that the cost of other material resources of manpower etc. lowers, and the production cycle is 60h.
Claims (3)
1. the preparation method of a steel scoria unburned brick, two kinds in raw material slag sand, steel-making slag powder, blast furnace slag, the lime or two or more material weighing are sent into mixer well, add entry, after stirring, material loading to brick machine carries out the moulding compacting, it is characterized in that the brick of compression moulding directly carries out ageing under normal pressure, feeding contains CO in ageing
2Industrial tail gas, ageing finishes to obtain the finished steel slag bake-free brick.
2. the preparation method of steel scoria unburned brick according to claim 1 is characterized in that, described ageing is specially: the brick of compression moulding is directly put into closed container or passage, under normal pressure, feeds 30-100 ℃ and contains CO
2Industrial tail gas, digestion time is 24-96h.
3. the preparation method of steel scoria unburned brick according to claim 1 is characterized in that, described digestion time is 36-60h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810015408A CN100577331C (en) | 2008-03-21 | 2008-03-21 | Process for producing steel scoria unburned brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810015408A CN100577331C (en) | 2008-03-21 | 2008-03-21 | Process for producing steel scoria unburned brick |
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| Publication Number | Publication Date |
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| CN101244461A true CN101244461A (en) | 2008-08-20 |
| CN100577331C CN100577331C (en) | 2010-01-06 |
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| CN200810015408A Expired - Fee Related CN100577331C (en) | 2008-03-21 | 2008-03-21 | Process for producing steel scoria unburned brick |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106277983A (en) * | 2016-08-15 | 2017-01-04 | 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 |
| CN106278071A (en) * | 2016-08-15 | 2017-01-04 | 贵州安顺家喻新型材料股份有限公司 | A kind of manufacture method of environmental protection brick |
| CN106380171A (en) * | 2016-08-31 | 2017-02-08 | 昆明钢铁控股有限公司 | Slag antique building block and production method thereof |
| CN107056218A (en) * | 2017-06-06 | 2017-08-18 | 肥西县碧涛建材有限公司 | A kind of slag azulejo and preparation method |
| CN108529939A (en) * | 2018-04-27 | 2018-09-14 | 山西大学 | A kind of preparation method of steel scoria unburned brick |
| CN109608151A (en) * | 2019-01-21 | 2019-04-12 | 北京科技大学 | A method of high-strength carbonization building materials are prepared using slag micro powder |
-
2008
- 2008-03-21 CN CN200810015408A patent/CN100577331C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106277983A (en) * | 2016-08-15 | 2017-01-04 | 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 |
| CN106278071A (en) * | 2016-08-15 | 2017-01-04 | 贵州安顺家喻新型材料股份有限公司 | A kind of manufacture method of environmental protection brick |
| 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 |
| CN106380171A (en) * | 2016-08-31 | 2017-02-08 | 昆明钢铁控股有限公司 | Slag antique building block and production method thereof |
| CN107056218A (en) * | 2017-06-06 | 2017-08-18 | 肥西县碧涛建材有限公司 | A kind of slag azulejo and preparation method |
| CN108529939A (en) * | 2018-04-27 | 2018-09-14 | 山西大学 | A kind of preparation method of steel scoria unburned brick |
| CN109608151A (en) * | 2019-01-21 | 2019-04-12 | 北京科技大学 | A method of high-strength carbonization building materials are prepared using slag micro powder |
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|---|---|
| CN100577331C (en) | 2010-01-06 |
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Owner name: JINAN LUXIN NEW MATERIALS CO., LTD. Free format text: FORMER OWNER: BAODE CHARGING STOCK CO., LTD., JINAN Effective date: 20100720 |
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Free format text: CORRECT: ADDRESS; FROM: 250109 GUODIAN TOWN, LICHENG DISTRICT, JINAN CITY, SHANDONG PROVINCE TO: 250109 SOUTHEAST OF GUODIAN TOWN GOVERNMENT, LICHENG DISTRICT, JINAN CITY, SHANDONG PROVINCE |
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Effective date of registration: 20100720 Address after: 250109, Shandong Province, Ji'nan province Zhen Guo Zhen government on the east side of the South Patentee after: Jinan Luxin New Materials Co., Ltd. Address before: 250109 Guodian Town, Licheng District, Shandong, Ji'nan Patentee before: Baode Charging Stock Co., Ltd., Jinan |
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Granted publication date: 20100106 Termination date: 20140321 |