CN104988275A - High-performance furnace slag regulator for revolving furnace slag sputtering furnace protection - Google Patents
High-performance furnace slag regulator for revolving furnace slag sputtering furnace protection Download PDFInfo
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- CN104988275A CN104988275A CN201510410495.XA CN201510410495A CN104988275A CN 104988275 A CN104988275 A CN 104988275A CN 201510410495 A CN201510410495 A CN 201510410495A CN 104988275 A CN104988275 A CN 104988275A
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Abstract
The invention discloses a high-performance furnace slag regulator for revolving furnace slag sputtering furnace protection. The high-performance furnace slag regulator comprises the following ingredients in parts by mass: 56 to 60 parts of MgO, 20 to 25 parts of C and 3 to 5 parts of bonding agents. The regulator is required to be in a sphere shape with the granularity being 10 to 15mm, the powder rate is lower than or equal to 3 percent, and the moisture content is lower than or equal to 0.8 percent. The bonding agent comprises the following ingredients in parts by weight: 25 to 30 percent of nanometer montmorillonite silicates, 5 to 10 percent of fine-grained Al2O3, 5 to 10 percent of molybdenum disulfide, 1 to 5 percent of zinc oxide, 3 to 6 percent of talcum powder, 20 to 36 percent of curing agents, 5 to 10 percent of thickening agents and 5 to 10 percent of ethyl cellulose. The high-performance furnace slag regulator for revolving furnace slag sputtering furnace protection designed by the invention has the advantages that the slag sputtering furnace protection effect of a revolving furnace for generating high-oxidability furnace slag through smelting high-added-value steel can be obviously improved, so that the service life of a furnace liner of the revolving furnace is greatly prolonged.
Description
Technical field
The present invention relates to the technical field of slag splashing, particularly a kind of high-performance slag adjusting agent for splashing slag in converter.
Background technology
Technology of Slag Splashingfor Furnace Maintenance utilizes content of MgO to reach capacity or oversaturated steel-making terminal slag, spattered, cool, is set in furnace lining and forms the dystectic molten slag layer of one deck on the surface by blowing of high pressure N2, and bond well with furnace lining and adhere to; Spatter that slag formed to spatter slag blanket solidity to corrosion better; the oxidation and decarbonization on backup lining brick surface can be suppressed simultaneously; the water eroding and flooding of high temperature sludge to backup lining brick can be alleviated again; thus protection backup lining brick, reduce refractory wear speed, reduce gunning material consumption; alleviate labor strength simultaneously; improve furnace lining work-ing life, improve converter operating rate, reduce production cost.
Slag splashing is the new technology in a raising furnace life of developing in recent years; This technology is the big lake subsidiary factory in republicanism steel company of the U.S. at first, is developed by Praxair gas company limited, after big lake subsidiary factory and subsidiary factory of lattice Leng Nayete city implement, is not promoted; L991, the Indiana Ha Bao factory (1ndianaHabor) of LTV company of the U.S. is with spattering the part of slag as comprehensive furnace retaining.In September, 1994, the lining life of this factory 232t top blown converter reached 15658 stoves, and Gunning refractory consumption drops to 0.38kg/t steel, Gunning refractory cost savings 66%, and converter operating rate brings up to 97% of l994 by 78% of l984; Afterwards, the U.S. has more than 15 steel mills to adopt this technology, and U.S. inland steel company furnace life, Canada, Britain, Japan etc. also dropped into test and application in succession more than 20000 stoves.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of prior art, a kind of high-performance slag adjusting agent for splashing slag in converter is provided, obviously can improve and smelt the slag splashing effect that high added value steel grade produces the converter of high oxidative slag, the lining life of converter is increased substantially.
In order to solve above technical problem, the invention provides a kind of high-performance slag adjusting agent for splashing slag in converter, its each components in mass portion number meter comprises: MgO:56-60 part, C:20-25 part, binding agent: 3-5 part, adjusting agent is granularity requirements is the spherical of 10-15mm, and powder face rate≤3%, water ratio≤0.8%;
Binding agent comprises following component according to the mass fraction:
Nano montmorillonite class silicate: 25-30%, fine-grained alumina: 5-10%, molybdenumdisulphide: 5-10%, zinc oxide: 1-5%, talcum powder: 3-6%, solidifying agent: 20-36%, thickening material: 5-10%, Natvosol: 5-10%;
Thickening material comprises: diatomite: 25%, sodium bentonite: 15%, urethane: 20%, polyvinyl alcohol: 30%, polyacrylamide: 10%; Solidifying agent is diethylenetriamine: 10%, mphenylenediamine: 20%, DMP-30/ polyamide 6 50:30%, phenol aldehyde modified amine: 25%, diamino-diphenyl MSM DDS:15%.
Technique effect: due to the restriction of MgO, C and binder content in the present invention, obviously can improve and smelt the slag splashing effect that high added value steel grade produces the converter of high oxidative slag, the lining life of converter is increased substantially;
Nano montmorillonite class silicate is selected to have unique laminate structure in the present invention, energy transmit or or scatter and disappear process in pass laminate structure, the transmission speed of energy will be slowed down and change the bang path of energy, nano montmorillonite class silicate thermal conductivity is extremely low simultaneously, suppress transmission ofenergy, it can bring beyond thought technique effect equally in environmental protection and energy saving field;
Nano montmorillonite class silicate consumption in use is also more crucial, although nanometer materials have extremely strong heat-insulation and heat-preservation function, but due to the constructional feature that it is special, coating in use its stain resistant have received very large impact, so, control nano montmorillonite class silicate 25-30% in binding agent in the present invention, solve the problem of stain resistant;
Molybdenumdisulphide is adopted to make it easily produce slippage due to distinctive crystalline structure in isolation-type functional stuffing, talcum powder can play skeleton function, reduces manufacturing cost, increases the stable of shape of product, increase tensile strength, shearing resistance, flexing intensity, pressure intensity, reduce distortion, extension rate, thermal expansivity, the features such as epigranular dispersiveness is strong.
The technical scheme that the present invention limits further is:
Further, the aforesaid high-performance slag adjusting agent for splashing slag in converter, its each component comprises by quality % number: MgO:58 part, C:22 part, binding agent: 4 parts, adjusting agent is granularity requirements is the spherical of 11mm, and powder face rate≤3%, water ratio≤0.8%;
Binding agent comprises following component according to the mass fraction:
Nano montmorillonite class silicate: 28%, fine-grained alumina: 5%, molybdenumdisulphide: 8%, zinc oxide: 3%, talcum powder: 5%, solidifying agent: 36%, thickening material: 10%, Natvosol: 5%;
Thickening material comprises: diatomite: 25%, sodium bentonite: 15%, urethane: 20%, polyvinyl alcohol: 30%, polyacrylamide: 10%; Solidifying agent is diethylenetriamine: 10%, mphenylenediamine: 20%, DMP-30/ polyamide 6 50:30%, phenol aldehyde modified amine: 25%, diamino-diphenyl MSM DDS:15%.
The aforesaid high-performance slag adjusting agent for splashing slag in converter, its each components in mass portion number meter comprises: MgO:59 part, C:24 part, binding agent: 5 parts, and adjusting agent is granularity requirements is the spherical of 12mm, and powder face rate≤3%, water ratio≤0.8%;
Binding agent comprises following component according to the mass fraction:
Nano montmorillonite class silicate: 26%, fine-grained alumina: 6%, molybdenumdisulphide: 8%, zinc oxide: 4%, talcum powder: 4%, solidifying agent: 36%, thickening material: 8%, Natvosol: 8%;
Thickening material comprises: diatomite: 25%, sodium bentonite: 15%, urethane: 20%, polyvinyl alcohol: 30%, polyacrylamide: 10%; Solidifying agent is diethylenetriamine: 10%, mphenylenediamine: 20%, DMP-30/ polyamide 6 50:30%, phenol aldehyde modified amine: 25%, diamino-diphenyl MSM DDS:15%.
The present invention have also been devised a kind of preparation method of the high-performance slag adjusting agent for splashing slag in converter, comprises following concrete steps:
to choose calcining coal powder that carbon content is 75-80% and content of MgO be the light-burning magnesium powder of 85-90% is raw material, respectively calcining coal powder, light-burning magnesium powder is ground into the fine powder of below 20 orders through Raymond machine;
according to calcining coal fine powder: magnesia unslacked fine powder is that the stirrer that the ratio of 3:7 puts into specification 750 planet stirs, and batch mixing terminates in rear input pan-pelletizer;
by binding agent in binding agent: water is obtain solution in the ratio dissolved water of 1:6, solution is sprayed into pan-pelletizer by compartment, the angle of spraying is 25-30 °, interval time is 1.2-1.5 second, each injection flow is the 15-20% of pan-pelletizer volume, bond together after contact raw solution, pan-pelletizer rotates balling-up; Employing compartment sprays, and ensure that in globulation the even adhesion of expecting thing, and the angle of injection, interval time, injection flow all ensure that the raising greatly of ball-formation quality.
moist spheroid is put into fixer, naturally takes care of health 72 hours, when spheroid water % is evaporated to below 2%, namely an input roars of laughter dry equipment roars of laughter solid carbon dioxide point packaging obtains.
The present invention have also been devised a kind of protecting method with splash slag of the high-performance slag adjusting agent for splashing slag in converter, after converter has gone out steel, slag is left in converter, nitrogen is blown into furnace roof oxygen rifle, after furnace roof oxygen rifle starts to be blown into nitrogen in stove, in converter, add slag adjusting agent, the terminal slag of converter steelmaking is splash being bonded on furnace wall, thus slag blanket is spattered in formation.
Embodiment
embodiment 1
A kind of high-performance slag adjusting agent for splashing slag in converter that the present embodiment provides, its each component comprises by quality % number: MgO:58 part, C:22 part, binding agent: 4 parts, adjusting agent is granularity requirements is the spherical of 11mm, and powder face rate≤3%, water ratio≤0.8%;
Binding agent comprises following component according to the mass fraction:
Nano montmorillonite class silicate: 28%, fine-grained alumina: 5%, molybdenumdisulphide: 8%, zinc oxide: 3%, talcum powder: 5%, solidifying agent: 36%, thickening material: 10%, Natvosol: 5%;
Thickening material comprises: diatomite: 25%, sodium bentonite: 15%, urethane: 20%, polyvinyl alcohol: 30%, polyacrylamide: 10%; Solidifying agent is diethylenetriamine: 10%, mphenylenediamine: 20%, DMP-30/ polyamide 6 50:30%, phenol aldehyde modified amine: 25%, diamino-diphenyl MSM DDS:15%.
Its preparation method comprises following concrete steps:
to choose calcining coal powder that carbon content is 75-80% and content of MgO be the light-burning magnesium powder of 85-90% is raw material, respectively calcining coal powder, light-burning magnesium powder is ground into the fine powder of below 20 orders through Raymond machine;
according to calcining coal fine powder: magnesia unslacked fine powder is that the stirrer that the ratio of 3:7 puts into specification 750 planet stirs, and batch mixing terminates in rear input pan-pelletizer;
by binding agent in binding agent: water is obtain solution in the ratio dissolved water of 1:6, solution is sprayed into pan-pelletizer by compartment, the angle of spraying is 25-30 °, interval time is 1.2-1.5 second, each injection flow is the 15-20% of pan-pelletizer volume, bond together after contact raw solution, pan-pelletizer rotates balling-up;
moist spheroid is put into fixer, naturally takes care of health 72 hours, when spheroid water % is evaporated to below 2%, namely an input roars of laughter dry equipment roars of laughter solid carbon dioxide point packaging obtains.
embodiment 2
A kind of high-performance slag adjusting agent for splashing slag in converter that the present embodiment provides, its each components in mass portion number meter comprises: MgO:59 part, C:24 part, binding agent: 5 parts, adjusting agent is granularity requirements is the spherical of 12mm, and powder face rate≤3%, water ratio≤0.8%;
Binding agent comprises following component according to the mass fraction:
Nano montmorillonite class silicate: 26%, fine-grained alumina: 6%, molybdenumdisulphide: 8%, zinc oxide: 4%, talcum powder: 4%, solidifying agent: 36%, thickening material: 8%, Natvosol: 8%;
Thickening material comprises: diatomite: 25%, sodium bentonite: 15%, urethane: 20%, polyvinyl alcohol: 30%, polyacrylamide: 10%; Solidifying agent is diethylenetriamine: 10%, mphenylenediamine: 20%, DMP-30/ polyamide 6 50:30%, phenol aldehyde modified amine: 25%, diamino-diphenyl MSM DDS:15%.
Its preparation method comprises following concrete steps:
to choose calcining coal powder that carbon content is 75-80% and content of MgO be the light-burning magnesium powder of 85-90% is raw material, respectively calcining coal powder, light-burning magnesium powder is ground into the fine powder of below 20 orders through Raymond machine;
according to calcining coal fine powder: magnesia unslacked fine powder is that the stirrer that the ratio of 3:7 puts into specification 750 planet stirs, and batch mixing terminates in rear input pan-pelletizer;
by binding agent in binding agent: water is obtain solution in the ratio dissolved water of 1:6, solution is sprayed into pan-pelletizer by compartment, the angle of spraying is 25-30 °, interval time is 1.2-1.5 second, each injection flow is the 15-20% of pan-pelletizer volume, bond together after contact raw solution, pan-pelletizer rotates balling-up;
moist spheroid is put into fixer, naturally takes care of health 72 hours, when spheroid water % is evaporated to below 2%, namely an input roars of laughter dry equipment roars of laughter solid carbon dioxide point packaging obtains.
embodiment 3
The protecting method with splash slag of a kind of high-performance slag adjusting agent for splashing slag in converter that the present embodiment provides, after converter has gone out steel, slag is left in converter, nitrogen is blown into furnace roof oxygen rifle, after furnace roof oxygen rifle starts to be blown into nitrogen in stove, in converter, add slag adjusting agent, the terminal slag of converter steelmaking is splash being bonded on furnace wall, thus slag blanket is spattered in formation.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (5)
1. for a high-performance slag adjusting agent for splashing slag in converter, it is characterized in that, its each components in mass portion number meter comprises: MgO:56-60 part, C:20-25 part, binding agent: 3-5 part, described adjusting agent is granularity requirements is the spherical of 10-15mm, and powder face rate≤3%, water ratio≤0.8%;
Described binding agent comprises following component according to the mass fraction:
Nano montmorillonite class silicate: 25-30%, fine-grained alumina: 5-10%, molybdenumdisulphide: 5-10%, zinc oxide: 1-5%, talcum powder: 3-6%, solidifying agent: 20-36%, thickening material: 5-10%, Natvosol: 5-10%;
Described thickening material comprises: diatomite: 25%, sodium bentonite: 15%, urethane: 20%, polyvinyl alcohol: 30%, polyacrylamide: 10%; Described solidifying agent is diethylenetriamine: 10%, mphenylenediamine: 20%, DMP-30/ polyamide 6 50:30%, phenol aldehyde modified amine: 25%, diamino-diphenyl MSM DDS:15%.
2. the high-performance slag adjusting agent for splashing slag in converter according to claim 1, it is characterized in that, its each component comprises by quality % number: MgO:58 part, C:22 part, binding agent: 4 parts, described adjusting agent is granularity requirements is the spherical of 11mm, and powder face rate≤3%, water ratio≤0.8%;
Described binding agent comprises following component according to the mass fraction:
Nano montmorillonite class silicate: 28%, fine-grained alumina: 5%, molybdenumdisulphide: 8%, zinc oxide: 3%, talcum powder: 5%, solidifying agent: 36%, thickening material: 10%, Natvosol: 5%;
Described thickening material comprises: diatomite: 25%, sodium bentonite: 15%, urethane: 20%, polyvinyl alcohol: 30%, polyacrylamide: 10%; Described solidifying agent is diethylenetriamine: 10%, mphenylenediamine: 20%, DMP-30/ polyamide 6 50:30%, phenol aldehyde modified amine: 25%, diamino-diphenyl MSM DDS:15%.
3. the high-performance slag adjusting agent for splashing slag in converter according to claim 1, it is characterized in that, its each components in mass portion number meter comprises: MgO:59 part, C:24 part, binding agent: 5 parts, described adjusting agent is granularity requirements is the spherical of 12mm, and powder face rate≤3%, water ratio≤0.8%;
Described binding agent comprises following component according to the mass fraction:
Nano montmorillonite class silicate: 26%, fine-grained alumina: 6%, molybdenumdisulphide: 8%, zinc oxide: 4%, talcum powder: 4%, solidifying agent: 36%, thickening material: 8%, Natvosol: 8%;
Described thickening material comprises: diatomite: 25%, sodium bentonite: 15%, urethane: 20%, polyvinyl alcohol: 30%, polyacrylamide: 10%; Described solidifying agent is diethylenetriamine: 10%, mphenylenediamine: 20%, DMP-30/ polyamide 6 50:30%, phenol aldehyde modified amine: 25%, diamino-diphenyl MSM DDS:15%.
4. the preparation method of the high-performance slag adjusting agent for splashing slag in converter according to claim 1, is characterized in that, comprise following concrete steps:
to choose calcining coal powder that carbon content is 75-80% and content of MgO be the light-burning magnesium powder of 85-90% is raw material, respectively calcining coal powder, light-burning magnesium powder is ground into the fine powder of below 20 orders through Raymond machine;
according to calcining coal fine powder: magnesia unslacked fine powder is that the stirrer that the ratio of 3:7 puts into specification 750 planet stirs, and batch mixing terminates in rear input pan-pelletizer;
by binding agent in binding agent: water is obtain solution in the ratio dissolved water of 1:6, solution is sprayed into pan-pelletizer by compartment, the angle of spraying is 25-30 °, interval time is 1.2-1.5 second, each injection flow is the 15-20% of pan-pelletizer volume, bond together after contact raw solution, pan-pelletizer rotates balling-up;
moist spheroid is put into fixer, naturally takes care of health 72 hours, when spheroid water % is evaporated to below 2%, namely an input roars of laughter dry equipment roars of laughter solid carbon dioxide point packaging obtains.
5. the protecting method with splash slag of the high-performance slag adjusting agent for splashing slag in converter according to claim 1, it is characterized in that, after converter has gone out steel, slag is left in converter, be blown into nitrogen with furnace roof oxygen rifle, after furnace roof oxygen rifle starts to be blown into nitrogen in stove, in converter, add slag adjusting agent, the terminal slag of converter steelmaking is splash and is bonded on furnace wall, thus slag blanket is spattered in formation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385803A (en) * | 2015-11-20 | 2016-03-09 | 武汉钢铁(集团)公司 | Converter final slag modifier and preparing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099469A (en) * | 2014-06-26 | 2014-10-15 | 武汉钢铁(集团)公司 | Resource utilization method of waste magnesia powder after treating oriented silicon steel |
| CN104212289A (en) * | 2014-09-17 | 2014-12-17 | 江苏海晟涂料有限公司 | Outer-wall insulated coating with nano silicate fillers and preparation method of outer-wall insulated coating |
| CN104289395A (en) * | 2014-09-17 | 2015-01-21 | 江苏海晟涂料有限公司 | External wall coating process for silicon salt padding external wall thermal insulating coating building |
-
2015
- 2015-07-14 CN CN201510410495.XA patent/CN104988275A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099469A (en) * | 2014-06-26 | 2014-10-15 | 武汉钢铁(集团)公司 | Resource utilization method of waste magnesia powder after treating oriented silicon steel |
| CN104212289A (en) * | 2014-09-17 | 2014-12-17 | 江苏海晟涂料有限公司 | Outer-wall insulated coating with nano silicate fillers and preparation method of outer-wall insulated coating |
| CN104289395A (en) * | 2014-09-17 | 2015-01-21 | 江苏海晟涂料有限公司 | External wall coating process for silicon salt padding external wall thermal insulating coating building |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385803A (en) * | 2015-11-20 | 2016-03-09 | 武汉钢铁(集团)公司 | Converter final slag modifier and preparing method |
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Application publication date: 20151021 |
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