CN104193375B - A kind of blast furnace skimming equipment bonding agent - Google Patents
A kind of blast furnace skimming equipment bonding agent Download PDFInfo
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- CN104193375B CN104193375B CN201410455566.3A CN201410455566A CN104193375B CN 104193375 B CN104193375 B CN 104193375B CN 201410455566 A CN201410455566 A CN 201410455566A CN 104193375 B CN104193375 B CN 104193375B
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Abstract
The invention discloses a kind of blast furnace skimming equipment bonding agent, belong to the bonding agent technical field of slag sluicing system equipment in blast furnace casting process.A kind of blast furnace skimming equipment bonding agent of the present invention, is made up of pitch, maleated rosin, guar gum, polyurethane(s), polyvinyl alcohol, ethylhexyl dihydrogen phosphate, cellulose acetate, butyl acrylate and melon glue.A kind of blast furnace skimming equipment bonding agent of the present invention, by creationary component proportion, makes skimming equipment after it being mixed with refractory aggregate, such that the intensity enhancing of the skimming equipment made, thermoplasticity are high, good stability; Improve the work-ing life of skimming equipment, greatly reduce the labour intensity of stokehold, ensure that conditions of blast furnace is stablized and direct motion preferably, reduce further the smelting cost of iron and steel enterprise.
Description
Technical field
The present invention relates to the bonding agent technical field of slag sluicing system equipment in blast furnace casting process, more particularly, relate to a kind of blast furnace skimming equipment bonding agent.
Background technology
Blast furnace ironmaking is most widely used iron-smelting process, and mix through the high temperature liquid iron of blast-furnace smelting and slag and flowed out by iron mouth, molten iron is being transported to converter station by hot metal ladle, torpedo tank car after blast furnace casting, carries out converter steelmaking.In order to prevent the objectionable constituent in slag from again entering molten iron, in the process of blast furnace casting, slag sluicing system equipment is needed to be separated high temperature sludge iron.In prior art, the main slag sluicing system equipment adopted is skimmer, is also called sand mouth; Skimmer connects main trough of blast furnace, under connect iron runner, bypass connects slag runner, and in the process of tapping a blast furnace, the slag in main iron hook and molten iron are because of the different natural layering of its density.Slag floats over above molten iron because density is little, is blocked rear then flow to slag runner by skimmer; Molten iron because of below its density sinks to greatly, and flows to iron runner by the gap between skimmer and main iron hook.Realize the slag of high-temperature liquid state, effective separation of iron in process of tapping a blast furnace.Skimmer is in core node position on casting house, is the exclusive node ensureing that slag iron is effectively separated, and is the device promoting that in blast furnace casting process, high-temperature liquid furnace slag, molten iron are effectively separated.
But undergo the mechanical erosion of high temperature liquid iron in skimmer process under arms, the chemical erosion of high temperature furnace slag and intermittent thermal shock are corroded.And three kinds of factor alternating actions, mutually strengthen, greatly reduce the service life of skimmer.The bonding agent of existing skimmer is made up of materials such as pitches, due to the component imperfection of skimmer bonding agent, make the antiscour of skimmer, corrosion resistance, antistrip performance and thermal shock resistance poor, make to only have 1-2 month the work-ing life of skimmer, and often within 10-15 days, just need feed supplement once.The frequent repairing of skimmer, usually affects and taps a blast furnace on schedule, causes the checking underproduction, and coke ratio raises.
The work-ing life of existing skimmer is shorter, repairing is frequent, directly affects blast furnace and taps a blast furnace on schedule, extend molten iron and deposit the stove time, not only increase a ton iron cost, bring heavy economical load to iron and steel enterprise, and bring serious potential safety hazard.Therefore, need badly and improve preparation skimming equipment bonding agent used, thus improve the work-ing life of skimming equipment.
Through patent retrieval, there is relevant technical scheme open.As: a kind of blast-furnace iron runner skimmer precast lintel (CN200910143657.2, Shen Qing Publication day: 2010-12-01), lintel refractory castable is prefabricated forms for it, and come into operation after overbaking, prefabricated component top future insufficiency, the problem that although this application case prevents precast lintel in use causes top tension to ftracture because bottom expanded by heating is elongated, extend skimmer work-ing life, but this application case only improves the structure of skimmer, it is not grouped into the one-tenth of the bonding agent of skimming equipment and improves, therefore, the service life of skimming equipment needs to be improved further.
Summary of the invention
1. invent the technical problem that will solve
The object of the invention is to overcome skimming service life of equipment in prior art short, repairing, the deficiency that replacement frequency is large, provide a kind of blast furnace skimming equipment bonding agent, skimming equipment bonding agent of the present invention is by creationary feed composition proportioning, the skimming equipment intensity that itself and refractory aggregate are made is high, and thermoplasticity is high, good stability, improve the work-ing life of skimming equipment, provide safeguard for blast furnace taps a blast furnace on schedule.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
A kind of blast furnace skimming equipment bonding agent of the present invention, described bonding agent comprises pitch, maleated rosin, guar gum, polyurethane(s) and polyvinyl alcohol component.
Further, each component of described bonding agent is by following mass parts composition:
Further, described bonding agent also comprises ethylhexyl dihydrogen phosphate, cellulose acetate, butyl acrylate and melon glue component.
Further, each component of described bonding agent is by following mass parts composition:
This bonding agent is only made up of pitch, maleated rosin, guar gum, polyurethane(s), polyvinyl alcohol, ethylhexyl dihydrogen phosphate, cellulose acetate, butyl acrylate and melon glue component.
Further, each component of described bonding agent is by following mass parts composition:
3. beneficial effect
Adopt technical scheme provided by the invention, compared with existing known technology, there is following unusual effect:
A kind of blast furnace skimming equipment bonding agent of the present invention, the pitch that its bonding agent adopts is pelletted pitch, higher carbon content is utilized to improve the erosion-resisting characteristics of skimming equipment, and carbon element residual more in skimming equipment space, make skimming equipment finer and close;
In addition, creationaryly in bonding agent allocate maleated rosin, guar gum, polyurethane(s), ethylhexyl dihydrogen phosphate, polyvinyl alcohol, cellulose acetate, butyl acrylate and melon glue into, substantially increase cohesiveness and the plasticity of bonding agent, make skimming equipment after it being mixed with refractory aggregate, such that the intensity enhancing of the skimming equipment made, thermoplasticity are high, good stability; Improve the work-ing life of skimming equipment, greatly reduce the labour intensity of stokehold, ensure that conditions of blast furnace is stablized and direct motion preferably, reduce further the smelting cost of iron and steel enterprise.
Embodiment
For understanding content of the present invention further, below in conjunction with embodiment, the invention will be further described.
Embodiment 1
A kind of blast furnace skimming equipment bonding agent of the present embodiment, each component is by following mass parts composition: pitch 150kg, maleated rosin 30kg, guar gum 12kg, polyurethane(s) 9kg, polyvinyl alcohol 12kg, ethylhexyl dihydrogen phosphate 2kg, cellulose acetate 18kg, butyl acrylate 5kg and melon glue 1kg.What deserves to be explained is, described pitch is pelletted pitch, utilizes higher carbon content to improve the erosion-resisting characteristics of skimming equipment, and carbon element residual more in skimming equipment space, make skimming equipment finer and close; Described polyurethane(s) is containing the general designation of macromolecular cpd repeating carbamate groups on main chain, and it is formed by organic diisocyanate or polyisocyanates and dihydroxyl or polyol addition polymerization.
In addition, be necessary to illustrate, above-mentioned maleated rosin, also known as maleic rosin, is the product that rosin and maleic anhydride (cis-butenedioic anhydride) carry out addition reaction gained, and the present embodiment maleated rosin used is 115# maleated rosin.Above-mentioned polyvinyl alcohol is white solid powder, and its molecular-weight average is 185000-190000.
In addition, the cellulose acetate of the present embodiment is the natural high polymer of the chemical modification obtained after hydroxyl acetic acid esterified in cellulosic molecule, and acetyl content is 39%.Described guar gum is high molecular weight water soluble polymer, and its chemical name is guar hydroxypropyltrimonium ammonium chloride.
A kind of blast furnace skimming equipment bonding agent of the present embodiment, its concrete preparation method is as follows:
Step one: prepare mixture A
Take pitch 150kg by mass fraction, maleated rosin 30kg, guar gum 12kg and polyurethane(s) 9kg, joins in stirrer successively, and stirs 40min, and stirrer rotating speed is 200r/min, mixes rear obtained mixture A;
Step 2: prepare mixture B
(1) above-mentioned obtained mixture A is joined in reactor, be first warming up to 50 DEG C, then with the heat-up rate intensification 10min of 1 DEG C/min, be warming up to 60 DEG C, insulation 20min;
(2) at the temperature of 60 DEG C, 30min is uniformly mixed, first with the heat-up rate intensification 10min of 1 DEG C/min, insulation 15min, then with the heat-up rate intensification 5min of 2 DEG C/min, be warming up to 80 DEG C, insulation 10min;
(3) by mass fraction weighing polyvinyl alcohol 12kg and ethylhexyl dihydrogen phosphate 2kg, join in reactor, insulation 20min, and stir 20min, mix rear obtained mixture B;
Step 3: preparation mixture C
Take cellulose acetate 18kg by mass fraction, butyl acrylate 5kg and melon glue 1kg, join in stirrer successively, and stir 20min, stirrer rotating speed is 250r/min, mixes rear obtained mixture C;
Step 4: be mixed with bonding agent
Obtained mixture C joined in mixture B, insulation 10min, with 0.5 DEG C/min intensification 20min, is warming up to 90 DEG C, and continues to stir 40min, mixes to obtain bonding agent.
A kind of blast furnace skimming equipment bonding agent of the present embodiment, the pitch that bonding agent adopts is pelletted pitch, higher carbon content is utilized to improve the erosion-resisting characteristics of skimming equipment, and carbon element residual more in the space of skimming equipment, make skimming equipment finer and close.
In addition, creationaryly in bonding agent allocate maleated rosin, guar gum, polyurethane(s), ethylhexyl dihydrogen phosphate, polyvinyl alcohol, cellulose acetate, butyl acrylate and melon glue into, substantially increase cohesiveness and the plasticity of bonding agent, after it mixes with refractory aggregate, make skimming equipment carrying out baking, the skimming equipment intensity made is high, thermoplasticity is high, good stability; Improve the work-ing life of skimming equipment, not only greatly reduce the labour intensity of stokehold, and provide safeguard for blast furnace taps a blast furnace on schedule, ensure that conditions of blast furnace is stablized and direct motion preferably.Use skimming equipment prepared by this bonding agent, the work-ing life when not repairing is in table 1.
Embodiment 2
The substance of the present embodiment is with embodiment 1, its difference is: each component of bonding agent of the present embodiment forms by following mass parts: pitch 130kg, maleated rosin 25kg, guar gum 11kg, polyurethane(s) 7kg, polyvinyl alcohol 10kg, ethylhexyl dihydrogen phosphate 1kg, cellulose acetate 15kg, butyl acrylate 4kg and melon glue 1kg.
A kind of blast furnace skimming equipment bonding agent of the present embodiment, its concrete preparation method is as follows:
Step one: prepare mixture A
Take pitch 130kg by mass fraction, maleated rosin 25kg, guar gum 11kg and polyurethane(s) 7kg, joins in stirrer successively, and stirs 40min, and stirrer rotating speed is 200r/min, mixes rear obtained mixture A;
Step 2: prepare mixture B
(1) above-mentioned obtained mixture A is joined in reactor, be first warming up to 50 DEG C, then with the heat-up rate intensification 10min of 1 DEG C/min, be warming up to 60 DEG C, insulation 20min;
(2) at the temperature of 60 DEG C, 30min is uniformly mixed, first with the heat-up rate intensification 10min of 1 DEG C/min, insulation 15min, then with the heat-up rate intensification 5min of 2 DEG C/min, be warming up to 80 DEG C, insulation 10min;
(3) by mass fraction weighing polyvinyl alcohol 10kg and ethylhexyl dihydrogen phosphate 1kg, join in reactor, insulation 20min, and stir 20min, mix rear obtained mixture B;
Step 3: preparation mixture C
Take cellulose acetate 15kg by mass fraction, butyl acrylate 4kg and melon glue 1kg, join in stirrer successively, and stir 20min, stirrer rotating speed is 250r/min, mixes rear obtained mixture C;
Step 4: be mixed with bonding agent
Obtained mixture C joined in mixture B, insulation 10min, with the heat-up rate intensification 20min of 0.5 DEG C/min, is warming up to 90 DEG C, and continues to stir 40min, mixes to obtain bonding agent.
A kind of blast furnace skimming equipment bonding agent of the present embodiment, the pitch that bonding agent adopts is pelletted pitch, higher carbon content is utilized to improve the erosion-resisting characteristics of skimming equipment, and carbon element residual more in the space of skimming equipment, make skimming equipment finer and close.
In addition, creationaryly in bonding agent allocate maleated rosin, guar gum, polyurethane(s), ethylhexyl dihydrogen phosphate, polyvinyl alcohol, cellulose acetate, butyl acrylate and melon glue into, substantially increase cohesiveness and the plasticity of bonding agent, after it mixes with refractory aggregate, make skimming equipment carrying out baking, the skimming equipment intensity made is high, thermoplasticity is high, good stability; Improve the work-ing life of skimming equipment, not only greatly reduce the labour intensity of stokehold, and provide safeguard for blast furnace taps a blast furnace on schedule, ensure that conditions of blast furnace is stablized and direct motion preferably.Use skimming equipment prepared by this bonding agent, the work-ing life when not repairing is in table 1.
Embodiment 3
The substance of the present embodiment is with embodiment 1, its difference is: each component of bonding agent of the present embodiment forms by following mass parts: pitch 120kg, maleated rosin 20kg, guar gum 10kg, polyurethane(s) 4kg, polyvinyl alcohol 8kg, ethylhexyl dihydrogen phosphate 1kg, cellulose acetate 10kg, butyl acrylate 4kg and melon glue 1kg.
A kind of blast furnace skimming equipment bonding agent of the present embodiment, its concrete preparation method is as follows:
Step one: prepare mixture A
Take pitch 120kg by mass fraction, maleated rosin 20kg, guar gum 10kg and polyurethane(s) 4kg, joins in stirrer successively, and stirs 40min, and stirrer rotating speed is 200r/min, mixes rear obtained mixture A;
Step 2: prepare mixture B
(1) above-mentioned obtained mixture A is joined in reactor, be first warming up to 50 DEG C, then with the heat-up rate intensification 10min of 1 DEG C/min, be warming up to 60 DEG C, insulation 20min;
(2) at the temperature of 60 DEG C, 30min is uniformly mixed, first with the heat-up rate intensification 10min of 1 DEG C/min, insulation 15min, then with the heat-up rate intensification 5min of 2 DEG C/min, be warming up to 80 DEG C, insulation 10min;
(3) by mass fraction weighing polyvinyl alcohol 8kg and ethylhexyl dihydrogen phosphate 1kg, join in reactor, insulation 20min, and stir 20min, mix rear obtained mixture B;
Step 3: preparation mixture C
Take cellulose acetate 10kg by mass fraction, butyl acrylate 4kg and melon glue 1kg, join in stirrer successively, and stir 20min, stirrer rotating speed is 250r/min, mixes rear obtained mixture C;
Step 4: be mixed with bonding agent
Obtained mixture C joined in mixture B, insulation 10min, with the heat-up rate intensification 20min of 0.5 DEG C/min, is warming up to 90 DEG C, and continues to stir 40min, mixes to obtain bonding agent.
A kind of blast furnace skimming equipment bonding agent of the present embodiment, the pitch that bonding agent adopts is pelletted pitch, higher carbon content is utilized to improve the erosion-resisting characteristics of skimming equipment, and carbon element residual more in the space of skimming equipment, make skimming equipment finer and close.
In addition, creationaryly in bonding agent allocate maleated rosin, guar gum, polyurethane(s), ethylhexyl dihydrogen phosphate, polyvinyl alcohol, cellulose acetate, butyl acrylate and melon glue into, substantially increase cohesiveness and the plasticity of bonding agent, after it mixes with refractory aggregate, make skimming equipment carrying out baking, the skimming equipment intensity made is high, thermoplasticity is high, good stability; Improve the work-ing life of skimming equipment, not only greatly reduce the labour intensity of stokehold, and provide safeguard for blast furnace taps a blast furnace on schedule, ensure that conditions of blast furnace is stablized and direct motion preferably.Use skimming equipment prepared by this bonding agent, the work-ing life when not repairing is in table 1.
The work-ing life of skimming equipment when not repairing prepared by the bonding agent of table 1 embodiment 1-3
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Existing sand mouth | |
| Work-ing life (my god) | 32 days | 34 days | 29 days | 10-15 days |
After bonding agent of the present invention mixes with refractory aggregate, make skimming equipment carrying out baking, improve the work-ing life of skimming equipment, greatly reduce the labour intensity of stokehold, provide safeguard for blast furnace taps a blast furnace on schedule, ensure that conditions of blast furnace is stablized and direct motion preferably, reduce further the smelting cost of iron and steel enterprise.
Claims (2)
1. a blast furnace skimming equipment bonding agent, is characterized in that: each component of described bonding agent forms by following mass parts:
This bonding agent is only made up of pitch, maleated rosin, guar gum, polyurethane(s), polyvinyl alcohol, ethylhexyl dihydrogen phosphate, cellulose acetate, butyl acrylate and melon glue component.
2. a kind of blast furnace skimming equipment bonding agent according to claim 1, is characterized in that: each component of described bonding agent forms by following mass parts:
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| CN1847318A (en) * | 2005-04-06 | 2006-10-18 | 许政道 | Compositions and manufacturing methods of bitumen modifiers having complex functionality |
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| CN1847318A (en) * | 2005-04-06 | 2006-10-18 | 许政道 | Compositions and manufacturing methods of bitumen modifiers having complex functionality |
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Effective date of registration: 20171120 Address after: 401120 Chongqing city Yubei District Shuangfeng Bridge Street, Airport Road No. 7 Building 3 buildings Patentee after: Chongqing Beijing Great Automotive Components Company Limited Address before: Anhui province Ma'anshan City Road 243000 at Cihu hi tech Industrial Development Zone No. 42 Patentee before: Wu Xuejian |
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Effective date of registration: 20201112 Address after: Da Yu Zhen Xiang Tai Cun, Rudong County, Nantong City, Jiangsu Province Patentee after: Rudong Huanghai water conservancy construction engineering company Address before: 401120 No. 7, East Airport Road, Shuangfengqiao Street, Yubei District, Chongqing Patentee before: Chongqing Beijing Great Automotive Components Co.,Ltd. |
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Effective date of registration: 20211028 Address after: 226400 No.8, wisdom Avenue, Donghu scenic area, Dayu Town, Rudong County, Nantong City, Jiangsu Province Patentee after: Nantong Donghu International Travel Agency Co., Ltd Address before: 226400 Xiangtai village, Dayu Town, Rudong County, Nantong City, Jiangsu Province Patentee before: Rudong Huanghai water conservancy construction engineering company |