CN103740885A - Preparation method of slag blocking plug - Google Patents
Preparation method of slag blocking plug Download PDFInfo
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- CN103740885A CN103740885A CN201310681040.2A CN201310681040A CN103740885A CN 103740885 A CN103740885 A CN 103740885A CN 201310681040 A CN201310681040 A CN 201310681040A CN 103740885 A CN103740885 A CN 103740885A
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Abstract
The invention discloses a preparation method of a slag blocking plug, and belongs to the technical field of slag blocking devices. The preparation method comprises the following steps: step one, preparing a castable basic material, which is composed of bauxite, magnesia, waste high-alumina brick, blast furnace gas ash, and calcium-free chromium slag; step two, preparing a binding agent, which is composed of phenolic resin, furfuryl alcohol resin, methyl diphenylene diisocyanate (MDI), urea-formaldehyde resin, titanium dioxide, borax, silicon carbide, neodymium oxide, yttrium oxide, and zirconia; step three, preparing castable of guiding rod; step four, preparing guiding rod, pouring the castable of guiding rod into a mould, wherein in this process, the mould is placed on a vibration platform, the vibration platform vibrates the mould during the castable addition process, and the guiding rod is provided with a first blade and a second blade; step five, assembling the slag blocking plug. The preparation method of the slag blocking plug has the advantages of low production cost and high production efficiency, and the prepared slag blocking slug can greatly improve the slag-blocking efficiency.
Description
Technical field
The present invention relates to slag-removing device for tapping of converter technical field, more particularly, relate to a kind of preparation method of floating plug.
Background technology
When converter smelting terminates, all slag all floats over molten steel surface, and in converter tapping process, especially, after most of molten steel is discharged, at tap hole place, molten steel can form stronger eddy current, and slag inevitably flows out with molten steel.Owing to containing a large amount of compositions harmful to molten steel in slag, and these objectionable constituent will return to or be dissolved in molten steel at any time, affect the purity of molten steel and final steel product quality, simultaneously, a large amount of slags also consumes alloy by the form with different, has reduced the yield of alloy of liquid steel refining process.For this reason, iron and steel enterprise all adopts Converter Skimming technology to control the lower quantity of slag both at home and abroad.
In order to improve converter slag-resisting effect, at pushing off the slag technical elements, conduct extensive research both at home and abroad, since day in 1970 slag-blocking ball tapping of the present invention slag stopping method, tens kinds of pushing off the slag modes have successively been invented, wherein, floating plug is widely used with high, the lower quantity of slag of its pushing off the slag success ratio feature few, accurate positioning.Existing floating plug generally comprises floating plug body part and guide bar part, the use that is partly assembled together of floating plug body part and guide bar, as China Patent No. ZL201220126908.3, invention and created name is: the disclosed technical scheme of floating plug that a kind of converter tapping is used.Guide bar comprises core and flame retardant coating, and flame retardant coating is wrapped in the periphery edge of core, and the two ends of core all stretch out flame retardant coating, and core is generally selected Deformed Steel Bars.
At present, the conventional making method of guide bar part is: (1) adopts steel pipe to cut into two and makes upper/lower die, and upper/lower die is combined into the tubular structure of hollow, its bottom is provided with the round collar, its top adopts annulus card, then is screwed into post, and its diameter is 40 ~ 50mm; (2) with bauxitic clay, magnesia powder and bonding agent etc., be made into gravity flow pouring material, with manually adding mould material device, on shaking table, the vibration while feeding in raw material, until mould material is filled it up with the mould of tubular structure; (3) demoulding maintenance, the preserving period of the demoulding, is: more than 15 ℃ maintenance 24 hours, 2 ~ 10 ℃ with interior maintenance 36 hours, 5 ℃ of following can not normally productions, reason is that bonding agent is inoperative, the demoulding after maintenance, after the demoulding, also take maintenance 7 ~ 10 days, carry out high bake and can use.
In prior art, guide bar is produced and is had following technical problem: the demoulding curing time of (1) guide bar is long, cause production efficiency low, and production cost is high, its key is that bonding agent and the mould material base-material in the flame retardant coating of guide bar needs further to improve, to reduce demoulding curing time; (2) insufficient strength of the flame retardant coating of guide bar, in carrying, easily damage in installation process, the flame retardant coating high temperature strength of normal use, especially guide bar that affect guide bar is inadequate, affects pushing off the slag effect in converter during pushing off the slag use; (3) traditional floating plug pushing off the slag poor effect, very easily causes floating plug drift, and guide bar is not placed in the middle, can not fill in effectively accurately in tap hole, causes pushing off the slag weak effect, and slag is entered in ladle.
Summary of the invention
1. the technical problem that invention will solve
The object of the invention is to overcome in prior art the high temperature strength of guide bar inadequate, the deficiency of the pushing off the slag weak effect of floating plug provides a kind of preparation method of floating plug, adopt technical scheme of the present invention, can improve the high temperature strength of guide bar, and by designing the first blade and the second blade has improved pushing off the slag effect.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
The preparation method of a kind of floating plug of the present invention, the steps include:
The preparation of step 1, mould material base-material
By mass fraction, take 60 ~ 64 parts of bauxitic clays, 33 ~ 36 parts, magnesia, 5 ~ 7 parts of waste and old high alumina bricks, 6 ~ 8 parts of blast furnace dusts and without 4 ~ 6 parts of calcium chromium slags, wherein: described bauxitic clay by particle diameter is≤1mm, 3 ~ 1mm, 5 ~ 3mm, 8 ~ 5mm powder forms, wherein the powder of particle diameter≤1mm accounts for 25% of bauxitic clay total mass, the powder of particle diameter 3 ~ 1mm accounts for 56% of bauxitic clay total mass, the powder of particle diameter 5 ~ 3mm accounts for 15% of bauxitic clay total mass, the powder of particle diameter 8 ~ 5mm accounts for 4% of bauxitic clay total mass, by above-mentioned bauxitic clay, magnesia, waste and old high alumina brick, blast furnace dust and without calcium chromium slag be uniformly mixed 20 minutes mould material base-material,
The preparation of step 2, bonding agent
The preparation process of bonding agent comprises the steps:
(A), by mass fraction, take 4 ~ 6 parts, 2 ~ 3 parts of 1 part of titanium dioxide, borax and silicon carbide, in stirred pot, add titanium dioxide, borax and silicon carbide successively, be uniformly mixed at normal temperatures 20 minutes mixture A, wherein: the median size of borax is 1 ~ 3mm;
(B), by mass fraction, take 30 ~ 35 parts, resol, 8 ~ 12 parts of furfuryl alcohol resins, 5 ~ 9 parts of diphenylmethanediisocyanates, 10 ~ 14 parts of urea-formaldehyde resins, in stirred pot, add resol, furfuryl alcohol resin, diphenylmethanediisocyanate, urea-formaldehyde resin successively, at 35 ~ 40 ℃ of temperature, be uniformly mixed 50 minutes and obtain mixture B;
(C), by mass fraction, take 0.5 ~ 1 part of Neodymium trioxide, 0.3 part of yttrium oxide, 1 ~ 1.5 part of zirconium white, the mixture A of step (A) is added in the mixture B of step (B), and add Neodymium trioxide, yttrium oxide and zirconium white simultaneously, at 35 ~ 40 ℃ of temperature, be uniformly mixed 20 minutes, after standing 30 minutes, continue at normal temperatures to stir within 40 minutes, to obtain bonding agent;
The preparation of step 3, guide bar mould material
Bonding agent prepared by step 2 joins mould material base-material prepared by step 1, and wherein: the mass ratio of mould material base-material and bonding agent is 100:1.5 ~ 2.0, mix and blend obtains guide bar mould material after 40 minutes;
The preparation of step 4, guide bar
Adopt Deformed Steel Bars as core, guide bar mould material prepared by step 3 adds mould, in shaking table top, add the vibration of guide bar mould material limit, until guide bar mould material is filled it up with whole mould, the guide bar that mould prepares comprises core and is cast in the flame retardant coating of core periphery, in described guide bar, be provided with the first blade and the second blade, this first blade and the second blade are trapezoid blade; Preserving period before the demoulding is 20 ~ 40 minutes, 10 ~ 12 hours rebake of maintenance after the demoulding;
The assembling of step 5, floating plug
Select the floating plug body that offers flume on side, guide bar assembling prepared by floating plug body and step 4, obtains floating plug.
Preferably, in step 1 by mass fraction take 62 parts of bauxitic clays, 35 parts, magnesia, 6 parts of waste and old high alumina bricks, 7 parts of blast furnace dusts, without 5 parts of calcium chromium slags.In step 2, by mass fraction, take 33 parts, resol, 10 parts of furfuryl alcohol resins, 7 parts of diphenylmethanediisocyanates, 12 parts of urea-formaldehyde resins, 1 part of titanium dioxide, 2.5 parts of boraxs, 5 parts, silicon carbide, 0.8 part of Neodymium trioxide, 0.3 part of yttrium oxide, 1.2 parts of zirconium whites.In step 3, the mass ratio of mould material base-material and bonding agent is 100:1.8.
3. beneficial effect
Adopt technical scheme provided by the invention, compare with existing known technology, there is following unusual effect:
(1) preparation method of a kind of floating plug of the present invention, the bonding agent of its guide bar mould material adopts resol, furfuryl alcohol resin, diphenylmethanediisocyanate and urea-formaldehyde resin to be used in conjunction with, and allocating titanium dioxide, borax, silicon carbide into uses as admixture, the guide bar demoulding curing time that adopts mould material of the present invention to produce is shortened greatly, the preserving period of the demoulding is 20 ~ 40 minutes, and after the demoulding, maintenance is 10 ~ 12 hours, has improved production efficiency; Simultaneously, in bonding agent, added Neodymium trioxide, yttrium oxide, zirconium white to carry out modification, and the present invention has determined specific ratio control by theory and practice, the guide bar high temperature strength that guide bar mould material is produced is high, and in carrying, installation, use procedure, flame retardant coating is not easy to damage, and has improved pushing off the slag efficiency;
(2) preparation method of a kind of floating plug of the present invention, one end away from floating plug body in its guide bar is provided with the first blade and the second blade, this first blade and the second blade are trapezoidal leaf, after floating plug drops in converter, steel stream washes away the first blade and the second blade, produce larger boosting power, fast floating plug is moved to tap hole position, can effectively control guide bar placed in the middle in tap hole, avoid producing leakage slag phenomenon, and the present invention has adopted the guide bar mould material that high temperature strength is good, make the flame retardant coating of floating plug in pushing off the slag process, the first blade and the second blade do not damage, thereby improved pushing off the slag efficiency,
(3) preparation method of a kind of floating plug of the present invention, uses as mould material base-material using waste and old high alumina brick, blast furnace dust with without calcium chromium slag, makes these wastes obtain resource recycling utilization, has reduced widely the production cost of guide bar mould material.
Accompanying drawing explanation
Fig. 1 is the structural representation of the floating plug prepared of the present invention.
In figure: 1, core; 2, floating plug body; 3, flame retardant coating; 4, flume; 51, the first blade; 52, the second blade.
Embodiment
For further understanding content of the present invention, below in conjunction with embodiment, the invention will be further described.
embodiment 1
In conjunction with Fig. 1, a kind of floating plug of the present embodiment, comprise floating plug body 2 and guide bar, on the side of described floating plug body 2, offer flume 4, described guide bar comprises core 1 and is cast in the flame retardant coating 3 of core 1 periphery, one end away from floating plug body 2 in described guide bar is provided with the first blade 51 and the second blade 52, and this first blade 51 and the second blade 52 are trapezoid blade; Described flame retardant coating 3, the first blade 51 and the second blade 52 formed by the cast of guide bar mould material one, this guide bar mould material comprises mould material base-material and bonding agent, and each component of mould material base-material forms by following mass parts: bauxitic clay 62kg, magnesia 35 kg, waste and old high alumina brick 6 kg, blast furnace dust 7 kg, without calcium chromium slag 5 kg; Each component of bonding agent forms by following mass parts: resol 33kg, furfuryl alcohol resin 10kg, diphenylmethanediisocyanate 7kg, urea-formaldehyde resin 12kg, titanium dioxide 1kg, borax 2.5kg, silicon carbide 5kg, Neodymium trioxide 0.8kg, yttrium oxide 0.3kg, zirconium white 1.2kg; Described mould material base-material and the mass ratio of bonding agent are 100:1.8.
The preparation method of a kind of floating plug of the present embodiment, its concrete preparation process is:
The preparation of step 1, mould material base-material
By mass fraction, take bauxitic clay 62kg, magnesia 35 kg, waste and old high alumina brick 6 kg, blast furnace dust 7 kg, without calcium chromium slag 5 kg, wherein: described bauxitic clay by particle diameter is≤1mm, 3 ~ 1mm, 5 ~ 3mm, 8 ~ 5mm powder forms, wherein the powder of particle diameter≤1mm accounts for 25% of bauxitic clay total mass, the powder of particle diameter 3 ~ 1mm accounts for 56% of bauxitic clay total mass, the powder of particle diameter 5 ~ 3mm accounts for 15% of bauxitic clay total mass, the powder of particle diameter 8 ~ 5mm accounts for 4% of bauxitic clay total mass, by above-mentioned bauxitic clay, magnesia, waste and old high alumina brick, blast furnace dust and without calcium chromium slag be uniformly mixed 20 minutes mould material base-material.Magnesia in the present embodiment, waste and old high alumina brick, blast furnace dust, without the median size of calcium chromium slag, be broken for 1 ~ 1.5mm.
The preparation of step 2, bonding agent
The preparation process of bonding agent comprises the steps:
(A), by mass fraction, take titanium dioxide 1kg, borax 2.5kg, silicon carbide 5kg, in stirred pot, add titanium dioxide, borax and silicon carbide successively, be uniformly mixed at normal temperatures 20 minutes and obtain mixture A, wherein: the median size of borax is that 1 ~ 3mm all can;
(B), by mass fraction, take resol 33kg, furfuryl alcohol resin 10kg, diphenylmethanediisocyanate 7kg, urea-formaldehyde resin 12kg, in stirred pot, add resol, furfuryl alcohol resin, diphenylmethanediisocyanate, urea-formaldehyde resin successively, at 35 ~ 40 ℃ of temperature, be uniformly mixed 50 minutes and obtain mixture B;
(C), by mass fraction, take Neodymium trioxide 0.8kg, yttrium oxide 0.3kg, zirconium white 1.2kg, the mixture A of step (A) is added in the mixture B of step (B), and add Neodymium trioxide, yttrium oxide and zirconium white simultaneously, at 35 ~ 40 ℃ of temperature, be uniformly mixed 20 minutes, after standing 30 minutes, continue at normal temperatures to stir within 40 minutes, to obtain bonding agent.
The preparation of step 3, guide bar mould material
Bonding agent prepared by step 2 joins mould material base-material prepared by step 1, and wherein: the mass ratio of mould material base-material and bonding agent is 100:1.8, mix and blend obtains guide bar mould material after 40 minutes.
The preparation of step 4, guide bar
Adopt Deformed Steel Bars as core 1, guide bar mould material prepared by step 3 adds mould, in shaking table top, add the vibration of guide bar mould material limit, until guide bar mould material is filled it up with whole mould, the guide bar that mould prepares comprises core 1 and is cast in the flame retardant coating 3 of core 1 periphery, in described guide bar, be provided with the first blade 51 and the second blade 52, this first blade 51 and the second blade 52 are trapezoid blade; Preserving period before the demoulding is 20 ~ 40 minutes, 10 ~ 12 hours rebake of maintenance after the demoulding;
The assembling of step 5, floating plug
Select the floating plug body 2 that offers flume 4 on side, guide bar assembling prepared by floating plug body 2 and step 4, obtains floating plug.
A kind of floating plug of the present embodiment, basic structure is with embodiment 1, and difference is: each component of the mould material base-material in the present embodiment forms by following mass parts: bauxitic clay 64kg, magnesia 33 kg, waste and old high alumina brick 7 kg, blast furnace dust 6 kg, without calcium chromium slag 6 kg; Each component of bonding agent forms by following mass parts: resol 30kg, furfuryl alcohol resin 12kg, diphenylmethanediisocyanate 5kg, urea-formaldehyde resin 14kg, titanium dioxide 1kg, borax 2kg, silicon carbide 6kg, Neodymium trioxide 0.5kg, yttrium oxide 0.3kg, zirconium white 1.5kg; Described mould material base-material and the mass ratio of bonding agent are 100:1.5.
The preparation method of a kind of floating plug of the present embodiment, primary process is with embodiment 1, and difference is:
The preparation of step 1, mould material base-material
By mass fraction, take bauxitic clay 64kg, magnesia 33 kg, waste and old high alumina brick 7 kg, blast furnace dust 6 kg, without calcium chromium slag 6 kg, wherein: described bauxitic clay by particle diameter is≤1mm, 3 ~ 1mm, 5 ~ 3mm, 8 ~ 5mm powder forms, wherein the powder of particle diameter≤1mm accounts for 25% of bauxitic clay total mass, the powder of particle diameter 3 ~ 1mm accounts for 56% of bauxitic clay total mass, the powder of particle diameter 5 ~ 3mm accounts for 15% of bauxitic clay total mass, the powder of particle diameter 8 ~ 5mm accounts for 4% of bauxitic clay total mass, by above-mentioned bauxitic clay, magnesia, waste and old high alumina brick, blast furnace dust and without calcium chromium slag be uniformly mixed 20 minutes mould material base-material.
The preparation of step 2, bonding agent
The preparation process of bonding agent comprises the steps:
(A), by mass fraction, take titanium dioxide 1kg, borax 2kg, silicon carbide 6kg, in stirred pot, add titanium dioxide, borax and silicon carbide successively, be uniformly mixed at normal temperatures 20 minutes mixture A, wherein: the median size of borax is that 1 ~ 3mm all can;
(B), by mass fraction, take resol 30kg, furfuryl alcohol resin 12kg, diphenylmethanediisocyanate 5kg, urea-formaldehyde resin 14kg, in stirred pot, add resol, furfuryl alcohol resin, diphenylmethanediisocyanate, urea-formaldehyde resin successively, at 35 ~ 40 ℃ of temperature, be uniformly mixed 50 minutes and obtain mixture B;
(C), by mass fraction, take Neodymium trioxide 0.5kg, yttrium oxide 0.3kg, zirconium white 1.5kg, the mixture A of step (A) is added in the mixture B of step (B), and add Neodymium trioxide, yttrium oxide and zirconium white simultaneously, at 35 ~ 40 ℃ of temperature, be uniformly mixed 20 minutes, after standing 30 minutes, continue at normal temperatures to stir within 40 minutes, to obtain bonding agent.
The preparation of step 3, guide bar mould material
Bonding agent prepared by step 2 joins mould material base-material prepared by step 1, and wherein: the mass ratio of mould material base-material and bonding agent is 100:1.5, mix and blend obtains guide bar mould material after 40 minutes.
embodiment 3
A kind of floating plug of the present embodiment, basic structure is with embodiment 1, and difference is: in the present embodiment, each component of mould material base-material forms by following mass parts: bauxitic clay 60kg, magnesia 36 kg, waste and old high alumina brick 5 kg, blast furnace dust 8 kg, without calcium chromium slag 4 kg; Each component of bonding agent forms by following mass parts: resol 35kg, furfuryl alcohol resin 8kg, diphenylmethanediisocyanate 9kg, urea-formaldehyde resin 10kg, titanium dioxide 1kg, borax 3kg, silicon carbide 4kg, Neodymium trioxide 1kg, yttrium oxide 0.3kg, zirconium white 1kg; Described mould material base-material and the mass ratio of bonding agent are 100:2.0.
The preparation method of a kind of floating plug of the present embodiment, primary process is with embodiment 1, and difference is:
The preparation of step 1, mould material base-material
By mass fraction, take bauxitic clay 60kg, magnesia 36 kg, waste and old high alumina brick 5 kg, blast furnace dust 8 kg, without calcium chromium slag 4 kg, wherein: described bauxitic clay by particle diameter is≤1mm, 3 ~ 1mm, 5 ~ 3mm, 8 ~ 5mm powder forms, wherein the powder of particle diameter≤1mm accounts for 25% of bauxitic clay total mass, the powder of particle diameter 3 ~ 1mm accounts for 56% of bauxitic clay total mass, the powder of particle diameter 5 ~ 3mm accounts for 15% of bauxitic clay total mass, the powder of particle diameter 8 ~ 5mm accounts for 4% of bauxitic clay total mass, by above-mentioned bauxitic clay, magnesia, waste and old high alumina brick, blast furnace dust and without calcium chromium slag be uniformly mixed 20 minutes mould material base-material,
The preparation of step 2, bonding agent
The preparation process of bonding agent comprises the steps:
(A), by mass fraction, take titanium dioxide 1kg, borax 3kg, silicon carbide 4kg, in stirred pot, add titanium dioxide, borax and silicon carbide successively, be uniformly mixed at normal temperatures 20 minutes mixture A, wherein: the median size of borax is that 1 ~ 3mm all can;
(B), by mass fraction, take resol 35kg, furfuryl alcohol resin 8kg, diphenylmethanediisocyanate 9kg, urea-formaldehyde resin 10kg, in stirred pot, add resol, furfuryl alcohol resin, diphenylmethanediisocyanate, urea-formaldehyde resin successively, at 35 ~ 40 ℃ of temperature, be uniformly mixed 50 minutes and obtain mixture B;
(C), by mass fraction, take Neodymium trioxide 1kg, yttrium oxide 0.3kg, zirconium white 1kg, the mixture A of step (A) is added in the mixture B of step (B), and add Neodymium trioxide, yttrium oxide and zirconium white simultaneously, at 35 ~ 40 ℃ of temperature, be uniformly mixed 20 minutes, after standing 30 minutes, continue at normal temperatures to stir within 40 minutes, to obtain bonding agent.
The preparation of step 3, guide bar mould material
Bonding agent prepared by step 2 joins mould material base-material prepared by step 1, and wherein: the mass ratio of mould material base-material and bonding agent is 100:2.0, mix and blend obtains guide bar mould material after 40 minutes.
A kind of floating plug of the present embodiment 1 ~ 3, one end away from floating plug body 2 in its guide bar is provided with the first blade 51 and the second blade 52, this first blade 51 and the second blade 52 are trapezoidal leaf, after floating plug drops in converter, steel stream washes away the first blade 51 and the second blade 52, produce larger boosting power, fast floating plug is moved to tap hole position, can effectively control guide bar placed in the middle in tap hole, avoid producing leakage slag phenomenon, and the present invention has adopted the guide bar mould material that high temperature strength is good, make the flame retardant coating 3 of floating plug in pushing off the slag process, the first blade 51 and the second blade 52 do not damage, thereby improved pushing off the slag efficiency.
In prior art, the preserving period of the demoulding, is: more than 15 ℃ maintenance 24 hours, 2 ~ 10 ℃ with interior maintenance 36 hours, 5 ℃ of following can not normally productions, reason is that bonding agent is inoperative, the demoulding after maintenance, after the demoulding, also take maintenance 7 ~ 10 days, carry out high bake and can use.Demoulding curing time while adopting guide bar mould material in the present embodiment 1-3 for the production of guide bar shortens greatly, and the preserving period of the demoulding is 20 ~ 40 minutes, and maintenance 10 ~ 12 hours simple baking after the demoulding, has improved production efficiency.In addition, guide bar high temperature strength improves greatly, and in carrying, installation, use procedure, flame retardant coating spoilage is 0%, has improved pushing off the slag efficiency.
Claims (4)
1. a preparation method for floating plug, is characterized in that, the steps include:
The preparation of step 1, mould material base-material
By mass fraction, take 60 ~ 64 parts of bauxitic clays, 33 ~ 36 parts, magnesia, 5 ~ 7 parts of waste and old high alumina bricks, 6 ~ 8 parts of blast furnace dusts and without 4 ~ 6 parts of calcium chromium slags, wherein: described bauxitic clay by particle diameter is≤1mm, 3 ~ 1mm, 5 ~ 3mm, 8 ~ 5mm powder forms, wherein the powder of particle diameter≤1mm accounts for 25% of bauxitic clay total mass, the powder of particle diameter 3 ~ 1mm accounts for 56% of bauxitic clay total mass, the powder of particle diameter 5 ~ 3mm accounts for 15% of bauxitic clay total mass, the powder of particle diameter 8 ~ 5mm accounts for 4% of bauxitic clay total mass, by above-mentioned bauxitic clay, magnesia, waste and old high alumina brick, blast furnace dust and without calcium chromium slag be uniformly mixed 20 minutes mould material base-material,
The preparation of step 2, bonding agent
The preparation process of bonding agent comprises the steps:
(A), by mass fraction, take 4 ~ 6 parts, 2 ~ 3 parts of 1 part of titanium dioxide, borax and silicon carbide, in stirred pot, add titanium dioxide, borax and silicon carbide successively, be uniformly mixed at normal temperatures 20 minutes mixture A, wherein: the median size of borax is 1 ~ 3mm;
(B), by mass fraction, take 30 ~ 35 parts, resol, 8 ~ 12 parts of furfuryl alcohol resins, 5 ~ 9 parts of diphenylmethanediisocyanates, 10 ~ 14 parts of urea-formaldehyde resins, in stirred pot, add resol, furfuryl alcohol resin, diphenylmethanediisocyanate, urea-formaldehyde resin successively, at 35 ~ 40 ℃ of temperature, be uniformly mixed 50 minutes and obtain mixture B;
(C), by mass fraction, take 0.5 ~ 1 part of female of oxidation, 0.3 part of yttrium oxide, 1 ~ 1.5 part of zirconium white, the mixture A of step (A) is added in the mixture B of step (B), and add simultaneously oxidation female, yttrium oxide and zirconium white, at 35 ~ 40 ℃ of temperature, be uniformly mixed 20 minutes, after standing 30 minutes, continue at normal temperatures to stir 40 mi and obtain bonding agent;
The preparation of step 3, guide bar mould material
Bonding agent prepared by step 2 joins mould material base-material prepared by step 1, and wherein: the mass ratio of mould material base-material and bonding agent is 100:1.5 ~ 2.0, mix and blend obtains guide bar mould material after 40 minutes;
The preparation of step 4, guide bar
Adopt Deformed Steel Bars as core (1), guide bar mould material prepared by step 3 adds mould, in shaking table top, add the vibration of guide bar mould material limit, until guide bar mould material is filled it up with whole mould, the guide bar that mould prepares comprises core (1) and is cast in the flame retardant coating (3) of core (1) periphery, in described guide bar, be provided with the first blade (51) and the second blade (52), this first blade (51) and the second blade (52) are trapezoid blade; Preserving period before the demoulding is 20 ~ 40 minutes, 10 ~ 12 hours rebake of maintenance after the demoulding;
The assembling of step 5, floating plug
Select the floating plug body (2) that offers flume (4) on side, guide bar assembling prepared by floating plug body (2) and step 4, obtains floating plug.
2. the preparation method of a kind of floating plug according to claim 1, is characterized in that: in step 1 by mass fraction take 62 parts of bauxitic clays, 35 parts, magnesia, 6 parts of waste and old high alumina bricks, 7 parts of blast furnace dusts, without 5 parts of calcium chromium slags.
3. the preparation method of a kind of floating plug according to claim 1 and 2, is characterized in that: in step 2, by mass fraction, take 33 parts, resol, 10 parts of furfuryl alcohol resins, 7 parts of diphenylmethanediisocyanates, 12 parts of urea-formaldehyde resins, 1 part of titanium dioxide, 2.5 parts of boraxs, 5 parts, silicon carbide, 0.8 part of Neodymium trioxide, 0.3 part of yttrium oxide, 1.2 parts of zirconium whites.
4. according to the preparation method of a kind of floating plug described in claim 2 or 3, it is characterized in that: in step 3, the mass ratio of mould material base-material and bonding agent is 100:1.5 ~ 1.8.
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| CN201310681040.2A CN103740885A (en) | 2014-02-28 | 2014-02-28 | Preparation method of slag blocking plug |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113999950A (en) * | 2021-11-16 | 2022-02-01 | 莱芜钢铁集团新兴液气有限公司 | Composite converter slag stopper and preparation method thereof |
| CN117340229A (en) * | 2023-12-04 | 2024-01-05 | 乌兰察布市西蒙鼎新技术开发有限公司 | Drainage agent and preparation method thereof |
| CN117447192A (en) * | 2023-11-02 | 2024-01-26 | 衡水兆星复合材料有限公司 | Slag blocking plug and preparation method thereof |
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2014
- 2014-02-28 CN CN201310681040.2A patent/CN103740885A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342568A (en) * | 2013-07-31 | 2013-10-09 | 高金菊 | Flame-retardant coating casting material for guide rod of skimming plug |
| CN103342569A (en) * | 2013-07-31 | 2013-10-09 | 高金菊 | Preparation method of flame retardant coating casting material for guide rod |
| CN103740884A (en) * | 2013-12-16 | 2014-04-23 | 芜湖市天雄新材料科技有限公司 | Slag blocking plug capable of high-efficiently blocking slag |
| CN204292539U (en) * | 2014-12-20 | 2015-04-29 | 宋健峥 | A kind of multifunctional student desk |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113999950A (en) * | 2021-11-16 | 2022-02-01 | 莱芜钢铁集团新兴液气有限公司 | Composite converter slag stopper and preparation method thereof |
| CN117447192A (en) * | 2023-11-02 | 2024-01-26 | 衡水兆星复合材料有限公司 | Slag blocking plug and preparation method thereof |
| CN117447192B (en) * | 2023-11-02 | 2024-05-03 | 衡水兆星复合材料有限公司 | Slag blocking plug and preparation method thereof |
| CN117340229A (en) * | 2023-12-04 | 2024-01-05 | 乌兰察布市西蒙鼎新技术开发有限公司 | Drainage agent and preparation method thereof |
| CN117340229B (en) * | 2023-12-04 | 2024-02-13 | 乌兰察布市西蒙鼎新技术开发有限公司 | Drainage agent and preparation method thereof |
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Application publication date: 20140423 |