CN105294134B - A kind of preparation method of the iron runner castable containing graphene oxide - Google Patents

A kind of preparation method of the iron runner castable containing graphene oxide Download PDF

Info

Publication number
CN105294134B
CN105294134B CN201510860955.9A CN201510860955A CN105294134B CN 105294134 B CN105294134 B CN 105294134B CN 201510860955 A CN201510860955 A CN 201510860955A CN 105294134 B CN105294134 B CN 105294134B
Authority
CN
China
Prior art keywords
graphene oxide
equal
raw
iron runner
castable
Prior art date
Application number
CN201510860955.9A
Other languages
Chinese (zh)
Other versions
CN105294134A (en
Inventor
程本军
何可
张少伟
古丽寨娜
林良绪
刘诚
Original Assignee
中南大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中南大学 filed Critical 中南大学
Priority to CN201510860955.9A priority Critical patent/CN105294134B/en
Publication of CN105294134A publication Critical patent/CN105294134A/en
Application granted granted Critical
Publication of CN105294134B publication Critical patent/CN105294134B/en

Links

Abstract

The present invention provides a kind of preparation method of the iron runner castable containing graphene oxide, comprises the following steps:Step 1:Premix, raw material and auxiliary material are well mixed, raw material includes dense alumina, white fused alumina, carborundum, α Al2O3Micro mist, fine silica powder, aluminate cement, pelletted pitch and simple substance silica flour, auxiliary material include water reducer and explosion-proof fiber;Step 2:Add graphene oxide solution and graphene oxide antioxidant.Apply the technical scheme of the present invention, have the following effects that:(1) preparation process is simplified, and is adapted to industrialized production;(2) the conventional carbonaceous material dosage such as pelletted pitch can be reduced by adding graphene oxide, and the generation of poisonous carcinogenic flue gas can be reduced when being used in hot environment;(3) addition of graphene oxide can be effectively increased the content of carbon in castable, and can reduce amount of water and reduce the porosity of iron runner castable, improve structural strength, thermal shock resistance and the erosion-resisting characteristics of iron runner castable.

Description

A kind of preparation method of the iron runner castable containing graphene oxide
Technical field
The present invention relates to iron runner castable field, the preparation side of more particularly to a kind of iron runner castable containing graphene oxide Method.
Background technology
Blast furnace iron runner is the passage for guiding high temperature liquid iron and slag, and its refractory lining is by molten iron and the height of slag Temperature, machinery and chemical erosion.As blast furnace smelting technology is to maximization development, molten iron temperature is higher, iron increase, leads to iron Time lengthening, interval time of tapping a blast furnace is short, the enhancing of slag iron oxidisability so that high temperature liquid iron and slag wash away and ground to refractory material Damage increase, this scour resistance, thermal shock resistance, anti-cracking property and corrosion resistance to refractory material propose it is harsher will Ask.
At present large blast furnace tap a blast furnace pouring refractories it is commonly used be Al2O3- SiC-C matter castables, the castable have good Elevated temperature strength well, scour resistance, anti-slag iron aggressivity etc., carbon and carborundum in castable have not wet by molten iron and molten slag Profit and high thermal conductivity, are added in castable, can significantly improve castable thermal shock resistance etc., therefore, carbon and carborundum High-termal conductivity, low thermal expansion and non wettability assign castable system good physicochemical property.
Al at present2O3The carbonaceous material used in-SiC-C matter castables is hard pitch or pelletted pitch.Dripped by introducing Green grass or young crops, the carbon content in castable can be effectively improved, wherein pelletted pitch surface is smooth, and the mobility of castable can be made more preferable, its Castable hole is penetrated into after heating and softening, prevents slag from internally permeating, improves erosion-resisting characteristics, the thermal conductivity of material can be improved To improve thermal shock resistance, the structure spalling and cracking of lightening material, so as to improve the performance of iron runner castable.But with The increase of pelletted pitch addition, the water requirement increase of castable, apparent porosity increase, bulk density and intensity gradually drop It is low;In addition, pitch contains BaP, BaP can produce easily carcinogenic yellow dense smoke during applied at elevated temperature, to operator The health of member produces threat.Graphite has excellent physicochemical property, phosphorus content height and advantages of good crystallization, is preferable carbonaceous material addition Thing, still, because water is to the not wettability of graphite surface, it is introduced directly into that graphite is less efficient, graphite is scattered in castable Property is very poor, and this have impact on the mobility of castable, and with increasing for crystalline flake graphite addition, the demand of water is significantly increased Add, so that the apparent porosity rise of castable, bulk density reduction and intensity are greatly reduced, the presetting period is longer, is unfavorable for Actual use.
Because crystalline flake graphite as carbon source is difficult to be introduced directly into, researcher is exploring various methods and is introducing graphite always Into castable.Such as " a kind of preparation method of granulated graphite for castable refractory " (CN102491760A) patented technology, Disclose and substitute crystalline flake graphite with granulated graphite, the amount of water of castable decreases, and mobility is improved, still The graphite being introduced into this way is not easy to be uniformly dispersed in matrix, and the efficiency being granulated is very low, is not suitable for large-scale production; " a kind of iron runner castable containing modified graphite and preparation method thereof " (CN104402479A) patented technology, disclose with modified stone Ink adds Al2O3- SiC-C matter castables, its rupture strength and resistance to slag are improved, but its density diminishes, and sample is strong after drying Degree reduces more.
Therefore, be badly in need of in industry finding it is a kind of have amount of water is few, slamp value is big, high thermal shock resistance, iron greatly with And refractory consumption rate it is few the features such as iron runner castable.
The content of the invention
It is an object of the invention to provide a kind of preparation method of the iron runner castable containing graphene oxide, including following step Suddenly:
Step 1:Premix, it is specifically:Raw material and auxiliary material are added into stirrer for mixing and uniformly obtain the first dispensing, its In, it is calculated in mass percent raw material and includes following components:
Dense alumina 20-50% white fused alumina 10-30% carborundum 10-30%
α-Al2O3Micro mist 2-10% fine silica powder 0.2-5% aluminate cements 1-5%
Pelletted pitch 0.5-3% simple substance silica flours 1-3%;
The auxiliary material includes the water reducer of the raw material gross weight 0.1-0.5% and the raw material gross weight 0.05- 0.2% explosion-proof fiber;
Step 2:The addition of graphene oxide solution and graphene oxide antioxidant, it is specifically:First by graphite oxide Alkene is added in graphene oxide solution with antioxidant and obtains the second dispensing, then the second dispensing is added into step 1 gained first and matched somebody with somebody The 3rd dispensing is uniformly mixing to obtain in material, the iron runner castable containing graphene oxide is produced after moulding by casting, wherein, the oxidation The concentration of graphene solution is 1-5mg/mL, and the dosage of graphene oxide is described in step 1 in the graphene oxide solution The 0.01-0.1% of raw material gross weight, the dosage of the graphene oxide antioxidant is the graphene oxide dosage 10-30%.
It is preferable in above technical scheme, the step of also including adding water into the 3rd dispensing before moulding by casting, to institute State in the 3rd dispensing to add the step of water and be specifically:The water of raw material gross weight 0.01-3% described in step 1 is added into the 3rd dispensing In stir.
Preferable in above technical scheme, the stir speed (S.S.) in the step 1 and step 2 is 20-25r/min, Mixing time is 3-5min.
Preferable in above technical scheme, its preparation method is specific when the concentration of the graphene oxide solution is 3mg/mL It is:5g crystalline flake graphites are stirred in the 115mL98% concentrated sulfuric acid and the beaker of 2.5g sodium nitrate mixed liquors, after being well mixed, then 15g potassium permanganate stirring reaction 1-2h into the thermostatted water or the beaker of oil bath for being placed in 30-40 DEG C is slowly added to, then heating will Reacting liquid temperature is slowly increased to 90-95 DEG C, continues to add 25mL30% hydrogen peroxide while stirring, solution is changed into from dark brown Vivid yellowish-brown, reaction terminating;Filter while hot, 3-5 washing is first carried out to it with watery hydrochloric acid, afterwards again with distilled water to it 3-5 washing is carried out, produces graphite oxide;Gained graphite oxide is scattered in ultrasonic vibration 0.5-1h in appropriate distilled water, i.e., Brown oxidation graphene dispersing solution is obtained, gained dispersion liquid is then centrifuged into 20-30min with 5000r/min, sediment is removed, takes Supernatant liquor is graphene oxide solution.
It is preferable in above technical scheme, the graphene oxide with antioxidant be magnesium diboride, zirconium diboride and At least one of boron carbide;The water reducer is sodium tripolyphosphate, Sodium Polyacrylate, calgon and BASF At least one of FS-10.
Preferable in above technical scheme, the mass content of alundum (Al2O3) is more than or equal in the dense alumina 98.5%, its granularity is 1-8mm;The mass content of alundum (Al2O3) is more than or equal to 99% in the white fused alumina, and its granularity is less than Equal to 1mm;The mass content of carborundum is more than or equal to 97% in the carborundum, and its granularity is less than or equal to 1mm;α-the Al2O3 The mass content of alundum (Al2O3) is more than or equal to 99% in micro mist, and its granularity is 1-5 μm;Titanium dioxide in the fine silica powder The mass content of silicon is more than or equal to 93%, and its granularity is 0.1-3 μm;In the aluminate cement:The quality of alundum (Al2O3) contains Amount is more than or equal to 70%, and the mass content of calcium oxide is less than or equal to 20%, the granularity of aluminate cement be less than or equal to 0.045mm;The mass content of carbon is more than or equal to 50% in the pelletted pitch, and its granularity is 0.5-1mm;In the simple substance silica flour The mass content of silicon is more than or equal to 97%, and its granularity is less than or equal to 0.074mm;The explosion-proof fiber is that the huge glad chemical fibre in Liaoyang City has The JX-6-3 type fire resisting explosion-proof fibers of limit company production.
Graphene refers to the tightly packed single layer of carbon atom into bi-dimensional cellular shape structure, since Geim in 2004 et al. has found Since the single-layer graphene structure being stabilized, because its have good electric conductivity, higher thermal conductivity, excellent translucency with And mechanical property, many exciting performances and potential are all shown in fields such as microelectronics, quantum physics, material, chemistry Application prospect.
Graphene oxide is the oxide of graphene, and after oxidized, oxygen-containing functional group increases and makes property compared with stone thereon Black alkene is more active, and it belongs to hydroaropic substance, has superior dispersiveness in water, Details as Follows:Graphene oxide is The product that graphite is obtained by chemical oxidization method, it is in accurate two layer structures, the C in its chemical formula:O:H is located at 6:2.33: 1.2 to 6:3.7:Between 2.83, this depends on the degree of oxidation of graphite.Through research, graphene oxide is by not oxidized fragrance Area (sp2Carbon atom) and oxidation formed fatty the two regions of hexa-atomic ring region form.By preparation method, reaction time, oxidation The influence of the factors such as degree, graphene oxide show different chemical composition and structures, are retaining the numerous excellent spies of graphene Property while, there are abundant oxygen-containing functional group carboxyl, hydroxyl, epoxy radicals etc. in its surface so that graphene oxide has good Water-wet behavior, can be dispersed in neutral or weak alkaline aqueous solution.
Technical solution of the present invention has advantages below:
(1) step of preparation process is simplified, and technological parameter is easily controlled, and is adapted to industrialized production.
(2) addition of graphene oxide, the dosage of the conventional carbonaceous material such as pelletted pitch can be reduced, is made in hot environment Used time reduces the generation of poisonous carcinogenic flue gas, clean environment firendly;Graphene oxide possesses the characteristics of wettability is good so that is made Castable amount of water is few, good fluidity;When graphene oxide is added into castable, graphene oxide can sufficiently divide It is scattered in castable, so as to be effectively increased the content of carbonaceous material in castable, carbon can melt infiltration in the case of a high temperature In castable matrix, Dispersed precipitate forms veiny network carbon-chain structure in stomata, reduces the porosity, improves castable Structural strength and erosion-resisting characteristics.
(3) addition of graphene oxide make it that the dosage of pelletted pitch is appropriate, gives full play to its effect, is specifically:It is spherical Asphalt surface is smooth, and the mobility of castable can be made more preferable, and it penetrates into castable hole after heating and softening, and prevents slag internally Infiltration, erosion-resisting characteristics is improved, the thermal conductivity of material can be improved to improve the thermal shock resistance of iron runner castable, lightening material Structure spalling and cracking, so as to improve the performance of iron runner castable.
(4) (magnesium diboride, zirconium diboride, boron carbide etc. aoxidize stone with antioxidant for graphene oxide and graphene oxide Black alkene antioxidant) used using rational proportioning so that graphene oxide can give full play to its excellent performance, specifically It is:Graphene oxide is added in castable with antioxidant, graphene oxide antioxidant is formed steady than carbon preferential oxidation Fixed metal carbides, avoid carbon from being oxidized;And graphene oxide antioxidant and the solid solution of oxygen reaction generation, can be effective Obstructing air holes, suppress the diffusion of gas, so as to play anti-oxidation effect.
(5) combination of simple substance silica flour and pelletted pitch and its proportioning selection are reasonable, and simple substance silica flour can prevent spherical well Bitumen blowing, so as to the performance of the effect of more playing pelletted pitch, further raising cleek castable.
Therefore, the iron runner castable obtained using the inventive method has that amount of water is few, slamp value is big, high thermal shock is stable Property, the features such as iron is big and refractory consumption rate is few, the physical and chemical index of gained iron runner castable is as follows:110 DEG C × It is respectively through detection, bulk density after being heat-treated under the conditions of 24h, 1000 DEG C × 3h and 1450 DEG C × 3h:≥2.90g/cm3、 ≥2.89g/cm3And >=2.91g/cm3;Rupture strength is respectively:>=12.4MPa, >=14.6MPa and >=18.8MPa;It is resistance to Compressive Strength is respectively:>=47.7MPa, >=77.5MPa and >=121.8MPa.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages. Below with reference to specific embodiment, the present invention is further detailed explanation.
Embodiment
Technical scheme is described in detail with reference to embodiments, but the present invention can want according to right The multitude of different ways for limiting and covering is asked to implement.
Comparative example:
Al of the prior art2O3- SiC-C matter iron runner castables, its preparation process are:By raw material (20-50% densification Corundum, 10-30% white fused alumina, 10-30% carborundum, 2-10% α-Al2O3Micro mist, 2-5% fine silica powder, The simple substance silica flour of 1-5% aluminate cement, 2-4% pelletted pitch and 2-4%) in the additional raw material gross weight 0.1- The water of 0.5% water reducer, the explosion-proof fiber of the raw material gross weight 0.05-0.2% and the raw material gross weight 4-6% Afterwards, stirred in mixer, cast molding produces Al2O3- SiC-C matter iron runner castables.
Al2O3The physical and chemical index of-SiC-C matter iron runner castable (being labeled as MTG), refers to table 1, is specially:110 DEG C × It is respectively through detection, bulk density after being heat-treated under the conditions of 24h, 1000 DEG C × 3h and 1450 DEG C × 3h:≥2.88g/cm3、≥ 2.80g/cm3With >=2.80g/cm3;Rupture strength is respectively:>=4MPa, >=5MPa and >=6MPa;Compressive resistance is respectively:≥ 30.0MPa, >=30.0MPa and >=40.0MPa.
Embodiment 1:
A kind of preparation method of the iron runner castable containing graphene oxide, add by weight percentage by 43% densification Corundum, 20% white fused alumina, 20% carborundum, 7% α-Al2O3Micro mist, 3% fine silica powder, 3% aluminate Cement, 2% pelletted pitch and 2% simple substance silica flour constitutive material, add the diminishing by accounting for the raw material gross weight 0.1% Agent and the auxiliary material that the explosion-proof fiber of the raw material gross weight 0.05% is formed is accounted for, add graphene oxide solution and graphite oxide (dosage of graphene oxide is the raw material gross weight 0.05% to alkene antioxidant in graphene oxide solution, graphite oxide The concentration of alkene solution is 3mg/mL, and the dosage of the graphene oxide antioxidant is the graphene oxide dosage 20%).
The graphene oxide is magnesium diboride with antioxidant, and the water reducer is sodium tripolyphosphate.
The mass content of alundum (Al2O3) is more than or equal to 98.5% in the dense alumina, and its granularity is 1-8mm;It is described white The mass content of alundum (Al2O3) is more than or equal to 99% in corundum, and its granularity is less than or equal to 1mm;Carborundum in the carborundum Mass content is more than or equal to 97%, and its granularity is less than or equal to 1mm;α-the Al2O3The mass content of alundum (Al2O3) is big in micro mist In equal to 99%, its granularity is 1-5 μm;The mass content of silica is more than or equal to 93% in the fine silica powder, its Granularity is 0.1-3 μm;In the aluminate cement:The mass content of alundum (Al2O3) is more than or equal to 70%, the quality of calcium oxide Content is less than or equal to 20%, and the granularity of aluminate cement is less than or equal to 0.045mm;The mass content of carbon in the pelletted pitch More than or equal to 50%, its granularity is 0.5-1mm;The mass content of silicon is more than or equal to 97% in the simple substance silica flour, and its granularity is small In equal to 0.074mm;The explosion-proof fiber is that the JX-6-3 type fire resistings explosion-proof of Ju Xin chemical fibres Co., Ltd of Liaoyang City production is fine Dimension.
Above-mentioned concentration is that the preparation method of 3mg/mL graphene oxide solution is as follows:115mL98% the concentrated sulfuric acid and 5g crystalline flake graphites are stirred in the beaker of 2.5g sodium nitrate mixed liquors, after being well mixed, are slow added into 15g potassium permanganate to being placed in Stirring reaction 1-2h in 30-40 DEG C of thermostatted water or the beaker of oil bath, then heats reacting liquid temperature being slowly increased to 90-95 DEG C, continue to add 25mL30% hydrogen peroxide while stirring, solution is changed into vivid yellowish-brown, reaction terminating from dark brown; Filter while hot, first carry out 3-5 washing to it with watery hydrochloric acid, carry out 3-5 washing to it with distilled water again afterwards, produce oxidation Graphite;Gained graphite oxide is scattered in ultrasonic vibration 0.5-1h in appropriate distilled water, produces brown oxidation graphene dispersing solution, Then gained dispersion liquid is centrifuged into 20-30min with 5000r/min, removes sediment, it is that graphene oxide is molten to take supernatant liquor Liquid.The graphene oxide solution of other concentration can be made after conversion with reference to the above method.
Preparation method specifically includes following steps:
Step 1:Premix, raw material and auxiliary material are specifically added into stirrer for mixing and uniformly obtain the first dispensing, is stirred Speed is 25r/min, mixing time 5min;
Step 2:The addition of graphene oxide solution and graphene oxide antioxidant, it is specifically:First by graphite oxide Alkene is added in graphene oxide solution with antioxidant and obtains the second dispensing, then the second dispensing is added into step 1 gained first and matched somebody with somebody The 3rd dispensing is uniformly mixing to obtain in material, the iron runner castable containing graphene oxide of the present embodiment is produced after moulding by casting, is stirred It is 20r/min, mixing time 4min to mix speed;
The concrete technology of the moulding by casting can refer to prior art (being specifically to be determined according to the situation at cast scene).
The iron runner castable of the present embodiment is labeled as TG1, and its physical and chemical index refers to table 4.
Embodiment 2:
A kind of preparation method of the iron runner castable containing graphene oxide, add by weight percentage by 50% densification Corundum, 10% white fused alumina, 15% carborundum, 10% α-Al2O3Micro mist, 5% fine silica powder, 5% aluminate Cement, 3% pelletted pitch, 2% simple substance silica flour constitutive material, add the water reducer by accounting for the raw material gross weight 0.5% And the auxiliary material that the explosion-proof fiber of the raw material gross weight 0.2% is formed is accounted for, add the oxygen for accounting for the raw material gross weight 0.01% The graphene oxide antioxidant of graphite alkene and the graphene oxide dosage 10-30%, add raw material gross weight 3% Water.
The graphene oxide is zirconium diboride with antioxidant, and the water reducer is Sodium Polyacrylate.
Graphene oxide solution of the above-mentioned graphene oxide using concentration as 5mg/mL adds.The graphene oxide solution Preparation method is with reference to embodiment 1.
Preparation method specifically includes following steps:
Step 1:Premix, raw material and auxiliary material are specifically added into stirrer for mixing and uniformly obtain the first dispensing, is stirred Speed is 23r/min, mixing time 4min;
Step 2:The addition of graphene oxide solution and graphene oxide antioxidant, it is specifically:First by graphite oxide Alkene is added in graphene oxide solution with antioxidant and obtains the second dispensing, then the second dispensing is added into step 1 gained first and matched somebody with somebody The 3rd dispensing is uniformly mixing to obtain in material, the water of raw material gross weight 3% described in step 1 is added in the 3rd dispensing and stirred Even, moulding by casting produces iron runner castable of the present embodiment containing graphene oxide, stir speed (S.S.) 22r/min, and mixing time is 5min。
The preparation method of above-mentioned graphene oxide solution and other are same as Example 1.
The iron runner castable of the present embodiment is labeled as TG2, and its physical and chemical index refers to table 4.
Embodiment 3:
A kind of preparation method of the iron runner castable containing graphene oxide, add by weight percentage by 30% densification Corundum, 30% white fused alumina, 30% carborundum, 3% α-Al2O3Micro mist, 1% fine silica powder, 4% aluminate Cement, 1% pelletted pitch, 1% simple substance silica flour constitutive material, add by the water reducer of the raw material gross weight 0.5% with And the raw material gross weight 0.1% explosion-proof fiber form auxiliary material, add the raw material gross weight 0.1% graphene oxide and The graphene oxide antioxidant of the graphene oxide dosage 10%, add the water of the raw material gross weight 1%.
The graphene oxide is boron carbide with antioxidant, and the water reducer is calgon.
Graphene oxide solution of the above-mentioned graphene oxide using concentration as 1mg/mL adds.The graphene oxide solution Preparation method is with reference to embodiment 1.
Preparation method specifically includes step same as Example 2.
The preparation method of above-mentioned graphene oxide solution and other are same as Example 1.
The iron runner castable of the present embodiment is labeled as TG3, and its physical and chemical index refers to table 4.
The embodiment 1 to the identical preparation method of embodiment 3, each component concrete composition such as institute of table 1 of example 4 below -8 Show.
The embodiment 4 of table 1 is to each component of embodiment 8 and dosage statistical form
The concentration of graphene oxide, graphene oxide are used in the graphene oxide solution used in embodiment 4- embodiments 8 The species of antioxidant is as shown in table 2 below.
The embodiment 4-8 of table 2 uses the concentration of graphene oxide solution, the species and use of graphene oxide antioxidant Measure statistical form
Table 3 is referred to using the composition and percentage by weight of water reducer in embodiment 4- embodiments 8.
The embodiment 4 of table 3 to embodiment 8 uses the composition and percentage by weight statistical form of water reducer
Parameter affiliated embodiment Example IV Embodiment five Embodiment six Embodiment seven Embodiment eight
Sodium tripolyphosphate (%) 50 80
Sodium Polyacrylate (%) 50 50 20
Calgon (%) 50 80 20
FS-10 (%) 100
Embodiment 4- embodiments 8 are respectively labeled as TG4-TG8, its physical and chemical index refers to table 4.
The performance pair of 4 existing iron runner castable of table (being labeled as MTG) and the present embodiment 1 to the iron runner castable of embodiment 8 Compare table
As known from Table 4, after adding graphene oxide during prepared by iron runner castable of the present invention, amount of water is reduced, is added The content of carbonaceous material, reduces the porosity in castable, improve the structural strength of iron runner castable, thermal shock resistance and Erosion-resisting characteristics.Meanwhile during applied at elevated temperature, the iron runner castable that the inventive method obtains has green, iron runner iron Big and refractory consumption rate is few (to be specifically:It can illustrate institute of the present invention from the raising of bulk density, rupture strength and compressive resistance The performance for obtaining castable has very big lifting, so that castable is more durable;At present, the cleek of castable leads in the prior art Iron uses the iron of castable obtained by the inventive method up to 250,000 tons to 300,000 tons at 150,000 tons).
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (7)

1. a kind of preparation method of the iron runner castable containing graphene oxide, it is characterised in that comprise the following steps:
Step 1:Premix, it is specifically:Raw material and auxiliary material are added into stirrer for mixing and uniformly obtain the first dispensing, wherein, with Mass percentage raw material includes following components:
Dense alumina 20-50% white fused alumina 10-30% carborundum 10-30%
α-Al2O3Micro mist 2-10% fine silica powder 0.2-5% aluminate cements 1-5%
Pelletted pitch 0.5-3% simple substance silica flours 1-3%;
Water reducer and the raw material gross weight 0.05-0.2% of the auxiliary material including the raw material gross weight 0.1-0.5% Explosion-proof fiber;
Step 2:The addition of graphene oxide solution and graphene oxide antioxidant, it is specifically:First graphene oxide is used Antioxidant, which is added in graphene oxide solution, obtains the second dispensing, then the second dispensing is added in the first dispensing obtained by step 1 The 3rd dispensing is uniformly mixing to obtain, the iron runner castable containing graphene oxide is produced after moulding by casting, wherein, the graphite oxide The concentration of alkene solution is 3-5mg/mL, and the dosage of graphene oxide is raw material gross weight in step 1 in the graphene oxide solution The 0.01-0.05% of amount, the graphene oxide is with the 10-30% that the dosage of antioxidant is graphene oxide dosage.
2. the preparation method of the iron runner castable according to claim 1 containing graphene oxide, it is characterised in that pour into Also include into the 3rd dispensing plus the step of water before type, be specifically into the 3rd dispensing plus the step of water:By step The water of raw material gross weight 0.01-3% described in one is added in the 3rd dispensing and stirred;
The concentration of the graphene oxide solution is 5mg/mL, and the dosage of graphene oxide is step in the graphene oxide solution The 0.01% of raw material gross weight in rapid one;
Either, the concentration of the graphene oxide solution is 3mg/mL, graphene oxide in the graphene oxide solution Dosage is 0.03% of raw material gross weight in step 1.
3. the preparation method of the iron runner castable according to claim 2 containing graphene oxide, it is characterised in that the step Rapid one and step 2 in stir speed (S.S.) be 20-25r/min, mixing time is 3-5min.
4. the preparation method of the iron runner castable containing graphene oxide according to claim 1-3 any one, its feature It is, its preparation method is specifically when the concentration of the graphene oxide solution is 3mg/mL:115mL98% the concentrated sulfuric acid and 5g crystalline flake graphites are stirred in the beaker of 2.5g sodium nitrate mixed liquors, after being well mixed, are slow added into 15g potassium permanganate to being placed in Stirring reaction 1-2h in 30-40 DEG C of thermostatted water or the beaker of oil bath, then heats reacting liquid temperature being slowly increased to 90-95 DEG C, continue to add 25mL30% hydrogen peroxide while stirring, solution is changed into vivid yellowish-brown, reaction terminating from dark brown; Filter while hot, first carry out 3-5 washing to it with watery hydrochloric acid, carry out 3-5 washing to it with distilled water again afterwards, produce oxidation Graphite;Gained graphite oxide is scattered in ultrasonic vibration 0.5-1h in appropriate distilled water, produces brown oxidation graphene dispersing solution, Then gained dispersion liquid is centrifuged into 20-30min with 5000r/min, removes sediment, it is that graphene oxide is molten to take supernatant liquor Liquid.
5. the preparation method of the iron runner castable according to claim 4 containing graphene oxide, it is characterised in that the oxygen Graphite alkene is at least one of magnesium diboride, zirconium diboride and boron carbide with antioxidant;The water reducer is trimerization Sodium phosphate, Sodium Polyacrylate, at least one of the FS-10 of calgon and BASF.
6. the preparation method of the iron runner castable according to claim 4 containing graphene oxide, it is characterised in that the cause The mass content of alundum (Al2O3) is more than or equal to 98.5% in close corundum, and its granularity is 1-8mm;Three oxidation two in the white fused alumina The mass content of aluminium is more than or equal to 99%, and its granularity is less than or equal to 1mm;In the carborundum mass content of carborundum be more than etc. In 97%, its granularity is less than or equal to 1mm;α-the Al2O3The mass content of alundum (Al2O3) is more than or equal to 99% in micro mist, its Granularity is 1-5 μm;The mass content of silica is more than or equal to 93% in the fine silica powder, and its granularity is 0.1-3 μm; In the aluminate cement:The mass content of alundum (Al2O3) is more than or equal to 70%, and the mass content of calcium oxide is less than or equal to 20%, the granularity of aluminate cement is less than or equal to 0.045mm;The mass content of carbon is more than or equal in the pelletted pitch 50%, its granularity is 0.5-1mm;The mass content of silicon is more than or equal to 97% in the simple substance silica flour, and its granularity is less than or equal to 0.074mm。
CN201510860955.9A 2015-11-30 2015-11-30 A kind of preparation method of the iron runner castable containing graphene oxide CN105294134B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510860955.9A CN105294134B (en) 2015-11-30 2015-11-30 A kind of preparation method of the iron runner castable containing graphene oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510860955.9A CN105294134B (en) 2015-11-30 2015-11-30 A kind of preparation method of the iron runner castable containing graphene oxide

Publications (2)

Publication Number Publication Date
CN105294134A CN105294134A (en) 2016-02-03
CN105294134B true CN105294134B (en) 2017-12-19

Family

ID=55192072

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510860955.9A CN105294134B (en) 2015-11-30 2015-11-30 A kind of preparation method of the iron runner castable containing graphene oxide

Country Status (1)

Country Link
CN (1) CN105294134B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106396708A (en) * 2016-08-31 2017-02-15 浙江盛旺耐火材料股份有限公司 Silicon carbide castable special for incinerators
CN107867867A (en) * 2016-09-26 2018-04-03 湖南永盛高新耐火材料有限公司 A kind of high-performance anhydrous stemming of graphene-containing and preparation method thereof
CN106430174A (en) * 2016-10-09 2017-02-22 黎明职业大学 Monolithic graphene oxide aqueous dispersing solution and preparation method thereof
CN109055922B (en) * 2018-09-05 2019-08-27 东北大学 A kind of method that step activation method prepares chemical plating iron graphene
CN109053172A (en) * 2018-09-13 2018-12-21 丁杨洋 A kind of medium-frequency induction furnace Dry vibrating material and preparation method thereof and application method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103396146A (en) * 2013-08-14 2013-11-20 武汉科技大学 Zirconium oxide modified graphene powder for refractory material and preparation method thereof
CN103382028A (en) * 2013-08-17 2013-11-06 青岛中科昊泰新材料科技有限公司 Preparation of graphene oxide and post-processing method for waste liquor
CN103664211B (en) * 2013-12-12 2016-01-20 常州苏瑞纳碳科技有限公司 A kind of blast furnace iron outlet groove mould material and preparation method thereof
CN104086202B (en) * 2014-07-24 2015-09-16 郑州市瑞沃耐火材料有限公司 Iron-smelting blast furnace main iron hook dedicated pouring material
CN104402479A (en) * 2014-12-08 2015-03-11 武汉科技大学 Modified graphite-containing iron runner castable and preparation method thereof

Also Published As

Publication number Publication date
CN105294134A (en) 2016-02-03

Similar Documents

Publication Publication Date Title
CN105218004B (en) A kind of preparation method of conductive geopolymer
CN103979992B (en) Ladle porous brick and preparation method thereof
CN101445379B (en) Dedicated pouring material for cement kiln outlet and jetting coal pipe and preparation method thereof
CN101723687B (en) Alumina bubble lightweight insulating refractory casting material
CN101531533B (en) Low carbon magnesia carbon brick and preparation method thereof
CN105541359B (en) A kind of ladle splash guard castable refractory and preparation method thereof
Cao et al. Sinterability, microstructure and compressive strength of porous glass-ceramics from metallurgical silicon slag and waste glass
CN102126867B (en) High-density high-strength alumina self-flow castable
CN105272275B (en) A kind of forsterite lightweight thermal insulation brick based on ferronickel slag and preparation method thereof
Xi et al. Preparation of glass-ceramic foams using extracted titanium tailing and glass waste as raw materials
CN100486927C (en) Method for fabricating low carbon Al2O3 slide brick based on bauxite beta-Sialon
CN104926325A (en) Ladle bottom castable and preparation method thereof
CN100478305C (en) Aluminum oxide electric furnace cover pouring material and preparation method thereof
CN105237001B (en) Coke dry quenching furnace castable of in-situ preparation aluminium nitride and preparation method thereof
CN103172395B (en) Corundum spinel castable with micro-nano pore structure and preparation method of corundum spinel castable
CN102491768A (en) Composite bonding wear-resistant castable refractory
CN103553689B (en) High-strength, alkali-proof and fireproof pouring material
CN109081697A (en) It is a kind of to prepare B4The method of C/SiC composite ceramic
CN103011868B (en) Al2O3-SiC-C iron runner casting material and preparation method thereof
CN101654375B (en) Low-carbon magnesia carbon brick
CN102167513B (en) A kind of technology of preparing of silicophosphate enamel
CN104496438B (en) A kind of quartz sand ore mine tailing or silica sand ore deposit mine tailing base high-strength ceramic plate and preparation method thereof
CN104909771B (en) Aluminous cement combined corundum matter castable and preparation method thereof
CN102674861B (en) Refractory castable containing viscoplasticity phase and preparation method thereof
CN101570651B (en) Corrosion-resistance coating of polysilicon ingot furnace, high temperature resistance protective layer and preparation method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CB03 Change of inventor or designer information
CB03 Change of inventor or designer information

Inventor after: Cheng Benjun

Inventor after: He Ke

Inventor after: Zhang Shaowei

Inventor after: Guridge Aa

Inventor after: Lin Liangxu

Inventor after: Liu Cheng

Inventor before: Cheng Benjun

Inventor before: He Ke

Inventor before: Zhang Shaowei

Inventor before: Guridge Aa

Inventor before: Lin Liangxu

Inventor before: Liu Cheng