CN107721438B - A kind of blast furnace masonry brick fuel carbonaceous clay and preparation method - Google Patents

A kind of blast furnace masonry brick fuel carbonaceous clay and preparation method Download PDF

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CN107721438B
CN107721438B CN201710954623.6A CN201710954623A CN107721438B CN 107721438 B CN107721438 B CN 107721438B CN 201710954623 A CN201710954623 A CN 201710954623A CN 107721438 B CN107721438 B CN 107721438B
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granularity
clay
powder
blast furnace
carbonaceous
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CN107721438A (en
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周旺枝
徐国涛
刘黎
张洪雷
刘孟
刘继雄
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Wuhan Iron and Steel Co Ltd
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Wuhan Iron and Steel Co Ltd
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
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    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
    • C04B2235/483—Si-containing organic compounds, e.g. silicone resins, (poly)silanes, (poly)siloxanes or (poly)silazanes
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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Abstract

A kind of blast furnace masonry brick fuel carbonaceous clay, its raw material composition and wt% are as follows: anchracite duff or coke powder of the granularity in 0.074 ~ 1mm: 5 ~ 25%, granularity≤0.074mm graphite powder: 15 ~ 35%, granularity≤0.074mm carborundum powder: 10-25%, soluble mesophase pitch: 20 ~ 40%, organic siliconresin is no more than 8%, and hexamethylene or quinoline are no more than 13%.Preparation method: anchracite duff or coke powder, graphite powder, carborundum powder are mixed to uniform；Soluble mesophase pitch is first mixed with organic siliconresin, then mixing is added in hexamethylene or quinoline；Above two mixture is remixed；It is placed in stand-by in closing canister.The present invention pollution it is small, convenient for construction, and thermal coefficient be not less than 18w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be not less than 8.0MPa, bulk density be not less than 1.4g/cm3。

Description

A kind of blast furnace masonry brick fuel carbonaceous clay and preparation method
Technical field
The present invention relates to a kind of industrial kiln fire resisting material fields, specifically belong to a kind of charcoal of blast furnace carbon brick masonry Matter clay and preparation method.
Background technique
Blast furnace masonry is the key that one of blast furnace refractory material kind with brick fuel, and charcoal brick masonry environment in blast furnace compares The positions such as severe bosh and furnace bosh, temperature reach 1400-1650 DEG C, are present between graphite brickwork joint after the charing of carbonaceous clay, will Graphite brick is cemented to an entirety.Carbonaceous clay is a kind of product that technical requirements are quite stringent, and the quality of performance indicator is straight The masonry quality for influencing graphite brick is connect, and the service life (higher level 16-20 in the world) of blast furnace depends primarily on cupola well, bosh And the material and masonry and construction quality of furnace bosh.Carbonaceous clay of good performance can be such that the service life of blast furnace extends, and reduce blast furnace Liner maintenance frequency and slag splashing number, improve the work quality of blast furnace.It is required that must to have an adhesive strength big for carbonaceous clay, Thermal conductivity is high, can in room temperature andUnder low temperatureConstruction restores fast with the graphite brick masonry intensity that carbonaceous clay bonds, and construction is existing The performances such as field good operational environment.
Currently, blast furnace mostly uses phenolic resin to combine greatly with carbonaceous clay, and phenolic resin is easy hardening, to the stream of clay Dynamic property has an impact, and is unfavorable for constructing, and in addition for blast furnace masonry carbonaceous clay, resin content is high, and some is up to 40%-50%, The conductivity of heat of bonding agent is done lower than carbon material using resin.In addition, making under the clay high temperature of resin-bonded and in blast furnace internal pressure With lower generation hole, by coal gas erosion and dusting, cause brickwork joint damaged, influence the normal operation of blast furnace.
Through retrieving, patent CN201210081517.9 discloses a kind of high strength at high temperature carbonaceous clay, it is smokeless using raw material Coal, graphous graphite powder, composite additive and liquid resin are prepared according to a certain ratio: first by anthracite in graphitizing furnace High temperature processing, is broken into powder after cooling；Graphitization anchracite duff, graphite powder and composite additive are pressed into 40 ± 10:30 ± 10: 30 ± 10 weight is uniformly mixed into powder；Powder and liquid resin are stirred evenly in the ratio of 3:1, discontinuous degassing It is got product after 1 hour, which uses liquid resin for bonding agent, easily hardens and mobility under carbonaceous clay room temperature obtained Difference is not easy to construct.Patent CN201110264606.2 discloses a kind of graphite cement, the raw material containing following mass fractions: Graphite powder 20-35 parts of electrolysis, 5-15 parts of expanded graphite, 10-15 parts of boron oxide, 10-20 parts of titanium oxide, thermosetting resin 10-20 Part.The thermosetting resin is melamine resin, polybutadiene or organic siliconresin.The graphite cement Raw material composition are as follows: graphite powder 25-30 parts of electrolysis, 8-12 parts of expanded graphite, 12-14 parts of boron oxide, 14-18 parts of titanium oxide, thermosetting 12-16 parts of resin of property, resin content is less in the carbonaceous clay of the invention, caking property it is difficult to ensure that.Patent CN200610131620.4 is related to a kind of ultra-large type blast furnace high conductive high strength fritter graphite brick and production method and application, with 100 mass parts raw material meters, petroleum coke and pitch coke composition mixing coke 92~94%, graphite powder 6~8%, wherein petroleum coke and Pitch coke mass ratio is 5: 1；Medium temperature coal pitch dosage is the 26~30% of total mass of raw material；Raw material is crushed, part is milled, It is made by a certain percentage after being sieved by certain particle size grade.The invention uses medium temperature coal pitch for bonding agent, can volatilize after high temperature Many small-molecule substances pollute operating environment larger.
Summary of the invention
The invention reside in poor thermal conductivity of the existing technology is overcome, room temperature poor fluidity elevated temperature strength is inadequate, and brickwork joint is easy Dusting causes the deficiency that coal gas is walked, and provides a kind of thermal coefficient not less than 18.0w/(m ﹒ k), 110 DEG C × anti-folding is strong afterwards for 24 hours Degree is not less than 8.0MPa, and blast furnace masonry brick fuel carbonaceous clay and the preparation method that compactness is excellent.
Realize the measure of above-mentioned purpose:
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The anchracite duff or coke powder of 1mm: 5 ~ 25%, granularity≤0.074mm graphite powder: 15 ~ 35%, granularity≤0.074mm silicon carbide Powder: 10-25%, soluble mesophase pitch: 20 ~ 40%, organic siliconresin is no more than 8%, and hexamethylene or quinoline are no more than 13%；Charcoal The performance of matter clay: thermal coefficient be not less than 18w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be not less than 8.0MPa.
Preferably: the soluble mesophase pitch weight percent content is 23 ~ 35%.
Further: interphase is not less than 98%, and the quinoline non-soluble solution in interphase in the soluble mesophase pitch Weight percent content≤6% of object.
Further: the organic siliconresin is heat cured.
Further: graphite powder is with natural best.
A kind of blast furnace builds preparation method of the brick fuel with carbonaceous clay, step:
1) by granularity 0.074 ~ 1mm anchracite duff or coke powder, granularity≤0.074mm graphite powder, granularity≤ The carborundum powder of 0.074mm is mixed to uniform, and mixing time is not less than 12 minutes；
2) soluble mesophase pitch is first mixed with organic siliconresin to uniform, then hexamethylene or quinoline are added and are stirred It mixes to uniform, mixing time twice is no less than 20 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time are no less than 12 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
The effect and mechanism of raw material in the present invention:
Anchracite duff or coke powder of the granularity in 0.074 ~ 1mm: it is bonded under anchracite duff or coke powder high temperature in the present invention Property it is lower, in clay be used as carbonaceous aggregate；When its content is lower than 10%, it is unfavorable for the stability of clay high temperature flowering structure；When When its content is higher than 25%, have an impact to the caking property of clay.Therefore its content is limited to 10 ~ 25%.
Granularity≤0.074mm graphite powder: graphite powder is as carbon materials, and high temperatures, resistance to molten iron corrodes, thermally conductive Property is good.When its content is lower than 15%, the erosion performance of resistance to molten iron and thermal conductivity of clay are reduced, when content is higher than 35%, shadow The elevated temperature strength of clay has been rung, therefore has limited the content of graphite powder as 15%-35%.Granularity≤0.074mm carborundum powder: silicon carbide With good thermal conductivity, bond strength is high under high temperature, is conducive to the heat transfer and and adhesion strength of clay masonry.
Soluble mesophase pitch: soluble mesophase pitch has liquid and crystalline nature, can be dissolved in certain solvents, and And soluble mesophase pitch itself contains suitable bonding component, has good self sintering, high Residual carbon, high temperature is burnt There is high density, when its content is lower than 20%, clay mobility and caking property are deteriorated, and when content is greater than 40%, need to add after knot The quantity of solvent added is more, has an impact to the elevated temperature strength of clay, so limiting the content of soluble mesophase pitch are as follows: 20%-40%.
Preferably soluble mesophase pitch weight percent content is 23 ~ 35%.
Conventionally, as soluble mesophase pitch is the mesophase pitch after asphalt high-temperature chemical treatment, it is main It is used for the presoma of novel carbon material, soluble mesophase pitch is built carbon brick clay by few people, It is soluble mesophase pitch higher cost first, there are also be exactly the mobility for needing to add suitable solvent to adjust clay. However, the applicant has found through a large number of experiments, soluble mesophase pitch has well after completely dissolution by the way that solvent is added Mobility and elevated temperature cohesiveness, environmental pollution is small, and thermal conductivity is good, be easily graphitized under high temperature, easily with carbon brick bonding be integral, The high feature of adhesion strength.Therefore tested, introduce the present invention.
Organic siliconresin: content is no more than 8%, and organic siliconresin has both the double grading of organosilicon and inorganic material, well Caking property, high temperature resistant and resistance to molten iron corrode.Content is more than that 8% can make clay room temperature poor fluidity, is not easy to operate.
Hexamethylene or quinoline: content is no more than 13%, and hexamethylene or quinoline are good to the dissolubility of soluble mesophase pitch, Be conducive to the mobility of clay, be convenient for constructing operation.Solvent will affect the elevated temperature strength of clay too much, be unfavorable for tar drip very little Green dissolution.
Compared with prior art, the present invention the bonding agent soluble mesophase pitch that the present invention mainly uses have both liquid and Crystalline nature, itself contains suitable bonding component, has good self sintering, and high Residual carbon has after high temperature sintering High density is dissolved by addition hexamethylene or quinoline solvent, soluble mesophase pitch, is conducive to the flowing of carbonaceous clay Property, and soluble mesophase pitch is pitch by high-temperature process, molecular weight is 4-5 times higher than protobitumen, carbon residue after high temperature sintering Rate is high, and compactness is good, pollutes small, and convenient for construction, the clay thermal coefficient of preparation is not less than 18w/(m ﹒ k), 110 DEG C × for 24 hours Flexural strength is not less than 8.0MPa afterwards, and bulk density is not less than 1. 4g/cm3。
Specific embodiment
The present invention is described in detail below:
Embodiment 1
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The anchracite duff of 1mm: 22.5%, granularity≤0.074mm natural graphite powder: 21%, granularity≤0.074mm carborundum powder: 16.5%, soluble mesophase pitch: 26%, thermosetting silicone resin 6%, hexamethylene 8%；
In the soluble mesophase pitch interphase be 98.6%, and in interphase quinoline non-soluble solution object weight hundred Dividing than content is 5.2%.
Preparation method:
1) anchracite duff by granularity in 0.074 ~ 1mm, granularity≤0.074mm natural graphite powder, granularity≤0.074mm Carborundum powder mix to uniform, mixing time is 13 minutes；
2) soluble mesophase pitch is first mixed with thermosetting silicone resin to uniform, then hexamethylene is added and is stirred It mixes to uniform, mixing time twice was at 23 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time was at 15 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
Detected, preparation clay thermal coefficient be 20.3w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be 10.1MPa, bulk density 1.54g/cm3。
Embodiment 2
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The anchracite duff of 1mm: 14%, granularity≤0.074mm natural graphite powder: 28%, granularity≤0.074mm carborundum powder: 23%, Soluble mesophase pitch: 22%, thermosetting silicone resin 8%, quinoline 5%.
In the soluble mesophase pitch interphase be 99.2%, and in interphase quinoline non-soluble solution object weight hundred Dividing than content is 5.5%.
Preparation method:
1) anchracite duff by granularity in 0.074 ~ 1mm, granularity≤0.074mm natural graphite powder, granularity≤0.074mm Carborundum powder mix to uniform, mixing time is 15 minutes；
2) soluble mesophase pitch is first mixed with thermosetting silicone resin to uniform, then quinoline is added and is stirred To uniform, mixing time twice was at 22 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time was at 16 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
Detected, preparation clay thermal coefficient be 19.7w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength position 9.9MPa, bulk density 1.52g/cm3。
Embodiment 3
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The coke powder of 1mm: 12%, granularity≤0.074mm natural graphite powder: 25%, granularity≤0.074mm carborundum powder: 22%, it is solvable Property mesophase pitch: 27%, thermosetting silicone resin 5.5%, quinoline 8.5%；
In the soluble mesophase pitch interphase be 99.3%, and in interphase quinoline non-soluble solution object weight hundred Dividing than content is 5.3%.
Preparation method:
1) by granularity 0.074 ~ 1mm coke powder, granularity≤0.074mm natural graphite powder, granularity≤0.074mm carbon SiClx powder is mixed to uniform, and mixing time is 16 minutes；
2) soluble mesophase pitch is first mixed with thermosetting silicone resin to uniform, then quinoline is added and is stirred To uniform, mixing time twice was at 25 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time was at 18 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
Detected, preparation clay thermal coefficient be 20.2w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be 10.1MPa, bulk density 1.53g/cm3。
Embodiment 4:
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The coke powder of 1mm: 19%, granularity≤0.074mm natural graphite powder: 26.5%, granularity≤0.074mm carborundum powder: 18%, it can Dissolubility mesophase pitch: 31%, thermosetting silicone resin 1%, hexamethylene 4.5%；
In the soluble mesophase pitch interphase be 98.7%, and in interphase quinoline non-soluble solution object weight hundred Dividing than content is 5.1%.
Preparation method:
1) by granularity 0.074 ~ 1mm coke powder, granularity≤0.074mm natural graphite powder, granularity≤0.074mm carbon SiClx powder is mixed to uniform, and mixing time is 13 minutes；
2) soluble mesophase pitch is first mixed with thermosetting silicone resin to uniform, then hexamethylene is added and is stirred It mixes to uniform, mixing time twice was at 22 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time was at 15 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
Detected, preparation clay thermal coefficient be 19.8 w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be 9.7MPa, bulk density 1.50g/cm3。
Embodiment 5
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The coke powder of 1mm: 24.5%, granularity≤0.074mm natural graphite powder: 18.5%, granularity≤0.074mm carborundum powder: 14%, Soluble mesophase pitch: 32%, thermosetting silicone resin 2.5%, hexamethylene 8.5%；
In the soluble mesophase pitch interphase be 98.7%, and in interphase quinoline non-soluble solution object weight hundred Dividing than content is 5.3%.
Preparation method:
1) by granularity 0.074 ~ 1mm coke powder, granularity≤0.074mm natural graphite powder, granularity≤0.074mm carbon SiClx powder is mixed to uniform, and mixing time is 16 minutes；
2) soluble mesophase pitch is first mixed with thermosetting silicone resin to uniform, then hexamethylene is added and is stirred It mixes to uniform, mixing time twice was at 26 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time was at 17 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
Detected, preparation clay thermal coefficient be 20.1w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be 10.0MPa, bulk density 1.51g/cm3。
Embodiment 6
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The anchracite duff of 1mm: 6%, granularity≤0.074mm natural graphite powder: 24%, granularity≤0.074mm carborundum powder: 17%, it can Dissolubility mesophase pitch: 36.5%, thermosetting silicone resin 4%, hexamethylene 12.5%；
In the soluble mesophase pitch interphase be 99.0%, and in interphase quinoline non-soluble solution object weight hundred Dividing than content is 5.7%.
Preparation method:
1) anchracite duff by granularity in 0.074 ~ 1mm, granularity≤0.074mm natural graphite powder, granularity≤0.074mm Carborundum powder mix to uniform, mixing time is 18 minutes；
2) soluble mesophase pitch is first mixed with thermosetting silicone resin to uniform, then hexamethylene is added and is stirred It mixes to uniform, mixing time twice was at 26 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time was at 17 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
Detected, preparation clay thermal coefficient be 20.3w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be 9.9MPa, bulk density 1.53g/cm3。
Embodiment 7
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The anchracite duff of 1mm: 9%, granularity≤0.074mm natural graphite powder: 29%, granularity≤0.074mm carborundum powder: 11.5%, Soluble mesophase pitch: 37%, thermosetting silicone resin 3.5%, hexamethylene 10%；
In the soluble mesophase pitch interphase be 99.2%, and in interphase quinoline non-soluble solution object weight hundred Dividing than content is 5.0%.
Preparation method:
1) anchracite duff by granularity in 0.074 ~ 1mm, granularity≤0.074mm natural graphite powder, granularity≤0.074mm Carborundum powder mix to uniform, mixing time is 19 minutes；
2) soluble mesophase pitch is first mixed with thermosetting silicone resin to uniform, then hexamethylene is added and is stirred It mixes to uniform, mixing time twice was at 27 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time was at 19 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
Detected, preparation clay thermal coefficient be 20.0w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be 9.2MPa, bulk density 1.49g/cm3。
Embodiment 8:
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The anchracite duff of 1mm: 13%, granularity≤0.074mm natural graphite powder: 32%, granularity≤0.074mm carborundum powder: 17.5%, soluble mesophase pitch: 23.5%, thermosetting silicone resin 3.5%, quinoline 10.5%；
In the soluble mesophase pitch interphase be 98.1%, and in interphase quinoline non-soluble solution object weight hundred Dividing than content is 5.7%.
Preparation method:
1) anchracite duff by granularity in 0.074 ~ 1mm, granularity≤0.074mm natural graphite powder, granularity≤0.074mm Carborundum powder mix to uniform, mixing time is 20 minutes；
2) soluble mesophase pitch is first mixed with thermosetting silicone resin to uniform, then quinoline is added and is stirred To uniform, mixing time twice was at 31 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time was at 19 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
Detected, preparation clay thermal coefficient be 20.6w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be 10.6MPa, bulk density 1.58g/cm3。
Embodiment 9:
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The anchracite duff of 1mm: 11%, granularity≤0.074mm natural graphite powder: 30%, granularity≤0.074mm carborundum powder: 15.5%, soluble mesophase pitch: 32.5%, thermosetting silicone resin 1.5%, hexamethylene 9.5%；
In the soluble mesophase pitch interphase be 99.2%, and in interphase quinoline non-soluble solution object weight hundred Dividing than content is 4.9%.
Preparation method:
1) anchracite duff by granularity in 0.074 ~ 1mm, granularity≤0.074mm natural graphite powder, granularity≤0.074mm Carborundum powder mix to uniform, mixing time is 19 minutes；
2) soluble mesophase pitch is first mixed with thermosetting silicone resin to uniform, then hexamethylene is added and is stirred It mixes to uniform, mixing time twice was at 31 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time was at 19 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
Detected, preparation clay thermal coefficient be 20.6w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be 9.2MPa, bulk density 1.45g/cm3。
Embodiment 10:
A kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity 0.074 ~ The coke powder of 1mm: 10%, granularity≤0.074mm graphite powder: 22%, granularity≤0.074mm carborundum powder: 15%, solubility in Between asphalt phase: 39.5%, thermosetting silicone resin 1.5%, hexamethylene 12%；
In the soluble mesophase pitch interphase be 99.2%, and in interphase quinoline non-soluble solution object weight hundred Dividing than content is 4.8%.
Preparation method:
1) by granularity 0.074 ~ 1mm coke powder, granularity≤0.074mm graphite powder, granularity≤0.074mm silicon carbide Powder is mixed to uniform, and mixing time is 23 minutes；
2) soluble mesophase pitch is first mixed with thermosetting silicone resin to uniform, then hexamethylene is added and is stirred It mixes to uniform, mixing time twice was at 31 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form charcoal Matter clay, mixing time was at 22 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
Detected, preparation clay thermal coefficient be 19.4w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength position 8.1MPa, bulk density 1.41g/cm3。
Present embodiment is only the best example, not to the restricted implementation of technical solution of the present invention.

Claims (6)

1. a kind of blast furnace builds brick fuel carbonaceous clay, raw material composition and weight percent content are as follows: granularity is in 0.074 ~ 1mm Anchracite duff or coke powder: 5 ~ 25%, granularity≤0.074mm graphite powder: 15 ~ 35%, granularity≤0.074mm carborundum powder: 10-25%, soluble mesophase pitch: 20 ~ 40%, organic siliconresin is no more than 8%, and hexamethylene or quinoline are no more than 13%；Carbonaceous The performance of clay: thermal coefficient be not less than 18w/(m ﹒ k), 110 DEG C × for 24 hours after flexural strength be not less than 8.0MPa.
2. a kind of blast furnace as described in claim 1 builds brick fuel carbonaceous clay, it is characterised in that: the solubility interphase Pitch weight percent content is 23 ~ 35%.
3. a kind of blast furnace as claimed in claim 1 or 2 builds brick fuel carbonaceous clay, it is characterised in that: in the solubility Between in asphalt phase interphase be not less than 98%, and in interphase quinoline non-soluble solution object weight percent content≤6%.
4. a kind of blast furnace as described in claim 1 builds brick fuel carbonaceous clay, it is characterised in that: the organic siliconresin is It is heat cured.
5. a kind of blast furnace as described in claim 1 builds brick fuel carbonaceous clay, it is characterised in that: graphite powder with it is natural most It is good.
6. a kind of blast furnace builds the brick fuel preparation method of carbonaceous clay, its step are as follows:
The blast furnace builds the raw material composition and weight percent content of brick fuel carbonaceous clay are as follows: granularity is 0.074 ~ 1mm's Anchracite duff or coke powder: 5 ~ 25%, granularity≤0.074mm graphite powder: 15 ~ 35%, granularity≤0.074mm carborundum powder: 10- 25%, soluble mesophase pitch: 20 ~ 40%, organic siliconresin is no more than 8%, and hexamethylene or quinoline are no more than 13%；
1) by granularity 0.074 ~ 1mm anchracite duff or coke powder: 5 ~ 25%, granularity≤0.074mm graphite powder: 15 ~ 35%, grain Degree≤0.074mm carborundum powder: 10-25% is mixed to uniform, and mixing time is not less than 12 minutes；
2) by 20 ~ 40% soluble mesophase pitchs first be no more than 8% organic siliconresin and mix to uniform, then will be no more than 13% Hexamethylene or quinoline are added and are stirred until homogeneous, and mixing time twice is no less than 20 minutes；
3) homogeneous mixture in step 1) is added in the homogeneous mixture in step 2 and is uniformly mixed and form carbonaceous glue Mud, mixing time are no less than 12 minutes；
4) carbonaceous clay will be formed by be placed in closed canister for use.
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