CN104355635A - Casting material and preparation method and use thereof - Google Patents
Casting material and preparation method and use thereof Download PDFInfo
- Publication number
- CN104355635A CN104355635A CN201410597925.9A CN201410597925A CN104355635A CN 104355635 A CN104355635 A CN 104355635A CN 201410597925 A CN201410597925 A CN 201410597925A CN 104355635 A CN104355635 A CN 104355635A
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- CN
- China
- Prior art keywords
- parts
- mould material
- corundum
- cinder
- mould
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/74—Ceramic products containing macroscopic reinforcing agents containing shaped metallic materials
- C04B35/76—Fibres, filaments, whiskers, platelets, or the like
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
Abstract
The invention belongs to the field of metallurgy and particularly relates to a casting material and a preparation method and use thereof. The invention aims to provide the casting material of which the production cost is low. The casting material adopted by the invention comprises the following components in parts by weight: 30-35 parts of corundum cinder of which the particle diameter r is larger than 5mm, equal to or smaller than 10mm, 20-30 parts of the corundum cinder of which the particle diameter r is larger than 2mm, equal to or smaller than 5mm, 10-20 parts of the corundum cinder of which the particle diameter r is larger than 0.045mm, equal to or smaller than 2mm, 10-15 parts of the corundum cinder of which the particle diameter r is equal to or smaller than 0.045mm, 4-6 parts of aluminium oxide, 1-2 parts of heat resistant steel fibres and 0.05-0.15 part of at least one kind of sodium tripolyphosphate or sodium hexametaphosphate. The casting material disclosed by the invention has the advantages that the high temperature resistant property is good, the strength is high, and the service life of cinder spout casting materials which are manufactured with the casting material disclosed by the invention is prolonged to more than 30 days from 15-20 days by using an original material.
Description
Technical field
The invention belongs to field of metallurgy, be specifically related to a kind of mould material and its production and use.
Background technology
China is world steel output big country, consumes a large amount of refractory materialss.Domestic big-and-middle-sized blast furnace residue channel refractory materials general requirement is: high temperature resistant, resistant to corrosion, resistance to erosion, impermeabilisation, high thermal conductivity.Big-and-middle-sized Rafractory for molten iron discharge channel of blast furnace mainly Al
2o
3-SiC matter mould material, its raw material is based on corundum and silicon carbide, and price is higher, and corundum price is 3000-6000 per ton unit.
Thermite process is the main method of domestic production vanadium iron, produce high vanadium ferroalloy by thermite process and have maturation process, but accessory substance corundum furnace slag in process of production, be only limitted to the residual vanadium of second extraction at present and substitute a small amount of bauxitic clay produce alloy, there is utilization few, the shortcomings such as comprehensive utilization value is not high.Pan Gangfan industry company produces high vanadium ferroalloy, annual generation about 5000 tons, slag, and only inner processing broken a small amount of confession, outside hearth bottom material, is mainly taken out with form of waste, be not utilized effectively at present.
And corundum furnace slag is the accessory substance after Pan Gangfan industry company production high vanadium ferroalloy, it is cheap, effectively can replace general corundum as main raw material, at Under the market economy condition increasingly competitive now, raise labour productivity, the big-and-middle-sized Rafractory for molten iron discharge channel of blast furnace of research and production low-cost and high-performance is the basic goal that enterprise development is pursued.
Corundum furnace slag is with Al
2o
3be main component with MgO, Al
2o
3content is greater than 70%, and content of MgO is 10%-15%, CaO content is 8%-10%, and other is impurity component, wherein harmful to refractory materials impurity F e
2o
3content below 2.0%, Na
2o+K
2o content is below 0.5%.
Chinese patent CN201110453234.8 discloses a kind of blast furnace iron outlet groove refractory material casting material, and it is made up of following weight proportioning component: corundum furnace slag 25-50 part of 5-10mm; Corundum furnace slag 15-35 part of 2-5mm, corundum furnace slag 5-15 part of 0-2mm; Carborundum powder 5-15 part; Alundum cement or aluminous cement 1-5 part; Additive 0.1-0.3 part.But applicant finds that in actual production only there is 15-20 days in the work-ing life of this mould material, frequent mould material of changing causes that production cost is higher, workload is excessive.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of mould material of longer service life.
For solving technique scheme, mould material of the present invention, with weight parts, comprises following component:
Wherein, described water reducer can select at least one in tripoly phosphate sodium STPP or Sodium hexametaphosphate 99.
In raw material of the present invention, the corundum furnace slag of particle diameter r:5mm < r≤10mm uses as aggregate, plays the effect of skeletal support in mould material.
In raw material of the present invention, the corundum furnace slag of particle diameter r:2mm < r≤5mm uses as base-material, plays the effect of skeletal support on the one hand, plays the effect of stopping composition on the other hand.
In raw material of the present invention, the corundum furnace slag of particle diameter r:0.045mm < r≤2mm uses as stopping composition, the gap between filler aggregate and base-material, whole mould material is filled closely knit, seamless.
In raw material of the present invention, the corundum furnace slag of particle diameter r:r≤0.045mm uses as bonding agent and stopping composition, is combined closely by all raw materials on the one hand, uses on the other hand as stopping composition.
In raw material of the present invention, water reducer is for improving mould material setting rate and intensity, prevents mould material shrinkage cracking.
In raw material of the present invention, aluminum oxide is conducive to promoting high temperature resistant, the resistance to fouling of mould material.Preferably, for making mould material performance average, aluminum oxide preferred size≤200 order.Because the reactive behavior of activated alumina is stronger, result of use is better, and described aluminum oxide preferably adopts activated alumina.
In the principle of the invention, heat-resistant steel fiber can promote the intensity of mould material, resistance to elevated temperatures, enhanced stability and erosion resistance.Due to its poor heat resistance of ordinary steel fiber, intensity is low, does not reach service requirements, cannot use.
The manufacture method of mould material of the present invention comprises the steps:
A, the corundum furnace slag of different-grain diameter, aluminum oxide, heat-resistant steel fiber, water reducer, water are mixed to get compound;
B, pour in mould, shaping;
C, the demoulding, drying.
Concrete, step a amount of water is 4.5 parts ~ 7.5 parts.
Concrete, for making mould material more closely knit, shaping described in step b adopts vibratory compaction.
Especially, cinder spout mould material requires high to the resistance to elevated temperatures of mould material, and mould material of the present invention is particularly useful for manufacturing cinder spout mould material.
Beneficial effect of the present invention is as follows:
1, technique is simple, corundum furnace slag and other prepare burdens be mixed in proportion, namely shaping, dry, the demoulding obtain mould material, without the need to shaping, oven dry, fragmentation, also only need during use to mix with water.
2, production cost is lower, consuming time shorter, because the present invention is without the need to shaping, oven dry, fragmentation, because this reducing energy consumption and production cost.
3, mould material resistance to elevated temperatures of the present invention is good, intensity is high, through statistics, adopts brought up to more than 30 days by 15-20 days of original material the work-ing life of the cinder spout mould material of mould material manufacture of the present invention.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but it should be understood that and protection scope of the present invention be not limited in this embodiment.
Raw material for standby is taken, wherein corundum furnace slag grade and specification of quality: Al by table 1
2o
3content is greater than 70%, and content of MgO is 10%-15%, CaO content is 8%-10%, Fe
2o
3content is less than 2%; Activated alumina powder grade and specification of quality: Al
2o
3content is greater than 99 parts, granularity-200 order.
Table 1
| Raw material | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| The corundum furnace slag of particle diameter r:5mm < r≤10mm | 35 parts | 35 parts | 35 parts |
| The corundum furnace slag of particle diameter r:2mm < r≤5mm | 30 parts | 30 parts | 30 parts |
| The corundum furnace slag of particle diameter r:0.045mm < r≤2mm | 15 parts | 15 parts | 15 parts |
| The corundum furnace slag of particle diameter r:r≤0.045mm | 10 parts | 12 parts | 13 parts |
| Activated alumina | 7 parts | 6 parts | 5 parts |
| Heat-resistant steel fiber | 3 parts | 2 parts | 2 parts |
| Water reducer | 0.1 part | 0.1 part | 0.1 part |
Embodiment 1
Batching:
By above-mentioned various raw material in table 1 ratio batching, then agitating-bagging in stirrer, add water during use stirring more than 5 minutes again.
Shaping:
The material be uniformly mixed is poured in the mould of cinder spout cast, applies the object that vibration reaches flowing forming by vibrating head to mould material.
Drying and thermal treatment:
The demoulding after air-set drying of this mould material, naturally dries and can come into operation for 6 hours under in situ temperature condition.
Gained mould material performance: 110 DEG C of volume densities are greater than 2.6g/cm
3, dry compressive strength for 110 DEG C and be greater than 22Mpa, after being incubated 3 hours under 1100 DEG C of conditions, compressive strength is greater than 55Mpa; Dry folding strength for 110 DEG C and be greater than 5Mpa, after being incubated 3 hours under 1100 DEG C of conditions, folding strength is greater than 10Mpa.Gained mould material is used as ironmaking cinder spout mould material, reaches 30 days work-ing life.
Embodiment 2
Batching:
By above-mentioned various raw material in table 1 ratio batching, then agitating-bagging in stirrer, add water during use stirring more than 5 minutes again.
Shaping:
The material be uniformly mixed is poured in the mould of cinder spout cast, applies the object that vibration reaches flowing forming by vibrating head to mould material.
Drying and thermal treatment:
The demoulding after air-set drying of this mould material, naturally dries and can come into operation for 6 hours under in situ temperature condition.
Gained mould material performance: 110 DEG C of volume densities are greater than 2.8g/cm
3, dry compressive strength for 110 DEG C and be greater than 20Mpa, after being incubated 3 hours under 1100 DEG C of conditions, compressive strength is greater than 60Mpa; Dry folding strength for 110 DEG C and be greater than 8Mpa, after being incubated 3 hours under 1100 DEG C of conditions, folding strength is greater than 10Mpa.Gained mould material is used as ironmaking cinder spout mould material, reaches 35 days work-ing life.
Embodiment 3
Batching:
By above-mentioned various raw material in table 1 ratio batching, then agitating-bagging in stirrer, add water during use stirring more than 5 minutes again.
Shaping:
The material be uniformly mixed is poured in the mould of cinder spout cast, applies the object that vibration reaches flowing forming by vibrating head to mould material.
Drying and thermal treatment:
The demoulding after air-set drying of this mould material, naturally dries and can come into operation for 6 hours under in situ temperature condition.
Gained mould material performance: 110 DEG C of volume densities are greater than 2.85g/cm
3, dry compressive strength for 110 DEG C and be greater than 16Mpa, after being incubated 3 hours under 1100 DEG C of conditions, compressive strength is greater than 65Mpa; Dry folding strength for 110 DEG C and be greater than 8.5Mpa, after being incubated 3 hours under 1100 DEG C of conditions, folding strength is greater than 12Mpa.Gained mould material is used as ironmaking cinder spout mould material, reaches 38 days work-ing life.
Comparative example
Prepare mould material by CN201110453234.8 embodiment 1 to use as ironmaking cinder spout mould material, work-ing life is 18 days.
Add up discovery by experiment, mould material of the present invention is compared with patent CN201110453234.8 mould material, by the additional proportion of the corundum furnace slag of adjustment 0.045mm < r≤2mm and the corundum furnace slag of r≤0.045mm, corundum furnace slag is filled more closely knit.Substitute silicon carbide with heat-resistant steel fiber, not only add-on significantly reduces compared with the add-on of silicon carbide, and can also promote intensity and the resistance to elevated temperatures of mould material, and keeps good anti-scour property, makes obtain remarkable lifting the work-ing life of mould material.Work-ing life is equal >=and 30 days, the work-ing life of more existing cinder spout mould material extends at least 10 days, obviously progressive.
Claims (7)
1. mould material, is characterized in that, with weight parts, comprises following component:
Wherein, at least one in tripoly phosphate sodium STPP or Sodium hexametaphosphate 99 selected by described water reducer.
2. mould material according to claim 1, is characterized in that: described aluminum oxide grain size≤200 order.
3. the mould material described in claim 1 or 2, is characterized in that: described aluminum oxide is activated alumina.
4. the preparation method of the mould material described in any one of claims 1 to 3, is characterized in that, comprises the following steps:
A, the corundum furnace slag of different-grain diameter, activated alumina, heat-resistant steel fiber, water reducer, water are mixed to get compound;
B, compound is poured in mould, shaping;
C, the demoulding, drying.
5. the preparation method of mould material according to claim 4, is characterized in that: step a amount of water is 4.5 parts ~ 8 parts.
6. the preparation method of the mould material according to claim 4 or 5, is characterized in that: the shaping employing vibratory compaction described in step b.
7. the mould material described in any one of claims 1 to 3 is as the purposes of ironmaking cinder spout mould material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597925.9A CN104355635A (en) | 2014-10-30 | 2014-10-30 | Casting material and preparation method and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597925.9A CN104355635A (en) | 2014-10-30 | 2014-10-30 | Casting material and preparation method and use thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104355635A true CN104355635A (en) | 2015-02-18 |
Family
ID=52522975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410597925.9A Pending CN104355635A (en) | 2014-10-30 | 2014-10-30 | Casting material and preparation method and use thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104355635A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106588053A (en) * | 2016-12-19 | 2017-04-26 | 攀枝花钢城集团有限公司 | Castable for blast furnace slag spout |
| CN108033799A (en) * | 2017-12-14 | 2018-05-15 | 钢城集团凉山瑞海实业有限公司 | Half cylinder of steel tank mouth castable |
| CN109516818A (en) * | 2018-12-03 | 2019-03-26 | 攀枝花钢城集团有限公司 | Hot-metal bottle bottom castable and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515808A (en) * | 2011-12-30 | 2012-06-27 | 攀枝花钢城集团有限公司 | Recycling method of blast furnace tapping channel refractory material castable and corundum furnace slag |
| CN104119082A (en) * | 2013-04-28 | 2014-10-29 | 上海梅山钢铁股份有限公司 | Chromium-free casting material for outer lining of RH (Relative Humidity) furnace inserting tube |
-
2014
- 2014-10-30 CN CN201410597925.9A patent/CN104355635A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515808A (en) * | 2011-12-30 | 2012-06-27 | 攀枝花钢城集团有限公司 | Recycling method of blast furnace tapping channel refractory material castable and corundum furnace slag |
| CN104119082A (en) * | 2013-04-28 | 2014-10-29 | 上海梅山钢铁股份有限公司 | Chromium-free casting material for outer lining of RH (Relative Humidity) furnace inserting tube |
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|---|
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| 许晓海 等: "《耐火材料技术手册》", 31 January 2000, 冶金工业出版社 * |
| 陆厚根: "《粉体工程导论》", 31 August 1993, 同济大学出版社 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106588053A (en) * | 2016-12-19 | 2017-04-26 | 攀枝花钢城集团有限公司 | Castable for blast furnace slag spout |
| CN108033799A (en) * | 2017-12-14 | 2018-05-15 | 钢城集团凉山瑞海实业有限公司 | Half cylinder of steel tank mouth castable |
| CN108033799B (en) * | 2017-12-14 | 2021-01-26 | 钢城集团凉山瑞海实业有限公司 | Castable for semi-steel tank nozzle |
| CN109516818A (en) * | 2018-12-03 | 2019-03-26 | 攀枝花钢城集团有限公司 | Hot-metal bottle bottom castable and preparation method thereof |
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Application publication date: 20150218 |
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