CN109232008A - A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified - Google Patents
A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified Download PDFInfo
- Publication number
- CN109232008A CN109232008A CN201811339212.7A CN201811339212A CN109232008A CN 109232008 A CN109232008 A CN 109232008A CN 201811339212 A CN201811339212 A CN 201811339212A CN 109232008 A CN109232008 A CN 109232008A
- Authority
- CN
- China
- Prior art keywords
- castable refractory
- catalyst
- mass parts
- impregnated
- fiber
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- C04B35/803—
-
- 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
Abstract
The present invention relates to a kind of modified carbon containing castable refractories and preparation method thereof of carbon nano-fiber.Its technical solution is: the catalyst of 0.5~2.0 mass parts being mixed with the dehydrated alcohol of 100 mass parts, magnetic agitation obtains catalyst solution.The castable refractory of 100 mass parts is impregnated in the catalyst solution, dip time is 5~10min, dry, the castable refractory for being impregnated with catalyst after being dried.The vinyon of 1~4 mass parts is mixed with the castable refractory for being impregnated with catalyst after the drying of 100 mass parts, in being heat-treated 2~4h in high temperature furnace under the conditions of Ar gas atmosphere and 500~700 DEG C, the modified carbon containing castable refractory of carbon nano-fiber is made.The present invention has the characteristics that simple process, with short production cycle, low in cost and environmental-friendly, the modified carbon containing castable refractory carbon content of prepared carbon nano-fiber are low, good to carbon-free molten steel pollution and molten slag erosion performance resistant to high temperatures.
Description
Technical field
The present invention relates to a kind of carbon containing technical field of refractory castable.More particularly to a kind of carbon nano-fiber modification is carbon containing
Castable refractory and preparation method thereof.
Background technique
Carbon containing sizing refractory material is due to excellent thermal shock resistance and good resistance to slag corrosion, in steel and iron industry
It is widely used, main application range has: 1) blast furnace ironmaking refractory material, such as Blast Furnace Bottom, iron tap channel position；
2) liner body of converter, electric furnace and ladle；3) continuous casting critical component, such as the mouth of a river, slide plate, stopper；4) earthenware of smelting metal
Crucible.
Carbon containing castable refractory because its convenient construction, without high temperature firing and structural integrity it is good, in refractory material total amount
Middle proportion is higher and higher.But due to the non wettability of carbon material and water, and it is difficult to that containing with preferable service performance is made
Carbon castable refractory.In addition, traditional carbon containing sizing refractory material carbon content is high, the analysis of carbon easily occurs in use
Out, make molten steel recarburization, steel are polluted.
Summary of the invention
The present invention is directed to overcome the shortcomings of existing carbon containing amorphous refractory, and it is an object of the present invention to provide a kind of preparation process is simple
The preparation method of the modified carbon containing castable refractory of carbon nano-fiber single, with short production cycle, low in cost and environmental-friendly；With
The carbon containing castable refractory carbon content that the carbon nano-fiber of this method preparation is modified is low, to carbon-free molten steel pollution and molten slag resistant to high temperatures
Erosion performance is good.
The step of the technical solution adopted in the present invention, is:
Step 1: the catalyst of 0.5~2.0 mass parts is mixed with the dehydrated alcohol of 100 mass parts, magnetic agitation 30~
60min obtains catalyst solution.
Step 2: the castable refractory of 100 mass parts is impregnated in the catalyst solution, dip time is 5~
10min obtains the castable refractory for being impregnated with catalyst；Again by the castable refractory for being impregnated with catalyst in 110 DEG C of items
Dry 24~36h, the castable refractory for being impregnated with catalyst after being dried under part.
Step 3: by catalyst is impregnated with after the drying of the vinyon of 1~4 mass parts and 100 mass parts
Castable refractory mixing, be placed in high temperature furnace, under the conditions of Ar gas atmosphere and 500~700 DEG C be heat-treated 2~4h, be made carbon
The modified carbon containing castable refractory of nanofiber.
The catalyst is one of iron, cobalt and nitrate of nickel, or is one of the chloride of iron, cobalt and nickel.
The castable refractory is Al2O3Refractory casting material, MgO refractory casting material and Al2O3- MgO matter fire resisting is poured
One of material feeding.
The vinyon is in linear low-density polyethylene plastic, LDPE: Low-density polyethylene plastics and high density polyethylene (HDPE)
One kind.
Due to the adoption of the above technical scheme, the present invention has following good effect compared with prior art:
1) present invention will mix after the castable refractory being impregnated in catalyst solution drying with vinyon, be heat-treated
The modified carbon containing castable refractory (hereinafter referred to as carbon containing castable refractory) of carbon nano-fiber, simple process and production week are made afterwards
Phase is short.
2) vinyon that the present invention uses is the main source of " white pollution " for daily necessities；Using urging
Vinyon is converted carbon nano-fiber by change technology, and is modified to castable refractory, it can be achieved that waste resource follows
Ring recycles, environmental-friendly.
3) present invention is modified castable refractory by carbon nano-fiber, so that prepared carbon nano-fiber is modified
Carbon containing castable refractory excellent slag corrosion resistant to high temperatures can be possessed under conditions of carbon content extremely low (C < 0.2wt%)
Energy.
4) the modified carbon containing castable refractory of carbon nano-fiber prepared by the present invention, convenient construction, save manpower at
This, the feature good without high temperature firing and structural integrity saves the energy；The present invention in use will not cause molten steel
Carbon pollution.
Therefore, the present invention has the characteristics that simple process, with short production cycle, low in cost and environmental-friendly, prepared
The modified carbon containing castable refractory carbon content of carbon nano-fiber is low, good to carbon-free molten steel pollution and molten slag erosion performance resistant to high temperatures
Specific embodiment
The invention will be further described With reference to embodiment, not to the limitation of its protection scope.
Embodiment 1
A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified.The preparation method is:
Step 1: the catalyst of 0.5~1.0 mass parts is mixed with the dehydrated alcohol of 100 mass parts, magnetic agitation 30~
60min obtains catalyst solution.
Step 2: the castable refractory of 100 mass parts is impregnated in the catalyst solution, dip time is 5~
10min obtains the castable refractory for being impregnated with catalyst；Again by the castable refractory for being impregnated with catalyst in 110 DEG C of items
Dry 24~36h, the castable refractory for being impregnated with catalyst after being dried under part.
Step 3: by catalyst is impregnated with after the drying of the vinyon of 1~2 mass parts and 100 mass parts
Castable refractory mixing, be placed in high temperature furnace, under the conditions of Ar gas atmosphere and 500~700 DEG C be heat-treated 2~4h, be made carbon
The modified carbon containing castable refractory of nanofiber.
In the present embodiment, the catalyst is ferric nitrate；The castable refractory is Al2O3Refractory casting material；It is described poly-
Vinyl plastics are linear low-density polyethylene plastic.
Embodiment 2
A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified.The preparation method is:
Step 1: the catalyst of 1.0~1.5 mass parts is mixed with the dehydrated alcohol of 100 mass parts, magnetic agitation 30~
60min obtains catalyst solution.
Step 2: the castable refractory of 100 mass parts is impregnated in the catalyst solution, dip time is 5~
10min obtains the castable refractory for being impregnated with catalyst；Again by the castable refractory for being impregnated with catalyst in 110 DEG C of items
Dry 24~36h, the castable refractory for being impregnated with catalyst after being dried under part.
Step 3: by catalyst is impregnated with after the drying of the vinyon of 2~3 mass parts and 100 mass parts
Castable refractory mixing, be placed in high temperature furnace, under the conditions of Ar gas atmosphere and 500~700 DEG C be heat-treated 2~4h, be made carbon
The modified carbon containing castable refractory of nanofiber.
In the present embodiment, the catalyst is ferric nitrate；The castable refractory is Al2O3Refractory casting material；It is described poly-
Vinyl plastics are linear low-density polyethylene plastic.
Embodiment 3
A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified.The preparation method is:
Step 1: the catalyst of 1.0~2.0 mass parts is mixed with the dehydrated alcohol of 100 mass parts, magnetic agitation 30~
60min obtains catalyst solution.
Step 2: the castable refractory of 100 mass parts is impregnated in the catalyst solution, dip time is 5~
10min obtains the castable refractory for being impregnated with catalyst；Again by the castable refractory for being impregnated with catalyst in 110 DEG C of items
Dry 24~36h, the castable refractory for being impregnated with catalyst after being dried under part.
Step 3: by catalyst is impregnated with after the drying of the vinyon of 3~4 mass parts and 100 mass parts
Castable refractory mixing, be placed in high temperature furnace, under the conditions of Ar gas atmosphere and 500~700 DEG C be heat-treated 2~4h, be made carbon
The modified carbon containing castable refractory of nanofiber.
In the present embodiment, the catalyst is cobalt nitrate；The castable refractory is Al2O3Refractory casting material；It is described poly-
Vinyl plastics are linear low-density polyethylene plastic.
Embodiment 4
A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified.The preparation method is:
Step 1: the catalyst of 1.5~2.0 mass parts is mixed with the dehydrated alcohol of 100 mass parts, magnetic agitation 30~
60min obtains catalyst solution.
Step 2: the castable refractory of 100 mass parts is impregnated in the catalyst solution, dip time is 5~
10min obtains the castable refractory for being impregnated with catalyst；Again by the castable refractory for being impregnated with catalyst in 110 DEG C of items
Dry 24~36h, the castable refractory for being impregnated with catalyst after being dried under part.
Step 3: by catalyst is impregnated with after the drying of the vinyon of 3~4 mass parts and 100 mass parts
Castable refractory mixing, be placed in high temperature furnace, under the conditions of Ar gas atmosphere and 500~700 DEG C be heat-treated 2~4h, be made carbon
The modified carbon containing castable refractory of nanofiber.
In the present embodiment, the catalyst is nickel nitrate；The castable refractory is Al2O3Refractory casting material；It is described poly-
Vinyl plastics are linear low-density polyethylene plastic.
Embodiment 5
A kind of carbon containing castable refractory preparation method that carbon nano-fiber is modified.The preparation method is:
Step 1: the catalyst of 1.5~2.0 mass parts is mixed with the dehydrated alcohol of 100 mass parts, magnetic agitation 30~
60min obtains catalyst solution.
Step 2: the castable refractory of 100 mass parts is impregnated in the catalyst solution, dip time is 5~
10min obtains the castable refractory for being impregnated with catalyst；Again by the castable refractory for being impregnated with catalyst in 110 DEG C of items
Dry 24~36h, the castable refractory for being impregnated with catalyst after being dried under part.
Step 3: by catalyst is impregnated with after the drying of the vinyon of 3~4 mass parts and 100 mass parts
Castable refractory mixing, be placed in high temperature furnace, under the conditions of Ar gas atmosphere and 500~700 DEG C be heat-treated 2~4h, be made carbon
The modified carbon containing castable refractory of nanofiber.
In the present embodiment, the catalyst is iron chloride；The castable refractory is Al2O3Refractory casting material；It is described poly-
Vinyl plastics are LDPE: Low-density polyethylene plastics.
Embodiment 6
A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified.
The present embodiment is in addition to the castable refractory is MgO refractory casting material, remaining is the same as embodiment 5.
Embodiment 7
A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified.The preparation method is:
Step 1: the catalyst of 1.5~2.0 mass parts is mixed with the dehydrated alcohol of 100 mass parts, magnetic agitation 30~
60min obtains catalyst solution.
Step 2: the castable refractory of 100 mass parts is impregnated in the catalyst solution, dip time is 5~
10min obtains the castable refractory for being impregnated with catalyst；Again by the castable refractory for being impregnated with catalyst in 110 DEG C of items
Dry 24~36h, the castable refractory for being impregnated with catalyst after being dried under part.
Step 3: by catalyst is impregnated with after the drying of the vinyon of 3~4 mass parts and 100 mass parts
Castable refractory mixing, be placed in high temperature furnace, under the conditions of Ar gas atmosphere and 500~700 DEG C be heat-treated 2~4h, be made carbon
The modified carbon containing castable refractory of nanofiber.
In the present embodiment, the catalyst is cobalt chloride；The castable refractory is Al2O3- MgO refractory casting material；Institute
Stating vinyon is high-density polyethylene plastics.
Embodiment 8
A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified.
The present embodiment is in addition to the catalyst is nickel chloride, remaining is the same as embodiment 7.
Step 1: the catalyst of 1.5~2.0 mass parts is mixed with the dehydrated alcohol of 100 mass parts, magnetic agitation 30~
60min obtains catalyst solution.
Step 2: the castable refractory of 100 mass parts is impregnated in the catalyst solution, dip time is 5~
10min obtains the castable refractory for being impregnated with catalyst；Again by the castable refractory for being impregnated with catalyst in 110 DEG C of items
Dry 24~36h, the castable refractory for being impregnated with catalyst after being dried under part.
Step 3: by catalyst is impregnated with after the drying of the vinyon of 3~4 mass parts and 100 mass parts
Castable refractory mixing, be placed in high temperature furnace, under the conditions of Ar gas atmosphere and 500~700 DEG C be heat-treated 2~4h, be made carbon
The modified carbon containing castable refractory of nanofiber.
In the present embodiment, the catalyst is nickel chloride；The castable refractory is Al2O3- MgO refractory casting material；Institute
Stating vinyon is high-density polyethylene plastics.
Present embodiment has following good effect compared with prior art:
1) present embodiment will mix after the castable refractory being impregnated in catalyst solution drying with vinyon
It closes, the modified carbon containing castable refractory (hereinafter referred to as carbon containing castable refractory) of carbon nano-fiber, technique letter is made after heat treatment
It is single and with short production cycle.
2) vinyon that present embodiment uses is the main next of " white pollution " for daily necessities
Source；Carbon nano-fiber is converted for vinyon using catalysis technique, and castable refractory is modified, it can be achieved that discarded
The cycling and reutilization of resource, it is environmental-friendly.
3) present embodiment is modified castable refractory by carbon nano-fiber, so that prepared carbon nanometer
The carbon containing castable refractory of fibre modification can possess excellent resistant to high temperatures molten under conditions of carbon content extremely low (C < 0.2wt%)
Scouring performance.
4) the modified carbon containing castable refractory of the carbon nano-fiber prepared by present embodiment, convenient construction, section
It saves labor costs, the feature good without high temperature firing and structural integrity saves the energy；Present embodiment is in use process
In carbon will not be caused to pollute molten steel.
Therefore, present embodiment has the characteristics that simple process, with short production cycle, low in cost and environmental-friendly,
The modified carbon containing castable refractory carbon content of prepared carbon nano-fiber is low, corrodes carbon-free molten steel pollution and molten slag resistant to high temperatures
It is functional.
Claims (5)
1. a kind of preparation method of the modified carbon containing castable refractory of carbon nano-fiber, it is characterised in that the preparation method is:
Step 1: the catalyst of 0.5~2.0 mass parts is mixed with the dehydrated alcohol of 100 mass parts, magnetic agitation 30~
60min obtains catalyst solution；
Step 2: the castable refractory of 100 mass parts is impregnated in the catalyst solution, dip time is 5~10min,
Obtain the castable refractory for being impregnated with catalyst；The castable refractory for being impregnated with catalyst is done under the conditions of 110 DEG C again
Dry 24~36h, the castable refractory for being impregnated with catalyst after being dried；
Step 3: the vinyon of 1~4 mass parts is impregnated with the resistance to of catalyst with after the drying of 100 mass parts
Fiery castable mixing, is placed in high temperature furnace, 2~4h is heat-treated under the conditions of Ar gas atmosphere and 500~700 DEG C, carbon nanometer is made
The carbon containing castable refractory of fibre modification.
2. the preparation method of the modified carbon containing castable refractory of carbon nano-fiber according to claim 1, it is characterised in that
The catalyst is one of iron, cobalt and nitrate of nickel, or is one of the chloride of iron, cobalt and nickel.
3. the preparation method of the modified carbon containing castable refractory of carbon nano-fiber according to claim 1, it is characterised in that
The castable refractory is Al2O3Refractory casting material, MgO refractory casting material and Al2O3One in-MgO refractory casting material
Kind.
4. the preparation method of the modified carbon containing castable refractory of carbon nano-fiber according to claim 1, it is characterised in that
The vinyon is one of linear low-density polyethylene plastic, LDPE: Low-density polyethylene plastics and high density polyethylene (HDPE).
5. a kind of modified carbon containing castable refractory of carbon nano-fiber, it is characterised in that the carbon nano-fiber is modified carbon containing resistance to
Fiery castable be any one of according to claim 1~4 described in the modified carbon containing castable refractory of carbon nano-fiber preparation
The modified carbon containing castable refractory of carbon nano-fiber prepared by method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811339212.7A CN109232008A (en) | 2018-11-12 | 2018-11-12 | A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811339212.7A CN109232008A (en) | 2018-11-12 | 2018-11-12 | A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109232008A true CN109232008A (en) | 2019-01-18 |
Family
ID=65078134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811339212.7A Pending CN109232008A (en) | 2018-11-12 | 2018-11-12 | A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109232008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666723A (en) * | 2021-08-25 | 2021-11-19 | 江苏江能新材料科技有限公司 | Carbon nanofiber modified carbon-containing refractory castable and preparation method thereof |
| CN114349524A (en) * | 2022-01-12 | 2022-04-15 | 郑州汇盛耐火材料有限公司 | Carbon nanofiber modified carbon-containing refractory castable and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011868A (en) * | 2013-01-04 | 2013-04-03 | 武汉科技大学 | Al2O3-SiC-C iron runner casting material and preparation method thereof |
| US20130126794A1 (en) * | 2010-07-08 | 2013-05-23 | Industry Foundation Of Chonnam National University | Carbon nanofiber containing metal oxide or intermetallic compound, preparation method thereof, and lithium secondary battery using same |
| CN104072177A (en) * | 2014-07-16 | 2014-10-01 | 武汉科技大学 | Casting material containing carbon fiber for blast furnace tapping channel and preparation method thereof |
| CN107244924A (en) * | 2017-03-23 | 2017-10-13 | 武汉科技大学 | A kind of high micropore electric forging coal base brick fuel of high heat conduction and preparation method thereof |
| CN107934938A (en) * | 2017-12-06 | 2018-04-20 | 武汉光谷环保科技股份有限公司 | The method that two-phase method catalytic pyrolysis waste plastic prepares carbon nanotubes |
| CN108046239A (en) * | 2018-01-15 | 2018-05-18 | 武汉科技大学 | A kind of high length-diameter ratio carbon nanotubes and preparation method thereof |
-
2018
- 2018-11-12 CN CN201811339212.7A patent/CN109232008A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130126794A1 (en) * | 2010-07-08 | 2013-05-23 | Industry Foundation Of Chonnam National University | Carbon nanofiber containing metal oxide or intermetallic compound, preparation method thereof, and lithium secondary battery using same |
| CN103011868A (en) * | 2013-01-04 | 2013-04-03 | 武汉科技大学 | Al2O3-SiC-C iron runner casting material and preparation method thereof |
| CN104072177A (en) * | 2014-07-16 | 2014-10-01 | 武汉科技大学 | Casting material containing carbon fiber for blast furnace tapping channel and preparation method thereof |
| CN107244924A (en) * | 2017-03-23 | 2017-10-13 | 武汉科技大学 | A kind of high micropore electric forging coal base brick fuel of high heat conduction and preparation method thereof |
| CN107934938A (en) * | 2017-12-06 | 2018-04-20 | 武汉光谷环保科技股份有限公司 | The method that two-phase method catalytic pyrolysis waste plastic prepares carbon nanotubes |
| CN108046239A (en) * | 2018-01-15 | 2018-05-18 | 武汉科技大学 | A kind of high length-diameter ratio carbon nanotubes and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| JONATHAN C. ACOMB ET AL.: "The use of different metal catalysts for the simultaneous production of carbon nanotubes and hydrogen from pyrolysis of plastic feedstocks", 《APPLIED CATALYSIS B: ENVIRONMENTAL》 * |
| 郑扬帆等: "高分子塑料催化裂解制备碳纳米管的研究进展", 《耐火材料》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666723A (en) * | 2021-08-25 | 2021-11-19 | 江苏江能新材料科技有限公司 | Carbon nanofiber modified carbon-containing refractory castable and preparation method thereof |
| CN113666723B (en) * | 2021-08-25 | 2022-12-27 | 江苏江能新材料科技有限公司 | Carbon nanofiber modified carbon-containing refractory castable and preparation method thereof |
| CN114349524A (en) * | 2022-01-12 | 2022-04-15 | 郑州汇盛耐火材料有限公司 | Carbon nanofiber modified carbon-containing refractory castable and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Fu et al. | Fabrication of CaO–MgO–Al2O3 materials from metallurgical waste industrial residue and their potential usage in MgO–C refractories | |
| CN101811880A (en) | Carbon-free refractory bricks and preparation method thereof | |
| CN107032805A (en) | A kind of ladle Ultra-low carbon Periclase spinel carbon brick and preparation method | |
| CN102765951A (en) | Magnesium-calcium-titanium-carbon brick and preparation method thereof | |
| CN102719574A (en) | Converter slag stability modifier and application method thereof | |
| CN103553678B (en) | Refractory castable for tundish cover | |
| CN109232008A (en) | A kind of carbon containing castable refractory and preparation method thereof that carbon nano-fiber is modified | |
| CN103506614A (en) | Drainage agent special for high manganese steel | |
| CN110436946A (en) | A kind of acidproof spray paint for hot-blast stove vault high temperature position | |
| CN102674856B (en) | Method for preparing tundish fireproof spray paint by using steel slag tailings | |
| CN106904980A (en) | A kind of magnesium aluminum spinel pouring material of blast furnace iron outlet groove slag corrosion resistance | |
| CN106045530B (en) | Refractory material for blast furnace tapping channel by adopting waste refractory material | |
| CN108911767A (en) | A kind of RH refining furnace key position corundum system unburned brick and preparation method thereof | |
| CN105777160B (en) | A kind of ladle slag line MgO-Cr7C3Brick and preparation method thereof | |
| CN105753490A (en) | Tap hole medium-temperature-sintering environment-friendly stemming for large- and medium-sized blast furnaces and preparation method of tap hole medium-temperature-sintering environment-friendly stemming | |
| CN105272310A (en) | Aluminum-carbon carborundum brick for torpedo ladle and preparation method thereof | |
| CN108395228A (en) | Not oil immersion chromium magnalium is burnt into without carbonaceous sliding plate brick and preparation method thereof | |
| CN107602087A (en) | A kind of fire resisting low carbon magnesia carbon brick | |
| CN103449803B (en) | Quick-drying anti-explosion refractory castable | |
| CN102051482B (en) | Process for directly reducing ferrochrome powder ore by microwave and crucible special for same | |
| CN102276266A (en) | Low-carbon magnesia carbon brick | |
| CN104649691B (en) | A kind of anti-thermal shock magnesia-spinel brick and preparation method thereof | |
| CN103304245B (en) | Unfired ferro silicon nitride-alumina composite carbon-free sliding plate and preparation method thereof | |
| CN103031409B (en) | Novel process of steelmaking deoxidization by utilizing precipitator dust of refining furnace | |
| CN104163637A (en) | Carbon composite fireproof material for blast furnace iron runner and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190118 |
|
| WD01 | Invention patent application deemed withdrawn after publication |