CN1315306A - Refractory Al-Cr-C material - Google Patents
Refractory Al-Cr-C material Download PDFInfo
- Publication number
- CN1315306A CN1315306A CN 00110273 CN00110273A CN1315306A CN 1315306 A CN1315306 A CN 1315306A CN 00110273 CN00110273 CN 00110273 CN 00110273 A CN00110273 A CN 00110273A CN 1315306 A CN1315306 A CN 1315306A
- Authority
- CN
- China
- Prior art keywords
- graphite
- refractory
- aluminium
- composition
- antioxidant
- 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
Abstract
A refractory AlCr-C-SiC material is prepared from Al-Cr refractory (75-98.5 wt.%), graphite (1-15), antioxidizing agent (0.5-10) and binding agent (0.5-10). Its advantages include high refractory performance, raised high-temp. strength and thermal shock stability,and improved slag corrosion resistant and impervious properties.
Description
The invention belongs to the refractory materials production field, particularly a kind of refractory Al-Cr-C material.
At present, in weak reducing gas part of pyrotic smelting heavy metal, under the envrionment conditions of contact weak base, neutrality and acid slag, the refractory materials of use mainly contains: refractory materials and goods thereof such as picrochromite material, silicon carbide, carbon brick, alumina chrome brick.Though these refractory materials widespread uses, result of use under these conditions is unsatisfactory.Under low basicity slag envrionment conditions, owing to contain a large amount of SiO in the slag
2, magnesium in the picrochromite and SiO
2After the contact, form a large amount of low melting points, thereby the fusing point of picrochromite is reduced, pore increases, and permeability resistance and slag resistance obviously descend, and shorten work-ing life.Silicon carbide articles and carbon brick increase the production cost of smelting producer owing to cost an arm and a leg, and financial burden increases the weight of, but the more important thing is that the two all exists the lighter problem of monomer, floating easily when smelting heavy metal, can not well locate use, and carbon brick also has not oxidation resistant shortcoming.So under the complicated environmental condition of this pyrotic smelting heavy metal, weak reducing gas part, the big more options of people add the alumina chrome brick that chromite is produced with the alumina chrome brick of aluminium chromium slag production or with the aluminium vanadine.Though these two kinds of alumina chrome bricks can overcome some shortcoming of picrochromite, silicon carbide and carbon brick,, it also forms low melting point--calcium aluminate easily in the environment of contact CaO liquation, and it is liquefied being higher than under 1350 ℃ the condition, can not continue to use again.In addition, the thermal shock performance of alumina chrome brick is relatively poor, and water logging once promptly cracks, in the process of using, easily burst apart, damage fast, life-span weak point, result of use is also undesirable, and the apparent size error of product is bigger, through behind the high temperature sintering, product deforms, and error is difficult to reach≤and 1 millimeter, cause certain difficulty for the use of product.
The objective of the invention is to overcome the deficiency that above-mentioned refractory materials exists, solve existing refractory materials when smelting heavy metal, anti-weakly alkaline, neutrality and acid slag are indifferent, and under weak reducing gas part, antioxidant property is not good, problem such as impermeabilisation, anti-slag are invaded, thermal shock resistance difference and body float provides a kind of refractory Al-Cr-C material.
The present invention makes (by weight percentage) according to following prescription:
Aluminium chromium slag: 75～98.5%;
Graphite: 15～1%;
Antioxidant: 10～0.5%;
Wedding agent: 0.5～10% of above-mentioned materials gross weight; Wherein, aluminium chromium slag is the byproduct of pyrotic smelting chromium metal output, requires composition to be:
AL
2O
3〉=65%, Cr
2O
3〉=7%, other are impurity; Graphite requires composition to be:
C 〉=85%; Above-mentioned composition all by weight percentage.
The present invention can also make (by weight percentage) according to following prescription:
Aluminium vanadine: 45～96.5%;
Chromite: 30～2%;
Graphite: 15～1%;
Antioxidant: 10～0.5%;
Wedding agent: 0.5～10% of above-mentioned materials gross weight; Wherein the aluminium vanadine requires composition to be:
AL
2O
3〉=65%; Chromite requires composition to be:
Cr
2O
3〉=36%; Graphite requires composition to be:
C 〉=85%; Above-mentioned composition all by weight percentage.
Above-mentioned said antioxidant is silicon carbide, Pure Silicon Metal or metallic aluminium, requires composition to be:
SiC 〉=85%, Pure Silicon Metal Si 〉=95%, metallic aluminium AL 〉=95%.
Above-mentioned said wedding agent comprises organic bond and inorganic bonding agent.
The invention has the advantages that:
Adopt the aluminium chromia material as main raw material, and the aluminium chromia material mainly is made up of aluminum oxide and chromic oxide, these two kinds of oxide compounds all have rhomboidan, can generate unlimited solid solution, this sosoloid has good chemical stability, and has a high temperature oxidation resisting, high temperature resistance combustion gas erosion, acidproof, weak base, performances such as the chemical corrosion of salts solution, and fusing point height, hardness is big, wear resistance is good, and has an excellent electric insulating energy, add graphite therein, behind antioxidant and the wedding agent, just constituted a kind of new refractory materials--ALCr-C-SiC, this refractory materials is through overmolding, after dry and high temperature sintering is handled, can form new refractory body phase, its over-all properties has been compared further raising with the aluminium chrome refractory, it has higher refractoriness and hot strength, inner quality and visual appearance have all had very big improvement than alumina chrome brick, reached the technical requirements of pyrotic smelting heavy metal, be a kind of under weak oxide gas part condition over-all properties be tending towards perfect refractory materials, particularly when vaporization at high temperature, the gas that solid carbon in the refractory materials of the present invention produces has stoped the CaO slag to permeate in refractory materials, increased angle of wetting, simultaneously, also increased liquid phase viscosity, and, because stress-induced phase transformation, cause its inner tiny crack that produces, make stress relaxation, thereby improved thermal shock resistance, in weak reducing gas part environment, alkali-resistivity slag and anti-permeability performance have been improved.
Embodiments of the invention are provided below:
Embodiment 1:
The satisfactory aluminium chromium of composition slag, graphite and antioxidant SiC are pulverized respectively, and the broken granularity of aluminium chromium ground-slag is: 0～15 millimeter, the granularity that graphite is pulverized is: 0～5 millimeter, the granularity that antioxidant SiC pulverizes is≤1 millimeter; Above-mentioned materials is carried out magnetic separation respectively handle, remove ferromagnetic material wherein; Then, get aluminium chromium slag 985Kg, graphite 10Kg, antioxidant SiC 5Kg, inorganic bonding agent phosphoric acid 5Kg mix, stir to be aluminium chromium carbon (ALCr-C-SiC) refractory materials.
Embodiment 2:
The satisfactory aluminium chromium of composition slag, graphite and antioxidant SiC are pulverized respectively, and the granularity that aluminium chromium slag, graphite and antioxidant SiC pulverize is identical with embodiment 1; Again above-mentioned materials is carried out magnetic separation and handle, remove ferromagnetic material wherein; Then, get aluminium chromium slag 750Kg, graphite 150Kg, antioxidant SiC100Kg, organic bond resin 60Kg and mix, stirring is refractory Al-Cr-C material.
Embodiment 3:
The satisfactory aluminium chromium of composition slag, graphite and antioxidant SiC are pulverized respectively, and the granularity that aluminium chromium slag, graphite and antioxidant SiC pulverize is identical with embodiment 1; Again above-mentioned materials is carried out magnetic separation and handle, remove ferromagnetic material wherein; Then, get aluminium chromium slag 910Kg, graphite 10Kg, antioxidant SiC 80Kg, inorganic bonding agent phosphoric acid 50Kg mix, stirring is refractory Al-Cr-C material.
Embodiment 4:
The satisfactory aluminium vanadine of composition, chromite, graphite and antioxidant metallic aluminium are pulverized respectively, the granularity that the aluminium vanadine is pulverized is: 0～15 millimeter, the granularity that chromite is pulverized is: 0～5 millimeter, the granularity that graphite is pulverized is 0～3 millimeter, and the granularity that the antioxidant metallic aluminium is pulverized is≤1 millimeter; Above-mentioned materials is carried out magnetic separation respectively handle, remove ferromagnetic material wherein; Then, get aluminium vanadine 750Kg, chromite 200Kg, graphite 35Kg, metallic aluminium 15Kg, organic bond paper pulp 40Kg mixes, stirring is refractory Al-Cr-C material.
Embodiment 5:
The satisfactory aluminium vanadine of composition, chromite, graphite, antioxidant Pure Silicon Metal are pulverized respectively, and the granularity of pulverizing is identical with embodiment 4; Again above-mentioned materials is carried out magnetic separation respectively and handle, remove ferromagnetic material wherein; Then, get aluminium vanadine 700Kg, chromite 250Kg, graphite 30Kg, antioxidant Pure Silicon Metal 20Kg, inorganic bonding agent aluminum phosphate 60Kg mixes, stirring is refractory Al-Cr-C material.
Embodiment 6:
The satisfactory aluminium vanadine of composition, chromite, graphite, antioxidant Pure Silicon Metal are pulverized respectively, and the granularity of pulverizing is identical with embodiment 4; Again above-mentioned materials is carried out magnetic separation respectively and handle, remove ferromagnetic material wherein; Then, get aluminium vanadine 700Kg, chromite 250Kg, graphite 30Kg, antioxidant metallic aluminium 20Kg, inorganic bonding agent aluminum phosphate 25Kg mixes, stirring is refractory Al-Cr-C material.
Above-mentioned refractory Al-Cr-C material again through 1200～1850 ℃ of high temperature sinterings, can obtain the various moulded products of aluminium chromium carbon (ALCr-C-SiC) refractory materials after moulding, drying.
Claims (2)
1, a kind of refractory Al-Cr-C material is characterized in that, it makes (by weight percentage) according to following prescription:
Aluminium chromium slag: 75～98.5%;
Graphite: 15～1%;
Antioxidant: 10～0.5%;
Wedding agent: 0.5～10% of above-mentioned materials gross weight; Wherein, aluminium chromium slag is the byproduct of pyrotic smelting chromium metal output, requires composition to be:
AL
2O
3〉=6 5%, Cr
2O
3〉=7%, other are impurity; Graphite requires composition to be:
C 〉=85%; Above-mentioned composition all by weight percentage.
2, a kind of refractory Al-Cr-C material is characterized in that, it makes (by weight percentage) according to following prescription:
Aluminium vanadine: 45～96.5%;
Chromite: 30～2%;
Graphite: 15～1%;
Antioxidant: 10～0.5%;
Wedding agent: 0.5～10% of above-mentioned materials gross weight; Wherein the aluminium vanadine requires composition to be:
AL
2O
3〉=65%; Chromite requires composition to be:
Cr
2O
3〉=36%; Graphite requires composition to be:
C 〉=85%; Above-mentioned composition all by weight percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110273 CN1315306A (en) | 2000-03-30 | 2000-03-30 | Refractory Al-Cr-C material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110273 CN1315306A (en) | 2000-03-30 | 2000-03-30 | Refractory Al-Cr-C material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1315306A true CN1315306A (en) | 2001-10-03 |
Family
ID=4580279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00110273 Pending CN1315306A (en) | 2000-03-30 | 2000-03-30 | Refractory Al-Cr-C material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1315306A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100391904C (en) * | 2006-10-20 | 2008-06-04 | 赵文厚 | Refractory material of chromium solid solution |
| CN103638629A (en) * | 2013-12-10 | 2014-03-19 | 西南科技大学 | Process for integrally reducing solidified chromium slag |
| CN103910530A (en) * | 2014-02-19 | 2014-07-09 | 新疆八一钢铁股份有限公司 | Harmless treatment process for waste RH magnesite-chrome brick |
| TWI625405B (en) * | 2015-09-04 | 2018-06-01 | Osg Corporation | Hard film and hard film coating member |
| CN110015677A (en) * | 2019-05-17 | 2019-07-16 | 武汉科技大学 | It is a kind of using aluminium chromium slag as electro-corundum of major ingredient and preparation method thereof |
| CN114591077A (en) * | 2022-04-08 | 2022-06-07 | 厦门稀土材料研究所 | Chromic acid rare earth high-entropy ceramic powder for low-frequency sound absorption and composite material and application thereof |
-
2000
- 2000-03-30 CN CN 00110273 patent/CN1315306A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100391904C (en) * | 2006-10-20 | 2008-06-04 | 赵文厚 | Refractory material of chromium solid solution |
| CN103638629A (en) * | 2013-12-10 | 2014-03-19 | 西南科技大学 | Process for integrally reducing solidified chromium slag |
| CN103638629B (en) * | 2013-12-10 | 2015-11-04 | 西南科技大学 | The technique of integration reduction curing chromium slag |
| CN103910530A (en) * | 2014-02-19 | 2014-07-09 | 新疆八一钢铁股份有限公司 | Harmless treatment process for waste RH magnesite-chrome brick |
| TWI625405B (en) * | 2015-09-04 | 2018-06-01 | Osg Corporation | Hard film and hard film coating member |
| US10676810B2 (en) | 2015-09-04 | 2020-06-09 | Osg Corporation | Hard coating and hard coating-covered member |
| CN110015677A (en) * | 2019-05-17 | 2019-07-16 | 武汉科技大学 | It is a kind of using aluminium chromium slag as electro-corundum of major ingredient and preparation method thereof |
| CN114591077A (en) * | 2022-04-08 | 2022-06-07 | 厦门稀土材料研究所 | Chromic acid rare earth high-entropy ceramic powder for low-frequency sound absorption and composite material and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107879753B (en) | Silicon carbide-magnesium aluminate spinel composite refractory material | |
| CN102924095B (en) | Magnesium-zirconium-aluminum bricks used in vacuum degassing furnace, and preparation method thereof | |
| JPS6313955B2 (en) | ||
| US5559064A (en) | Chrome-free brick | |
| CN1283584C (en) | Sintered magnesing complex-phase refractory | |
| CN102115335A (en) | Novel abrasion resistant silicon-mullite-nitrogen brick for transition zones of rotary cement kiln | |
| US3141790A (en) | Burned basic refractory shapes | |
| CN116332631A (en) | Chromium-aluminum-magnesium-zirconium refractory brick and preparation method thereof | |
| JP3009705B2 (en) | Chromium oxide refractories with improved thermal shock resistance | |
| CN111620709A (en) | Silicon carbide composite refractory product containing rare earth oxide | |
| US4544643A (en) | Refractory fused chrome-alumina bricks and compositions made from a granular fused material and processes for their production | |
| CN1315306A (en) | Refractory Al-Cr-C material | |
| CN101851104B (en) | Zirconium oxide ceramic composite material for continuous casting water gap and preparation method thereof | |
| JP7197654B1 (en) | Sintering aid for producing silica brick, composite silica brick and method for producing the same | |
| CN110511003A (en) | A kind of Ti (C, N) solid solution combining corundum based refractory materials and preparation method thereof | |
| CN1117044C (en) | Refractory Cr-Al material | |
| CN100467423C (en) | Al-AlN-ZrO2 thermal shock resistant ceramic material | |
| CN1069612C (en) | Refractory Mg-Al-Cr material and its production process | |
| CN1715246A (en) | Chromium free refractory material for RH vacuum furnace lining | |
| CN105692661B (en) | A kind of magnesium oxide material and preparation method thereof | |
| CN101486572A (en) | Process for preparing ZrO2-Al2TiO5 composite material | |
| CN111892411B (en) | Nitride-silicon carbide-calcium hexaluminate composite refractory product and preparation method thereof | |
| US20020119885A1 (en) | Refractory shaped body with increased alkali resistance | |
| CN105347811A (en) | Aluminum-chromium-carbon fireproof material and preparation method thereof | |
| EP1044177A1 (en) | Dense refractories with improved thermal shock resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |