CN113511883A - 一种耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法 - Google Patents
一种耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法 Download PDFInfo
- Publication number
- CN113511883A CN113511883A CN202110978437.2A CN202110978437A CN113511883A CN 113511883 A CN113511883 A CN 113511883A CN 202110978437 A CN202110978437 A CN 202110978437A CN 113511883 A CN113511883 A CN 113511883A
- Authority
- CN
- China
- Prior art keywords
- chrome
- magnesite
- magnesia
- aluminum titanate
- brick
- 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
- 239000011449 brick Substances 0.000 title claims abstract description 79
- 229910000505 Al2TiO5 Inorganic materials 0.000 title claims abstract description 51
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 title claims abstract description 51
- 238000003723 Smelting Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000004576 sand Substances 0.000 claims abstract description 31
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 23
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 22
- 239000000654 additive Substances 0.000 claims abstract description 17
- 230000000996 additive effect Effects 0.000 claims abstract description 17
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 17
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 13
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000007670 refining Methods 0.000 claims abstract description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 58
- 239000000395 magnesium oxide Substances 0.000 claims description 29
- 239000011651 chromium Substances 0.000 claims description 25
- 238000002156 mixing Methods 0.000 claims description 23
- 238000010304 firing Methods 0.000 claims description 17
- 229910052804 chromium Inorganic materials 0.000 claims description 15
- 239000007767 bonding agent Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000001354 calcination Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000003345 natural gas Substances 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims 1
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052802 copper Inorganic materials 0.000 abstract description 9
- 239000010949 copper Substances 0.000 abstract description 9
- 239000002893 slag Substances 0.000 abstract description 9
- 239000003638 chemical reducing agent Substances 0.000 abstract description 7
- 230000035939 shock Effects 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 5
- 239000011230 binding agent Substances 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 229910052596 spinel Inorganic materials 0.000 abstract description 3
- 239000011029 spinel Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 229910052594 sapphire Inorganic materials 0.000 description 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 159000000003 magnesium salts Chemical class 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- NACUKFIFISCLOQ-UHFFFAOYSA-N [Mg].[Cr] Chemical compound [Mg].[Cr] NACUKFIFISCLOQ-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
- C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
- C04B2235/3234—Titanates, not containing zirconia
-
- 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
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/608—Green bodies or pre-forms with well-defined density
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明涉及一种耐用的有色治炼用含钛酸铝的镁铬砖，包括以下重量份数配比的原料：电熔镁铬砂50‑55％，南非铬矿25‑30％，烧结镁砂15‑20％，添加剂2‑5％，钛酸铝8‑10％和结合剂2‑5％，所述添加剂为α‑Al2O3和PC‑F减水剂，所述结合剂为非碱性的YTTJ，所述电熔镁铬砂的粒度为2‑4mm，所述南非铬矿的粒度为1mm。该耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法，通过在镁铬砖中引人α‑Al2O3微粉能有效提高砖的致密度强度、抗热震性和抗铜渣侵蚀性，尤其是同时加人PC‑F减水剂时，Al2O3会与镁铬砖中的CaO和Si02反应生成低熔点物质，并呈连续状分布，能够促进物质传输和烧结，同时又能生成部分镁铝尖晶石，占据部分孔隙，这些均使得镁铬砖的致密度、强度和抗铜渣侵蚀性提高。
Description
技术领域
本发明涉及镁铬砖制备技术领域，具体为一种耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法。
背景技术
在有色冶炼过程中，尽管遇到的熔体的熔化温度比钢铁工业遇到的熔体要低很多，但遇到的熔体不仅有氧化物熔渣、金属熔体还有硫化物熔体，这些熔体的粘度小以及流动性好，对内衬材料的渗透性强，镁铬质耐火材料因其高温强度高和抗侵蚀性能强，是目前艾萨炉、PS炼铜转炉和阳极炉，底吹炼铅炉等有色冶炼窑炉广泛使用的内衬材料。
为了抵抗熔渣的渗透，提高窑炉的使用寿命，减小耐火材料气孔孔径，增大润湿角，增加熔体的粘度是减少熔渣和金属熔体向耐火材料中渗透的重要途径，提高镁铬砖中的氧化铬含量是减少渗透的重要方法，但所取得的效果仍然有限，采用浸渍镁盐的方法以降低镁铬砖的显气孔率和气孔孔径是另一种常用的方法，但镁盐溶液中固态物质含量有限且在因处理时间过长损害致使镁砂水化和损害材料性能从而严重影响浸盐效果，并且镁铬砖在制备过程中会产生有毒害性的Cr6+，减少Cr6+对环境的污染和对人体的伤害，成为当今镁铬砖制备的重大问题，故此，提出一种耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法来解决上述的问题。
发明内容
(一)解决的技术问题
针对现有技术的不足，本发明提供了一种耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法，具备气孔低、抗渗透好和抗热震性好等优点，解决了镁盐溶液中固态物质含量有限且在因处理时间过长损害致使镁砂水化和损害材料性能从而严重影响浸盐效果，并且镁铬砖在制备过程中会产生有毒害性的Cr6+，减少Cr6+对环境的污染和对人体的伤害，成为当今镁铬砖制备的重大问题的问题。
(二)技术方案
为实现上述气孔低、抗渗透好和抗热震性好的目的，本发明提供如下技术方案：一种耐用的有色治炼用含钛酸铝的镁铬砖，包括以下重量份数配比的原料：
电熔镁铬砂50-55％，南非铬矿25-30％，烧结镁砂15-20％，添加剂2-5％，钛酸铝8-10％和结合剂2-5％。
进一步，所述添加剂为α-Al2O3和PC-F减水剂，所述结合剂为非碱性的YTTJ。
进一步，所述电熔镁铬砂的粒度为2-4mm，所述南非铬矿的粒度为1mm，所述烧结镁砂的粒度为1-2mm，所述钛酸铝的粒度为1mm。
进一步，所述电熔镁铬砂中MgO的含量为50％，所述烧结镁砂中的MgO的含量为97％。
进一步，所述α-Al2O3的粒度小于0.088mm。
进一步，所述电熔镁铬砂中Cr2O3的含量为20％，所述南非铬矿中Cr2O3的含量为45％。
本发明要解决的另一技术问题是提供一种耐用的有色治炼用含钛酸铝的镁铬砖的制备方法，包括以下步骤：
1)煅烧，将电熔镁铬砂，南非铬矿，烧结镁砂和钛酸铝进行细磨压坯煅烧后制作成细粉；
2)混合，将步骤1)中所得细粉通过混料机进行混料，混合5-10分钟，初步混合完成后，便可加入添加剂和结合剂进行充分混合，再进行充分混合10-20分钟；
3)压制，将步骤2)中所得物料采用630t-1000t的压力机压制成体积密度为3.30g/cm-3的标型砖坯；
4)干燥，将步骤3)中所得标型砖坯置于干燥机中，干燥至标型砖坯内部的残余水分为0.1％-0.5％；
5)烧制，将步骤4)中所得干燥后的砖坯在110m高温天然气隧道窑中于1700℃-1800℃保温6h-10h烧成，便可得到含钛酸铝的镁铬砖。
进一步，所述步骤5)在对砖坯进行烧制过程中需要在N2保护或者低氧条件下高温烧成。
(三)有益效果
与现有技术相比，本发明提供了一种耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法，具备以下有益效果：
1、该耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法，通过在镁铬砖中引人α-Al2O3微粉能有效提高砖的致密度强度、抗热震性和抗铜渣侵蚀性，尤其是同时加人PC-F减水剂时，Al2O3会与镁铬砖中的CaO和S i02反应生成低熔点物质，并呈连续状分布，能够促进物质传输和烧结，同时又能生成部分镁铝尖晶石，占据部分孔隙，这些均使得镁铬砖的致密度、强度和抗铜渣侵蚀性提高。
2、该耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法，通过钛酸铝的引入，可以很好的解决镁铬砖的热震稳定性差的问题，并且制备出的镁铬砖用于铜冶炼领域时，在Cr2O3含量保持一定的前提下，可显著提高窑炉的使用寿命，降低使用成本，同时能够有效控制Cr6+污染和有利于保护环境。
具体实施方式
下面将结合本发明的实施例，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一：一种耐用的有色治炼用含钛酸铝的镁铬砖，包括以下重量份数配比的原料：
电熔镁铬砂50％，南非铬矿25％，烧结镁砂15％，添加剂2％，钛酸铝8％和结合剂2％。
需要说明的是，添加剂为α-Al2O3和PC-F减水剂，结合剂为非碱性的YTTJ，电熔镁铬砂的粒度为2mm，南非铬矿的粒度为1mm，烧结镁砂的粒度为1mm，钛酸铝的粒度为1mm，电熔镁铬砂中MgO的含量为50％，烧结镁砂中的MgO的含量为97％，α-Al2O3的粒度小于0.088mm，电熔镁铬砂中Cr2O3的含量为20％，南非铬矿中Cr2O3的含量为45％。
一种耐用的有色治炼用含钛酸铝的镁铬砖的制备方法，包括以下步骤：
1)煅烧，将电熔镁铬砂，南非铬矿，烧结镁砂和钛酸铝进行细磨压坯煅烧后制作成细粉；
2)混合，将步骤1)中所得细粉通过混料机进行混料，混合5分钟，初步混合完成后，便可加入添加剂和结合剂进行充分混合，再进行充分混合10分钟；
3)压制，将步骤2)中所得物料采用630t的压力机压制成体积密度为3.30g/cm-3的标型砖坯；
4)干燥，将步骤3)中所得标型砖坯置于干燥机中，干燥至标型砖坯内部的残余水分为0.1％；
5)烧制，将步骤4)中所得干燥后的砖坯在110m高温天然气隧道窑中于1700℃保温6h烧成，便可得到含钛酸铝的镁铬砖，步骤5)在对砖坯进行烧制过程中需要在N2保护或者低氧条件下高温烧成。
实施例二：一种耐用的有色治炼用含钛酸铝的镁铬砖，包括以下重量份数配比的原料：
电熔镁铬砂55％，南非铬矿30％，烧结镁砂20％，添加剂5％，钛酸铝10％和结合剂5％。
需要说明的是，添加剂为α-Al2O3和PC-F减水剂，结合剂为非碱性的YTTJ，电熔镁铬砂的粒度为4mm，南非铬矿的粒度为1mm，烧结镁砂的粒度为2mm，钛酸铝的粒度为1mm，电熔镁铬砂中MgO的含量为50％，烧结镁砂中的MgO的含量为97％，α-Al2O3的粒度小于0.088mm，电熔镁铬砂中Cr2O3的含量为20％，南非铬矿中Cr2O3的含量为45％。
一种耐用的有色治炼用含钛酸铝的镁铬砖的制备方法，包括以下步骤：
1)煅烧，将电熔镁铬砂，南非铬矿，烧结镁砂和钛酸铝进行细磨压坯煅烧后制作成细粉；
2)混合，将步骤1)中所得细粉通过混料机进行混料，混合10分钟，初步混合完成后，便可加入添加剂和结合剂进行充分混合，再进行充分混合20分钟；
3)压制，将步骤2)中所得物料采用1000t的压力机压制成体积密度为3.30g/cm-3的标型砖坯；
4)干燥，将步骤3)中所得标型砖坯置于干燥机中，干燥至标型砖坯内部的残余水分为0.5％；
5)烧制，将步骤4)中所得干燥后的砖坯在110m高温天然气隧道窑中于1800℃保温10h烧成，便可得到含钛酸铝的镁铬砖，步骤5)在对砖坯进行烧制过程中需要在N2保护或者低氧条件下高温烧成。
实施例三：一种耐用的有色治炼用含钛酸铝的镁铬砖，包括以下重量份数配比的原料：
电熔镁铬砂53％，南非铬矿28％，烧结镁砂17％，添加剂3％，钛酸铝9％和结合剂4％。
需要说明的是，添加剂为α-Al2O3和PC-F减水剂，结合剂为非碱性的YTTJ，电熔镁铬砂的粒度为3mm，南非铬矿的粒度为1mm，烧结镁砂的粒度为1.5mm，钛酸铝的粒度为1mm，电熔镁铬砂中MgO的含量为50％，烧结镁砂中的MgO的含量为97％，α-Al2O3的粒度小于0.088mm，电熔镁铬砂中Cr2O3的含量为20％，南非铬矿中Cr2O3的含量为45％。
一种耐用的有色治炼用含钛酸铝的镁铬砖的制备方法，包括以下步骤：
1)煅烧，将电熔镁铬砂，南非铬矿，烧结镁砂和钛酸铝进行细磨压坯煅烧后制作成细粉；
2)混合，将步骤1)中所得细粉通过混料机进行混料，混合7.5分钟，初步混合完成后，便可加入添加剂和结合剂进行充分混合，再进行充分混合15分钟；
3)压制，将步骤2)中所得物料采用815t的压力机压制成体积密度为3.30g/cm-3的标型砖坯；
4)干燥，将步骤3)中所得标型砖坯置于干燥机中，干燥至标型砖坯内部的残余水分为0.3％；
5)烧制，将步骤4)中所得干燥后的砖坯在110m高温天然气隧道窑中于1850℃保温8h烧成，便可得到含钛酸铝的镁铬砖，步骤5)在对砖坯进行烧制过程中需要在N2保护或者低氧条件下高温烧成。
本发明的有益效果是：
(1)该耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法，通过在镁铬砖中引人α-Al2O3微粉能有效提高砖的致密度强度、抗热震性和抗铜渣侵蚀性，尤其是同时加人PC-F减水剂时，Al2O3会与镁铬砖中的CaO和Si02反应生成低熔点物质，并呈连续状分布，能够促进物质传输和烧结，同时又能生成部分镁铝尖晶石，占据部分孔隙，这些均使得镁铬砖的致密度、强度和抗铜渣侵蚀性提高。
(2)该耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法，通过钛酸铝的引入，可以很好的解决镁铬砖的热震稳定性差的问题，并且制备出的镁铬砖用于铜冶炼领域时，在Cr2O3含量保持一定的前提下，可显著提高窑炉的使用寿命，降低使用成本，同时能够有效控制Cr6+污染以及有利于保护环境。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。
Claims (8)
1.一种耐用的有色治炼用含钛酸铝的镁铬砖，其特征在于，包括以下重量份数配比的原料：
电熔镁铬砂50-55％，南非铬矿25-30％，烧结镁砂15-20％，添加剂2-5％，钛酸铝8-10％和结合剂2-5％。
2.根据权利要求1所述的一种耐用的有色治炼用含钛酸铝的镁铬砖，其特征在于，所述添加剂为α-Al2O3和PC-F减水剂，所述结合剂为非碱性的YTTJ。
3.根据权利要求1所述的一种耐用的有色治炼用含钛酸铝的镁铬砖，其特征在于，所述电熔镁铬砂的粒度为2-4mm，所述南非铬矿的粒度为1mm，所述烧结镁砂的粒度为1-2mm，所述钛酸铝的粒度为1mm。
4.根据权利要求1所述的一种耐用的有色治炼用含钛酸铝的镁铬砖，其特征在于，所述电熔镁铬砂中MgO的含量为50％，所述烧结镁砂中的MgO的含量为97％。
5.根据权利要求2所述的一种耐用的有色治炼用含钛酸铝的镁铬砖，其特征在于，所述α-Al2O3的粒度小于0.088mm。
6.根据权利要求1所述的一种耐用的有色治炼用含钛酸铝的镁铬砖，其特征在于，所述电熔镁铬砂中Cr2O3的含量为20％，所述南非铬矿中Cr2O3的含量为45％。
7.一种耐用的有色治炼用含钛酸铝的镁铬砖的制备方法，其特征在于，包括以下步骤：
1)煅烧，将电熔镁铬砂，南非铬矿，烧结镁砂和钛酸铝进行细磨压坯煅烧后制作成细粉；
2)混合，将步骤1)中所得细粉通过混料机进行混料，混合5-10分钟，初步混合完成后，便可加入添加剂和结合剂进行充分混合，再进行充分混合10-20分钟；
3)压制，将步骤2)中所得物料采用630t-1000t的压力机压制成体积密度为3.30g/cm-3的标型砖坯；
4)干燥，将步骤3)中所得标型砖坯置于干燥机中，干燥至标型砖坯内部的残余水分为0.1％-0.5％；
5)烧制，将步骤4)中所得干燥后的砖坯在110m高温天然气隧道窑中于1700℃-1800℃保温6h-10h烧成，便可得到含钛酸铝的镁铬砖。
8.根据权利要求7所述的一种耐用的有色治炼用含钛酸铝的镁铬砖的制备方法，其特征在于，所述步骤5)在对砖坯进行烧制过程中需要在N2保护或者低氧条件下高温烧成。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110978437.2A CN113511883A (zh) | 2021-08-25 | 2021-08-25 | 一种耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110978437.2A CN113511883A (zh) | 2021-08-25 | 2021-08-25 | 一种耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113511883A true CN113511883A (zh) | 2021-10-19 |
Family
ID=78068290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110978437.2A Pending CN113511883A (zh) | 2021-08-25 | 2021-08-25 | 一种耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113511883A (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340363A (zh) * | 2022-07-25 | 2022-11-15 | 中冶武汉冶金建筑研究院有限公司 | 一种用于水泥回转窑的直接结合镁铬砖及其制备方法 |
| CN116496074A (zh) * | 2023-03-20 | 2023-07-28 | 河南瑞泰耐火材料科技有限公司 | 一种镁铝钛锆砖及其制备方法 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731121A (zh) * | 2012-07-12 | 2012-10-17 | 辽宁中镁合金股份有限公司 | 高性能镁铝铬复合尖晶石砖及其制造方法 |
| CN106001532A (zh) * | 2016-05-16 | 2016-10-12 | 辽宁科技大学 | 一种刚玉-锆刚玉-钛酸铝质不烧不浸滑板砖及其制备方法 |
| CN106588051A (zh) * | 2016-12-15 | 2017-04-26 | 河南瑞泰耐火材料科技有限公司 | 一种低气孔镁铬砖及其制备方法 |
| CN106588050A (zh) * | 2016-12-15 | 2017-04-26 | 河南瑞泰耐火材料科技有限公司 | 一种有色冶炼用低气孔镁铬砖及其制备方法 |
-
2021
- 2021-08-25 CN CN202110978437.2A patent/CN113511883A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731121A (zh) * | 2012-07-12 | 2012-10-17 | 辽宁中镁合金股份有限公司 | 高性能镁铝铬复合尖晶石砖及其制造方法 |
| CN106001532A (zh) * | 2016-05-16 | 2016-10-12 | 辽宁科技大学 | 一种刚玉-锆刚玉-钛酸铝质不烧不浸滑板砖及其制备方法 |
| CN106588051A (zh) * | 2016-12-15 | 2017-04-26 | 河南瑞泰耐火材料科技有限公司 | 一种低气孔镁铬砖及其制备方法 |
| CN106588050A (zh) * | 2016-12-15 | 2017-04-26 | 河南瑞泰耐火材料科技有限公司 | 一种有色冶炼用低气孔镁铬砖及其制备方法 |
Non-Patent Citations (2)
| Title |
|---|
| 徐琳琳等: "《铜冶炼炉用镁铬砖的性能优化研究》", 《耐火材料》 * |
| 陈龙等: "《低Cr6+镁铬砖的研制与应用》", 《耐火材料》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340363A (zh) * | 2022-07-25 | 2022-11-15 | 中冶武汉冶金建筑研究院有限公司 | 一种用于水泥回转窑的直接结合镁铬砖及其制备方法 |
| CN116496074A (zh) * | 2023-03-20 | 2023-07-28 | 河南瑞泰耐火材料科技有限公司 | 一种镁铝钛锆砖及其制备方法 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2015371495B2 (en) | Refractories and use thereof | |
| US10227260B2 (en) | Refractories and use thereof | |
| CN105645977A (zh) | 一种特殊钢精炼用透气砖及其制备方法 | |
| CN113511883A (zh) | 一种耐用的有色治炼用含钛酸铝的镁铬砖及其制备方法 | |
| KR930005250B1 (ko) | 산질화 알루미늄 함유 내화물, 슬라이딩 노즐용 내화물 및 강 연속주조용 노즐 | |
| CN108484139B (zh) | 一种镁铬耐火材料的制备方法 | |
| WO2022237717A1 (zh) | 一种高纯度致密六铝酸钙系耐火材料及其制备方法 | |
| CN114195529A (zh) | 精炼钢包用高强镁质耐火泥 | |
| CN109592969B (zh) | 一种低铬电熔半再结合复合尖晶石砖 | |
| CN107352978B (zh) | 一种高强防渗砖及其制备工艺 | |
| US4999325A (en) | Rebonded fused brick | |
| JP5448144B2 (ja) | マグクロれんが | |
| KR101129265B1 (ko) | 마그네시아-실리카계 클링커 및 이를 함유하는 내화벽돌 | |
| JPH06172020A (ja) | マグネシア成分を含む耐火材料 | |
| CN115403356A (zh) | 一种水泥窑烧成带用镁铝锰尖晶石砖及其制备方法 | |
| CN117185824A (zh) | 一种钙钛矿—尖晶石混合精矿在制备耐火材料中的应用 | |
| JP2765458B2 (ja) | マグネシア・カ−ボン系耐火物 | |
| JP2006076863A (ja) | マグネシア−クロム−窒化硼素質不焼成耐火物 | |
| JPH11147755A (ja) | 定形耐火物 | |
| JP2024027731A (ja) | マグネシア・クロム質耐火れんが用原料配合物及びマグネシア・クロム質耐火れんがの製造方法 | |
| JPH07291716A (ja) | 塩基性耐火物 | |
| JPH11147776A (ja) | 不定形耐火物 | |
| SU1175922A1 (ru) | Огнеупор | |
| JPH0355427B2 (zh) | ||
| CS245751B2 (en) | Production method of burnt fireproof stones |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211019 |