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Spinel composite chrome corundum brick for salt-containing wastewater incinerator and preparation method of spinel composite chrome corundum brick
The invention discloses a spinel composite chrome corundum brick for a salt-containing wastewater incinerator and a preparation method of the spinel composite chrome corundum brick. The spinel composite chrome corundum brick comprises the following components in parts by weight: 40-50 parts of fused chrome corundum with the particle size of less than or equal to 3mm, wherein w (Al2O3) + w (Cr2O3) is greater than or equal to 93%; the particle size of the fused white corundum is smaller than or equal to 3 mm, and w (Al2O3) is larger than or equal to 99%; 3-12 parts of chromium oxide micro powder with the particle size smaller than or equal to 8 microns, wherein w (Cr2O3) is larger than or equal to 99%; 2-12 parts of magnesium aluminate spinel micro powder with the particle size of less than or equal to 8 microns; the particle size of the alumina micro powder is smaller than or equal to 4 microns, and w (Al2O3) is larger than or equal to 99%; a binding agent: 2-5 parts of aluminum dihydrogen phosphate; according to the invention, Mg (Al1-xCrx) 2O4 composite spinel and a multi-element solid solution are formed in situ through magnesium aluminate spinel and chromium oxide in a matrix, so that the magnesium aluminate spinel refractory material has high refractoriness, high mechanical strength and excellent corrosion resistance, and especially has excellent corrosion resistance for alkali metal salt and the like.
一种含盐废水焚烧炉用尖晶石复合铬刚玉砖及其制备方法，按重量份各组分为：粒径≤3mm的电熔铬刚玉：其中w(Al2O3)+w(Cr2O3)≥93%，40‑50份；粒径≤3mm的电熔白刚玉，其中w(Al2O3)≥99%，30‑45份；粒径≤8μm的氧化铬微粉，其中w(Cr2O3)≥99%，3‑12份；粒径≤8μm的镁铝尖晶石微粉，2‑12份；粒径≤4μm的氧化铝微粉，其中w(Al2O3)≥99%，1‑8份；结合剂：磷酸二氢铝，2‑5份；经混料、成型、干燥、烧成步骤制成，本申请通过镁铝尖晶石与基质中的氧化铬原位形成了Mg(Al1‑xCrx)2O4复合尖晶石和多元固溶体，使其具备高耐火度、高机械强度和优异的抗侵蚀性，尤其针对碱金属盐等具备优秀的抗侵蚀性。
Spinel composite chrome corundum brick for salt-containing wastewater incinerator and preparation method of spinel composite chrome corundum brick
The invention discloses a spinel composite chrome corundum brick for a salt-containing wastewater incinerator and a preparation method of the spinel composite chrome corundum brick. The spinel composite chrome corundum brick comprises the following components in parts by weight: 40-50 parts of fused chrome corundum with the particle size of less than or equal to 3mm, wherein w (Al2O3) + w (Cr2O3) is greater than or equal to 93%; the particle size of the fused white corundum is smaller than or equal to 3 mm, and w (Al2O3) is larger than or equal to 99%; 3-12 parts of chromium oxide micro powder with the particle size smaller than or equal to 8 microns, wherein w (Cr2O3) is larger than or equal to 99%; 2-12 parts of magnesium aluminate spinel micro powder with the particle size of less than or equal to 8 microns; the particle size of the alumina micro powder is smaller than or equal to 4 microns, and w (Al2O3) is larger than or equal to 99%; a binding agent: 2-5 parts of aluminum dihydrogen phosphate; according to the invention, Mg (Al1-xCrx) 2O4 composite spinel and a multi-element solid solution are formed in situ through magnesium aluminate spinel and chromium oxide in a matrix, so that the magnesium aluminate spinel refractory material has high refractoriness, high mechanical strength and excellent corrosion resistance, and especially has excellent corrosion resistance for alkali metal salt and the like.
一种含盐废水焚烧炉用尖晶石复合铬刚玉砖及其制备方法，按重量份各组分为：粒径≤3mm的电熔铬刚玉：其中w(Al2O3)+w(Cr2O3)≥93%，40‑50份；粒径≤3mm的电熔白刚玉，其中w(Al2O3)≥99%，30‑45份；粒径≤8μm的氧化铬微粉，其中w(Cr2O3)≥99%，3‑12份；粒径≤8μm的镁铝尖晶石微粉，2‑12份；粒径≤4μm的氧化铝微粉，其中w(Al2O3)≥99%，1‑8份；结合剂：磷酸二氢铝，2‑5份；经混料、成型、干燥、烧成步骤制成，本申请通过镁铝尖晶石与基质中的氧化铬原位形成了Mg(Al1‑xCrx)2O4复合尖晶石和多元固溶体，使其具备高耐火度、高机械强度和优异的抗侵蚀性，尤其针对碱金属盐等具备优秀的抗侵蚀性。
Spinel composite chrome corundum brick for salt-containing wastewater incinerator and preparation method of spinel composite chrome corundum brick
一种含盐废水焚烧炉用尖晶石复合铬刚玉砖及其制备方法
ZHANG LIXIN (author) / LI SUPING (author) / XU ENXIA (author) / KANG XIN (author) / DENG JUNJIE (author) / XUE JUANJUAN (author)
2023-07-07
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2023
Chrome corundum brick for chemical salt-containing wastewater incinerator
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