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A platform for research: civil engineering, architecture and urbanism
Microporous magnesium-aluminum-chromium composite brick for waste incineration rotary kiln and preparation method of microporous magnesium-aluminum-chromium composite brick
The invention discloses a microporous magnesium-aluminum-chromium composite brick for a waste incineration rotary kiln and a preparation method of the microporous magnesium-aluminum-chromium composite brick. The microporous magnesium-aluminum-chromium composite brick is composed of 45-60% of magnesium-aluminum-chromium spinel sand, 15-30% of fused magnesia, 10-25% of high-purity magnesia fine powder, 1-5% of chrome green powder, 1-5% of SiC fine powder and 1-3% of PMMA microspheres. Uniformly mixing the high-purity magnesia fine powder, the chrome green powder, the SiC fine powder and the PMMA microspheres to obtain premixed powder; mixing the magnesium-aluminum-chromium spinel sand and the fused magnesia, adding the binding agent, continuously mixing, finally adding the premixed powder, uniformly mixing to obtain mixed pug, and molding the mixed pug into a magnesium-aluminum-chromium composite brick semi-finished product; and sequentially drying, sintering and cooling the semi-finished product to obtain the microporous magnesium-aluminum-chromium composite brick. The microporous magnesium-aluminum-chromium composite brick prepared by the invention has the advantages of low heat conductivity coefficient, good thermal shock resistance, excellent high-temperature performance, small density, light weight and the like, so that the problems that the existing brick is serious in peeling and easy to erode are solved.
本发明公开了一种垃圾焚烧回转窑用微孔镁铝铬复合砖及其制备方法。该微孔镁铝铬复合砖由镁铝铬尖晶石砂45～60％、电熔镁砂15～30％、高纯镁砂细粉10～25％、铬绿粉1～5％、SiC细粉1～5％和PMMA微球1～3％组成。将高纯镁砂细粉、铬绿粉、SiC细粉及PMMA微球混匀，得到预混合粉；然后将镁铝铬尖晶石砂和电熔镁砂混合,接着加入结合剂继续混合，最后加入预混合粉混匀，得到混合泥料,混合泥料成型为镁铝铬复合砖半成品；将半成品依次进行干燥、烧成、冷却，得到微孔镁铝铬复合砖。本发明制备所得微孔镁铝铬复合砖具有导热系数低、热震稳定性好、高温性能优异、密度小、重量轻等优点，由此解决了现有用砖剥落严重、易侵蚀的问题。
Microporous magnesium-aluminum-chromium composite brick for waste incineration rotary kiln and preparation method of microporous magnesium-aluminum-chromium composite brick
The invention discloses a microporous magnesium-aluminum-chromium composite brick for a waste incineration rotary kiln and a preparation method of the microporous magnesium-aluminum-chromium composite brick. The microporous magnesium-aluminum-chromium composite brick is composed of 45-60% of magnesium-aluminum-chromium spinel sand, 15-30% of fused magnesia, 10-25% of high-purity magnesia fine powder, 1-5% of chrome green powder, 1-5% of SiC fine powder and 1-3% of PMMA microspheres. Uniformly mixing the high-purity magnesia fine powder, the chrome green powder, the SiC fine powder and the PMMA microspheres to obtain premixed powder; mixing the magnesium-aluminum-chromium spinel sand and the fused magnesia, adding the binding agent, continuously mixing, finally adding the premixed powder, uniformly mixing to obtain mixed pug, and molding the mixed pug into a magnesium-aluminum-chromium composite brick semi-finished product; and sequentially drying, sintering and cooling the semi-finished product to obtain the microporous magnesium-aluminum-chromium composite brick. The microporous magnesium-aluminum-chromium composite brick prepared by the invention has the advantages of low heat conductivity coefficient, good thermal shock resistance, excellent high-temperature performance, small density, light weight and the like, so that the problems that the existing brick is serious in peeling and easy to erode are solved.
本发明公开了一种垃圾焚烧回转窑用微孔镁铝铬复合砖及其制备方法。该微孔镁铝铬复合砖由镁铝铬尖晶石砂45～60％、电熔镁砂15～30％、高纯镁砂细粉10～25％、铬绿粉1～5％、SiC细粉1～5％和PMMA微球1～3％组成。将高纯镁砂细粉、铬绿粉、SiC细粉及PMMA微球混匀，得到预混合粉；然后将镁铝铬尖晶石砂和电熔镁砂混合,接着加入结合剂继续混合，最后加入预混合粉混匀，得到混合泥料,混合泥料成型为镁铝铬复合砖半成品；将半成品依次进行干燥、烧成、冷却，得到微孔镁铝铬复合砖。本发明制备所得微孔镁铝铬复合砖具有导热系数低、热震稳定性好、高温性能优异、密度小、重量轻等优点，由此解决了现有用砖剥落严重、易侵蚀的问题。
Microporous magnesium-aluminum-chromium composite brick for waste incineration rotary kiln and preparation method of microporous magnesium-aluminum-chromium composite brick
一种垃圾焚烧回转窑用微孔镁铝铬复合砖及其制备方法
GUO XUELIANG (author) / LU QI (author) / ZUO HUAIQIANG (author) / MENG FENGLING (author) / ZHOU ZHENNI (author) / MA FUQIANG (author) / SHENG DATONG (author) / ZHAO LIFANG (author)
2024-04-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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