Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Magnesium-chromium refractory brick and preparation method thereof
The magnesium-chromium refractory brick comprises an inner layer and an outer layer, the inner layer comprises the following raw materials in parts by weight: 10-20 parts of 3-6mm magnesium-chromium residual bricks, 30-40 parts of 1-3mm magnesium-chromium residual bricks, 20-30 parts of 0-1mm magnesium-chromium residual bricks, 10-20 parts of 200-mesh 97 high-purity magnesia, 5-15 parts of 325-mesh refined chromium ore, 1-5 parts of 325-mesh alpha-Al2O3 micro powder, 1-3 parts of boric acid and 2-5 parts of a water-retaining agent; the outer layer is prepared from the following raw materials in parts by weight: 5 to 15 parts of fused magnesite with the particle size of 3 to 6 mm, 20 to 30 parts of fused magnesite with the particle size of 1 to 3 mm, 10 to 20 parts of fused magnesite with the particle size of 0 to 1 mm, 20 to 30 parts of 97 high-purity magnesite with the particle size of 200 meshes, 10 to 20 parts of refined chromium ore with the particle size of 325 meshes, 1 to 5 parts of alpha-Al2O3 micro powder with the particle size of 325 meshes, 1 to 3 parts of boric acid, 1 to 5 parts of silica fume with the particle size of 325 meshes and 2 to 5 parts of a water-retaining agent. The magnesium-chromium residual bricks are used as main raw materials of the inner layer, meanwhile, the adding amount of the inner layer refined chromium ore is reduced, the consumption of refractory materials is reduced, and the cost is reduced. In the production process, the fluid resin is smeared outside the inner-layer blank, and the outer-layer raw material is coated in an incompletely dry state, so that the interlayer binding force is improved while the inner layer is subjected to waterproof protection, and cracks are prevented from occurring in the brick.
本发明涉及一种镁铬耐火砖，包括内层和外层，内层原料按重量份包括3‑6mm镁铬残砖10‑20份，1‑3mm镁铬残砖30‑40份，0‑1mm镁铬残砖20‑30份，200目97高纯镁砂10‑20份，325目精铬矿5‑15份，325目α‑Al2O3微粉1‑5份，硼酸1‑3份，保水剂2‑5份；外层原料按重量份包括3‑6mm电熔镁砂5‑15份，1‑3mm电熔镁砂20‑30份，0‑1mm电熔镁砂10‑20份，200目97高纯镁砂20‑30份，325目精铬矿10‑20份，325目α‑Al2O3微粉1‑5份，硼酸1‑3份，325目硅灰1‑5份，保水剂2‑5份。本发明采用镁铬残砖作为内层主要原料，同时减少内层精铬矿的加入量，降低了耐材的消耗，降低了成本。在生产过程中内层坯料外涂抹流体树脂，在未完全干燥的状态下包覆外层原料，对内层防水保护的同时提高层间结合力，防止砖中出现裂纹。
Magnesium-chromium refractory brick and preparation method thereof
The magnesium-chromium refractory brick comprises an inner layer and an outer layer, the inner layer comprises the following raw materials in parts by weight: 10-20 parts of 3-6mm magnesium-chromium residual bricks, 30-40 parts of 1-3mm magnesium-chromium residual bricks, 20-30 parts of 0-1mm magnesium-chromium residual bricks, 10-20 parts of 200-mesh 97 high-purity magnesia, 5-15 parts of 325-mesh refined chromium ore, 1-5 parts of 325-mesh alpha-Al2O3 micro powder, 1-3 parts of boric acid and 2-5 parts of a water-retaining agent; the outer layer is prepared from the following raw materials in parts by weight: 5 to 15 parts of fused magnesite with the particle size of 3 to 6 mm, 20 to 30 parts of fused magnesite with the particle size of 1 to 3 mm, 10 to 20 parts of fused magnesite with the particle size of 0 to 1 mm, 20 to 30 parts of 97 high-purity magnesite with the particle size of 200 meshes, 10 to 20 parts of refined chromium ore with the particle size of 325 meshes, 1 to 5 parts of alpha-Al2O3 micro powder with the particle size of 325 meshes, 1 to 3 parts of boric acid, 1 to 5 parts of silica fume with the particle size of 325 meshes and 2 to 5 parts of a water-retaining agent. The magnesium-chromium residual bricks are used as main raw materials of the inner layer, meanwhile, the adding amount of the inner layer refined chromium ore is reduced, the consumption of refractory materials is reduced, and the cost is reduced. In the production process, the fluid resin is smeared outside the inner-layer blank, and the outer-layer raw material is coated in an incompletely dry state, so that the interlayer binding force is improved while the inner layer is subjected to waterproof protection, and cracks are prevented from occurring in the brick.
本发明涉及一种镁铬耐火砖，包括内层和外层，内层原料按重量份包括3‑6mm镁铬残砖10‑20份，1‑3mm镁铬残砖30‑40份，0‑1mm镁铬残砖20‑30份，200目97高纯镁砂10‑20份，325目精铬矿5‑15份，325目α‑Al2O3微粉1‑5份，硼酸1‑3份，保水剂2‑5份；外层原料按重量份包括3‑6mm电熔镁砂5‑15份，1‑3mm电熔镁砂20‑30份，0‑1mm电熔镁砂10‑20份，200目97高纯镁砂20‑30份，325目精铬矿10‑20份，325目α‑Al2O3微粉1‑5份，硼酸1‑3份，325目硅灰1‑5份，保水剂2‑5份。本发明采用镁铬残砖作为内层主要原料，同时减少内层精铬矿的加入量，降低了耐材的消耗，降低了成本。在生产过程中内层坯料外涂抹流体树脂，在未完全干燥的状态下包覆外层原料，对内层防水保护的同时提高层间结合力，防止砖中出现裂纹。
Magnesium-chromium refractory brick and preparation method thereof
一种镁铬耐火砖及制备方法
LI CHANGJIANG (Autor:in) / ZHAO XIANHUA (Autor:in) / JANG UI-SEON (Autor:in) / JIN ZHAO (Autor:in) / TIAN LIANG (Autor:in) / MA JIALIANG (Autor:in)
12.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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