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Low-cost MgO-MgAlON composite refractory material and preparation method thereof
The invention provides a low-cost MgO-MgAlON composite refractory material and a preparation method thereof, and relates to the field of refractory materials, the preparation method comprises the following steps: 1, respectively fully crushing magnesite tailings and bauxite ores, and respectively sieving with a 200-mesh sieve to obtain magnesite tailings fine powder and bauxite ore fine powder; 2, weighing the magnesite tailing fine powder, the bauxite ore fine powder and the aluminum nitride powder according to the mass ratio of (45-70): (20-45): (5-10), and then performing ball milling for 5-10 hours at the rotating speed of 200-300r/min to form uniformly mixed raw materials; step 3, adding a binder with the mass fraction of 2%-5% into the uniformly mixed raw materials, and pressing the raw materials into a green body under 50-200MPa to form a green body raw material; 4, fully drying the green body raw materials in batches in a drying device at the temperature of 100-120 DEG C for 20-30 hours to obtain dried green bodies; 5, the dried green bodies are heated to 1500-1650 DEG C in a high-temperature furnace according to different batches under the buried carbon atmosphere, heat preservation is carried out for 2-6 h, furnace cooling is carried out, and the final product is obtained.By means of the method, the raw material cost for preparing the MgO-MgAlON composite refractory material can be effectively reduced.
本发明提供了一种低成本MgO‑MgAlON复合耐火材料及其制备方法，涉及耐火材料领域，步骤一：将菱镁矿尾矿、铝矾土矿分别充分破碎，并分别过200目筛，获得菱镁矿尾矿细粉和铝矾土矿细粉；步骤二：将菱镁矿尾矿细粉、铝矾土矿细粉和氮化铝粉按质量比45～70:20～45:5～10进行称量，然后于200～300r/min转速下球磨5～10h，形成混合均匀的原料；步骤三：在混合均匀的原料中添加质量分数为2％～5％的粘结剂，并在50～200MPa下压制成生坯，形成生坯原料；步骤四：将生坯原料分批次在干燥装置中于100～120℃充分干燥20～30h，得到干燥后的生坯；步骤五：将干燥后的生坯按不同批次埋碳气氛下在高温炉中升温至1500～1650℃并保温2～6h，随炉冷却得到最终产品，通过本发明，可有效降低制备MgO‑MgAlON复合耐火材料的原料成本。
Low-cost MgO-MgAlON composite refractory material and preparation method thereof
The invention provides a low-cost MgO-MgAlON composite refractory material and a preparation method thereof, and relates to the field of refractory materials, the preparation method comprises the following steps: 1, respectively fully crushing magnesite tailings and bauxite ores, and respectively sieving with a 200-mesh sieve to obtain magnesite tailings fine powder and bauxite ore fine powder; 2, weighing the magnesite tailing fine powder, the bauxite ore fine powder and the aluminum nitride powder according to the mass ratio of (45-70): (20-45): (5-10), and then performing ball milling for 5-10 hours at the rotating speed of 200-300r/min to form uniformly mixed raw materials; step 3, adding a binder with the mass fraction of 2%-5% into the uniformly mixed raw materials, and pressing the raw materials into a green body under 50-200MPa to form a green body raw material; 4, fully drying the green body raw materials in batches in a drying device at the temperature of 100-120 DEG C for 20-30 hours to obtain dried green bodies; 5, the dried green bodies are heated to 1500-1650 DEG C in a high-temperature furnace according to different batches under the buried carbon atmosphere, heat preservation is carried out for 2-6 h, furnace cooling is carried out, and the final product is obtained.By means of the method, the raw material cost for preparing the MgO-MgAlON composite refractory material can be effectively reduced.
本发明提供了一种低成本MgO‑MgAlON复合耐火材料及其制备方法，涉及耐火材料领域，步骤一：将菱镁矿尾矿、铝矾土矿分别充分破碎，并分别过200目筛，获得菱镁矿尾矿细粉和铝矾土矿细粉；步骤二：将菱镁矿尾矿细粉、铝矾土矿细粉和氮化铝粉按质量比45～70:20～45:5～10进行称量，然后于200～300r/min转速下球磨5～10h，形成混合均匀的原料；步骤三：在混合均匀的原料中添加质量分数为2％～5％的粘结剂，并在50～200MPa下压制成生坯，形成生坯原料；步骤四：将生坯原料分批次在干燥装置中于100～120℃充分干燥20～30h，得到干燥后的生坯；步骤五：将干燥后的生坯按不同批次埋碳气氛下在高温炉中升温至1500～1650℃并保温2～6h，随炉冷却得到最终产品，通过本发明，可有效降低制备MgO‑MgAlON复合耐火材料的原料成本。
Low-cost MgO-MgAlON composite refractory material and preparation method thereof
一种低成本MgO-MgAlON复合耐火材料及其制备方法
MA BEIYUE (author) / HONG MENGJIN (author) / WANG LULU (author) / FU GAOFENG (author)
2024-07-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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