Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thermal-shock-resistant magnesian sliding plate brick and production method thereof
The invention discloses a thermal-shock-resistant magnesian sliding plate brick which is prepared from the following raw materials in percentage by weight: 55-70% of modified magnesia particles, 30-45% of magnesia fine powder and 3-5% of paper pulp waste liquid. The preparation method comprises the following steps: firstly, preparing alpha-Al2O3 micro-powder coated modified magnesia particles by taking a saturated solution of aluminum chloride or aluminum sulfate as a binding agent, weighing the components according to the weight, mixing for 0.5 hour, forming by selecting a press machine according to the single weight of a sliding plate, drying a green body for 24 hours at the temperature of 110 DEG C, loading into a kiln, firing at 1500 DEG C for 8 hours, hooping the fired green body, adhering a steel shell, grinding, coating, finishing, checking and accepting, and storing in a warehouse. According to the thermal-shock-resistant magnesium sliding plate produced by the invention, low-expansion spinel is generated around magnesia particles to absorb thermal expansion of the magnesia particles, so that the internal thermal stress of the material is reduced and the thermal shock resistance is improved, through modification, the surface activity of magnesia particles is improved, sintering is promoted, combination of the particles and a matrix is strengthened, and the high-temperature strength is improved, so that the service life of the magnesian skateboard is prolonged and the sintering temperature is reduced.
本发明公开了一种抗热震镁质滑板砖，按重量百分比计，原料组成为：改性镁砂颗粒55%～70%，镁砂细粉30%～45%，纸浆废液3%～5%。制备方法如下：首先采用氯化铝或硫酸铝的饱和溶液做结合剂制得α‑Al2O3微粉包覆改性镁砂颗粒，按重量称取各组分，混练0.5小时后，根据滑板单重选择压力机成型，坯体在110℃温度条件下干燥24h，然后装窑1500℃×8烧成，烧后坯体经套箍、粘钢壳、磨制、涂布、精整、验收后入库贮存。本发明生产的抗热震镁质滑板，在镁砂颗粒周围生成低膨胀的尖晶石吸收镁砂颗粒的热膨胀，降低材料内部热应力，改善抗热震性；通过改性增加镁砂颗粒表面活性，促进烧结，强化颗粒与基质的结合，增加高温强度，从而提高镁质滑板使用寿命，降低烧成温度。
Thermal-shock-resistant magnesian sliding plate brick and production method thereof
The invention discloses a thermal-shock-resistant magnesian sliding plate brick which is prepared from the following raw materials in percentage by weight: 55-70% of modified magnesia particles, 30-45% of magnesia fine powder and 3-5% of paper pulp waste liquid. The preparation method comprises the following steps: firstly, preparing alpha-Al2O3 micro-powder coated modified magnesia particles by taking a saturated solution of aluminum chloride or aluminum sulfate as a binding agent, weighing the components according to the weight, mixing for 0.5 hour, forming by selecting a press machine according to the single weight of a sliding plate, drying a green body for 24 hours at the temperature of 110 DEG C, loading into a kiln, firing at 1500 DEG C for 8 hours, hooping the fired green body, adhering a steel shell, grinding, coating, finishing, checking and accepting, and storing in a warehouse. According to the thermal-shock-resistant magnesium sliding plate produced by the invention, low-expansion spinel is generated around magnesia particles to absorb thermal expansion of the magnesia particles, so that the internal thermal stress of the material is reduced and the thermal shock resistance is improved, through modification, the surface activity of magnesia particles is improved, sintering is promoted, combination of the particles and a matrix is strengthened, and the high-temperature strength is improved, so that the service life of the magnesian skateboard is prolonged and the sintering temperature is reduced.
本发明公开了一种抗热震镁质滑板砖，按重量百分比计，原料组成为：改性镁砂颗粒55%～70%，镁砂细粉30%～45%，纸浆废液3%～5%。制备方法如下：首先采用氯化铝或硫酸铝的饱和溶液做结合剂制得α‑Al2O3微粉包覆改性镁砂颗粒，按重量称取各组分，混练0.5小时后，根据滑板单重选择压力机成型，坯体在110℃温度条件下干燥24h，然后装窑1500℃×8烧成，烧后坯体经套箍、粘钢壳、磨制、涂布、精整、验收后入库贮存。本发明生产的抗热震镁质滑板，在镁砂颗粒周围生成低膨胀的尖晶石吸收镁砂颗粒的热膨胀，降低材料内部热应力，改善抗热震性；通过改性增加镁砂颗粒表面活性，促进烧结，强化颗粒与基质的结合，增加高温强度，从而提高镁质滑板使用寿命，降低烧成温度。
Thermal-shock-resistant magnesian sliding plate brick and production method thereof
一种抗热震镁质滑板砖及其生产方法
HAN XIAOYUAN (Autor:in) / SHI KAI (Autor:in) / MA SHIXING (Autor:in) / XIA YI (Autor:in) / ZHANG YI (Autor:in) / LI ZHENGXIN (Autor:in)
20.11.2020
Patent
Elektronische Ressource
Chinesisch
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