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Preparation method of high-reaction-activity binder zircon powder special for precision casting
The invention discloses a preparation method of high-reaction-activity binder type zircon powder special for precision casting, and belongs to the technical field of zircon powder preparation. Comprising the following steps: S1, proportioning raw materials: taking 55-85 parts by weight of zircon sand, 5-8 parts by weight of fused alumina zirconia powder, 1-3 parts by weight of a solid dispersant, 1-3 parts by weight of yttrium oxide, 2-5 parts by weight of alpha-Al2O3, 2-4 parts by weight of barium zirconium oxide, 4-6 parts by weight of yttrium-stabilized zirconium oxide and 7-8 parts by weight of an inorganic binder for later use; s2, zircon powder pretreatment, wherein zircon sand is subjected to acid pickling to remove impurities, and then high-temperature and high-pressure treatment is conducted; s3, compounding powder: taking out half of the pretreated zircon powder obtained in the step S2, and continuously putting into a ball mill for ball milling; s4, calcining the composite powder, namely calcining the composite powder obtained in the step S3 in a calcining furnace; and S5, preparing a finished product: mixing the calcined powder with the remaining materials in the step S1 to prepare the finished product zircon powder, so that the precision of a precision casting is improved, the fire resistance is high, the reaction activity is relatively high, the mold forming time can be effectively shortened, and the shrinkage rate in the roasting process is low.
本发明公开了一种高反应活性的精铸专用结配型锆英粉的制备方法，属于锆英粉制备技术领域，包括S1、原料配比：按以下重量份取锆英砂55‑85份、锆刚玉粉体5‑8粉、1‑3份固态分散剂、1‑3份氧化钇、2‑5份α‑Al2O3、2‑4份氧化钡锆、4‑6份钇稳定氧化锆、7‑8份无机粘结剂备用；S2、锆英粉的预处理：对锆英砂进行酸洗去除杂质，然后高温高压处理；S3、复合粉体：将步骤S2中得到的预处理锆英粉取出一半继续放入球磨机中进行球磨；S4、复合粉体煅烧：将步骤S3中得到的复合粉体放入煅烧炉中进行煅烧；S5、制备成品：将煅烧粉体与步骤S1中的余料混合制备成品锆英粉，有利于提高精铸件的精度，且耐火性能强，具有较高的反应活性，能有效缩短模具成型时间，焙烧过程中收缩率低。
Preparation method of high-reaction-activity binder zircon powder special for precision casting
The invention discloses a preparation method of high-reaction-activity binder type zircon powder special for precision casting, and belongs to the technical field of zircon powder preparation. Comprising the following steps: S1, proportioning raw materials: taking 55-85 parts by weight of zircon sand, 5-8 parts by weight of fused alumina zirconia powder, 1-3 parts by weight of a solid dispersant, 1-3 parts by weight of yttrium oxide, 2-5 parts by weight of alpha-Al2O3, 2-4 parts by weight of barium zirconium oxide, 4-6 parts by weight of yttrium-stabilized zirconium oxide and 7-8 parts by weight of an inorganic binder for later use; s2, zircon powder pretreatment, wherein zircon sand is subjected to acid pickling to remove impurities, and then high-temperature and high-pressure treatment is conducted; s3, compounding powder: taking out half of the pretreated zircon powder obtained in the step S2, and continuously putting into a ball mill for ball milling; s4, calcining the composite powder, namely calcining the composite powder obtained in the step S3 in a calcining furnace; and S5, preparing a finished product: mixing the calcined powder with the remaining materials in the step S1 to prepare the finished product zircon powder, so that the precision of a precision casting is improved, the fire resistance is high, the reaction activity is relatively high, the mold forming time can be effectively shortened, and the shrinkage rate in the roasting process is low.
本发明公开了一种高反应活性的精铸专用结配型锆英粉的制备方法，属于锆英粉制备技术领域，包括S1、原料配比：按以下重量份取锆英砂55‑85份、锆刚玉粉体5‑8粉、1‑3份固态分散剂、1‑3份氧化钇、2‑5份α‑Al2O3、2‑4份氧化钡锆、4‑6份钇稳定氧化锆、7‑8份无机粘结剂备用；S2、锆英粉的预处理：对锆英砂进行酸洗去除杂质，然后高温高压处理；S3、复合粉体：将步骤S2中得到的预处理锆英粉取出一半继续放入球磨机中进行球磨；S4、复合粉体煅烧：将步骤S3中得到的复合粉体放入煅烧炉中进行煅烧；S5、制备成品：将煅烧粉体与步骤S1中的余料混合制备成品锆英粉，有利于提高精铸件的精度，且耐火性能强，具有较高的反应活性，能有效缩短模具成型时间，焙烧过程中收缩率低。
Preparation method of high-reaction-activity binder zircon powder special for precision casting
一种高反应活性的精铸专用结配型锆英粉的制备方法
TANG QING (author) / TANG HAIBING (author) / JIANG CHENG (author)
2022-10-04
Patent
Electronic Resource
Chinese
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