CN109627021A - 堇青石坩埚的制备方法 - Google Patents
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Abstract
本发明涉及一种堇青石坩埚的制备方法,属于硅酸盐坩埚制备领域。所述的堇青石坩埚包括下列质量分数的物质:滑石粉5‑40%;氧化铝粉10‑40%;堇青石粉5‑20%;高岭土粉10‑40%。本发明提供的制备方法,包括5个步骤,科学合理,简单易行,制得的坩埚具有使用寿命长,不掉渣,减少了对客户产品的污染,保障产品质量稳定的特点。
Description
技术领域
本发明涉及一种堇青石坩埚的制备方法,属于硅酸盐坩埚制备领域。
背景技术
当前市场上的堇青石坩埚产品都存在着使用寿命短、杂质成分高、成本高、外观粗糙和污染客户产品的问题,且客户的使用成本高,产品质量波动较大;因此,亟需一款使用寿命长、外观洁净细腻的堇青石坩埚。
发明内容
针对现有技术的不足,本发明的目的是提供一种堇青石坩埚的制备方法,科学合理,简单易行,制得的坩埚具有使用寿命长,杂质少,外观洁净细腻,减少对客户产品的污染,保障产品质量稳定的特点。
本发明所述的堇青石坩埚,包括下列质量分数的物质:
所述的滑石粉、氧化铝粉、堇青石粉和高岭土粉的粒径都为0.5μm-0.5mm。
本发明所述的堇青石坩埚的制备方法,利用陶瓷的生产工艺来生产坩埚,包括以下步骤:
1)将滑石粉、氧化铝粉、堇青石粉和高岭土粉按质量比例放入球磨机中混合湿磨,形成泥浆;
2)在球磨机中湿法研磨后,再进行湿法除铁,将研磨好的泥浆,经过几条至几十条高强磁棒组成的通道;
3)利用滤泥机对除铁后的泥浆进行压滤,形成泥饼,待用;
4)将步骤3中制得的泥饼和骨料按照质量比加入至真空练泥机中进行多次真空练泥;
5)将经过真空练泥后的泥料切割成坯体待用;
6)利用辊压成型机对坯体进行辊压成型,形成半成品,所用模型为石膏模型;
7)半成品自然风干,待半成品有足够强度后,从模型中取出半成品进入干燥窑中进行干燥;
8)采用烧成窑,将干燥后的半成品经过1200-1400℃高温烧成后得到成品坩埚。
所述的步骤1中,混合湿磨时间为1-6小时。
所述的步骤4中,真空练泥时间为1-5;加入骨料质量为泥饼质量的10-50%。
所述的步骤4中,骨料为白刚玉颗粒、莫来石颗粒、堇青石颗粒或熔融石英颗粒中的一种或几种。
所述的白刚玉颗粒、莫来石颗粒、堇青石颗粒和熔融石英颗粒粒径都为100-18目。
所述的步骤7中,干燥窑中干燥温度为40-110℃。
所述的步骤8中,烧成窑为燃气推板窑、梭式窑或电推板窑中的一种。
坩埚中晶相为堇青石相和莫来石相,以堇青石相为主,莫来石相为次,两者比例为9-7:1-3。
与现有技术相比,本发明具有如下有益效果:
1.使用寿命长,使用时间由原来的不到一个月延长至2-4个月;
2.制得的坩埚不掉渣,外观洁净细腻,减少对客户产品的污染,保障客户产品质量稳定,提高了产品的性价比;
3.与市售产品相比,本产品组成及生产工艺更加细化,使产品寿命得到显著提高,产品的纯度及外观更加优异,最大限度的减少了对客户产品的污染,利用粉体的烧成,质地更加均匀,广泛应运于电容器、电子元件、发光粉体等领域;
4.本发明所提供的制备方法科学合理,简单易行,提高了生产效率,且便于工业化生产。
具体实施方式
下面结合实施例对本发明做进一步的说明。
实施例1
滑石粉40%;氧化铝粉20%;高岭土粉40%。
所述的滑石粉、莫来石粉和高岭土粉的粒度都为1-44μm。
实施例2
滑石粉25%;氧化铝粉15%;堇青石粉20%;高岭土粉40%。
所述的滑石粉、莫来石粉、堇青石粉和高岭土粉的粒度都为5-20μm。
实施例3
滑石粉20%;氧化铝粉25%;堇青石粉15%;高岭土粉25%;轻烧镁粉15%。
所述的滑石粉、莫来石粉、堇青石粉、高岭土粉和轻烧镁粉的粒度都为10-60μm。
实施例4
滑石粉10%;氧化铝粉25%;堇青石粉15%;轻烧镁粉15%;高岭土粉35%。
所述的滑石粉、莫来石粉、堇青石粉、高岭土粉和轻烧镁粉的粒度都为3-90μm。
上述实施例1~4之一任意所述的堇青石坩埚的制备方法,包括以下步骤:
1)将各原料物质按质量比例放入球磨机中混合湿磨,形成泥浆;
2)在球磨机中湿法研磨后,再进行湿法除铁,将研磨好的泥浆,经过几条至几十条高强磁棒组成的通道;
3)利用滤泥机对除铁后的泥浆进行压滤,形成泥饼,待用;
4)将步骤3中制得的泥饼和骨料按照质量比加入至真空练泥机中进行多次真空练泥;
5)将经过真空练泥后的泥料切割成坯体待用;
6)利用辊压成型机对坯体进行辊压成型,形成半成品;
7)半成品自然风干,待半成品有足够强度后,从模型中取出半成品进入干燥窑中进行干燥;
8)采用烧成窑,将干燥后的半成品经过1200-1400℃高温烧成后得到成品坩埚。
所述的步骤1中,混合湿磨时间为1-6小时。
所述的步骤4中,真空练泥时间为1-5h;加入骨料质量为泥饼质量的10-50%。
所述的步骤4中,骨料为白刚玉颗粒、莫来石颗粒、堇青石颗粒或熔融石英颗粒中的一种或几种。
所述的白刚玉颗粒、莫来石颗粒、堇青石颗粒和熔融石英颗粒粒径都为100-18目。
所述的步骤7中,干燥窑中干燥温度为40-110℃。
实施例1-2中,混合湿磨时间为2小时,真空练泥时间为3h,真空练泥次数为4次;加入骨料质量为泥饼质量的20%;骨料为白刚玉颗粒和莫来石颗粒的混合物;粒径都为18目,干燥窑中干燥温度为40℃;烧成窑为燃气推板窑。
实施例3-4中,混合湿磨时间为3小时,真空练泥时间为2h,真空练泥次数为3次;加入骨料质量为泥饼质量的30%;骨料为莫来石颗粒、堇青石颗粒和熔融石英颗粒的混合物,粒径都为50目,干燥窑中干燥温度为90℃;烧成窑为梭式窑。
对实施例1-4制得的坩埚产品进行纯度、使用寿命的性能测试,测试的黑点和黄点为直径<1mm的斑点;测试结果如表1所示。
纯度通过肉眼观察产品表面的黄点或黑点个数来表示。
表1实施例1-4产品的纯度及使用寿命测试结果
Claims (6)
1.一种堇青石坩埚的制备方法,其特征在于:包括以下步骤:
1)将滑石粉、氧化铝粉、堇青石粉和高岭土粉按质量比例放入球磨机中混合湿磨,形成泥浆;
2)利用滤泥机对泥浆进行压滤,形成泥饼,待用;
3)将步骤2中制得的泥饼和骨料按照质量比加入至真空练泥机中进行真空练泥;
4)利用辊压成型机对步骤3中真空练泥后的物料进行辊压成型,形成半成品,所用模型为石膏模型;
5)采用烧成窑,将半成品经过1200-1400℃高温烧成后得到成品坩埚。
2.根据权利要求1所述的堇青石坩埚的制备方法,其特征在于:步骤1中,混合湿磨时间为1-6小时。
3.根据权利要求2所述的堇青石坩埚的制备方法,其特征在于:步骤3中,真空练泥时间为1-5h;加入骨料质量为泥饼质量的10-50%。
4.根据权利要求1所述的堇青石坩埚的制备方法,其特征在于:步骤3中,骨料为白刚玉颗粒、莫来石颗粒、堇青石颗粒或熔融石英颗粒中的一种或几种。
5.根据权利要求4所述的堇青石坩埚的制备方法,其特征在于:白刚玉颗粒、莫来石颗粒、堇青石颗粒和熔融石英颗粒粒径都为100-18目。
6.根据权利要求1所述的堇青石坩埚的制备方法,其特征在于:步骤5中,烧成窑为燃气推板窑、梭式窑或电推板窑中的一种。
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CN112811886A (zh) * | 2021-01-16 | 2021-05-18 | 陕西科技大学 | 一种电池匣钵及其制备方法 |
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