CN107129314A - 一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法 - Google Patents

一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法 Download PDF

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CN107129314A
CN107129314A CN201710481008.8A CN201710481008A CN107129314A CN 107129314 A CN107129314 A CN 107129314A CN 201710481008 A CN201710481008 A CN 201710481008A CN 107129314 A CN107129314 A CN 107129314A
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ball milling
refractory powder
milling material
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谷和文
丁思潮
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ANHUI YINLI FOUNDRY Co Ltd
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Abstract

本发明公开了一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法。包括以下步骤：（1）将纤蛇纹石尾矿和花岗岩废料混合均匀，破碎，煅烧，冷却至室温后球磨，得球磨料A；（2）将硅微粉和工业氧化铝混合均匀，球磨，得球磨料B；（3）将球磨料A和球磨料B混合均匀，然后加水、苏州土六偏磷酸钠，球磨，过滤，烘干，得球磨料C；（4）将球磨料C采用半干法压制成型，制成圆片；（5）将圆片进行高温烧结，自然冷却到室温，破碎，粉碎，过筛即可。本发明制得的耐火粉料不仅具有较高的耐火度和强度以及较低的热膨胀系数和导热系数，还具有优良的抗热震性和抗化学腐蚀性，可以广泛应用于铸造涂料。

Description

一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料 的方法
技术领域
本发明涉及一种耐火材料的制备方法，具体涉及一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法。
背景技术
近年来，我国经济快速发展，随之而生的工业废渣和建筑垃圾也与日俱增。蛇纹石在我国储量丰富，分布广泛，是一种很有价值的含镁矿物资源，我国蛇纹石矿石含棉率低，选棉工艺相对较为落后，使得尾矿产生率高，而对纤蛇纹石石棉尾矿的利用率较低。大量的纤蛇纹石石棉尾矿堆积不仅造成严重的环境污染问题，并且石棉尾矿中未分离的短纤维随风移动，容易引起呼吸道疾病，纤维随水体流动进入河流，通过饮水进入动物或人体肺部，危害人体健康。花岗石是一种分布广泛、资源丰富的岩石，广泛应用于建筑物的内外装修和基础砌筑。随着人们对花岗石需求量的不断增加，大量的废石块、废石粉、废泥浆也随之而来，这不仅对环境造成了严重的污染，而且也是一种资源浪费。如何减少蛇纹石尾矿和花岗岩废料的资源浪费，提高减少蛇纹石尾矿和花岗岩废料的回收利用率成为人们关注的焦点。因此，本发明研究了一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法，为蛇纹石尾矿和花岗岩废料的资源化利用提供了一条新的途径。
发明内容
本发明的目的在于提供一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法。本发明制得的耐火粉料不仅具有较高的耐火度和强度以及较低的热膨胀系数和导热系数，还具有优良的抗热震性和抗化学腐蚀性，可以广泛应用于铸造涂料。
为实现上述目的，本发明采用如下的技术方案：
一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法，包括以下步骤：
（1）按照质量比1.5-2.5:1将纤蛇纹石尾矿和花岗岩废料混合均匀，破碎至粒度≤0.5㎜的颗粒，然后在560-640℃温度下煅烧2-3h，冷却至室温后球磨至颗粒粒度为20-30μm，得球磨料A；
（2）按照质量比1-2:1将硅微粉和工业氧化铝混合均匀，球磨至颗粒粒度为10-20μm，得球磨料B；
（3）按照质量比1:2-3将球磨料A和球磨料B混合均匀，然后按照固液比1:3-4将混合球磨料加入到水中，再加入相当于混合球磨料质量35-40%的苏州土和5-10%的六偏磷酸钠，球磨30-50min，过滤，烘干至含水率为4-6%，得球磨料C；
（4）将球磨料C采用半干法压制成型，制成直径为10mm，厚度为1 mm的圆片；
（5）将圆片以4-6℃/min的升温速度加热至1380-1420℃，保温2-4h后自然冷却到室温，破碎，粉碎，过200-300目筛，即得所需的耐火粉料。
所述步骤（1）中球磨转速为5000-7000r/min，球料比为4-6:1。
所述步骤（2）中球磨转速为6000-8000r/min，球料比为3-5:1。
所述步骤（3）中球磨转速为8000-10000r/min，球料比为5-7:1。
所述步骤（4）中压制成型压力为80-120MPa，保压时间为20-40s。
本发明的有益效果：
本发明采用蛇纹石尾矿、花岗岩废料与硅微粉、工业氧化铝、苏州土配合作为原料，通过高温烧结制得具有莫来石/堇青石/钙长石复相的耐火粉料，该耐火粉料不仅具有较高的耐火度和强度以及较低的热膨胀系数和导热系数，还具有优良的抗热震性和抗化学腐蚀性，可以广泛应用于铸造涂料，同时为蛇纹石尾矿和花岗岩废料的资源化利用提供了一条新的途径。
具体实施方式
实施例1
一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法，包括以下步骤：
（1）按照质量比1.5:1将纤蛇纹石尾矿和花岗岩废料混合均匀，破碎至粒度≤0.5㎜的颗粒，然后在560℃温度下煅烧3h，冷却至室温后在5000r/min的转速下球磨至颗粒粒度为30μm，球料比为4:1，得球磨料A；
（2）按照质量比1:1将硅微粉和工业氧化铝混合均匀，在6000r/min的转速下球磨至颗粒粒度为20μm，球料比为3:1，得球磨料B；
（3）按照质量比1:2将球磨料A和球磨料B混合均匀，然后按照固液比1:3将混合球磨料加入到水中，再加入相当于混合球磨料质量35%的苏州土和5%的六偏磷酸钠，在8000r/min的转速下球磨50min，球料比为5:1，过滤，烘干至含水率为4%，得球磨料C；
（4）将球磨料C采用半干法压制成型，制成直径为10mm，厚度为1 mm的圆片，成型压力为80MPa，保压时间为40s；
（5）将圆片以4℃/min的升温速度加热至1380℃，保温4h后自然冷却到室温，破碎，粉碎，过200目筛，即得所需的耐火粉料。
实施例2
一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法，包括以下步骤：
（1）按照质量比2:1将纤蛇纹石尾矿和花岗岩废料混合均匀，破碎至粒度≤0.5㎜的颗粒，然后在600℃温度下煅烧2.5h，冷却至室温后在6000r/min的转速下球磨至颗粒粒度为25μm，球料比为5:1，得球磨料A；
（2）按照质量比1.5:1将硅微粉和工业氧化铝混合均匀，在7000r/min的转速下球磨至颗粒粒度为15μm，球料比为4:1，得球磨料B；
（3）按照质量比1:2.5将球磨料A和球磨料B混合均匀，然后按照固液比1:3.5将混合球磨料加入到水中，再加入相当于混合球磨料质量38%的苏州土和7%的六偏磷酸钠，在900r/min的转速下球磨40min，球料比为6:1，过滤，烘干至含水率为5%，得球磨料C；
（4）将球磨料C采用半干法压制成型，制成直径为10mm，厚度为1 mm的圆片，成型压力为100MPa，保压时间为30s；
（5）将圆片以5℃/min的升温速度加热至1400℃，保温3h后自然冷却到室温，破碎，粉碎，过250目筛，即得所需的耐火粉料。
实施例3
一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法，包括以下步骤：
（1）按照质量比2.5:1将纤蛇纹石尾矿和花岗岩废料混合均匀，破碎至粒度≤0.5㎜的颗粒，然后在640℃温度下煅烧2h，冷却至室温后在7000r/min的转速下球磨至颗粒粒度为20μm，球料比为6:1，得球磨料A；
（2）按照质量比2:1将硅微粉和工业氧化铝混合均匀，在8000r/min的转速下球磨至颗粒粒度为10μm，球料比为5:1，得球磨料B；
（3）按照质量比1:3将球磨料A和球磨料B混合均匀，然后按照固液比1:4将混合球磨料加入到水中，再加入相当于混合球磨料质量40%的苏州土和10%的六偏磷酸钠，在10000r/min的转速下球磨30min，球料比为7:1，过滤，烘干至含水率为6%，得球磨料C；
（4）将球磨料C采用半干法压制成型，制成直径为10mm，厚度为1 mm的圆片，成型压力为120MPa，保压时间为20s；
（5）将圆片以6℃/min的升温速度加热至1420℃，保温2h后自然冷却到室温，破碎，粉碎，过300目筛，即得所需的耐火粉料。

Claims (5)

1.一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法，其特征在于，包括以下步骤：
（1）按照质量比1.5-2.5:1将纤蛇纹石尾矿和花岗岩废料混合均匀，破碎至粒度≤0.5㎜的颗粒，然后在560-640℃温度下煅烧2-3h，冷却至室温后球磨至颗粒粒度为20-30μm，得球磨料A；
（2）按照质量比1-2:1将硅微粉和工业氧化铝混合均匀，球磨至颗粒粒度为10-20μm，得球磨料B；
（3）按照质量比1:2-3将球磨料A和球磨料B混合均匀，然后按照固液比1:3-4将混合球磨料加入到水中，再加入相当于混合球磨料质量35-40%的苏州土和5-10%的六偏磷酸钠，球磨30-50min，过滤，烘干至含水率为4-6%，得球磨料C；
（4）将球磨料C采用半干法压制成型，制成直径为10mm，厚度为1 mm的圆片；
（5）将圆片以4-6℃/min的升温速度加热至1380-1420℃，保温2-4h后自然冷却到室温，破碎，粉碎，过200-300目筛，即得所需的耐火粉料。
2.根据权利要求1所述的一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法，其特征在于，所述步骤（1）中球磨转速为5000-7000r/min，球料比为4-6:1。
3.根据权利要求1所述的一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法，其特征在于，所述步骤（2）中球磨转速为6000-8000r/min，球料比为3-5:1。
4.根据权利要求1所述的一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法，其特征在于，所述步骤（3）中球磨转速为8000-10000r/min，球料比为5-7:1。
5.根据权利要求1所述的一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法，其特征在于，所述步骤（4）中压制成型压力为80-120MPa，保压时间为20-40s。
CN201710481008.8A 2017-06-22 2017-06-22 一种利用蛇纹石尾矿和花岗岩废料制备铸造涂料用耐火粉料的方法 Pending CN107129314A (zh)

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