Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for grading, regenerating and recovering mullite sand and zircon sand from precision casting waste shell
The invention belongs to the field of resource recycling, and particularly discloses a method for grading, regenerating and recovering mullite sand and zircon sand from a precision casting waste shell. The method comprises the following steps of: crushing a to-be-treated precision casting waste shell, and then carrying out magnetic separation to obtain roughing particles; carrying out dry screening and dust removal treatment on the roughing particles to obtain particles of 12-80 meshes and particles of 80-250 meshes; scrubbing the particles of 12-80 meshes with water, and then performing dehydrating, drying and screening to obtain regenerated coarse mullite sand; subjecting the particles of 80-250 meshes to water scrubbing, then conducting gravity separation and flotation sequentially to realize separation of zircon sand and mullite sand, and finally performing drying to obtain regenerated zircon sand and regenerated fine mullite sand. According to the method, the technological processof recycling mullite sand and zircon sand is effectively simplified, and compared with the prior art, the method has the advantages of simple technological process, little needed equipment, high regeneration separation efficiency, low cost, easy control of operation and the like.
本发明属于资源回收利用领域，并具体公开了从精密铸造废型壳中分级再生回收莫来砂和锆英砂的方法。该方法包括如下步骤：将待处理的精密铸造废型壳破碎后进行磁选，得到粗选颗粒；将粗选颗粒进行干法筛分和除尘处理，得到12～80目颗粒和80～250目颗粒；将12～80目颗粒进行水擦洗，然后经过脱水干燥和筛分后获得再生粗莫来砂；将80～250目颗粒进行水擦洗，然后依次进行重选和浮选，以此实现锆英砂和莫来砂的分离，最后经过干燥后分别获得再生锆英砂和再生细莫来砂。本发明有效简化了再生回用莫来砂和锆英砂的工艺过程，与现有技术相比具有工艺流程简单、所需设备少、再生分离效率高、成本低和操作易于控制等优势。
Method for grading, regenerating and recovering mullite sand and zircon sand from precision casting waste shell
The invention belongs to the field of resource recycling, and particularly discloses a method for grading, regenerating and recovering mullite sand and zircon sand from a precision casting waste shell. The method comprises the following steps of: crushing a to-be-treated precision casting waste shell, and then carrying out magnetic separation to obtain roughing particles; carrying out dry screening and dust removal treatment on the roughing particles to obtain particles of 12-80 meshes and particles of 80-250 meshes; scrubbing the particles of 12-80 meshes with water, and then performing dehydrating, drying and screening to obtain regenerated coarse mullite sand; subjecting the particles of 80-250 meshes to water scrubbing, then conducting gravity separation and flotation sequentially to realize separation of zircon sand and mullite sand, and finally performing drying to obtain regenerated zircon sand and regenerated fine mullite sand. According to the method, the technological processof recycling mullite sand and zircon sand is effectively simplified, and compared with the prior art, the method has the advantages of simple technological process, little needed equipment, high regeneration separation efficiency, low cost, easy control of operation and the like.
本发明属于资源回收利用领域，并具体公开了从精密铸造废型壳中分级再生回收莫来砂和锆英砂的方法。该方法包括如下步骤：将待处理的精密铸造废型壳破碎后进行磁选，得到粗选颗粒；将粗选颗粒进行干法筛分和除尘处理，得到12～80目颗粒和80～250目颗粒；将12～80目颗粒进行水擦洗，然后经过脱水干燥和筛分后获得再生粗莫来砂；将80～250目颗粒进行水擦洗，然后依次进行重选和浮选，以此实现锆英砂和莫来砂的分离，最后经过干燥后分别获得再生锆英砂和再生细莫来砂。本发明有效简化了再生回用莫来砂和锆英砂的工艺过程，与现有技术相比具有工艺流程简单、所需设备少、再生分离效率高、成本低和操作易于控制等优势。
Method for grading, regenerating and recovering mullite sand and zircon sand from precision casting waste shell
从精密铸造废型壳中分级再生回收莫来砂和锆英砂的方法
FAN ZITIAN (Autor:in) / GONG XIAOLONG (Autor:in) / YANG ZHIYUAN (Autor:in) / JIANG WENMING (Autor:in) / LIU XINWANG (Autor:in) / CHEN FENG (Autor:in) / WU JIAN (Autor:in) / JIN ANYANG (Autor:in)
16.10.2020
Patent
Elektronische Ressource
Chinesisch
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