Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cooperative treatment method for waste incineration fly ash and lithium ore tailings
The invention discloses a waste incineration fly ash and lithium ore tailings cooperative treatment method which comprises the following steps: mixing waste incineration fly ash and lithium ore tailings to obtain a mixture; mixing the mixture with an alkali activator, and carrying out alkali excitation; carrying out a hydrothermal reaction on the alkali-activated mixed solution, carrying out solid-liquid separation to obtain a pretreatment solution and pretreatment slag, and washing the pretreatment slag with water to obtain a pretreatment product; shale or coal gangue, sludge and the pretreated product are mixed, water is added, sintering is conducted, and cooperative treatment of the waste incineration fly ash and the lithium ore tailings is completed. The lithium ore tailings adopted by the method are a porous material, have a larger specific surface area and a more reasonable silicon-aluminum-calcium ratio, are beneficial to acceleration of alkali excitation activation and improvement of the hydrothermal reaction efficiency, are simple in process steps, short in treatment time, efficient, convenient and energy-saving, and can be used for preparing the lithium ore tailings through a comprehensive treatment mode of'alkali excitation + hydrothermal pretreatment + sintering curing '. Finally, the dual purposes of treating waste with waste and efficiently solidifying heavy metal are achieved.
本发明公开了一种垃圾焚烧飞灰和锂矿尾砂协同处理方法，步骤包括：将垃圾焚烧飞灰和锂矿尾砂混合，得混合料；将混合料与碱性激发剂混合，进行碱激发；将碱激发后的混合液进行水热反应，固液分离，得预处理液和预处理渣，预处理渣经水洗后得到预处理产物；将页岩或煤矸石、污泥与预处理产物混合，加水，烧结，完成对垃圾焚烧飞灰和锂矿尾砂的协同处理。本发明方法采用的锂矿尾砂是一种多孔材料，具有更大的比表面积和更加合理的硅铝钙占比，有利于加快碱激发活化，提高水热反应的效率，工艺步骤简单，处理时间短，高效、便捷、节能，通过“碱性激发+水热预处理+烧结固化”的综合处理方式，最终实现以废治废、高效固化重金属的双重目标。
Cooperative treatment method for waste incineration fly ash and lithium ore tailings
The invention discloses a waste incineration fly ash and lithium ore tailings cooperative treatment method which comprises the following steps: mixing waste incineration fly ash and lithium ore tailings to obtain a mixture; mixing the mixture with an alkali activator, and carrying out alkali excitation; carrying out a hydrothermal reaction on the alkali-activated mixed solution, carrying out solid-liquid separation to obtain a pretreatment solution and pretreatment slag, and washing the pretreatment slag with water to obtain a pretreatment product; shale or coal gangue, sludge and the pretreated product are mixed, water is added, sintering is conducted, and cooperative treatment of the waste incineration fly ash and the lithium ore tailings is completed. The lithium ore tailings adopted by the method are a porous material, have a larger specific surface area and a more reasonable silicon-aluminum-calcium ratio, are beneficial to acceleration of alkali excitation activation and improvement of the hydrothermal reaction efficiency, are simple in process steps, short in treatment time, efficient, convenient and energy-saving, and can be used for preparing the lithium ore tailings through a comprehensive treatment mode of'alkali excitation + hydrothermal pretreatment + sintering curing '. Finally, the dual purposes of treating waste with waste and efficiently solidifying heavy metal are achieved.
本发明公开了一种垃圾焚烧飞灰和锂矿尾砂协同处理方法，步骤包括：将垃圾焚烧飞灰和锂矿尾砂混合，得混合料；将混合料与碱性激发剂混合，进行碱激发；将碱激发后的混合液进行水热反应，固液分离，得预处理液和预处理渣，预处理渣经水洗后得到预处理产物；将页岩或煤矸石、污泥与预处理产物混合，加水，烧结，完成对垃圾焚烧飞灰和锂矿尾砂的协同处理。本发明方法采用的锂矿尾砂是一种多孔材料，具有更大的比表面积和更加合理的硅铝钙占比，有利于加快碱激发活化，提高水热反应的效率，工艺步骤简单，处理时间短，高效、便捷、节能，通过“碱性激发+水热预处理+烧结固化”的综合处理方式，最终实现以废治废、高效固化重金属的双重目标。
Cooperative treatment method for waste incineration fly ash and lithium ore tailings
一种垃圾焚烧飞灰和锂矿尾砂协同处理方法
PENG CHUAN (Autor:in) / XIAO JINKANG (Autor:in) / ZHANG JUNFENG (Autor:in) / ZHAO JING (Autor:in) / SONG SHIYU (Autor:in)
23.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Utilization method of waste incineration fly ash and iron tailings
| Europäisches Patentamt | 2024
Utilization method of dechlorinated waste incineration fly ash and iron tailings
| Europäisches Patentamt | 2024
Method for comprehensively utilizing waste incineration fly ash and flotation tailings
| Europäisches Patentamt | 2020
Cooperative treatment method and system for waste incineration fly ash and silicon-rich waste
| Europäisches Patentamt | 2023
Waste incineration coupled waste incineration fly ash resourceful treatment system and method
| Europäisches Patentamt | 2021