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Lead-zinc slag-based ecological cementing material for cementing and solidifying heavy metals and preparation method thereof
The invention discloses a lead-zinc slag-based ecological cementing material for cementing and solidifying heavy metals and a preparation method thereof, which belong to the technical field of recycling and harmless treatment of solid hazardous wastes. Calcium-based solid waste (bischofite), magnesium-based solid waste (bischofite), magnesium oxide and a small amount of cement (not more than 10%) which are byproducts of the salt lake industry in a certain proportion are used as excitants to synergistically excite the lead-zinc slag to prepare the high-performance cementing material, and the water-cement ratio, maintenance time and maintenance temperature of the cementing material are adjusted, and the lead-zinc slag-based ecological cementing material with excellent performance can be used for solidifying heavy metal pollutants. Compared with an existing material solidifying technology, the method is simple in process and low in cost, large-scale resource utilization of the lead-zinc smelting waste residues can be achieved, the problem that in the lead-zinc slag stacking process, leaching of heavy metal ions such as zinc, chromium, copper, lead and manganese pollutes soil is solved to a certain extent, and good environmental and economic benefits are achieved.
本发明公开了一种胶结固化重金属的铅锌渣基生态胶凝材料及其制备方法，属于固体危险废弃物资源化、无害化处理技术领域。本发明将一定比例的盐湖工业副产物钙基固废(水氯钙石)、镁基固废(水氯镁石)、氧化镁和少量水泥(不超过10％)作激发剂协同激发铅锌渣制备高性能胶凝材料，通过调节胶凝材料的水灰比、养护时间、养护温度，得到性能优异的铅锌渣基生态胶凝材料，可用于重金属污染物的固化。与现有固化材料技术相比，本发明的方法过程简单、成本低廉，可以实现铅锌冶炼废渣的大规模资源化利用，并在一定程度上解决铅锌渣堆放过程中其中锌、铬、铜、铅、锰等重金属离子的浸出对土壤的污染问题，具有良好的环境和经济效益。
Lead-zinc slag-based ecological cementing material for cementing and solidifying heavy metals and preparation method thereof
The invention discloses a lead-zinc slag-based ecological cementing material for cementing and solidifying heavy metals and a preparation method thereof, which belong to the technical field of recycling and harmless treatment of solid hazardous wastes. Calcium-based solid waste (bischofite), magnesium-based solid waste (bischofite), magnesium oxide and a small amount of cement (not more than 10%) which are byproducts of the salt lake industry in a certain proportion are used as excitants to synergistically excite the lead-zinc slag to prepare the high-performance cementing material, and the water-cement ratio, maintenance time and maintenance temperature of the cementing material are adjusted, and the lead-zinc slag-based ecological cementing material with excellent performance can be used for solidifying heavy metal pollutants. Compared with an existing material solidifying technology, the method is simple in process and low in cost, large-scale resource utilization of the lead-zinc smelting waste residues can be achieved, the problem that in the lead-zinc slag stacking process, leaching of heavy metal ions such as zinc, chromium, copper, lead and manganese pollutes soil is solved to a certain extent, and good environmental and economic benefits are achieved.
本发明公开了一种胶结固化重金属的铅锌渣基生态胶凝材料及其制备方法，属于固体危险废弃物资源化、无害化处理技术领域。本发明将一定比例的盐湖工业副产物钙基固废(水氯钙石)、镁基固废(水氯镁石)、氧化镁和少量水泥(不超过10％)作激发剂协同激发铅锌渣制备高性能胶凝材料，通过调节胶凝材料的水灰比、养护时间、养护温度，得到性能优异的铅锌渣基生态胶凝材料，可用于重金属污染物的固化。与现有固化材料技术相比，本发明的方法过程简单、成本低廉，可以实现铅锌冶炼废渣的大规模资源化利用，并在一定程度上解决铅锌渣堆放过程中其中锌、铬、铜、铅、锰等重金属离子的浸出对土壤的污染问题，具有良好的环境和经济效益。
Lead-zinc slag-based ecological cementing material for cementing and solidifying heavy metals and preparation method thereof
一种胶结固化重金属的铅锌渣基生态胶凝材料及其制备方法
LI HUI (author) / ZHAO ZHONGZHONG (author) / LIU WENHUAN (author)
2021-04-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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