含钒废催化剂的固化处理

Curing treatment of vanadium-containing spent catalyst

以水泥固化废催化剂,从而达到资源化利用为主要目标。将固化体养护7 d后,通过无侧限抗压试验及浸出率试验,确定满足建材要求的最佳配合比,m(废催化剂)∶m(水泥)∶m(砂土)为1∶2.5∶5,熟石灰投加量为1%,水灰比0.6。通过实验研究及国内外相关项目前期经验,确定减水剂为木质素磺酸钠,投加量为水泥用量的0.3%,从而实现固化混凝材料水灰比降低,提高混凝土性能,为后续工厂应用提供技术基础。

The main goal is to solidify waste catalyst to achieve resource utilization.After curing for 7 days,the unconfined compression test and leaching rate test are used to determine the best mix ratio to meet the requirements of building materials.Waste catalyst:Cement:The sand is 1∶2.5∶5,the dosage of slaked lime is 1%,and the watercement ratio is 0.6.Through experimental research and preliminary experience of related projects at home and abroad,it is determined that the water reducing agent is sodium lignosulfonate,and the dosage is 0.3%of the cement dosage,thereby reducing the water-cement ratio of the solidified concrete material and improving the performance of the concrete.The application provides the technical foundation.