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Method for preparing concrete admixture from tailings
The invention discloses a method for preparing a concrete admixture from tailings. The method comprises the following steps: step 1, drying tailings, and controlling the water content of the tailings to be below 5 percent; step 2, preparing an exciting agent into a solution by using deionized water, the exciting agent is prepared from the following agents: sodium metaaluminate, lime and sodium humate; step 3, weighing a certain amount of tailings, adding a certain amount of an exciting agent solution on the basis of the mass of the tailings, uniformly mixing the tailings with the exciting agent saturated solution, and pre-treating the tailings at a certain temperature for a certain time; and step 4, mixing the pretreated tailings obtained in the step 3 with an activating agent, and grinding for a certain time by adopting a grinding machine after mixing to obtain the tailing concrete admixture. The admixture for the concrete is prepared by adding the chemical exciting agent and the activating agent and adopting a chemical pretreatment and mechanical-chemical activation combined process, so that not only is the additional value of the tailings improved, but also the large-scale resource utilization of the tailings is really realized.
本发明公开了一种尾矿制备混凝土掺合料的方法，包括以下步骤：步骤1：将尾矿干燥，尾矿含水量控制在5％以下；步骤2：用去离子水将激发剂配置成溶液；所述的激发剂为以下药剂：偏铝酸钠、石灰和腐殖酸钠；步骤3：称量一定量的尾矿，以尾矿的质量为基准，添加一定量的激发剂溶液，并使尾矿与激发剂饱和溶液混合均匀，在一定温度和一定时间下进行尾矿预处理；步骤4：将步骤3得到的预处理尾矿与活化剂混合，混合后采用磨机粉磨一定时间，获得尾矿混凝土掺合料。通过添加化学激发剂和活化剂，采用化学预处理与机械‑化学活化联合工艺制备了混凝土用掺合料，不仅提高了尾矿的附加值，还真正实现了尾矿的大规模资源化利用。
Method for preparing concrete admixture from tailings
The invention discloses a method for preparing a concrete admixture from tailings. The method comprises the following steps: step 1, drying tailings, and controlling the water content of the tailings to be below 5 percent; step 2, preparing an exciting agent into a solution by using deionized water, the exciting agent is prepared from the following agents: sodium metaaluminate, lime and sodium humate; step 3, weighing a certain amount of tailings, adding a certain amount of an exciting agent solution on the basis of the mass of the tailings, uniformly mixing the tailings with the exciting agent saturated solution, and pre-treating the tailings at a certain temperature for a certain time; and step 4, mixing the pretreated tailings obtained in the step 3 with an activating agent, and grinding for a certain time by adopting a grinding machine after mixing to obtain the tailing concrete admixture. The admixture for the concrete is prepared by adding the chemical exciting agent and the activating agent and adopting a chemical pretreatment and mechanical-chemical activation combined process, so that not only is the additional value of the tailings improved, but also the large-scale resource utilization of the tailings is really realized.
本发明公开了一种尾矿制备混凝土掺合料的方法，包括以下步骤：步骤1：将尾矿干燥，尾矿含水量控制在5％以下；步骤2：用去离子水将激发剂配置成溶液；所述的激发剂为以下药剂：偏铝酸钠、石灰和腐殖酸钠；步骤3：称量一定量的尾矿，以尾矿的质量为基准，添加一定量的激发剂溶液，并使尾矿与激发剂饱和溶液混合均匀，在一定温度和一定时间下进行尾矿预处理；步骤4：将步骤3得到的预处理尾矿与活化剂混合，混合后采用磨机粉磨一定时间，获得尾矿混凝土掺合料。通过添加化学激发剂和活化剂，采用化学预处理与机械‑化学活化联合工艺制备了混凝土用掺合料，不仅提高了尾矿的附加值，还真正实现了尾矿的大规模资源化利用。
Method for preparing concrete admixture from tailings
一种尾矿制备混凝土掺合料的方法
KUANG JINGZHONG (author) / YU MINGMING (author) / QIU TINGXING (author)
2021-06-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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