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通过介孔纳米γ-Al2O3处理包钢总排水中SO42-、Cl-、Ca2+用于高炉循环冷却水动态试验,确定影响介孔纳米γ-Al2O3吸附效果的因素,即通水时间和流量。结果表明:当pH=5,通水时间为10 min,流量为15 L/h时,SO42-去除率达到88%;当pH=5,通水时间为10 min,流量为60 L/h时,Cl-去除率达到75%;当pH=11,通水时间为10 min,流量为60 L/h时,Ca2+去除率达到84%。
The mesoporous nano-γ-Al2O3 was used to treat SO42-, Cl-, Ca2 + in blast furnace circulating cooling water. The dynamic test of recirculating cooling water in blast furnace was carried out to determine the factors influencing the adsorption effect of mesoporous nano-γ-Al2O3, namely the water passing time and flow rate. The results showed that when pH = 5, water flow time was 10 min and flow rate was 15 L / h, SO42- removal rate reached 88%. When pH = 5, water flow time was 10 min and flow rate was 60 L / h , And the removal rate of Cl- reached 75%. When the pH was 11, the water flow was 10 min and the flow rate was 60 L / h, the removal rate of Ca2 + reached 84%.