电滤灰吸附磺酸盐表面活性物质的研究

在比较了阴离子交换树脂、活性炭与电滤灰对亚甲基 -二 - β-萘 - [4]磺酸钠和 C12～ 14 烷基磺酸钠吸附效果的基础上 ,着重研究了电滤灰对磺酸盐的吸附行为 ,并对其吸附机理作了探讨。

电滤灰吸附磺酸盐表面活性物质的研究

在比较了阴离子交换树脂、活性炭与电滤灰对亚甲基—二—β—萘—〔４〕磺酸钠和Ｃ１２－１４烷基磺酸钠吸附效果的基础上，着重研究了电滤灰对磺酸盐的吸附行为；并对其吸附机理作了探讨。

磺酸盐类表面活性剂吸附分离的研究

研究了阴离子交换树脂、活性炭及电滤灰对亚甲基－二－β－萘－［４］－磺酸钠和十二烷基磺酸钠的吸附作用，证明了电滤灰是最为有效的固体吸附剂。

Extraction of Zinc from Electric Arc Furnace Dust by Alkaline Leaching Followed by Fusion of the Leaching Residue with Caustic Soda

Extractability of zinc from two types of electric arc furnace (EAF) dusts containing 24.8% and 16.8% of zinc respectively (denoted as Sample A and Sample B) were tested using direct alkaline leaching followed by fusion of the resulting leaching residues with caustic soda. The experimental results show that the extraction of zinc is heavily dependent on the contents of iron in the dusts. The higher iron content, the lower extraction of zinc is obtained. 53% and 38% of zinc can be extracted when both dusts were directly contacted with 5mol·L^-1 NaOH solution for 42h. The remaining zinc left in the leaching residues, which supposed to be present as zinc ferrites, can be further leached when the residues were fused with caustic soda. Quantitative extraction of zinc can be obtained from the leaching residue of Sample A while only 85% from Sample B. The extractability of zinc from dusts wit hvarious contents of iron is compared. The production flowsheet for zinc from the dusts using the process proposed is discussed.