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Converter sludge, a byproduct produced on large amounts in the steel making process, is an important resource that can be utilized effectively. This paper describes an experiment in which converter sludge was tested as an adsorbent for the removal of phosphorus from waste water. It was found that the phosphorus removal depended on the amount of converter sludge added, the pH value and the contact time. Under laboratory conditions when the added sludge was 2. 0mg/100ml, the contact time 4h and the pH value of equalized 4, over 88% of phosphorus was removed; the experimental data on converter sludge adsorption of phosphorus in the water fitted the Freundlich isotherm model. Converter sludge was found to be very effective in adsorbing the phosphorus. 相似文献
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在碱性条件下采用过氧化氢氧化后再用盐酸蒸馏分离的方法从低品位褐煤锗精矿中回收锗。最佳工艺条件为:氢氧化钠用量为锗精矿量的30%、过氧化氢(30%)用量为锗精矿量的25%、氧化预处理时间1.5h、蒸馏盐酸用量为锗精矿量的9倍,在此条件下锗回收率可以提高到97.2%以上,比常规蒸馏方法提高31.5个百分点。 相似文献
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