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本文用金红石型二氧化钛通过渗入锂离子,高温焙烧而研制出一种新型的二氧化钛锂吸附剂。该吸附剂对组成复杂的卤水中锂具有特殊的选择性和交换容量,对锂的交换容量达29.15mgLi/g吸附剂。该吸附剂易于用稀盐酸洗脱、再生,具有较低的溶损率。通过对实际卤水回收锂的应用实验,锂的吸附率达99.7％,钙、镁除去率达98％以上,一次吸附、洗脱,吸附剂的溶损率仅0.1％,表明这种吸附剂优于目前研制出的二氧化锰离子筛,为从低含量锂,高钙、镁卤水中提取分离锂,提供了一个有效的方法。
In this paper, a new type of lithium titanium oxide adsorbent has been developed by impregnating lithium ion with rutile titanium dioxide and calcining at high temperature. This adsorbent has special selectivity and exchange capacity for lithium in the complex brine, with an exchange capacity of 29.15 mgLi / g adsorbent. The adsorbent is easy to elute with diluted hydrochloric acid, regeneration, with a lower dissolution rate. Through the practical experiment of recovering lithium from brine, the adsorption rate of lithium reaches 99.7%, the removal rate of calcium and magnesium reaches above 98%, and once the adsorption and elution, the loss rate of the adsorbent is only 0.1%, indicating that this adsorbent is superior At present, the developed manganese dioxide ion sieve provides an effective method for extracting and separating lithium from low content lithium, high calcium and magnesium brine.