利用KNO_3生产中的废酸制备活性白炭黑

Manufacture of Active White Carbon Black Using Waste Acid in Potassium Nitrate Production

直接法生产硝酸钾过程中产生大量含钾废酸，若不回收利用，将严重影响硝酸的生产．本文介绍了一种利用含钾废酸生产活性白炭黑的方法，既变废为宝，又降低了活性白炭黑的生产成本．

The process for obtaining potassium nitrate from potassium chloride and nitric acid produces much waste acid containing potassium salt. Waste acid is disposal the key problem to industrialize this process. In this paper, producing active white carbon black by using this waste acid has been studied. This new process can solve the problem of waste disposal and reduce the production cost of active white carbon black.