电解锰渣中低活性硅的活化工艺研究

Study on the Activation Technology of Low Reactive Silicon in Electrolytic Manganese Residue

利用不同促释方法对电解锰渣(EMR)中有效硅进行活化,以实现锰渣资源化利用。通过微波焙烧活化、机械球磨及机械复合3种不同方式,考察各方法对硅活化的作用,探索适合锰渣活化的方式,揭示相关活化机理。结果表明,经3种不同方式活化后,锰渣中有效硅含量均得到提高,机械复合活化的方式最好,在球磨时间为40 min,微波焙烧温度为900℃、m(EMR)/m(Na2CO3)=1∶0.6、焙烧时间为40 min时,采用该方式锰渣中有效硅含量可达16.37%。

The active silicon was activated by different methods in the process of electrolytic manganese residue（EMR）, in order to realize the utilization of EMR. Using three different ways, microwave roasting activation, mechanical milling and mechanical compound activation process, explore suitable way for manganese slag activation, reveals the activation mechanism. The results show that, after the three different ways of activation, the available silicon content all have increased to a certain extent, and among the sample, the method of mechanical compound activation works best, which has the best technical parameters as below： milling time is 40 min, the calcination temperature is 900 ℃, m（EMR）/m（Na2 CO3）=1∶0.6, calcination time is 40 min, in this way, the activation of available silicon is up to 16.37%.