The result shows that refining industrial grade silicon with the method can decreasing impurity contents, reducing production cost, and decreasing environmental pollution.
结果表明：采用此法可降低工业硅中杂质含量，降低生产成本，并可减少环境污染。
2
The factors influencing sponge titanium quality and the measures of reducing the impurity content in it were summarized.
总结影响海绵钛质量的因素以及降低海绵钛杂质含量的措施。
3
For reducing the fibre to drain . Generally uses the impurity separating machine to process useful impurity in order to recycle the good thick liquid.