This customer is a manufacturer of calcium oxide. The grain size of the feed is about 3 to 5cm, the output of one hammer mill for milling quicklime is about 20 to 25 tons, the grain size of the finished product is generally below 3mm, and the sieving passing rate is generally around 95%. Both two sides of the hammer plates can be used for production and the lasting life is about 6-8 months.