Objective (1) non-metallic ore beneficiation is normally to obtain a product with some physical and chemical properties, rather than one or a few in order to obtain a useful element minerals. (2) The non-metallic ore beneficiation process should maintain the crystal structure of useful minerals as much as possible so as not to affect their industrial use and use value. (3) The calculation of non-metallic ore dressing index is generally based on the content of useful minerals, and the oxide grade and the recovery rate of useful minerals are often expressed in the form of oxides, rather than the content of certain elements in the mineral. (4) Non-metallic ore beneficiation purification not only enriches useful minerals, removes harmful impurities, but also grinds and classifies products of different specifications. Automatic Paper Bag Machine is the ideal equipment to take the flat papers with original colors or printed well as raw materials to make into paper bags with square bottoms.Its technique process is about:the flat papers after printing are delivered into the driving parts for positioning through automatic paper feeder and press line with rolling press device and then make one-side glue, folding and positioning and sticking and conveying device will convey them into the bottom position and conduct press horizontal line,open bottom,make glue and press togther and finally output finished bag products. Automatic Paper Bag Making Machine,Carry Paper Bag Making Machine,Paper Carry Bag Machine,Disposable Carry Paper Bag Making Machine Wenzhou Xinlei Machinery Co. Ltd , https://www.xinleimachinery.com