粗粒嵌布锡矿选矿工艺中常在磨矿前采用跳汰机。用手工方法定期将已形成跳汰机人工床面的粗粒锡石及连生体回收到锡品位已为成品（15－30％）的筛上精矿中。这个作业可防止大部分粗粒锡石泥化，提高选矿处理的效率。筛上精矿再碎至小于3．0mm，其粒度满足精矿配料要求。为了避 Coarse grained tin ore beneficiation process often used in the grinding jig. The jellyite and co-occurrences of the jellyfish that have formed the artificial bed surface of the jig are regularly recovered by manual methods to the sizing concentrate with the finished product (15-30%) of tin. This operation prevents most of the coarse-grained tin from becoming muddy and improves the efficiency of the beneficiation process. Sieve concentrate and then broken to less than 3.0mm, the particle size to meet the requirements of concentrate ingredients. To avoid it