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聚氨基甲酸酯耐磨橡胶(简称聚氨酯橡胶,又称橡胶王)涂层的摇床面,我国选矿厂已经使用多年。与生漆床面和普通橡胶床面比较,它具有耐磨、耐腐蚀,不脆裂和不变形的优点,但其表面光滑,不利于矿砂的分选。我们对涂层的操作方法加以改进,解决了上述问题,使它既耐用,分选指标又比较高。改进后的涂层方法是先打底漆,后刮灰,砂平,再贴布,接着再涂层(布面层第一次涂层可以考虑着底色)。涂层3～4次,在最后一次涂层上铺上(用筛子筛分)铸石粉或-80目铸铁粉,使其部分浸润和粘附于胶液表层。凝固后,扫去多余的耐磨粉料,并用废砂轮或油石磨平,摇床面就加工好了。使用上述方法涂层的聚氨酯橡胶摇床面后,去年1～9月,我厂重选工序选钨作业回收率比1979年和1978年分别提高1.97%、1.80%;锡的回收率相差无几。我们认为,改进聚氨酯橡胶摇床面涂层的
Polyurethane wear-resistant rubber (referred to as polyurethane rubber, also known as rubber Wang) coating of the bed, our dressing plant has been used for many years. Compared with the lacquer bed and ordinary rubber bed surface, it has the advantages of wear resistance, corrosion resistance, no embrittlement and no deformation, but its surface is smooth, which is not conducive to the sorting of ore. We have improved the coating method of operation to solve the above problems, making it durable, sorting index is relatively high. Improved coating method is to first primer, after scraping ash, sand flat, and then patch, and then coated (first coat layer can be considered the ground color). Coating 3 to 4 times, in the last coating on the shop (with sieve sieve) cast stone powder or-80 mesh cast iron powder, make it partially wetted and adhered to the glue surface. After solidification, sweep away the excess wear-resistant powder, and grinding with whetstone or whetstone, shaker surface is processed. After using the polyurethane rubber shaker coated by the above method, from January to September last year, the recovery rate of selected tungsten work in our re-election process increased by 1.97% and 1.80% respectively from 1979 and 1978; the recovery rate of tin was almost the same. We think that improving the polyurethane rubber shaker coating