随着我国经济的发展和汽车工业的兴起,橡胶消耗量及废旧轮胎产量正逐年上升。我国每年70%以上的天然橡胶和40%以上的合成橡胶需依赖进口,回收废旧橡胶生产胶粉,既可以作为橡胶原料的补充,又可以缓解＂黑色污染＂引发的环境问题。介绍了废旧橡胶回收利用方式,提出低温粉碎法是生产精细胶粉的发展方向。通过对液氮冷冻粉碎法、空气冷冻粉碎法和LNG冷能低温粉碎法的比较,提出直接或间接利用LNG冷能低温粉碎生产胶粉,可以降低胶粉生产成本,带动废旧橡胶循环利用产业发展。%With the development of economic and the automobile industry in China,rubber consumption and waste tire production are increasing every year.In China,more than 70 % natural rubber and more than 40 % synthetic rubber need to rely on importing every year.Recycling of waste rubber and producing rubber powder can not only as a complement of rubber raw materials,but also alleviate the environmental problems caused by the ＂black pollution＂.It was introduced the way to recycle waste rubber,and indicated that freeze grinding was the developing direction in fine rubber powder production.By comparing freeze grinding in liquid nitrogen,air freeze grinding and LNG cold cryogenic,it was pointed that by direct or indirect using of LNG cold energy to produce rubber powder by cryogenic grinding,the powder production costs can be lower,and it can also drive waste rubber recycling industry development.
展开▼
