This lets Biomason substitute things like mine tailings for part of the sand that would otherwise be used.
这让 Biomason 可以用尾矿之类的东西来代替原本可以使用的部分沙子。
Mine tailings
原声例句
经济学人 Science and technology
VOA 常速 2016年1月合集
" We use urban construction waste, mine tailings and urban solid wastes as raw material.We sort them by category and we transform them into a special printing ink."
“我们使用城市建筑废料、矿物残渣和城市固体垃圾来作为原材料，然后分类挑出来，将它们转化为特殊的打印墨水。”
英语百科
Tailings
（重定向自Mine tailings）
Tailings, also called mine dumps, culm dumps, slimes, tails, refuse, leach residue or slickens, are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore. Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed. The amount of tailings can be large, ranging from 90–98% for some copper ores to 20–50% of the other (less valuable) minerals.
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