赤泥“变身记”：钢铝产业跨界融合的绿色循环实践

基础金属	铜电解铜铜精矿铜管铜棒废铜铜排铜合金精铜杆再生铜杆铜板带铝铝土矿氧化铝电解铝铝辅料铝棒铝合金锭废铝铝杆铝型材铝板卷铅铅精矿铅锭铅蓄电池再生精铅还原铅废铅蓄电池铅合金锌锌精矿电解锌锌合金氧化锌锌粉锡锡精矿锡锭锡材镁
稀有金属	稀土稀土矿稀土氧化物稀土金属钕铁硼稀散金属锑铋铟锗镓硒钽锆贵金属白银钨钨精矿 APT(仲钨酸铵)钨粉碳化钨钨酸钠钨条钨铁钨材钼钼精矿工业氧化钼钼铁钼化工高纯三氧化钼钼金属钛钛精矿钛渣四氯化钛海绵钛钛金属钛白粉硒
新能源	锂锂矿锂化合物金属锂镍镍矿镍铁精炼镍镍盐高冰镍 MHP 钴电解钴钴粉氯化钴四氧化三钴硫酸钴钴中间品氧化钴碳酸钴钴酸锂锰锰矿电解锰电池级硫酸锰锂电正负极三元前驱体磷酸铁正极材料石油焦针状焦包覆沥青人造石墨硅碳负极硅氧负极硅

基础金属

铜电解铜铜精矿铜管铜棒废铜铜排铜合金精铜杆再生铜杆铜板带铝铝土矿氧化铝电解铝铝辅料铝棒铝合金锭废铝铝杆铝型材铝板卷铅铅精矿铅锭铅蓄电池再生精铅还原铅废铅蓄电池铅合金锌锌精矿电解锌锌合金氧化锌锌粉锡锡精矿锡锭锡材镁

稀有金属

稀土稀土矿稀土氧化物稀土金属钕铁硼 稀散金属锑铋铟锗镓硒钽锆 贵金属白银钨钨精矿 APT(仲钨酸铵)钨粉碳化钨钨酸钠钨条钨铁钨材钼钼精矿工业氧化钼钼铁钼化工高纯三氧化钼钼金属钛钛精矿钛渣四氯化钛海绵钛钛金属钛白粉硒

新能源

锂锂矿锂化合物金属锂镍镍矿镍铁精炼镍镍盐高冰镍 MHP 钴电解钴钴粉氯化钴四氧化三钴硫酸钴钴中间品氧化钴碳酸钴钴酸锂锰锰矿电解锰电池级硫酸锰 锂电正负极三元前驱体磷酸铁正极材料石油焦针状焦包覆沥青人造石墨硅碳负极硅氧负极硅

赤泥“变身记”：钢铝产业跨界融合的绿色循环实践

2025-11-14 16:35:42 来源：北方有色网责任编辑：王欣悦

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重庆钢铁股份有限公司的炼铁厂区内，褐红色的混料正源源不断地注入烧结机料仓。“这些褐红色混匀矿里，掺了含有可利用氧化铁的赤泥，用它生产的烧结矿能替代部分铁矿石炼铁。”炼铁事业部部长助理宋明明的话语，揭示了这一工业场景背后的资源密码——既减少固废排放，又让企业每年节约数百万元铁矿石采购成本。

这些改写工业废料命运的赤泥，并非天然矿产，而是来自约200公里外亚洲单体产能最大的氧化铝企业——重庆市九龙万博新材料科技有限公司的生产尾渣。作为氧化铝行业的骨干企业，九龙万博的4条生产线满负荷运转，一袋袋氧化铝装车发往全国，而曾经被视为“负担”的赤泥，如今正成为连接钢铝两大产业的绿色纽带。

“绿色生产是传统产业的必由之路。”九龙万博负责人介绍，企业通过先进工艺将每吨氧化铝能耗降至远低于行业平均水平，更通过焙烧炉余热回收、天然气压差发电、屋面光伏发电等模式实现能源循环，成为行业唯一有余电上网的氧化铝生产企业。在一系列绿色实践中，赤泥综合利用被视为转型的核心标志，而这一探索恰是破解全球氧化铝行业共性难题的关键。

赤泥是氧化铝生产的伴生固废，全球库存量已超35亿吨，我国每年新增约1亿吨，2023年综合利用率不足10%，其规模化高效利用长期以来被称为“世界性难题”。得益于富含铁、铝硅等元素的特性，赤泥早在数年前就进入川渝地区水泥企业的视野——它能增强水泥硬度、提升流动性并降低熟料烧成温度，成为建材行业的辅助原料。

更大的突破来自钢铁领域。“我们从几内亚进口的铝土矿含铁量高，这让赤泥在钢铁冶炼中具备天然优势。”九龙万博研发中心主任解释，针对钢铁生产对原料含水量的严格要求，企业今年专门建成日产5000-7000吨的赤泥悬浮态干化生产线，仅需十几秒就能将赤泥含水量降至4%以下，彻底打通了赤泥进入钢铁生产流程的技术瓶颈。

如今，一条横跨钢铝产业的绿色循环链条已清晰成型：铝土矿经绿色智能工艺提炼出氧化铝;产生的赤泥经干化处理后，与钢铁原料掺配烧结，最终冶炼成钢坯;而高炉尾渣再与钢渣协同处理，可用于道路硬化工程。从矿石到产品，从废料到原料，资源在产业链中实现“吃干榨尽”，更为产业融合开辟了新路径。

今年初，工信部等六部门联合印发《赤泥综合利用行动方案》，明确提出2030年我国新增赤泥综合利用率达到25%的目标，为行业发展指明方向。“通过场景拓展，我们当前的赤泥综合利用率已接近20%，走在行业前列。”九龙万博负责人表示，企业正以长江沿线尤其是川渝钢铁企业为重点，深化钢铝融合实践。

为进一步挖掘赤泥价值，九龙万博已与重庆科技大学、深圳大学等多所高校开展协同科研，重点探索其在橡胶填充料、陶瓷建材、路基材料等领域的应用。在政策指引与技术驱动下，这种曾困扰行业的“工业固废”，正加速蜕变为支撑产业绿色发展的“绿色原料”，为我国铝工业转型和固废综合利用提供着可复制的“重庆经验”。

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赤泥“变身记”：钢铝产业跨界融合的绿色循环实践

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