档案库 · 气候与能源 · 产品决策 · 2024–2025
Fortera：附加装置捕获窑炉CO2并转化为低碳水泥
一种附加装置捕获水泥窑的废CO2，并将其矿化为低碳水泥——在雷丁得到验证，现由微软资助，目标年产40万吨。
Fortera
做的是什么生意
Fortera is a materials technology company whose ReCarb process bolts onto an existing cement plant: it draws CO2 from the kiln flue-gas stack and mineralizes the gas into ReAct, a low-carbon calcium-carbonate cement that can be blended with or replace ordinary Portland cement. ReCarb cuts CO2 by about 70% ton-for-ton, runs the kiln cooler, and converts waste gas into additional product instead of releasing it.
起因
Cement production accounts for roughly 8% of global CO2, and most of it is chemical: when limestone is heated in a kiln, nearly half the feedstock is lost as CO2. Fortera's answer, built on more than a decade of testing and over 100,000 hours of research, was not a new kind of kiln but a bolt-on — capture flue-gas CO2 and mineralize it into ASTM-approved ReAct cement, usable on its own or blended.
经过
On April 12, 2024 Fortera opened its Redding ReCarb Plant beside CalPortland's cement works in Redding, California — billed as the first industrial green-cement and carbon-mineralization facility in North America. It captures 6,600 tons of CO2 a year and produces 15,000 tons of ReAct, cutting emissions about 70% ton-for-ton at a kiln temperature of 1,100°C rather than 1,450°C. On September 23, 2025 Microsoft's Climate Innovation Fund invested to help build a 400,000-ton-per-year facility and took procurement rights to ReAct plus environmental attribute certificates.
结果
Still scaling: as of late September 2025 Fortera operates the 15,000-ton Redding plant, has placed ReAct in real construction projects, and holds Microsoft funding plus an anchor customer for its first 400,000-ton-per-year commercial facility.
背景
水泥生产约占全球CO2排放的8%，其中大部分是化学过程：在窑炉中加热石灰石时，近一半原料以CO2形式释放。Fortera经过十多年的研究和超过10万小时的研发，找到了不同的解决方案——不是新窑炉，而是称为ReCarb的附加装置，它捕获烟道气CO2并将其矿化为ReAct，一种经ASTM认可的低碳水泥，可与普通波特兰水泥混合或替代。
2024年4月，Fortera在加利福尼亚州雷丁市，毗邻CalPortland水泥厂，开设了ReCarb工厂，声称是北美首家工业绿色水泥和碳矿化设施。该工厂从CalPortland的烟道中每年捕获6,600吨CO2，年产15,000吨ReAct，每吨减少约70%的排放，并在1,100°C而非通常的1,450°C下运行。
2025年9月23日，微软气候创新基金投资支持Fortera首个年产40万吨的全面设施。微软获得了ReAct的采购权和环境属性证书，以计入其范围3排放，其影响力投资经理作为观察员加入Fortera董事会——一个以锚定客户资助工厂的案例。
这件事要成立，得有什么
- 不要要求水泥制造商重建：ReCarb可附加在现有窑炉上，工厂从相同的石灰石中生产更多可售水泥。
- 符合ASTM标准的产品，其性能与普通水泥相当，消除了行业关于绿色建材性能不佳的理由。
- 微软的采购权和属性证书将气候投资转化为确凿的需求，为首个全面工厂提供了商业依据。
可借鉴之处
不要要求大宗商品行业更换其机器；销售能将废物转化为产品的附加装置，并由需要减排的锚定买家资助首个大型工厂。
后续进展
截至2025年9月23日，Fortera运营着年产15,000吨的雷丁工厂，已在如DPR和UC Berkeley等实际浇筑中使用ReAct，并拥有石灰生产商Graymont等合作伙伴。微软气候创新基金投资以支持首个年产40万吨的设施，获得采购权和环境属性证书，助力其2030年碳负排放目标；影响力投资经理Erik Urosa作为观察员加入董事会。Fortera声称其成本与普通波特兰水泥相当，且CO2排放低约70%——这是改造而非绿色溢价。
资料来源
- Fortera Lowers Carbon Emissions with Opening of its First Industrial Green Cement Plant
- New lower-carbon cement plant captures CO2 from normal cement plant
- Fortera Secures Microsoft Funding for Low-Carbon Cement Production
- Microsoft invests in Fortera to scale low-carbon cement production
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