炼钢废弃料制轻烧镁球工艺 Process for making light-burned magnesium balls from steelmaking waste

    日前，俞海明创新工作室研制开发的炼钢除尘灰和废弃中间包涂料回收制作轻烧镁球替代轻烧白云石工艺，经国家知识产权局授权，获专利发明。该专利在解决炼钢废料污染、提升资源重复利用率，以及降低轻烧白云石消耗、降低轻烧白云石生产过程中的二氧化碳排放等方面，具有划时代意义。

　　据了解，目前国内、国际炼钢工艺主要采用轻烧白云石或菱镁矿制球工艺，作为炼钢化渣和溅渣护炉的主要添加原料。吨钢轻烧白云石消耗量在二十至三十公斤左右，其中轻烧白云石不仅粉末量偏高，有效成分浪费严重，而且在白云石生产过程中也会消耗大量的焦炭资源，并产生大量的二氧化碳排放。此外，废弃的中间包涂料还会造成环境的污染。

　　为了有效降低炼钢过程中，资源的浪费和环境的污染，2012年底开始俞海明创新工作室，结合炼钢现有生产工艺，以转炉除尘灰和废弃炼钢中间包涂料的再利用为突破口，通过大量的工业现场试验，利用转炉除尘灰和炼钢废弃中间包涂料氧化镁含量高的特点，将这些废料回收并用于炼钢生产，替代轻烧白云石，有效的降低了轻烧白云石的使用量。经过生产实践，目前在120吨转炉产线，已经实现了废料的有效回收和高效利用，完全替代了原有轻烧白云石生产工艺。在保护环境的同时全年还可节约生产成本648万元。

A few days ago, Yu Haiming Innovation Studio developed a steelmaking dust ash and discarded tundish coating to make light-burned magnesium balls instead of light-burned dolomite. It was authorized by the State Intellectual Property Office and patented. This patent has epoch-making significance in solving the pollution of steelmaking waste, improving the repeated utilization of resources, reducing the consumption of light-burned dolomite, and reducing carbon dioxide emissions in the production process of light-burning dolomite.

It is understood that the current domestic and international steelmaking processes mainly use light-burned dolomite or magnesite ball-making processes as the main raw materials for steelmaking slag and slag splashing furnace protection. The consumption of light-burned dolomite per ton of steel is about 20 to 30 kilograms. Among them, light-burned dolomite not only has a high amount of powder, but also has significant waste of active ingredients. It also consumes a large amount of coke resources in the production process of dolomite and produces Significant carbon dioxide emissions. In addition, discarded tundish coatings can also cause environmental pollution.

In order to effectively reduce the waste of resources and environmental pollution during the steelmaking process, Yu Haiming Innovation Studio started at the end of 2012. Combined with the existing production process of steelmaking, the recycling of converter dust removal and waste steelmaking tundish coatings was used as a breakthrough. A large number of industrial field tests, using the characteristics of high dust content in converter dust removal ash and steelmaking waste tundish coating, recycle these waste materials for steelmaking production, replacing light-burned dolomite, and effectively reducing the use of light-burned dolomite. the amount. After production practice, the 120-ton converter production line has achieved effective recycling and efficient utilization of waste materials, completely replacing the original light-burned dolomite production process. It can also save 6.48 million yuan in production costs while protecting the environment.