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The Largest Scale and Highest Degree of Automation in China! The Comprehensive Utilization Project of Metallurgical Dust of Baosteel Group Xinjiang Bayi Iron & Steel Co., Ltd. undertaken by CIEE was Put into Operation

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The Largest Scale and Highest Degree of Automation in China! The Comprehensive Utilization Project of Metallurgical Dust of Baosteel Group Xinjiang Bayi Iron & Steel Co., Ltd. undertaken by CIEE was Put into Operation

2023/03/22

Recently, the zinc-containing dust comprehensive utilization project of Xinjiang Bayi Iron & Steel Co., Ltd. (hereinafter referred to as "Bayi Steel"), which is the largest and most automated in China and undertaken by CIEE ( CIE's subsidiary), has been successfully put into operation.

 

 

The project built a new rotary kiln dezincification production line with an annual treatment capacity of 190,000 tons (dry ash) of zinc-containing dust. It adopted the new-generation "low-carbon, stable, environmentally friendly, collaborative and intelligent" rotary kiln process technology independently developed by CIE to treat zinc-containing dust, and carried out iterative upgrading in intelligent batching, intelligent kilning, intelligent slag grabbing, etc. The whole production line achieves automatic kilning, and all traveling cranes are unmanned.

 

 

The project mainly treats the 400,000 tons of zinc-containing dust that have been accumulated and stored before in Bayi Steel, as well as the newly generated blast furnace bag ash and COREX sludge every year through a rotary kiln, so that zinc element in the dust can be volatilized, enriched and recycled to obtain zinc hypoxide products; at the same time, the kiln slag after zinc removal can be returned to the sintering process for recycling, providing favorable conditions for the stable operation of subsequent ironmaking, realizing the goal of "zero discharge of solid waste from the factory" and "turning waste into treasure". While realizing the recycling of solid waste resources, eliminating environmental pollution and achieving zero discharge of solid waste from steel production, it can generate economic benefits of RMB 100 million per year for Bayi Steel, marking a new chapter in the comprehensive utilization of metallurgical dust and solid waste of Bayi Steel.

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