| Abstract Scope |
Cold-rolling oil sludge, a hazardous waste (HW08) generated in the iron and steel industry, is characterized by flammability and toxicity. Traditional disposal methods cause secondary pollution and resource waste. Based on the Guidance Opinions issued by the Ministry of Ecology and Environment of China, this paper proposes a technical approach for the collaborative disposal of cold-rolling oil sludge using high-temperature production facilities in steel enterprises, aiming to solve the transportation challenges posed by its high viscosity. A "temperature-time correlation" mathematical model (lglg1.45t = 12.2−4.85lgT) is established to transform the determination of kinematic viscosity into simple measurements of temperature and flow-out time. The deviation between calculated and measured values is ≤±10%, meeting engineering requirements. Furthermore, four collaborative resource utilization schemes for cold-rolling oil sludge are proposed and analyzed, including the preparation of cold-bonded briquettes, use as auxiliary fuel, coal blending in coke ovens, and collaboration with sintering machines. |