This study investigated a technique for pressing slags containing aluminum and nickel to create briquettes using a polymer binder. It examines how the pressing pressure and the proportion of nickel to carbon in the slags affects the strength of the briquettes that are produced. Some of the issues that currently plague the metallurgical sector and environmental ecology can be resolved by employing briquette slags from the secondary processing of aluminum (slags containing aluminum). In the smelting of ferrous metals, their usage as slag thinners enables the exclusion of expensive and scarce natural raw materials like bauxites and fluorspar, which has a favorable impact on the price of steel produced. The study indicated that pressing pressures between 130 and 230 MPa can produce sufficiently strong briquettes, enabling the combined use of these wastes in the metallurgical industry. The ratio of the nickel and carbon contents in the charge significantly impacts the briquettes' strength. The nickel content that is 1.5 times greater than carbon is ideal from this vantage point.