Waste copper slag is a typical hazardous solid waste containing variety of valuable elements and has not been effectively disposed so far. In this paper, stepwise extraction process was proposed to recover (copper, iron, lead zinc) from slag. The specific procedures are as follows: (1) A flotation adopted enrich copper, when the grade in concentrate 21.50%, recovery rate 77.78%. (2) tailings we...

Unconstrained metal powders of Cu, Cr, Ni and Al were applied to submerged arc welding (SAW) clarify the chemical behaviour copper in this modified SAW process. Aluminium is avoided because it easily oxidised. Excessive aluminium oxides form slag or inclusions weld will lead poor materials properties. an effective deoxidiser can be used prevent Cr loss by preventing oxidation these metals. The ...

This study presents the result of using melting to recover both industrial sludge slag (the main constituent of which is calcium fluoride) and water works sludge slag as fine aggregate in cement. The main characteristics of both slag and cement mortars were measured to evaluate the feasibility of using slag as aggregate. In this study, the slag replacement ratios were 0, 10, 20, 30, 40, and 50%...

In pursuit of carbon neutrality, the demand for metals that are necessary development clean energy technologies is rapidly increasing. Metallurgical waste, such as slag, presents a promising secondary source these key metals. This research aims to develop an eco-friendly hydrometallurgical process recover Cu, Ni, and Co from discarded copper/nickel slag. High-pressure acid leaching (HPAL) was u...

Multi-faceted experiments were conducted to measure the properties of several mold slags, needed for fundamental characterization of heat transfer and friction in the interfacial gap between the shell and mold during the continuous casting of steel. A novel apparatus was used to measure the friction coefficient between solidified mold flux and copper at elevated temperatures. The measured softe...

In the process of zinc smelting, when chloride ion concentration exceeds 100 mg/L, it continuously corrodes electrode plate and affects stability electrodeposition process. Therefore, must be reduced below mg/L. Compared with other methods used to control reactions Cu(II), use copper slag produced in smelting without additives does not cause reverse dissolution; reduce cost, turn waste into tre...

for beneficiation of converter slag, the role of surface phenomena on slag composition was studied. this work includes some experimental data, which were measured for basic oxygen steel (bos) slag in isfahan steel plant. all data were collected on site in the plant. the results support the idea that surface activity plays a major role in converter slag formation. it was also a new finding that ...