Abstract Ancient Chinese brass smelting technology has promoted the invention of zinc smelting, thus becoming an important part metallurgical history. However, information concerning its origin and development is still controversial. In that regard, thorough analysis composition structure early crucial for studying various stages ancient This study aimed to investigate artifacts from Kunlun M2 ...

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...

Silica dust is widely prevalent in the atmosphere and more common than the other types of dust, thus making silicosis the most frequently occurring pneumoconiosis. In India also, studies carried out by National Institute of Occupational Health have shown high prevalence of silicosis in small factories and even in nonoccupational exposed subjects. The postero-anterior chest radiographs remain th...

Leaching mechanism of zinc oxide is important not only to understand zinc smelting process but also to develop of new zinc recycling process. Recycling of zinc is mainly done by treatment of electric arc furnace dust (EAF dust). In Japan pyro metallurgical process is enhanced for EAF dust treatment, however only zinc oxide can be recovered by pyro metallurgical process. Hydro metallurgical proc...

A simple and efficient fingerprinting method for chrysanthemum buds was developed with the aim of establishing a quality control protocol based on biochemical makeup. Chrysanthemum bud samples were successively extracted by water and alcohol. The fingerprints of the chrysanthemum buds samples were obtained using capillary electrophoresis and electrochemical detection (CE-ED) employing copper an...

The levels of cadmium, lead, copper and arsenic were determined in two batches of raw cocoa and semifinished chocolate products sampled at various intermediate stages of the manufacturing process. The metal contents of eighteen chocolate bars produced by four chocolate making factories were also determined. A nalyses of the metal contents in cocoa containing samples were effected by dry ashing ...

OBJECTIVES To investigate the effects of ethylene glycol monomethyl ether (EGME) on haematology and reproduction in exposed workers. METHODS 53 Impregnation workers from two factories that make copper clad laminate with EGME as a solvent were recruited as the exposed group. Another group of 121 lamination workers with indirect exposure to EGME was recruited as the control group. Environmental...