Nature of the Accident Tin is manufactured on a very large scale in Bootle. It occurs naturally as pyrites, and arsenic is an invariable contaminant. The chemical composition of the ores varies considerably but arsenic is present in a concentration of up to 3 %. The tin is liberated from its ores by heating with carbon. The arsenical impurities float to the surface of the molten tin and form a ...

Aim, Scope and Background. Metal die casting is a highly energy-intensive industry. In addition to that, the production of primary zinc by smelting consumes huge amounts of energy as well as generates many types of pollution. This paper uses LCA to investigate the environmental performance of a zinc cast product. The areas of environmental concern are focused on the direct and indirect air emis...

Abstract Potentially toxic elements (PTEs) were investigated in the different sizes of road deposited sediments (RDS) around active smelting industry to understand their sources and assess pollution ecological risk levels. The highest PTEs concentrations was shown near raw materials import port facilities. fine particles RDS showed extremely high concentrations. Zn has mean concentration < 6...

smelting of hammerable iron and its treatment in antiquity and Medieval produced also by-product: slag. Because of small yields of iron the process produced only small amounts of slag that did not attract attention of smelters concerning its possible use. the use of slag pieces was only accidental. a lot of slag pieces and blocks from slag pit shaft furnaces were used as a material for mound bu...

normal 0 false false false en-us x-none fa microsoftinternetexplorer4 objective: occupational burns are among the important causes of work-related fatalities and absenteeism. epidemiologic assessment of these injuries is important to define high-risk jobs. we designed this study to evaluate the epidemiology of occupational burns in yazd, an industrial province in iran. materials and methods: th...

the design and manufacture of direct smelting reactors depends on the rate of the physico-chemical reactions that occur in the particles immersed into the molten bath. investigation of the effects of the important parameters that influence the smelting rate of the particles that in the furnace are both difficult and expensive if the aimed is to take measure meuts under real practical conditions...

BACKGROUND Fish consumption is considered the primary pathway of methylmercury (MeHg) exposure for most people in the world. However, in the inland regions of China, most of the residents eat little fish, but they live in areas where a significant amount of mercury (Hg) is present in the environment. OBJECTIVES We assessed concentrations of total Hg and MeHg in samples of water, air, agricult...