In the past, exposure of workers to mixtures of soluble and insoluble nickel compounds by inhalation during nickel refining correlated with increased incidences of lung and nasal cancers. Insoluble nickel subsulfide and nickel oxide (NiO) are carcinogenic in animals by inhalation; soluble nickel sulfate is not. Particles of insoluble nickel compounds were phagocytized by C3H/10T1/2 mouse embryo...

The effects of Cr and Ni on three different types steel with carbon ratios under constant conditions such as the welding current 120A, voltage 80V, Diameter 10 mm angle 60 degree was observed. Nickel percentage up to 0.147% Chromium 0.083% contributed affecting mechanical properties steel. Undissolved carbide particles refine austenite grain size. In presence nickel, chromium is less effective ...

OBJECTIVE To study the mortality experience of workers at a hydrometallurgical nickel refinery and fertiliser complex in Fort Saskatchewan, Alberta, Canada. METHODS A total of 1649 male employees of Sherritt International who worked for at least 12 continuous months during the years 1954 to 1978 at the Fort Saskatchewan, Alberta hydrometallurgical nickel refinery and fertiliser complex were f...

Objective—To study the mortality experience of workers at a hydrometallurgical nickel refinery and fertiliser complex in Fort Saskatchewan, Alberta, Canada. Methods—A total of 1649 male employees of Sherritt International who worked for at least 12 continuous months during the years 1954 to 1978 at the Fort Saskatchewan, Alberta hydrometallurgical nickel refinery and fertiliser complex were fol...

During the refining process of Incoloy825 nickel-based alloy, reaction between slag and Al Ti in alloy can result oxidation loss. Therefore, effect TiO2 Al2O3 contents (CaO–SiO2–Al2O3–MgO–CaF2–TiO2) on final was investigated by slag-metal experiment a 1-kg MoSi2 resistance furnace. The thermodynamic model established based ion molecular coexistence theory kinetic two-film theory. experimental r...

OBJECTIVES This paper describes a study that was carried out in the primary nickel production industry to investigate the levels of personal exposure to aerosols containing nickel and the impact on exposure assessment of introducing new personal sampling techniques with performance consistent with the latest particle size-selective criteria. METHODS Experiments were carried out at workplaces ...