Viscosities and densities of binary liquid mixtures of di-(2-ethyl hexyl) phosphoric acid (DEHPA) with benzene, toluene and o-xylene have been determined at 30, 35, 40 and 45 degreesC. The mixture viscosity, eta (m) is ...

Arc plasma nitriding of low carbon steel was carried out in the temperature range 1000-1100 degreesC under different gas (Ar, N-2, H-2) configurations for 15 min each. The plasma nitrided surfaces were characterized by ...

Three different types of coal were taken for microbial desulphurisation experiments using isolated cultures of Thiobacillus ferrooxidans. The samples were milled and then sieved. The effect of various parameters on microbial ...

Jigging of the -2.8 +0.7-mm size fraction of a friable, low-grade manganese ore sample from Andhra Pradesh increased the Mn content of a concentrate by 7% to 8%, with nit average recovery of 57%. The jig concentrate was ...

Chromitiferous overburden containing nickel in oxide form is reduced with CO-CO2-N-2 gas mixtures. This converts the nickel oxide to metallic nickel and restricts the iron oxide to the magnetite state to extract the nickel. ...