2a*. The data on gas holdup were plotted against superficial liquid velocity for three different disc diameters viz., 3.0, 4.5 and 6.0 cm for the promoter at a constant superficial gas velocity Ug=0.0327 m/s, and the resulting graph is shown in Fig.2b. From an observation of the plots of this figure it can be found that the gas holdup increased with increasing disc diameter. As the disc diameter increases, the size of the wake increases and also the wake retains more gas. Thus an increase in gas holdup is seen with increase in disc diameter.
These problems can be overcome by using hot metal from mini blast furnace (MBF) as iron bearing charge materials in EAF. The use hot metal offers the possibility of producing steel at lower costs than in traditional scrap based EAFs.11Use hot metal in EAF steel making has resulted in major cost saving, (including power) increased productivity and independence from steel scrap shortage and its price fluctuations. Recently, Jindal steel and power ltd. Raigarh is installing a BF of 351 m3volume for production of hot metal to be used in EAF for steel making. This furnace is rated to produce 0.238 Mt / year of hot metal / pig iron.
B).Double -sided welding procedure small deformation theory. C).Single-sided welding procedure large deformation theory D).Single-sided welding procedure small deformation theory. Simulation Result suggest that welding procedure has a certain influence on the final welding distortion. Double sided welding procedure can produce a lager tendon force so it can increase the buckling property especially in thin plate structure. Based on the simulation result, we have known that the assembly sequence has a significant influence on the final distortion.
5.2.4 Thermal conductivity test Thermal conductivity is used to calculate the heat transfer in a fluid. By adding nanoparticle to the 1D-dilute water, thermal conductivity of the fluid increases rapidly with the proportional to the % wt of a nanoparticle, according to the usage of the fluids. 6. RESULTS AND
1. Briefly discuss the importance of viscosity in chemical processes. Viscosity is the measure of internal friction of a fluid. When a layer of fluid is made to move in relation to another layer, this friction becomes apparent. The greater of friction which increase the force required for the movement, which known as shear.
For instant, the alloy will show ferromagnetic behavior when the nickel content is more than 80% at 150 ºC whereas alloy that contains less than 80% Nickel are paramagnetic at the same temperature. Effect of Nickel on the properties of Copper-Nickel alloy Nickel has a great impact on the mechanical properties and physical appearance of the alloys. Several experimental data have proven that increasing content of nickel will decrease the thermal and electrical conductivity of the metal. However, the addition of nickel is directly proportional to the increase in the proof strength, corrosion resistance and tensile strength of the metal which is very advantageous in many applications. The tensile strength and the percent elongation was plotted against weight percent of nickel as shown in Figure 2.
This structural distortion is usually due to changes in temperature as well as the tilt angle δ. Quartz type FePo4 sees great increase in cell parameters and cell volume of α phase and non linear rise with respect to changes in temperature. Main factors affecting thermal expansion includes angular variation which happens due to changes in symmetrically - independent intertetrahedral Fe-O-P bridging angles as well as the tilt angles. Therefore, the degree of the temperature affecting thermal expansion is comparable to extent of temperature affecting the tilt angle. The Landau- type model can be used to demonstrate the temperature dependence of this
they had investigate specific strength of the material improved appreciably with more addition of TiC. Muhammad Hayat Jokhio, Muhammad Ibrahim Panwar and Mukhtiar Ali Unar et al, has reported information regarding AL2O3 particles up to 10% increase in tensile strength. Pardeep sharma, Gulshan chauhan and Neeraj Sharma et al has resulted processing variables such as holding temperature , stirring speed, size of the impeller and the position of the impeller in the melt are among important factors to be considered in the production of cast metal matrix composites as these have an impact on mechanical properties. Results and Discussion Microstructures Samples of as cast MMCs for metallographic examination were prepared by grinding through different size of grit papers. Then the samples were etched with the etchant i.e.
10, is a linear curve for 4-NP reduction using AuNPs. It was observed that the increase in temperature helps the rate of reaction to increase. The activation energy was calculated from the slope of the straight line and was found to be 7.4 ± 1.34 k Cal/mol. The above results are of clear indication that catalysis usually takes place on the surface of the nanoparticles. 3.8 Catalytic reduction of potassium hexacyanoferrate (III) The electron transfer reaction between hexacyanoferrate (III) and sodium borohydride results in the formation of hexacyanoferrate (II) ion and dihydrogen borate ion and this reaction is strongly catalyzed by AuNPs.