Slag viscosity
In nature, iron, copper, lead, nickel, and other metals are found in impure states called ores, often oxidized and mixed in with silicates of other metals. During smelting, when the ore is exposed to high temperatures, these impurities are separated from the molten metal and can be removed. Slag is the collection of compounds that are removed. In many smelting processes, oxides are introdu… WebThe slag viscosity, surface tension, and presence of suspended second phase particles are critical slag properties to sustain foaminess. Product quality Lime and dolime quality attributes such as chemical composition and loss on ignition influence the amount of lime, time, and energy required to attain slag properties critical for foaminess.
Slag viscosity
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WebNov 1, 2007 · Slag viscosity is key factor of liqiud steel refining and the smooth slag tapping of entrained flow coal gasifiers, and the accurate estimation of slag viscosity can provide … WebAs process feedstocks to pyrometallurgical operations become more varied, and complex control over the viscosity, one of the key properties of the slag system, becomes more challenging. To ad-dress this problem new slag viscosity measurement and modelling tools have recently been devel-oped. The viscosity measurements are undertaken using a …
WebAug 7, 2015 · Slag viscosity is a transport property that relates to the reaction kinetics and the degree of reduction of the final slag. Slag viscosity also determines the slag– metal separation efficiency, and subsequently the metal yield and impurity removal capacity. In operation, the slag viscosity is indicative of the ease with which slag could be ... WebApr 12, 2024 · The viscosity was in the range of 0.002-2.000 Pa·s, a common variation range for the slag phase, which is the main phase by volume in lead oxidation/reduction furnaces. For all the presented cases, the total volumetric gas flow rate was 12000 m 3 ·h −1 , which is in the range of the commonly operated 5000-15000 m 3 ·h −1 for SKS copper ...
WebThe viscosities of all slag samples are under 0.5 Pa·s at above 1460°C. As temperature reduces to 1440°C, the viscosity of sample R3 (C/S = 1.44) goes up to 0.92 Pa·s and the viscosities of sample R2 (C/S = 1.34) and sample R3 both exceed 1.0 Pa·s with temperature continuous decreasing to 1420°C. WebAug 1, 2015 · The slag viscosity is determined by the ratio of slag components and how these components make the slag thin or thick. It is the balance of these components to make the correct slag viscosity to hold the bubbles longer. SiO2, FeO, and Al2O3 makes the slag thinner while CaO and MgO makes the slag thicker.
WebMar 5, 2024 · Viscosity is the main factor affecting the fluidity of slag, and many scholars have analyzed the influence factors and control mechanisms of various kinds of slag viscosity with the objective of securing a universally applicable model to predict the viscosities of different kinds of slag changes under different temperatures [ 6 – 15 ].
WebDec 12, 2024 · Through the viscosity analysis in Figure 4, the BFS in a high temperature zone had a low viscosity which could guarantee good fluidity of BFS, and the viscosity of alkali slag was less than that of acid slag at the same temperature. The viscosity of alkali slag was greatly affected by temperature. With the decrease of temperature, the viscosity ... nature coast window and doorWebSep 1, 2024 · Different slag characteristics, such as liquid phase composition, concentration of solid phases, and crystal morphology, have different impacts on the slag viscosity. However, the effect of... marine engineer salary in canadanature co greening australiaWebJul 16, 2024 · The viscosity of slags containing crystallized solids is always of great interest for materials scientists working in high-temperature slag processing, as it … marine engineer salary philippinesWebFeb 28, 2016 · Fluorspar modifies slag viscosity because modify the silicates formed during the smelting process. An excessive addition attacks the crucible and reduces borax action on metallic oxides. gold smelting furnace . When the flux and the charge are mixed in the right proportion, the slag will take the right smelting point, density and viscosity are ... nature coffee paintingWebFeb 26, 2013 · Viscosity is a key property of the slag required for optimization and improvement of various metallurgical operations. “FeO”-SiO 2 system in equilibrium with … nature collage art ideasWebNov 17, 2024 · The viscosity and the activation energy for viscous flow of slag melts both decreased as the ZnO content was increased from 0 wt.% to 20 wt.%. The first addition of ZnO to 16 wt.% can reduce the T Bk of the slag, but further increase of ZnO content to 20 wt.% showed an opposite effect. 2. nature collage for kids