Experimental Study and Mechanism Analysis of Modified Limestone by Red Mud for Improving Desulfurization

It is noticed in a few steam turbines that there are a pad temperature rise of more than 10°C and a radial journal movement of more than 50 μm in the bearings adjacent to control stage when they operate under partial arc admission at 60–80% of their full load. It is found through fault mechanism analysis and experimental study that the fault is caused by partial arc steam forces acting on control stage. A fault characteristic is concluded to help identify this fault. Diagonal admission is therefore proposed as an economic solution for elimination of this fault and it is proved to be effective through practical test.

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Experimental Study of Alkali-Activated Red Mud Cement Material

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.357-360.705 ◽

2013 ◽

Vol 357-360 ◽

pp. 705-709 ◽

Cited By ~ 2

Author(s):

Min Zhou ◽

Yong Sheng Ji ◽

Zheng Chang ◽

Chan Zhang ◽

Xing Tong Yan

Keyword(s):

Experimental Study ◽

Flexural Strength ◽

Red Mud ◽

Hydration Reaction ◽

Cement Material ◽

Alkali Activated Slag ◽

Strength Variation ◽

Activated Slag ◽

Alkali Activated ◽

Sem Test

In order to use the alkaline ingredient in red mud, this paper studied the strength variation law of alkali-activated red mud and lime cement material combined with slag. When the content ranged from 0 wt% to 20 wt%, the experiment showed that the flexural strength increased when the content increased, and the compress strength increased when the content increased with the content ranging from 0 wt% to 15 wt%. When the content reached 25 wt%, the strength of alkali-activated red mud cement material was equal with alkali activated slag cement. The SEM test of alkali-activated red mud cement material showed that red mud and lime both participated in hydration reaction fully.

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Experimental Study on the Refining Desulfurization Slag Made from the Reduced Red Mud

steel research international ◽

10.1002/srin.201400181 ◽

2014 ◽

Vol 86 (5) ◽

pp. 536-543

Author(s):

Dong Kai ◽

Wu Long ◽

Liu Wenjuan ◽

Zhu Rong

Keyword(s):

Experimental Study ◽

Red Mud

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The Experimental Study and Mechanism Analysis on Flotation Separation of Tetradymite and Pyrite

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1092-1093.1490 ◽

2015 ◽

Vol 1092-1093 ◽

pp. 1490-1496

Author(s):

Hai Liang Feng ◽

Xiao Kui Che ◽

Qi Zheng ◽

Li Cheng Ma

Keyword(s):

Experimental Study ◽

Chemical Adsorption ◽

Mechanism Analysis ◽

Butyl Xanthate ◽

Mineral Flotation ◽

Ftir Spectral Analysis ◽

The Common ◽

The Difference ◽

Adsorption Quantity ◽

Dithiocarbamate Group

The experimental results of flotation of pure tetradymite and pyrite show that HL-1 is an efficient collector for tetradymite flotation. Comparing to the butyl xanthate, HL-1 has stronger collector ability and higher selectivity. It solves the common problem of the separation of tetradymite and pyrite. The difference of adsorption quantity is consistent with results of the single mineral flotation test. Through the measurements of adsorption, zeta-potential, and FTIR spectral analysis, the flotation mechanism of tetradymite with HL-1 has been discussed. It is concluded that the adsorption of HL-1 on tetradymite surface is chemical adsorption through the dithiocarbamate group of the collector chelating the Bi (III) of tetradymite to form metal complex.

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