Microstructure of Coal Gangue and Precipitation of Heavy Metal Elements

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/jspec/volume-2017/3128549/figures/3128549.fig.003a.svgz" name="3128549.fig.003a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>80 times—general picture</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/jspec/volume-2017/3128549/figures/3128549.fig.003b.svgz" name="3128549.fig.003b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>160 times—enlarged</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/jspec/volume-2017/3128549/figures/3128549.fig.003c.svgz" name="3128549.fig.003c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>250 times—enlarged</td></tr><tr class="fig-image" id="d"><td><object data="https://static.hindawi.com/articles/jspec/volume-2017/3128549/figures/3128549.fig.003d.svgz" name="3128549.fig.003d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>360 times—enlarged</td></tr></table>

<div>SEM images of the weathered coal gangue at different resolutions.</div>

Journal of Spectroscopy

fig3

Figure 3

Figure 3: Microstructure of Coal Gangue and Precipitation of Heavy Metal Elements 