Zimmer slipstream magnesium hydroxide recovery demonstration. Volume I of II. Final report, April 1, 1993--May 31, 1995 Page: 71 of 132
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Figure 26. Oxidizer Inlet-Outlet Sulfite Concentration Profile
9000
8000
7000
6000
Sulfite 5000
Concentration
(PPM) 4
3000
2000
1000
0100%
99%
98%
97%
96%
95%
94%
93%
92%
91%net
Outlet
Near (Inlet)
_ _ _ _ --Linear (%
Oxidation)9117/94 9124194 10/1/94 10/8/94 10/15/94
Date
3. Hydroclone Testing
Solid separation of magnesium hydroxide and gypsum is accomplished by using hydroclones.
Hydroclones separate the particles on the basis of differences in particle size and shape of two
major components viz. gypsum and magnesium hydroxide. Parametric testing of the primary
and secondary hydroclones was conducted to quantify the impact the hydroclone banks have on
the purity of the magnesium hydroxide and gypsum products streams. A mass balance around
the entire hydroclone system and each individual bank was performed. Hydroclones were tested
in a series configuration in which the overflow from the first hydroclone bank was the feed for
the second hydroclone bank. This test configuration was intended to increase the purity of the
magnesium hydroxide in the overflow. The optimal operating conditions of the hydroclones are
presented.
One inch vortexes were installed in the primary hydroclones. The performance of the
hydroclones with these vortexes will be evaluated. These results will be compared to results of
the hydroclones in normal operation with 5/8 inch vortexes. The primary hydroclones were
evaluated with 1 inch vortexes and 1/4 or 3/8 inch apexes at flowrates of 100 and 120 GPM.63
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Zimmer slipstream magnesium hydroxide recovery demonstration. Volume I of II. Final report, April 1, 1993--May 31, 1995, report, March 1, 1998; Columbus, Ohio. (https://digital.library.unt.edu/ark:/67531/metadc693041/m1/71/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.