Magnetite pulping process

The Chemistry and Technology of Magnesia, by Mark A. Shand Copyright 2006 John Wiley Sons, Inc. 

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The Magnetite pulping process utilizes acid magnesium bisulfite solution at a pH of about 4.5 as the pulping liquor. The process produces pulp that is used to make reinforcing pulps for newsprint see Figure 15.1, which displays a schematic of the Magnetite process. The recovery of MgO is necessary for... 

Figure 15.1 Schematic diagram of the Magnetite pulping process. (Courtesy of The Babcock Wilcox Company.)...

Continuous magnetic separators such as the wet drum separators are widely used for beneficiation of ores and for recycling of magnetite or ferrosihcon from the heavy media pulps used for coal washing , or in the Sirofloc process in water treatment, as discussed in section 1.1.2. Wet drum separators are robust and surprisingly cheap to install and operate. The wet drum separator is the major workhorse but little is published on the efficiency of such devices. Suleski, for example, discusses a specific manufacturer s product. ... 

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