Continuous process for the manufacture of calcium magnesium...

Details Continuous process for the manufacture of calcium magnesium... Continuous process for the manufacture of calcium magnesium...

C - Chemistry, Metallurgy

07

C

31/80, 260/528.2

C07C 51/41 (2006.01) C07C 53/10 (2006.01) C09K 3/18 (2006.01)

Patent

CA 1249844

ABSTRACT OF THE DISCLOSURE Finely divided lime, at any degree of slaking, is introduced in a steady stream into an agitated reactor designed to produce pellets or aggregates. Concentrated acetic acid is simultaneously introduced in a steady stream at a rate equal to the chemical combining rate required to produce calcium magnesium acetate. Water content of the reaction stream is critical; the mol ratio of water, including water of neutralization, to the calcium magnesium acetate product must fall in the range 3.3 - 7.0 in order to form the desired pellets and to avoid sticking, caking, and dust emanation from the reactor. Product pellets are drawn off in a stream from the reactor and dried for use as a non-polluting roadway and walkway deicer. Traction agent is optionally incorporated into the deicer pellets by introducing a steady stream of traction agent to the reactor simultaneous with raw materials introduction. Magnesium-to-calcium ratios greater than one are achieved by blending dolime with magnesium-rich ore.

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