C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
182/1, 23/103
C01F 11/46 (2006.01) B01D 15/00 (2006.01) C04B 11/02 (2006.01)
Patent
CA 2022638
18 A process for combating pollution caused by liquid hydrocarbons involves spreading partially dehydrated calcium sulphate over the slick. The calcium sulphate is prepared by dehydrating natural gypsum at between 100°C, and 170°C, suitably for 1 to 4 hours. It is preferably in a particulate form, the majority of particles being from 1 to 100 ? in size.
Gerard Irene
Gerard Max W.
Vannier Eric F.
Vannier Maryse M.
Gerard Irene
Gerard Max W.
Lesperance & Martineau
Vannier Eric F.
Vannier Maryse M.
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