FILTER DEVICE (VERSIONS) Russian patent published in 2011 - IPC B01D24/00 

FIELD: chemistry.

SUBSTANCE: first invention is meant for filtering substances from gases and solutions and the second is meant for extracting metals from solutions via metal cementation. The essence of the first invention lies in that, the filter includes fine adsorbent powder with particle size of 0.01-2000 mcm, which is put into non-woven filter material with density of 50-1500 kg/m³ by soaking the non-woven filter material with aqueous suspension of the adsorbent prepared in ratio of one part water and one part adsorbent or in a ratio which enables the aqueous suspension of the adsorbent to penetrate the non-woven filter material. In the second invention, the filter includes the following: (a) fine metal-cementing agent powder with particle size 0.01-5000 mcm, selected from a group comprising Zn, Fe, Ni, Cu, Ti, Pb, Sb, or (b) fine metal-cementator powder in form of zinc (Zn) with particle size 0.01-5000 mcm, coated with a layer of lead metal, where the metal-cementator according to version (a) or the metal-cementator in form of zinc coated with a layer of lead metal according to version (b) is put into non-woven filter material with density 50-1500 kg/m³ by soaking the non-woven filter material with aqueous suspension containing metal-cementator prepared in ratio of one part water and one part metal-cementator or in a ratio which enables the aqueous suspension containing the metal-cementator to penetrate the non-woven filter material.

EFFECT: improved adsorption and filtration properties.

2 cl, 1 dwg