Steven H Feldman

US Patent:

20150239782, Aug 27, 2015

Filed:

Apr 30, 2014

Appl. No.:

14/266627

Inventors:

- Hunt Valley MD, US
Dennis C. PARKER - Sparks MD, US
Paul FENDLEY - Cockeysville MD, US
Rudolf M. COETZEE - Paxton MD, US
Steven B. FELDMAN - Cockeysville MD, US

Assignee:

Active Minerals International - Hunt Valley MD

International Classification:

C04B 18/12
C04B 14/00
E21B 43/12
C04B 28/04

Abstract:

A composition in the form of a backfill is described. The composition comprises one or more mine tailings present in an amount greater than 50% by weight of the composition, one or more cementitious binder materials present in an amount ranging from 0% to 12% by weight of the composition, attapulgite present in an amount ranging from 0.01% to 4.00% by weight of the composition, and water. The fines content (Fc) of the one or more mine tailings is greater than or equal to 3%. Although subject to many uses, in some embodiments, the composition is suitable for managing tailings to be stored above ground or underground. For example, in some embodiments, the composition is suitable for filling mined out areas.

US Patent:

20140234032, Aug 21, 2014

Filed:

Apr 30, 2014

Appl. No.:

14/266650

Inventors:

- Hunt Valley MD, US
Dennis C. PARKER - Sparks MD, US
Steven B. FELDMAN - Cockeysville MD, US
Rudolph COETZEE - Paxton MD, US

Assignee:

Active Minerals International - Hunt Valley MD

International Classification:

B65G 53/30

US Classification:

406 51

Abstract:

A method of transshipping solid particulates in an aqueous suspension of solid particulates, comprising dispersing solid particulates in an aqueous liquid in the presence of at least one mineral suspending agent to form the aqueous suspension of solid particulates. The aqueous suspension of the solid particulates is hauled via a first vehicle a distance greater than or equal to 1 km. The aqueous suspension of the solid particulates is transferred from the first vehicle to a second vehicle. The aqueous suspension of solid particulates is hauled via a second vehicle a distance greater than or equal to 1 km.