Process for making cementitious mine backfill in a salt environm

Details Process for making cementitious mine backfill in a salt environm Process for making cementitious mine backfill in a salt environm

1994-05-23

1996-09-03

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Chemical

106710, 106791, 405128, 588257, C04B 702, B65G 500

Patent

active

055518060

ABSTRACT:
The present invention generally relates to a method for hydraulically backfilling empty mined salt cavities. The method comprises combining at least one pozzolanically active waste material with an effective amount of a cementing agent and brine to form a pozzolanic mixture, wherein the relative proportions of said pozzolanically active waste material, alkaline earth metal hydroxide or alkaline earth metal oxide and saturated brine are sufficient for reaction under conditions in said salt cavity to form a stable, low porosity, load bearing pozzolanic cement; oxidizing said pozzolanic mixture in order to substantially remove aluminum metal from the mixture; and hydraulically depositing said pozzolanic mixture in the empty salt cavity.

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"Fourth Symposium on Salt", The Northern Ohio Geological Society, Inc., vol. 2, No. 3568.

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