Heavy liquids for use in separation processes

Details Heavy liquids for use in separation processes Heavy liquids for use in separation processes

1999-12-16

2002-05-21

Ostrager, Allen (Department: 3725)

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

C241S021000, C204S166000, C204S166000

Reexamination Certificate

active

06390395

ABSTRACT:

BACKGROUND OF THE INVENTION
Heavy liquids are used in laboratory and plant operations to achieve separations of minerals and other components of ores, concentrates, residues, and soils. These liquids may also be employed in the separation of various types of scrap including, but not limited to, metals, plastics, rubbers, and woods. Currently, liquids such as those listed in Table 1, below, are used to effect separations.
TABLE 1
Currently Used Heavy Media Liquids
Liquid
Formula
Specific Gravity
Toxicity
Carbon Disulfide
CS
2
1.2693
High
Carbon Tetrachloride
CCl
4
1.632
High
Carbon Tetrabromide
CBr
4
2.961
High
Methylene Iodide
CH
2
I
2
3.321
High
Thallous Salts
—
5.0
Extreme
The severe toxicity of these chemicals limits their use. Therefore, there is a need for the identification of new materials and methods useful in separation procedures.
BRIEF SUMMARY OF THE INVENTION
The subject invention pertains to the use of non-toxic heavy liquids and slurries in the separation of components of ores, concentrates, residues, soils, and scrap. Specifically exemplified herein is the use of cesium and/or rubidium salts in separation processes. These salts are particularly advantageous because of their high specific gravity and solubility in water and, their low solution viscosities.


REFERENCES:
patent: 3966569 (1976-06-01), Reinhardt et al.
patent: 4529506 (1985-07-01), Smit
patent: 4557718 (1985-12-01), Kamps et al.
patent: 5277368 (1994-01-01), Kindig
patent: 5328035 (1994-07-01), Duyvesteyn et al.
patent: 5593650 (1997-01-01), Prinz et al.
patent: 0572113 (1993-12-01), None
patent: 9631435 (1996-10-01), None

Affiliated with

Also associated with

Rating

Heavy liquids for use in separation processes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heavy liquids for use in separation processes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heavy liquids for use in separation processes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2832386