Process for separating Cd from Zn by cementation

Details Process for separating Cd from Zn by cementation Process for separating Cd from Zn by cementation

1974-02-25

1976-05-04

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75121, 266101, C22B 1704, C22B 302

Patent

active

039544524

ABSTRACT:
Materials dissolved in water are separated from each other by means of a cementation agent. The materials treated are those having a greater hydrogen overpotential than the potential difference between the cementation agent and hydrogen gas. A water solution of material to be cemented is fed upwards to a reaction zone through a bed containing the cementation agent, and agglomerates produced sink from the bed to be crushed in a zone below the bed.
The addition of a flocculation agent to the reaction zone causes the material to cement as smooth-surfaced particles which do not adhere to each other or allow large gas bubbles to grow attached to the particles.

REFERENCES:
patent: 2245217 (1941-06-01), Mowlds
patent: 3806103 (1974-04-01), Martini et al.

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