Concentrating evaporators – Processes – Involving waste liquid
Patent
1979-05-09
1981-05-05
Sever, Frank
Concentrating evaporators
Processes
Involving waste liquid
34 26, 34 30, 208 13, 209 11, 210774, B01D 100, C22B 100, C22B 700, F26B 300
Patent
active
042657008
ABSTRACT:
PCT No. PCT/SE78/00029 Sec. 371 Date May 9, 1979 Sec. 102(e) Date May 9, 1979 PCT Filed Aug. 10, 1978 PCT Pub. No. WO79/00137 PCT Pub. Date Mar. 22, 1979
This specification describes a method of separating a fine-grained close-packed solid material from a liquid with which the fine-grained material is saturated. The material may by way of example consist of grindings; metal-containing pickling bath deposits; or metal oxides from metallurgical venturi-filter. The moist mixture (1) is packed in a container (2) which thereafter is closed and heated from underneath. The liquid is evaporated starting from the lower portions in the container and forces liquid from the upper portions towards the surface of the paste-like mixture, wherefrom collected liquid (9) can be removed. Common oil drums can be used as containers. When the liquid has been removed the containers with enclosures can be charged in metallurgical furnaces or can the material be dumped together with waste material without any effects detrimental to the environment.
REFERENCES:
patent: 2483937 (1949-10-01), Rosenblum
patent: 3790474 (1974-02-01), Moffit
Billgren Per A.
Karlsson Stig A.
Sever Frank
Uddeholms Aktiebolag AB
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