Additionally, gas bubbles are removed from the molten mixture by filtering (151) and skimming.
After removal of oil by skimming, flocculation, and extraction, the inorganic treatment solution is recycled.
Contaminants that float are removed from the wastewater by skimming from the surface of the feed tank.
Hydrocarbon elements released from the contaminated soil rise to the surface of the pool and are collected by skimming for recovery.
The suspended and dissolved solids form aggregates that are recovered from the surface by means of a procedure referred to as "skimming".
A highly sensitive recording paper free from scumming can be produced by using a dispersion of a developer comprising the above sulfone.
The constitution and composition of a back layer of the original plate is improved, and thereby printing on a large number of sheets can be executed without scumming and ruck by using the original plate.
A froth wash and froth removal unit (10) for flotation apparatus comprises a froth removal apparatus (12) and a froth wash apparatus (14).
Novel depressants for depressing sulfide minerals during froth flotation of ores to recover value minerals are disclosed, as well as a method for their use in the froth flotation.
The froth flotation of coal is conducted in the presence of an epoxide conditioner.
A collector composition for use in froth flotation processes comprises two collectors.
The hydrophobic liquid can skimmed from the aqueous solution for further processing.
The invention can be used, for example, in froth flotation processes, in dissolving processes, or in the aeration of waters.
Thereafter, the slurry is subjected to a froth flotation process (96) by which a copper sulfide, such as chalcopyrite, concentrate (130) is removed.
A froth flotation method is provided for removing carbon from fly ash which utilizes an environmental friendly conditioning agent.
Novel composition which is useful as a collector for the recovery of nonferrous metal-containing sulfide minerals and sulfidized metal-containing oxide minerals from ores in a froth flotation process.
The high solids content aqueous mixture sludge is diluted and forwarded to wet deinking separation devices such as froth floatation unit (12) or the like.
The method comprises the following steps: beating; fishing slurry; hot pressing, freely drying a rough part (2) in the hot-pressing process; and punching.
Moisture flowing along the outer edges of the material flow is skimmed off by the extraction cavity and removed through an exhaust moisture escape (71) in communication with the extraction cavity.