The lead is melted down slowly, when the impurities separate in the form of a scum (dross), which is easily removed.
The scums then settle down to the bottom of the cone, whence they are run off to the scum tank.
I figured you'd be so busy defending the scum of the earth you wouldn't have a minute to spare.
Since the specific gravity of hot liquor is less than that of cold liquor, and since the specific gravity of the scum and particles of.
There is no negotiating with the Yirkin scum or my father's killer, A'Ran thought but held his tongue, aware his only ally believed himself right in this.
You see, guys who just hunted down women looked down on the children snatchers and the scum that took on little girls thought they were a rank better than the little boy snatchers.
The temperature is then raised, and the scum which forms on the surface is withdrawn until pure litharge forms, which only takes place after all the tin, arsenic and antimony have been eliminated.
The juice is then drawn off and pumped up to one of the double-bottomed defecators and redefecated, or, where juice-heaters have been used instead of defecators, the scums from the separators or subsiders are heated and forced through filter presses, the juice expressed going to the evaporators and the scum cakes formed in the filter presses to the fields as manure.
Without this occasional drying of the soil the finer grasses and the leguminous plants will infallibly be lost; while a scum of confervae and other algae will collect upon the surface and choke the higher forms of vegetation.
during the whole time the flax is in steep. In a short time a brisk fermentation is set up, gases at first of pleasant odour, but subsequently becoming very repulsive, being evolved, and producing a frothy scum over the surface of the water.
Many of the freshwater algae which form a mere crust, such as Palmella cruenta, may be placed in a vessel of water, where after a time they float like a scum, the earthy matter settling down to the bottom, and may then be mounted by slipping a piece of mica under them and allowing it to dry.
The sloping sides of the conical bottom can be freed from the coating of scum which forms upon them every two or three hours by two rotatory scrapers, formed of L-irons, which can be slowly turned by an attendant by means of a central shaft provided with a suitable handle.
A modification of the system of double-bottom defecators has lately been introduced with considerable success in San Domingo and in Cuba, by which a continuous and steady discharge of clear defecated juice is obtained on the one hand, and on the other a comparatively hard dry cake of scum or cachaza, and without the use of filter presses.
The crude phosphorus is purified by melting under water and then filtering through animal black and afterwards through chamois leather, or by treating it, when molten, with chromic acid or a mixture of potassium bichromate and sulphuric acid; this causes the impurities to rise to the surface as a scum which can be skimmed off.
When kept fused in the presence of air lead readily takes up oxygen, with the formation at first of a dark-coloured scum, and then of monoxide PbO, the rate of oxidation increasing with the temperature.
In most cases the purification consisted in removing the free fatty acids from rancid oils and fats, the caustic soda forming a soap with the fatty acids, which would either rise as a scum and lift up with it impurities, or fall to the bottom and carry down impurities.
Don't expect me to feel remorse for the scum of the Earth.
He who puts the green scum aside can drink the water.
scum bags areas.
dole scum apparently assured, the Snells are tightening their belts.
New Labor media lackeys of the type of Toynbee and Simon are the scum of the earth.
Bring to the boil, removing any scum from the surface.
The Face and iD magazine are gonna lap it up like the scum they are.
My intelligence far surpasses any of you worthless scum.
Worse—she's selling it to someone she knows is scum!
Have my magic stripped and turned into a blood monkey for demon scum.
Worseâ€”she's selling it to someone she knows is scum!
I bet da scum dat did dis to my dad get away wit it.
The boiler is heated by a furnace, and the oil is brought gradually to the point of ebullition, at which it is maintained for two hours, during which time moisture is driven off, and the scum and froth which accumulate on the surface are ladled out.
This operation is no doubt intended to remove the oxygen diffused throughout the metal as oxide, part of it perhaps chemically by reduction of the oxide to metal, the rest by conveying the finely diffused oxide to the surface and causing it to unite there with the oxide scum.
The oil which exudes is mixed with water and heated till the water boils, and the mucilaginous matter in the oil separates as a scum.
When cold the pan was chipped away, and the cake of glass broken up into convenient pieces, free of sediment and of scum.
Chants included We beat the scum, Munich song, Marching on together, we are Leeds.
During calm weather, the algae can rise to the surface forming a scum.
Beyond the excuses they are all just murdering scum.
Things aren't looking good for Earth as alien scum is invading the planet and wrecking everything in sight.
Why on earth are we getting involved with such a bunch of criminal scum?
Personally if I found some low life scum selling drugs to my kids I would not stop at giving them a kicking.
Suddenly after one hour there was a black cliff approximately 30 meters in front and white scum of breaking sea.
Clean shower doors with a used dryer sheet to dissolve soap scum.
Remove the scum daily for the best results.
This is what he said of what he committed on behalf of the cruel twisted murdering piece of sub human scum Galtieri... .
Yes he's aggressive, yes he's chav scum, yes he swears at referees.
A natural compound from ' pond scum ' shows potential activity against Alzheimer's.
I agree with all the posts about council estate scum bleeding the bank dry which we pay into!
scum of the earth.
scum of capitalist society - parasites off the working people.
scum of the universe.
scum from the surface.
skim off the scum as it forms on the surface.
thieve about time we got tough in our community on the anti social thieving scum who prey on us.
skua, shade; connected with an Indo-European root sku, cover, whence "scum," Lat.
Dont expect me to feel remorse for the scum of the earth.
Things are n't looking good for Earth as alien scum is invading the planet and wrecking everything in sight.
This is what he said of what he committed on behalf of the cruel twisted murdering piece of sub human scum Galtieri....
Some of the kids on teh bus, will, living in teh scum bags areas.
Yes he 's aggressive, yes he 's chav scum, yes he swears at referees.
A natural compound from ' pond scum ' shows potential activity against Alzheimer 's.
I agree with all the posts about council estate scum bleeding the bank dry which we pay into !
Go visit Allah right away, scum of the earth.
Those who manage to avoid work are the moral scum of capitalist society - parasites off the working people.
They were going to save our club from the scum of the universe.
Gently bring to a simmer and skim off the scum as it forms on the surface.
It 's about time we got tough in our community on the anti social thieving scum who prey on us.
We HATE those scum over here... ****ing right about that, ****ing useless bastards !
Natural Bathroom Cleaner - Specially formulated for the stains that develop in the bathroom like soap scum and rust, this cleaner can work on counters, sinks, tubs, enclosures, shower doors, and more.
This will probably be the toughest part of the job because you need to get rid of all the soap scum and lime scale that may have accumulated.
When it has reached the boiling point, leave it to simmer for ten minutes; a thick scum will then have formed.
Do not pour the stock directly on the napkin or the scum will clog it, but let it first run through a fine wire strainer which will catch the scum and the shells.
A polyester curtain is much healthier for you than a plastic or vinyl option and so long as you spot clean it when any mold or soap scum starts to appear, you should be fine.
The fermentation will create a thick scum on top of the liquid, killing any pathogens and separating the seeds from their natural fluids.
Spoon the scum off the liquid and rinse seeds well in a fine mesh strainer.
Don't allow algae and scum to build up on the glass sides of the tank or on the tank fixtures.
It is more drying to the skin and leaves a soap scum ring around the tub.
When taking a tub bath, how many times have you seen scum floating on top of your bath water?
That scum is from some of the commercially made detergents.
You never see soap scum floating on top your bath water with handcrafted soap.
Many people may miss this step, or feel that it doesn't matter, but that scum that rises to the top is the waste product of the fermentation process.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.