The operation of raising a charge of 50% matte to copper usually consists of two blows.
The "American process" or "Pyritic smelting" consists in the direct smelting of raw ores tomatte in blast furnaces.
If it contains more than 55% of copper it is directly refined, while if it contains a lower percentage it is smelted with matte or calcined copper pyrites.
The "Welsh process" closely resembles the English method; the main difference consists in the enrichment of the matte by smelting with the rich copper-bearing slags obtained in subsequent operations.
A portion of the white metal is calcined to such a degree of oxidation that when fused with the unroasted portion, the reaction between the oxygen in the roasted matte and the sulphur in the raw material liberates the metallic copper.
The difficulty of effecting this double object in one operation was so great that in subsequent experiments the aim was merely to concentrate the matte to metallic copper in converters of the Bessemer type.
Many attempts have been made to use crude sulphide of copper or matte as an anode, and recover the copper at the cathode, the sulphur and other insoluble constituents being left at the anode.
The low percentage of sulphur in the roasted ore is little more than enough to produce a matte of 40 to 45%, and therefore the escaping gases are better fitted than those of most copper cupola furnaces for burning in a stove.
Lump ore alone was fed, and the resulting matteshowed a concentration of only 3 into 1.
Manner of preparation: The matte tea is prepared in the same manner as the Indian tea, that is to say, by pouring upon it boiling water during ten to fifteen minutes before using.
To obtain a good infusion five spoonfuls of matte are sufficient for a litre of water.
Some experiments have been made lately with the use of matte in the German army, and probably it would be a valuable beverage for the use of our own troops.
If, however, an ore gives a layer of matte or speise, it is best to repeat the assay by the method of calcining before fusion.
The outline was made in colours ground in turpentine, fattened and made workable with japanner's gold-size, in order to stand the matte of water-colour to be added afterwards.
A strong flat matte of water-colour is now laid all over the figure.
The matte is roasted, re-smelted with lead, and no doubt a button obtained, and further matte.
But the introduction of copper could only result deleteriously, except that it is usually accompanied by sulphur in some form, and would thus probably pass off harmlessly as a matte carrying silver.
Final cakes of matte (5) 6th Final matte three times roasted is smelted to blister copper.
He, however, describes nothing of matte smelting; in copper refining he gives the whole process of poling, but omits the pole.
Now this was Saturday, and on Saturday evenings Matte never set the herring-net, for he did not fish on Sunday.
Matte sulkily; and his wife was so frightened that she never even once thought of Ahti's cows.
We have no cow,' Matte answered; 'but we have good smoked herring, and can cook them in a couple of hours.
In all his life Matte had never remembered such a night.
In autumn, when Matte and Maie went ashore, the cow went to sea, and in spring, when they returned to the rock, there she stood awaiting them.
All good things go in threes, so Matte and his wife fished for salmon in spring, for herring in summer, and for cod in winter.
There sat Matte in his ragged grey jacket, quite alone, on the steps of the old hut, mending a net.
Matte and Maie grew fat on this fine living, and daily became richer.
Matte heard nothing more as he sat and rowed the heavy boat, while thinking of his cracked pipe and the fine tobacco.
When all was finished, the students handed Matte a shining silver coin, and allowed him to fill his pipe with a special kind of tobacco.
One day as Matte and his wife were cleaning herring on the shore they heard Prince barking, and soon there appeared a gaily painted boat with three young men in it, steering towards the rock.
But neither Matte nor Maie could sleep a wink; the one thought of how he had profaned Sunday, and the other of Ahti's cow.
But once smelted down into copper matte there's a fortune in it, as the Dutchman knew.
Still smiling, he lay again to watch the glowing matte as Billy ladled it out of the well.
Independent of the gold values it carried, one smelting would transmute their thirty-dollar ore into copper matte worth a hundred and twenty dollars a ton.
Thereafter they would be in a position to deliver "blister" copper instead of matte to the market.
If, one way or another, they succeeded in meeting their first note they really could be counted in splendid shape, for their shipments of copper matte would be on the market before the second fell due.
Though the roar of the blast fell like a lullaby on his tired ears, excitement kept him awake till the first matte flowed in a red stream out of the tap.
I saw the enemy set fire to the Café Mattewith petrol.
Matte went out with a little bag in her hand containing her savings, about two thousand francs.
The converter is lined with silica, and a charge of mattefrom the melting furnace, together with sand, is introduced, and air is blown into the mass.
Sidi Matte Buhlal is a native of Fas: the name is properly Sidi El Mattie Bû Hellal.
However, in the forests north-west of the Parana, agriculture was more practised, and the principal exports thence were the matte tea and timber.
Nickel and nickel oxide are exported to Holland and England from the United States and ores and matte are imported from Canada.
Smaller quantities of ores, matte and regulus are imported from Mexico, South America and other countries.
However, the United States has a large financial interest in the Canadian deposits, and refines most of the matte produced from Sudbury ores in a New Jersey refinery.
The Canadian government has exerted some pressure toward larger refining of nickel matte in Canada.
Canadian matte has been refined mainly in the United States, but the tendency is toward refining a larger proportion in Canada.
Small quantities of New Caledonian matte or ore are also refined in Japan, and during the war considerable amounts came to the United States.
The slag and matte formed float upon the lead in the crucible and are tapped, usually together, at intervals into slag-pots, where the heavy matter settles on the bottom and the light slag on the top.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "matte" in a variety of sentences. We hope that you will now be able to make sentences using this word.
