Handbook of Metallurgy 2
Handbook of Metallurgy 2
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Conversion of refined nickel speiss into nickel.
a. CONVERSION OF ORE INTO COARSE SPEISS The basis of this conversion is the following : Ores which contain sulphur, arsenide of iron, or more arsenic than is required to form the compound NigAs are calcined and then reduced in shaft furnaces ; ores free from sulphur or arsenide of iron, and not containing excess of arsenic, are smelted direct in reverberatory or shaft furtiaces with the object of producing a slag.
a. Boasting the Ores WKen the or...es are free from sulphur, the roasting should be regulated so that the arsenic is brought down to the quantity suffi-- 558 METALLURGY cient to combine with the whole of the nickel to form Ni^As as the main product of the subsequent smelting. If the roasting is carried too &r, and the quantity of arsenic is less than this, nickel will pass into the slag. When sulphur is present, the roasting should remove it as completely as possible, unless there is also copper enough to be worth extracting. In this case sulphur should be retained in such quantity that a copper matte is formed during smelting, and separates from the speiss.
What to read after Handbook of Metallurgy 2?
You can find similar books in the "Read Also" column, or choose other free books by Schnabel, Carl, 1842?-1914 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Conversion of refined nickel speiss into nickel.
a. CONVERSION OF ORE INTO COARSE SPEISS The basis of this conversion is the following : Ores which contain sulphur, arsenide of iron, or more arsenic than is required to form the compound NigAs are calcined and then reduced in shaft furnaces ; ores free from sulphur or arsenide of iron, and not containing excess of arsenic, are smelted direct in reverberatory or shaft furtiaces with the object of producing a slag.
a. Boasting the Ores WKen the or...es are free from sulphur, the roasting should be regulated so that the arsenic is brought down to the quantity suffi-- 558 METALLURGY cient to combine with the whole of the nickel to form Ni^As as the main product of the subsequent smelting. If the roasting is carried too &r, and the quantity of arsenic is less than this, nickel will pass into the slag. When sulphur is present, the roasting should remove it as completely as possible, unless there is also copper enough to be worth extracting. In this case sulphur should be retained in such quantity that a copper matte is formed during smelting, and separates from the speiss.
What to read after Handbook of Metallurgy 2?
You can find similar books in the "Read Also" column, or choose other free books by Schnabel, Carl, 1842?-1914 to read onlineMoreLess
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