The Hunt And Douglas Process for Extracting Copper From Its Ores. With An Appendix Including Notes On the Treatment of Silver And Gold Ores
The Hunt And Douglas Process for Extracting Copper From Its Ores. With An Appendix Including Notes On the Treatment of Silver And Gold Ores
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In testing the roasted sulphuret ore, there should be determined in each sample three things : (1) the quantity of sulphate of copper, a portion of which, as already explained, should always be present ; (2) the amount of oxyd of copper ; and (3) the quantity of unoxydized copper, existing in the form of sulphuret. As sulphate of copper is readily soluble in water, it is only necessary for the first determination to boil a weighed portion of the ore with a little water, pour ofi* the clear solu...tion, wash the residue with cold water, add ammonia to the liquid, and proceed as before. Muri- atic acid diluted with twenty-five times its bulk of water will, at a boiling heat, readily dissolve the oxyd of copper firom the roasted ore, without at- tacking the sulphuret. If then we boil the roast for two or three minutes with a sufficient quantity of such dilute acid, allow the undissolved portion to settle, and wash it thoroughly with several waters, the only copper left in the residuewill be that of the sulphuret which has escaped roasting and which may be dissolved by boiling with nitric acid.
What to read after The Hunt And Douglas Process for Extracting Copper From Its Ores. With An Appendix Including Notes On the Treatment of Silver And Gold Ores?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Sterry Hunt to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In testing the roasted sulphuret ore, there should be determined in each sample three things : (1) the quantity of sulphate of copper, a portion of which, as already explained, should always be present ; (2) the amount of oxyd of copper ; and (3) the quantity of unoxydized copper, existing in the form of sulphuret. As sulphate of copper is readily soluble in water, it is only necessary for the first determination to boil a weighed portion of the ore with a little water, pour ofi* the clear solu...tion, wash the residue with cold water, add ammonia to the liquid, and proceed as before. Muri- atic acid diluted with twenty-five times its bulk of water will, at a boiling heat, readily dissolve the oxyd of copper firom the roasted ore, without at- tacking the sulphuret. If then we boil the roast for two or three minutes with a sufficient quantity of such dilute acid, allow the undissolved portion to settle, and wash it thoroughly with several waters, the only copper left in the residuewill be that of the sulphuret which has escaped roasting and which may be dissolved by boiling with nitric acid.
What to read after The Hunt And Douglas Process for Extracting Copper From Its Ores. With An Appendix Including Notes On the Treatment of Silver And Gold Ores?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Sterry Hunt to read onlineMoreLess
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