What happens to arsenic during cyanidation depends what form it is in; Stibnite, orpiment, arsenopyrite, realgar. If arsenic is present, regardless of what form, solubility
Leaching Chalcopyrite is the holy grail for hydrometallurgists (Leachers), difficult to leach as the sulfur forms a layer over the mineral and makes the leaching
The possibility of cheap electric power for a number of mining areas in this country has suggested to many the idea of electric smelting of
It is common to blame irregular assay results upon volatilization and much has been written upon the subject, but there is no real evidence that,
In the Southwest a number of large steel chimneys discharge the gases from the copper smelting furnaces. Some of these chimneys show no deterioration after
The failure, or disintegration, of concrete in structures, even when the cement, sand, and coarse aggregate used have passed satisfactorily all tests and inspections, is
The haulage system employed to convey coal from the face to the outside, dates back to 300 B. C., when slaves carried the mineral from
I was requested to write an article on Longwall Mining a short time ago; however, the time has been so short that I have not
This paper is a record of the first of a series of tests on sulfide minerals to be made by the metallurgical department of the
In diamond-drill work, a true sample consists of all the material cut by the bit—both core and cuttings. As the recovery of this sample is