Excerpt from Quantitative Metallurgical Analysis: Selected Methods for Chemical Analysis of Ores, Slags, Coal, Pig Iron and Steel Process - Treat one gram of the pulverized ore in a covered casserole, under a hood, with 7 c.c. Of concentrated nitric acid and gently heat for a few moments; add five c.c. Of concentrated hydrochloric acid and again heat for a short time. Then add five c.c. Of concentrated sulphuric acid and evaporate until dense fumes of sulphuric anhydride are evolved. Cool; add 50 c.c. Of water and heat until the sulphates of copper, iron, etc, have dis solved. Filter into a small beaker, wash with a little hot water and endeavor to keep the volume of the filtrate down to about 50 or 60 c.c. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.