LEAD SMELTING
AND
REFINING

WITH SOME NOTES ON LEAD MINING

EDITED BY
WALTER RENTON INGALLS

NEW YORK AND LONDON
THE ENGINEERING AND MINING JOURNAL
1906

Copyright, 1906,
By The Engineering and Mining Journal.

ALSO ENTERED AT
Stationers’ Hall, London, England.

ALL RIGHTS RESERVED.

PREFACE

This book is a reprint of various articles pertaining especiallyto the smelting and refining of lead, together with a few articlesrelating to the mining of lead ore, which have appeared in theEngineering and Mining Journal, chiefly during the last threeyears; in a few cases articles from earlier issues have been inserted,in view of their special importance in rounding out certain of thesubjects treated. For the same reason, several articles from theTransactions of the American Institute of Mining Engineers havebeen incorporated, permission to republish them in this wayhaving been courteously granted by the Secretary of the Institute.Certain of the other articles comprised in this book are abstractsof papers originally presented before engineering societies, orpublished in other technical periodicals, subsequently republishedin the Engineering and Mining Journal, as to which properacknowledgment has been made in all cases.

The articles comprised in this book relate to a variety ofsubjects, which are of importance in the practical metallurgy oflead, and especially in connection with the desulphurization ofgalena, which is now accomplished by a new class of processesknown as “Lime Roasting” processes. The successful introductionof these processes into the metallurgy of lead has been oneof the most important features in the history of the latter duringthe last twenty-five years. Their development is so recent thatthey are not elsewhere treated in technical literature, outside ofthe pages of the periodicals and the transactions of engineeringsocieties. The theory and practice of these processes are notyet by any means well understood, and a year or two hence weshall doubtless possess much more knowledge concerning themthan we have now. Prompt information respecting such newdevelopments is, however, more desirable than delay with a viewto saying the last word on the subject, which never can be saidby any of us, even if we should wait to the end of the lifetime.For this reason it has appeared useful to collect and republishin convenient form the articles of this character which haveappeared during the last few years.

W. R. Ingalls.

August 1, 1906.