U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Report of Investigations 8374: Citrate-Process Pilot-Plant Operation at the Bunker Hill Company

Public Domain
File Language:
English


Details

  • Personal Author:
  • Corporate Authors:
    United States. Bureau of Mines
  • Description:
    A goal of the federal Bureau of Mines is to minimize the undesirable environmental conflicts and impacts associated with mineral processing operations. To help reach this goal the Bureau operated a citrate-process pilot plant for the removal of sulfur dioxide from lead smelter sintering machine waste gases to test the process. The process uses a carboxylate solution such as citric acid to absorb sulfur dioxide from waste gases. The absorbed sulfur dioxide is subsequently reacted with hydrogen sulfide to precipitate sulfur and regenerate the solution for recycle. Nominal capacity of the pilot plant was 1,000 scfm of 0.5 Vol-pct sulfur dioxide gas. The pilot plant was operated for over 5,400 hr and produced about 55 net tons of sulfur. The operation demonstrated that (1) 99 pct of the sulfur dioxide could be removed from lead smelter sintering machining waste gases containing from 0.1 to 0.6 Vol-pct sulfur dioxide, (2) sulfur precipitation and solution regeneration with hydrogen sulfide in conventional stirred vessels was readily controlled, (3) precipitated sulfur could be continuously recovered as a 99.5-Pct- pure product by flotation and melting, and (4) 78 dry-vol-pct hydrogen sulfide gas could be produced from pilot-plant product sulfur, natural gas, and steam. [Description provided by NIOSH]
  • Subjects:
  • Series:
    Mining Publications
  • Subseries:
    Report of Investigations
  • ISSN:
    1066-5552 (print)
  • Publisher:
    United States. Bureau of Mines
  • Document Type:
    Text
  • Genre:
    Case Report
  • Rights:
    Public Domain
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    SLRC - Salt Lake City Research Center
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    88 pdf pages
  • NIOSHTIC Number:
    nn:10007962
  • NTIS Accession Number:
    PB80-122708
  • Citation:
    NTIS: PB 80-122708 :77 pages
  • Federal Fiscal Year:
    1979
  • Peer Reviewed:
    False
  • Source Full Name:
    NTIS: PB 80-122708
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:a712a1b5c6230d14ad0dab8ee9f1902743c72d604694b0fba22ef826729238d052578bc787f99276d8480136da5b93c84e8735334f4a16997231a25eb94d1ea9
  • Download URL:
  • File Type:
    Filetype[PDF - 2.75 MB ]
PREVIOUS
File Language:
English
ON THIS PAGE
Details
CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners.

As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP