Accession Number : ADA297788

Title :   Final Report for Contract AT-30-1-Gen-127 (United Carbon Products Company, Inc.). Part 2. Technical.

Descriptive Note : Final rept.,

Corporate Author : TECHNICAL INFORMATION SERVICE (AEC) OAK RIDGE TN

Personal Author(s) : Brooks, Lynn ; Sermon, George T.

PDF Url : ADA297788

Report Date : 20 MAY 1949

Pagination or Media Count : 21

Abstract : A plant for processing graphite to high purity by the United Carbon Products Company Inc. method was established at Bay City, Michigan. The facilities were capable of producing 900 lbs per day of high purity graphite. Graphite having a total ash content of 600 ppm and a boron content of <0.6 ppm was purified so that the total ash was 410 ppm and the boron was <10 ppm < 0.10 ppm. The processing was carried out in electric granular carbon resistance furnaces. The purification was achieved by reacting most of the elements out by the use of carbon tetrachloride with nitrogen introduced into the heated zone up to 2000 deg C, the removal of boron is accomplished by the use of a fluorinated hydrocarbon such as difluoro-dichloro-methane (i.e. "F-12") at temperatures above 2000 deg C. The "F-l2" is used only at the high temperature level to avoid reformation of carbon tetrafluoride in the graphite being processed. jg p.4

Descriptors :   *GRAPHITE, *INDUSTRIAL PLANTS, *BORON, REMOVAL, HIGH RATE, PROCESSING, HIGH TEMPERATURE, RESISTANCE, NITROGEN, PURIFICATION, HYDROCARBONS, METHANE, HEAT, FLUORINATION, GRANULAR MATERIALS, CARBON TETRACHLORIDE, CARBON TETRAFLUORIDE, ELECTRIC FURNACES.

Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Physical Chemistry
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE