Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB903726A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
New Jersey Zinc Co
Original Assignee
New Jersey Zinc Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by New Jersey Zinc CofiledCriticalNew Jersey Zinc Co
Priority to GB903726ApriorityCriticalpatent/GB250581A/en
Publication of GB250581ApublicationCriticalpatent/GB250581A/en
C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
C01G9/00—Compounds of zinc
C01G9/08—Sulfides
Abstract
250,581. Jackson, L. Mellersh-, (New Jersey Zinc Co.). April 6, 1926. Resistance furnaces.-Zinc sulphide is improved in colour by heating at 600-800‹ C. with exclusion of air, and superheated steam or other inert gas may be admitted. The heating may be effected in an inclined electrically heated rotary tube 25, Fig. 3, the material being fed in from a hopper 31 through a conveyer 33. The gas is admitted by a jacketed pipe 41, which enters a stationary pipe 38 which dips under the product that has accumulated in a covered receptacle 40. The tube 25 is heated by a resistance 26 the current being supplied at slip-rings 35.
GB903726A1926-04-061926-04-06Improvements in or relating to zinc sulphide pigment
ExpiredGB250581A
(en)
Improvements in the treatment of metalliferous ores, natural sulphides, arsenides, mattes, hardheads, and other metallurgical products which may have been made into forms with a binder