The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2011
Filed:
Feb. 15, 2010
Michael Massoud Hojjatie, Tucson, AZ (US);
Constance Lynn Frank Lockhart, Tucson, AZ (US);
Thomas D. Fairweather, Dundee, OR (US);
Michael Massoud Hojjatie, Tucson, AZ (US);
Constance Lynn Frank Lockhart, Tucson, AZ (US);
Thomas D. Fairweather, Dundee, OR (US);
Tessenderlo Kerley, Inc., Phoenix, AZ (US);
Abstract
An efficient semi-continuous preparation of manganese thiosulfate (MnSO, MnTS) from manganese hydrosulfite and sulfur at elevated temperature is described. Manganese hydrosulfite is prepared from commercial manganese carbonate and sulfur dioxide. The resulting product is an emulation of liquid manganese thiosulfate and solid by-products. A manganese thiosulfate solution is produced according to the invention by use of certain mole ratios of MgCOto sulfur, and certain parameters such as the temperature of the reaction process and the pH conditions, including rate and duration of SOpurging, which causes the by-products to be reduced to less than 2% by weight. The resulting manganese thiosulfate is a pinkish liquid with concentration up to 20%.