Decomposition of Potassium Ethyl Xanthate in an Aqueous Solution.
Winter-JK; Nichols-IL; Huiatt-JL
For Reference Only At the Salt Lake City Research Center :20 pages
One Bureau of Mines goal is to contribute advanced technology to the domestic minerals industry. Research at the Salt Lake City (UT) Research Center is focused on the decomposition of potassium ethyl xanthate (kex) in an aqueous solution. Kex is a reagent used for flotation of sulfide minerals in mineral beneficiation processes. Recycling of these decomposition products through waste water processing in minerals beneficiation plants may result in a loss of process efficiency. Evaluation of the data showed decomposition of kex was a first-order reaction, with a decomposition rate over four times as fast at ph 6 as at ph 10. When about 99% of the kex decomposed at ph 6, the major decomposition products were ethyl alcohol (c2h5oh) and carbon disulfide (cs2). When about 99% of the kex decomposed at ph 10, the major decomposition products were c2h5oh, carbonate (co3=), and hydrosulfide (hs-). The hs- produced would be presumed to be oxidized by dissolved oxygen from the air to other sulfur species.
For Reference Only At the Salt Lake City Research Center