| Patent Number |
Title Of Patent |
Date Issued |
| 4441923 |
Integrated process using non-stoichiometric sulfides or oxides of potassium for making less acti |
April 10, 1984 |
| Disclosed is a combinative integrated chemical process using inorganic reactants and yielding, if desired, organic products. The process involves first the production of elemental potassium by the thermal or thermal-reduced pressure decomposition of potassium oxide or potassium sulfi |
| 4248695 |
Desulfurizing a fuel with alkanol-alkali metal hydrosulfide solution |
February 3, 1981 |
| Petroleum crude and certain liquid distillate fractions derived therefrom, and other sulfur containing fuels or residues are reduced in sulfur content by intimately contacting the fuel or residues with alkanol solutions of alkali metal hydrosulfides, at temperatures and pressures fro |
| 4248693 |
Process for recovering hydrocarbons and other values from tar sands |
February 3, 1981 |
| Disclosed is a process for recovering hydrocarbons from tar sands by contacting the tar sands with alkali metal sulfides or alkanol solutions of alkali metal hydrosulfides, at temperatures between 40.degree. C. and 450.degree. C., in the presence of steam or hydrogen or mixtures thereof, |
| 4210526 |
Desulfurizing fossil fuels |
July 1, 1980 |
| Hydrated alkali metal sulfides used to remove sulfur from fossil fuels to form alkali metal polysulfides which are recycled to alkali metal sulfides and elemental sulfur by thermal or thermal reduced pressure decomposition of the alkali metal polysulfides or by conversion of the hydrolys |
| 4160721 |
De-sulfurization of petroleum residues using melt of alkali metal sulfide hydrates or hydroxide |
July 10, 1979 |
| Petroleum residues are reduced in sulfur content by intimately contacting one volume of petroleum residue with at least 0.25 volume of alkali metal sulfide hydrate melt, or alkali metal hydroxide hydrate melt or mixtures thereof, within a closed system, at a temperature between 120.degre |
| 4078917 |
Extraction of antimony trioxide from antimony sulfide ore |
March 14, 1978 |
| Disclosed is a process for extracting antimony trioxide from antimony sulfide ore concentrate by solubility differential of the trioxide in lower alkanol solutions of sodium or potassium hydroxide and wherein the total amount of water contained in the concentrate, the alkanol and the |
| 4057422 |
Ore treatment process |
November 8, 1977 |
| Disclosed is a process for extracting the following metals from ores containing same: iron, copper, zinc, arsenic, antimony, molybdenum, silver, and cadmium. In the process, the ore is concentrated and dehydrated prior to treating with a saturated hydrogen polysulfide or alkali metal |
| 4018572 |
Desulfurization of fossil fuels |
April 19, 1977 |
| Coal and petroleum oils, flue gases produced by their combustion, and natural gases are desulfurized by reacting with sulfides or polysulfides of hydrogen, sodium, potassium, rubidium or cesium to form the higher sulfur content polysulfides of these metals. After these sulfides have |
