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| Number | Title | Issue Date |
| 3956457 | Preparation of sodium carbonate monohydrate Sodium carbonate monohydrate from crude trona is prepared by calcining the crude trona to crude sodium carbonate, dissolving the crude sodium carbonate in an aqueous solution, clarifying and filtering the resulting solution to remove insoluble material to... | 05/11/1976 |
| 3953582 | Process for the separation of sodium azide A process is provided for the continuous separation of suspended basic alkali metal azide particles from a liquid reaction medium by bringing the liquid reaction medium into contact with a non-reactive mineral oil whereby the suspended metal azide particl... | 04/27/1976 |
| 3953073 | Process for the solution mining of subterranean sodium bicarbonate bearing ore bodies This invention relates to the solution mining of subterranean trona deposits which comprises treating the ore "in situ" with an aqueous solvent containing sodium hydroxide at a concentration of not less than approximately 1% and no greater than that which... | 04/27/1976 |
| 3945880 | Sodium chloride removal in pulp mill systems Smelts produced in Kraft mill and soda mill spent pulping liquor recovery operations and containing sodium chloride are treated to remove sodium chloride therefrom in pure form while the removal of usable components is avoided. A solid mixture of sodium c... | 03/23/1976 |
| 3941723 | Crystallized alkali metal silicate with sequestering agents Composite crystals of alkali metal silicate, particularly hydrated sodium metasilicates such as sodium metasilicate pentahydrate with sequestering agents, are formed by co-crystallization of liquors that contain both alkali metal silicate and sequestering... | 03/02/1976 |
| 3933977 | Process for producing sodium carbonate This invention involves a process for producing high bulk density sodium carbonate from crude trona wherein sodium carbonate monohydrate purge streams containing high amounts of organic impurities are passed to an anhydrous crystallizer operated at temper... | 01/20/1976 |
| 3933972 | Process for preparing pure sodium bichromate Processes for preparing vanadium- and chlorine-free sodium bichromate which comprises concentration of a sodium chromate liquor so as to cause formation of crystals of neutral sodium chromate tetrahydrate, separation of these crystals from their mother li... | 01/20/1976 |
