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Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7214355 | Production of lithium compounds directly from lithium containing brines Metal carbonates that are insoluble in water but that have a corresponding metal biocarbonate salt that is more than 75% by weight soluble in water are purified by preparing an aqueous slurry of the metal carbonate: introducing carbon dioxide gas to form a correspon... | 05/08/2007 |
| 7214290 | Treatment of spent caustic refinery effluents In the methods for treatment of caustic effluents described in the specification, a spent caustic refinery effluent is supplied to a submerged combustion gas evaporator in which hot combustion gas containing carbon dioxide is injected into the caustic liquid to conc... | 05/08/2007 |
| 7119228 | Process for producing methionine The present invention is directed to an improved process for producing methionine in which the by-product methionyl-methionine is quickly converted to the product methionine by a hydrolysis reaction. The process is performed at high temperatures (200° C. to 280° C... | 10/10/2006 |
| 7045104 | Volume reduction of aqueous waste by evaporative crystallization of burkeite and sodium salts A method of treating aqueous salt solutions to provide a solution suitable for vitrification to a stable glass matrix for long term storage is described. In particular, salt solutions composed of aqueous nuclear waste materials are suitable for treatment by the desc... | 05/16/2006 |
| 5900221 | Process of preparing a solution of cesium and rubidium salts The process for preparing a cesium and rubidium salt-containing solution includes a hydrothermal digestion of an uncalcined pollucite and/or calcined lepidolite particulate having an average particle size up to 0.5 mm with an aqueous solution of Ca(OH) | 05/04/1999 |
| 5866088 | Process for preparing anhydrous magnesium halide solution and process for preparing solid titanium catalyst component for olefin polymerization Disclosed is a process for preparing an anhydrous magnesium halide solution, comprising a step of distilling water off from an oxygen-containing organic solvent solution of hydrous magnesium halide containing at least calcium as an impurity, to prepare an... | 02/02/1999 |
| 5785868 | Method for selective separation of products at hydrothermal conditions Sodium and borate ions are separated in supercritical water by addition of dissolved CO2 to cause precipitation of carbonates and the formation of boric acid. Carbonates and boric acid are then recovered as separate products.... | 07/28/1998 |
| 5678240 | Sodium to sodium carbonate conversion process A method of converting radioactive alkali metal into a low level disposable solid waste material. The radioactive alkali metal is atomized and introduced into an aqueous caustic solution having caustic present in the range of from about 20 wt % to about 7... | 10/14/1997 |
| 5624647 | Method for recovery of alkali values from trona using two-stage leaching A process for recovering alkali values from trona ore by partially dissolving trona in a first dissolving solution to form a first feed liquor and undissolved trona. The first feed liquor is cooled and sodium carbonate decahydrate is precipitated. The sod... | 04/29/1997 |
| 5348689 | Molten salt destruction of alkali and alkaline earth metals A process for destroying alkali metal and alkaline earth metal-containing wastes, such as sodium, by feeding such waste into a molten bath containing a molten salt such as sodium carbonate, or a mixture of salts having a lower melting point, such as a mix... | 09/20/1994 |
| 5288472 | Process for the recovery of the sodium hydroxide and sodium chloride from the effluent of a diaphragm cell as solid sodium bicarbonate The present invention relates to a method and process for recovering solid sodium bicarbonate, from the effluent, of the cathode compartment of a diaphragm cell that contains sodium hydroxide and sodium chloride. The effluent is treated with carbon dioxid... | 02/22/1994 |
| 5275794 | Process for producing sodium bicarbonate from natural soda salts Production of sodium bicarbonate from natural soda deposits that may occur as natural brines or solid soda salts is disclosed. The alkalinity in these natural soda deposits consists of carbonates and bicarbonates. The carbonates are converted to bicarbona... | 01/04/1994 |
| 5202062 | Disposal method of radioactive wastes The present invention adds carbonates or chlorides of alkaline earth metals to the radioactive wastes containing sodium sulfate and subjects sulfate group in the radioactive wastes to reduction treatment, thereby converts the sulfate group into sulfides o... | 04/13/1993 |
| 5059407 | Liquid carbon dioxide injection in exothermic chemical reactions The present invention is directed to an improved method for carrying out a exothermic chemical reaction with carbon dioxide in an aqueous environment. In the method, a fluid solution containing at least one chemical reactant which is exothermically reacti... | 10/22/1991 |
| 5055283 | Method of removing sodium polysulfide from used sodium/sulfur batteries A method for removing sodium polysulfide from used sodium/sulfur batteries provides that the cells are granulated under protective measures, the scrap is treated in a solution of sodium cyanide and the solution obtained is treated with air. The solution t... | 10/08/1991 |
| 5053144 | Method for the multistage, waste-free processing of red mud to recover basic materials of chemical industry The method of the invention is advantageously applicable to realize a multistage chemical process during which liquid clarifiers suitable for the purification of water and sewage, furthermore, fine-disperse pulverulent solid products utilizable as pait pi... | 10/01/1991 |
| 4999323 | Production of ceramic powders by emulsion precipitation processes and the products thereof The invention provides new processes for the production of precursor powders for ceramic materials by emulsion precipitation, the new processes permitting the economic production with at least some cations of uniformly small size particles (1 micrometer o... | 03/12/1991 |
| 4654204 | Production of sodium bicarbonate by reversion of soda-type feed salt Sodium bicarbonate is produced by introducing solid sodium carbonate, sodium sesquicarbonate, and/or Wegscheider's salt into a reversion slurry, saturated with respect to bicarbonate and containing at least 10 wt. % solids, to effect rapid and complete co... | 03/31/1987 |
| 4564508 | Process for the recovery of sodium carbonate from salt mixtures Mined salt mixtures comprising sodium-carbonate, -bicarbonate, -chloride, -sulfate, and -double salts, such as trona and burkeite, are leached with a bicarbonate-saturated solution and added carbon dioxide to selectively dissolve the sodium chloride, sodi... | 01/14/1986 |
| 4303621 | Process for the recovery of methionine and potassium bicarbonate Methionine and potassium are recovered from the recycling solution of the potassium carbonate-methionine process by concentrating the mother liquor after the methionine precipitation and with cooling carbonating the mother liquor.... | 12/01/1981 |
| 4291002 | Process for producing sodium carbonate from complex brines A process for the production of sodium carbonate wherein sodium bicarbonate is recovered from a brine containing sodium carbonate by carbonation of the brine under controlled conditions. The sodium bicarbonate is crystallized from the carbonated brine in ... | 09/22/1981 |
| 4225565 | Process for treating waste slags In the treating of waste slags produced in the desulfurization and/or dephosphorization of molten pig iron with alkali carbonates, the alkali is recovered by extracting said waste slags with hot water while feeding carbon dioxide gas to form an extraction... | 09/30/1980 |
| 4209399 | Process for the working up and regeneration of wash waters containing ammonium A process for regenerating an ammonium, heavy metal salts, ammonium nitrate nd organic substances containing wash water resulting from the production of a hydrated oxide of an actinide which comprises evaporating said wash water to a concentration of at le... | 06/24/1980 |
| 4164543 | Process for regenerating brines containing sodium sulfites and sulfates Process for regenerating brines containing simultaneously sodium sulfites and sulfates so as to produce sulfur dioxide and an alkaline solution usable for absorbing sulfur dioxide, comprising contacting the brine with ammonium bisulfate, sodium bisulfate ... | 08/14/1979 |
| 4153670 | Method of treating an alkali metal sulfide liquor A method of treating an aqueous alkali metal sulfide-containing liquor to remove the sulfur values therefrom. Broadly, the method comprises introducing an alkaline liquor containing an alkali metal sulfide into a neutralization zone where it is intimately... | 05/08/1979 |
| 4148684 | Methods for recovery and recycling of chemicals from sodium sulfite and sodium bisulfite pulping operations An improved method for recovering spent sodium and sulfur components in sodium sulfite and sodium bisulfite pulping operations. The method involves reduction burning of spent liquor to convert it to smelt and the treatment of this smelt in a sequence of o... | 04/10/1979 |
| 4084959 | Method for continuous refining of a molten iron base metal A molten iron is continuously refined in a refining vessel of a closed type using a flux composed chiefly of an alkali metal compound so as to decrease the content of P and S to a low level. The alkali metal compound is recovered from the evaporating mate... | 04/18/1978 |
| 4083930 | Method of treating alkali metal sulfide and carbonate mixtures A method of removing and preferably recovering sulfur values from an alkali metal sulfide and carbonate mixture comprising the steps of (1) introducing the mixture in an aqueous medium into a first carbonation zone and reacting the mixture with a gas cont... | 04/11/1978 |
| 3975503 | Method for producing alkali carbonate A method for producing alkali carbonate crystals, including adding to an alkali carbonate and alkali hydroxide solution stream a 10 to 75 weight-% alkali hydroxide solution, charging the resulting mixture into a CO2 -containing gas whose temper... | 08/17/1976 |
