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A wristwatch including a watch band and a watch body having an octagon shaped perimeter and being red in color and having the word STOP thereon to resemble a stop sign.
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| Number | Title | Issue Date |
| 7041268 | Process for recovery of sulphate of potash The present invention is directed to a novel integrated process for the recovery of sulphate of potash (SOP) from sulphate rich bittern. The process requires bittern and lime as raw materials. Kainite type mixed salt is obtained by fractional crystallization of the ... | 05/09/2006 |
| 6814947 | Method for producing calcium compounds containing water of crystallization The invention relates to the production of calcium compounds containing water of crystallization by means of a chemical reaction between an aqueous alkaline sodium aluminate solution and solid or dissolved or suspended calcium (hydr)-oxide in the presence of carbon ... | 11/09/2004 |
| 6797249 | Process for the preparation of amorphous silica The invention provides a process for the production of amorphous silica from a silica-based material having a silica content of at least 90% comprising: a) heating said silica-based material with CaCl2, at a temperature in the range of about 900° C. to a... | 09/28/2004 |
| 6692710 | Method for obtaining magnesium by leaching a laterite material The present invention provides methods for the isolation and production of magnesium products from leaching of laterite material with acid. A magnesium compound is formed by downstream treatment of a leach stream after at least one of nickel or cobalt hav... | 02/17/2004 |
| 6622523 | Method of converting halogenated compounds to glass The present invention provides a two stage process of thermal separation of CFCs and HCFCs followed by vitrification of the waste into a commercially viable glass. In the first stage, the hydrogenated compounds are reacted at elevated temperature with wat... | 09/23/2003 |
| 6524546 | Process for making calcium chlorides A new process for producing calcium chloride and other metal halides from the carbonates, bicarbonates, oxides of these metals. The process utilizes the discovery that hydrogen halides, when used in a true or conventional fluidizing medium in shallow beds... | 02/25/2003 |
| 6497850 | Recovery of lithium compounds from brines Methods and apparatus for the production of low sodium lithium carbonate and lithium chloride from a brine concentrated to about 6.0 wt % lithium are disclosed. Methods and apparatus for direct recovery of technical grade lithium chloride from the concent... | 12/24/2002 |
| 6425973 | Treatment of solid containing material derived from effluent A method of treating solid containing material derived from effluent or sludge from a plant for de-inking paper, the material containing calcium in the form of one or more insoluble calcium compounds, the method including the steps of treating the materia... | 07/30/2002 |
| 6193945 | Method of recovering calcium from waste material or contaminated natural calcic material Method of recovering calcium carbonate from waste material or contained natural calcic material. Calcium is recovered by prepariag an aqueous suspension the material containing calcium to be recovered and by lowering the pH of the suspension to pH | 02/27/2001 |
| 6143260 | Method for removing magnesium from brine to yield lithium carbonate A method for producing lithium carbonate by precipitating magnesium as the hydroxide from a brine concentrated to a lithium concentration of about 6%. Lithium is then precipitated from the brine by addition of recycled limed mother liquor from a previous ... | 11/07/2000 |
| 6042794 | Process for producing anhydrous MgCl2 A process for producing anhydrous magnesium chloride comprising steps of selective calcination of Mg-containing minerals, selective leaching of magnesium, separation of insoluble impurities, precipitation of magnesium chloride hexammoniate and thermal dec... | 03/28/2000 |
| 6001316 | Method for treatment of waste material and recovering MgCl2 Method of treatment of environmentally hazardous waste material and recovering MgCl2 brine, based on dissolving of the waste material in water and hydrochloric acid and simultaneous removal of ammonia at elevated temperatures, destruction of re... | 12/14/1999 |
| 5980854 | Method for the production of a magnesium chloride solution The present invention is concerned with a method for the extraction of magnesium from magnesium-containing materials such as magnesite, dolomite and silicates materials like serpentine residues, products from the amphibole or pyroxene group. The magnesium... | 11/09/1999 |
| 5939035 | Process for treating spent potlining containing inorganic matter The present invention relates to a process for reducing and/or removing inorganic matter from a material containing inorganic matter which comprises the steps of: (i) (a) treating the material with a source of hydrogen fluoride so as to form a first resid... | 08/17/1999 |
| 5514359 | Process for making anhydrous magnesium chloride In a process for producing anhydrous magnesium chloride, the following combination of steps: drying impure salt containing hydrated magnesium chloride; establishing a solution of the hydrated magnesium chloride; removing insoluble impurities; reacting the... | 05/07/1996 |
| 5362461 | Method for recovering calcium fluoride from fluoroetchant Calcium fluoride with high purity of very small content of unreacted calcium carbonate and silica is recovered from an etchant mainly composed of hydrogen fluoride or hydrogen fluoride and ammonium fluoride. The etchant is reacted with calcium carbonate w... | 11/08/1994 |
| 5350495 | Method for separating impurities from an aqueous alkali metal chlorate electrolyte The invention relates to a method for separating sulphate from an aqueous electrolyte in an alkali metal chlorate process, thereby reducing the operating cost and increasing the possibility of further closing the electrolytical production of alkali metal ... | 09/27/1994 |
| 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 |
| 5227143 | Process for the removal of salts from aluminum dross A process is disclosed for treating salt-containing aluminum dross to remove potassium and sodium chloride salts therefrom. The process generally comprises treating the dross in a first treating step with a leaching solution having a pH maintained in the ... | 07/13/1993 |
| 5120514 | Process for production of magnesium chloride Process for production of magnesium chloride with sufficient purity for the production of magnesium metal, by leaching a magnesium containing raw material in hydrochloric acid. It is essential to keep the ratio between acid soluble iron and nickel greater... | 06/09/1992 |
| 5112499 | Process for treating pond water A two-stage process for treating acidic gypsum pond water for reuse or for discharge is disclosed. The first stage blends raw acidic pond water with recycled lime-treated slurry from the second stage of the process. The resulting elevation in pH causes Ca... | 05/12/1992 |
| 5112584 | Method for production of magnesium chloride Method for production of magnesium chloride, to be used for production of magnesium, by leaching of magnesite in hydrochloric acid. A two-stage leaching process is used where in a first reactor magnesite lumps are dissolved in hydrochloric acid. The magne... | 05/12/1992 |
| 5106509 | Process for the removal of fluoride from waste water The invention relates to a process for the removal of fluoride from waste water in the form of a slightly soluble salt by mixing the waste water with a reagent. According to the invention the fluoride containing waste water is thoroughly mixed with the wa... | 04/21/1992 |
| 5102633 | Method for reducing impurities in hexammine cobalt halide compounds A method for reducing impurity levels of calcium, magnesium and/or silicon in hexammine cobalt halide compounds involves the addition of ferric ions and, optionally, soluble fluorides to an aqueous hexammine cobalt (III) chloride solution having a pH of a... | 04/07/1992 |
| 5091161 | Production of pure magnesium chloride solution from siliceous magnesium minerals A process for the production of pure magnesium chloride liquor from siliceous magnesium minerals comprises the steps of continuously leaching the siliceous magnesium mineral with a hydrochloric acid solution at a temperature higher than 50° C. but below ... | 02/25/1992 |
| 5089094 | Process for the electrolytic production of magnesium In a process for the electrolytic production of magnesium by the molten salt electrolysis of magnesium chloride using a molten salt cell bath comprised mainly of one or more salts selected from alkali metal chlorides and alkaline earth metal chlorides, th... | 02/18/1992 |
| 4937065 | Process for the chemical-thermal degradation of haolgenated hydrocarbons Halogenated hydrocarbons are reacted in a reactor at temperatures up to 1000° C. with greater-than-stoichiometric amounts of calcium and/or magnesium silicates in a reactor for the chemical-thermal degradation of the halogenated hydrocarbons. Neither dio... | 06/26/1990 |
| 4931229 | Method and apparatus for protecting a screw extruder producing strand-shaped explosives and propellants A method and apparatus for protecting a mixing apparatus for producing strand-shaped explosives and propellants in a twin-shaft screw extruder, the housing of which is formed of housing parts connected to a clamping device acting under hydraulic pressure.... | 06/05/1990 |
| 4879101 | Method for producing a magnesia powder for use as an electrical insulating material A method for producing a magnesia powder for use as an electrical insulating material. A magnesia clinker powder is washed with an aqueous solution of an acid. The acid radical content of the powder is subsequently reduced to 0.015% by weight or less by w... | 11/07/1989 |
| 4838941 | Magnesium cement A reaction product of at least one of magnesium carbonate and magnesium silicate, with a metal chloride at a temperature exceeding 300° C. Such a product, when mixed with water, sets to be an immensely strong magnesium cement. It may have aggregates of v... | 06/13/1989 |
| 4800003 | Production of magnesium metal from magnesium containing materials A process for the production of Mg metal from impure Mg-containing materials is disclosed. The process comprises the steps of reacting a slurry of impure Mg-containing material with a hot HCl-containing gas stream to produce an impure MgCl2 slu... | 01/24/1989 |
| 4777030 | Process for recovery of silicon from a reaction mixture A process is described for the recovery of silicon from a reaction mixture comprising silicon and an alkali metal fluoride.... | 10/11/1988 |
| 4743347 | Production of pure MgCl2 solution suitable for the production of magnesium metal from an impure magnesite ore or concentrate A process for producing a substantially pure, concentrated MgCl2 solution suitable for subsequent molten salt electrolysis to magnesium metal from an impure magnesite ore or concentrate is disclosed. The process comprises the steps of calcining... | 05/10/1988 |
| 4666688 | Method for recovery and conversion of strontium sulfate to strontium carbonate from low and medium grade celestite ores Essentially pure strontium carbonate is recovered from low to medium grade strontium sulfate containing ores by first treating the ore with a hydrochloric acid solution to remove extraneous materials including calcium, magnesium, barium, and iron. The rem... | 05/19/1987 |
| 4610722 | Process for metal recovery from steel plant dust A process is provided for hydrometallurgical processing of steel plant dusts containing cadmium, lead, zinc, and iron values, along with impurities such as chloride and fluoride salts of sodium, potassium, magnesium, etc. The first step in the process inv... | 09/09/1986 |
| 4441993 | Flotation process A process for recovering metallic values by putting the values into solution and separating undesired mineral matter from the solution using countercurrent flotation is provided. The process involves leaching metallic values from host rock, conditioning t... | 04/10/1984 |
| 4414185 | Process for calcium fluoride production from industrial waste waters A process for the preparation of calcium fluoride from industrial waste waters which comprises treatment of the waste waters with potassium hydroxide, followed by lime precipitation, neutralization with carbon dioxide and filtration to provide the calcium... | 11/08/1983 |
| 4374810 | Recovery of fluorine from pond water of wet process phosphoric acid plants and recycling of defluorinated water A process for obtaining calcium fluoride from the pond water of phosphoric acid plants and recycling the high phosphate defluorinated water to the pond is disclosed. Sufficient calcium carbonate is added to a solution having a pH of about 0.8, containing ... | 02/22/1983 |
| 4341752 | Method for purification and concentration of MgCl2 -brines Method for producing purified and concentrated MgCl2 -brine by evaporation and crystallization from brines containing MgCl2, KCl, NaCl and MgSO4 involving recirculation of carnallite and part of the final product brine. Th... | 07/27/1982 |
| 4320012 | Neutralization of phosphoric acid waste waters Method for neutralizing waste cooling pond waters of wet process phosphoric acid plants, and for neutralizing similar waste waters from phosphate complexes, wherein neutralization is performed in two stages and wherein the flocculent precipitate from the ... | 03/16/1982 |
