| Patent Number |
Title Of Patent |
Date Issued |
| 5362440 |
Ferrophosphorus refining process |
November 8, 1994 |
| The ferrophosphorus refining method entails forming a ferrophosphorus melt and adding an oxidizing agent to the melt to oxidize the impurities in the melt. The oxidized impurities then rise to the top of the melt and either go into the slag or escape in a gaseous forte. The slag is remov |
| 5149364 |
Desulfurization agent |
September 22, 1992 |
| The desulfurization agent for molten iron is made up of 70 to 95% commercial calcium carbide, 5 to 25% silicon dioxide, 0 to 10% of a metal oxide, and 0 to 5% calcium fluoride. The metal oxides are iron oxides and manganese oxides. The desulfurizing agent has been found to reduce the |
| 5078784 |
Desulfurization agent |
January 7, 1992 |
| The desulfurization agent for molten iron is made up of 70 to 95% commercial calcium carbide, 5 to 25% silicon dioxide, 0 to 10% of a metal oxide; and 0 to 5% calcium fluoride. The metal oxides are iron oxides and manganese oxides. The desulfurizing agent has been found to reduce the |
| 5061672 |
Active mass for making organohalosilanes |
October 29, 1991 |
| The active mass is produced by first forming a contact mass of particulate silicon metal and particulate copper catalyst and then heating the contact mass at a temperature of between 250.degree.-335.degree. C. in the presence of methylchloride to form the active mass. Zinc can be added t |
| 4941914 |
Desulfurization agent |
July 17, 1990 |
| The desulfurization agent for molten iron is made up of 95 to 70% commercial calcium carbide, 30 to 5% calcium aluminate slag, and 10 to 0% of a metal oxide. The calcium aluminate slag is made up of 65 to 50% calcium oxide, 35 to 25% aluminum oxide, and 12 to 3% calcium fluoride. The |
| 4816230 |
System for recycling fines to hollow electrode |
March 28, 1989 |
| The present invention is directed to process and apparatus for mixing finely divided calcium carbide and finely divided lime and carbonaceous material and for feeding the mixture down through the aperture of a hollow electrode in a calcium carbide electric furnace. In a preferred embodim |
| 4799955 |
Soft composite metal powder and method to produce same |
January 24, 1989 |
| Disclosed is a composite metal powder made from a base iron powder milled with an alloying component such as nickel, copper, managnese, chromium, silicon, phosphorus, boron, vanadium, and molybdenum, where the composite metal powder has a compressibility comparable to the compressibility |
| 4752327 |
Dephosphorization process for manganese alloys |
June 21, 1988 |
| A method for dephosphorizing a manganese alloy by first desiliconizing the alloy to a level below 0.6%, and then dephosphorizing the low silicon alloy with barium carbonate or barium oxide in combination with an oxidizing agent. The lower the silicon content the better the results. |
| 4749549 |
Gray cast iron inoculant |
June 7, 1988 |
| A ferrosilicon inoculant for gray cast iron containing between 0.1 to 10% strontium, less than 0.35% calcium and either 0.1 to 15% zirconium, 0.1 to 20% titanium or a mixture of both zirconium and titanium with the strontium. The inoculant, method for producing the inoculant, method for |
| 4684403 |
Dephosphorization process for manganese-containing alloys |
August 4, 1987 |
| A method for dephosphorizing a manganese containing melt is disclosed. The method encompasses the addition of a magnesium compound to a manganese containing melt to form magnesium phosphides which are removed from the melt. The method is carried out under pressure and the addition of a f |
| 4676970 |
Method for producing metal sulfide and the product produced therefrom |
June 30, 1987 |
| A method for making a fused compound from a metal and a non-metal and more particularly a method for making a metal sulfide is disclosed. The method is particularly advantageous in making manganese sulfide. An excess of metal and recycled compound are used to control sulfur vaporization |
| 4666516 |
Gray cast iron inoculant |
May 19, 1987 |
| A ferrosilicon inoculant for gray cast iron containing between 0.1 to 10% strontium, less than 0.35% calcium and either 0.1 to 15% zirconium, 0.1 to 20% titanium or a mixture of both zirconium and titanium with the strontium. The inoculant, method for producing the inoculant, method for |
| 4592538 |
Apparatus for producing predominately iron alloy containing magnesium |
June 3, 1986 |
| Apparatus and process are described for producing predominately iron alloys that contain magnesium which alloys have particular utility for treating cast iron to form ductile and compacted graphite irons.The alloys are produced under pressure of an inert gas maintained above the vapor pr |
| 4545817 |
Alloy useful for producing ductile and compacted graphite cast irons |
October 8, 1985 |
| The present invention is directed to an alloy composition and the method of treating molten cast iron with such alloy to produce ductile and compacted graphite cast irons. The alloy may contain about 0.1% to about 10% silicon, about 0.05 to about 2.0% cerium and/or other rare earth eleme |
| 4519838 |
Apparatus and process for producing predominately iron alloy containing magnesium |
May 28, 1985 |
| Apparatus and process are described for producing predominately iron alloys that contain magnesium which alloys have particular utility for treating cast iron to form ductile and compacted graphite irons.The alloys are produced under pressure of an inert gas maintained above the vapor pr |
| 4509717 |
Slide gate valve for dry bulk discharging containers |
April 9, 1985 |
| A slide gate valve assembly is provided wherein resilient means exert positive pressure to force a solid slide gate against the periphery of an aperture to establish a tight seal for retaining dry bulk particulate material in a container. Cam means are provided in the assembly to release |
| 4491568 |
System for recycling fines to hollow electrode |
January 1, 1985 |
| The present invention is directed to process and apparatus for mixing finely divided calcium carbide and finely divided lime and carbonaceous material and for feeding the mixture down through the aperture of a hollow electrode in a calcium carbide electric furnace. In a preferred embodim |
| 4480064 |
Color pigment for use in the production of thermoplastic articles |
October 30, 1984 |
| Manganomanganic oxide fume or a material containing manganomanganic oxide fume as its principle ingredient is used as a color pigment in the production of thermoplastic articles and particularly thermoplastic films. |
| 4472197 |
Alloy and process for producing ductile and compacted graphite cast irons |
September 18, 1984 |
| The present invention is directed to an alloy composition and the method of treating molten cast iron with such alloy to produce ductile and compacted graphite cast irons. The alloy may contain about 0.1% to about 10% silicon, about 0.05 to about 2.0% cerium and/or other rare earth eleme |
| 4459154 |
Alloy and process for producing and casting ductile and compacted graphite cast irons |
July 10, 1984 |
| This invention relates to a new and unique alloy composition and to the method of treating molten cast iron with such alloy to produce ductile and compacted graphite cast irons. The alloy is a predominately iron alloy having the essential elements by weight of from about 0.1 to about 10% |
| 4420340 |
Color retention pigment for paint compositions using latex vehicles |
December 13, 1983 |
| Manganomanganic oxide or a material containing manganomanganic oxide as its principle ingredient is used as a colorant with good staining and retention properties in compositions of water emulsion based coatings. |
| 4417008 |
Improved color pigment for solvent-base paint formulations |
November 22, 1983 |
| Manganomanganic oxide fume or a material containing manganomanganic oxide fume as its principle ingredient is used as a color pigment in the formulation of solvent-base paints. |
| 4417007 |
Zinc rich paint formulations employing manganomanganic oxide fume pigment |
November 22, 1983 |
| Paint formulations employing zinc and manganomanganic oxide fume or a material containing predominantly manganomanganic oxide fume as a corrosion inhibitive system. |
| 4396428 |
Processes for producing and casting ductile and compacted graphite cast irons |
August 2, 1983 |
| The present invention is directed to processes and apparatus for carrying out said processes wherein molten cast iron is treated with a predominantly iron alloy having the essential elements by weight of from about 0.1 to about 10.0% silicon and about 0.5 to about 4.0% magnesium. The |
| 4395285 |
Low density compacts of prepared mix for use in the production of silicon and ferrosilicon |
July 26, 1983 |
| A low density, porous compact of prepared mix containing silica fume, finely-divided carbonaceous reducing agent such as petroleum coke or coal, optionally iron and a binder. |
