Abstract: Composition in the form of green or thermally treated briquettes comprising at least one “quick” calcium-magnesium compound and an iron-based compound, the method of production thereof and uses thereof.

Abstract: Methods, systems, and apparatus, including computer program products, for implementing a software architecture design for a software application implementing expense reimbursement. The application is structured as multiple process components interacting with each other through service interfaces, and multiple service operations, each being implemented for a respective process component. The process components include an Expense and Reimbursement Management process component, a Due Item Processing process component, a Payment Processing process component, a Payroll Processing process component, and an Accounting process component.

Abstract: Provided is a process for producing sintered ore in which a small amount of a water-soluble compound (a sintering aid) is added to iron ore powder and, thereby, which product shows improved strength and no adverse influence as an ironmaking raw material either without any increase in content of an auxiliary material (CaO) serving as a binder. In production of sintered ore, an aqueous solution is added to iron ore powder and an auxiliary material, the iron ore powder and the auxiliary material are kneaded to form a mixture, and the mixture is granulated to form granules, wherein the aqueous solution contains a water-soluble compound reacting with the iron ore powder to form a reaction product having a melting point of 1200° C. or lower.

Abstract: Metal baghouse dust can be solidified and thereby used for a variety of different purposes including a binder material by blending the electric arc furnace dust with a reducing agent such as ferrous chloride or ferrous sulphate. This forms a solidified mass which has excellent hardness and high temperature strength enabling it to be directly added to molten metal. Particles coated with hardened metal baghouse dust can be used in the Midrix process or can be used to add carbon to molten metal. This is an excellent way to dispose of waste metal baghouse dust.

Abstract: The present invention is directed to a process of making fired mineral pellets by mixing particulate mineral material with moisture and binder comprising substantially water soluble organic polymer to form a moist pelletizable mix, pelletizing the moist mix by a tumbling process to form green pellets and firing the green pellets, characterized in that the binder comprises alkali metal silicate in a dry weight amount which is either (a) above 0.13% based on moist mix or (b) above 0.08% based on moist mix and at least three times the dry weight of substantially water soluble organic polymer.

Abstract: A process for producing fired pellets by granulating finely-ground iron ore and subjecting the resulting granules sequentially to drying, dehydration, preheating, and firing, wherein said process comprises adding an additive to said finely-ground iron ore at the time of granulation, said additive reacting with iron ore to form a compound which has a melting point lower than the preheating temperature. Owing to the additive (or sintering auxiliary) added in a small amount to iron ore powder, it is possible to produce preheated pellets by using the existing grate kiln without increasing the amount of preheating energy. The resulting preheated pellets have improved strength and produce no adverse effect on finished pellets.

Abstract: A method of recovering steel plant waste revert materials including blast furnace flue dust and sludges involves mixing the revert materials with water to provide a total moisture content of about 14-20% by weight, then adding Portland cement as a sole binder, mixing, and, when the water content is limited to about 18 to 20%, casting the mixture onto the ground in the form of a slab or, when the water content is limited to about 14 to 16% and an accelerator for curing the cement is used, casting the mixture onto a conveyor in the form of preformed streams, curing the cast mixture and breaking it up to provide 1/2 inch to 5 inch agglomerate particles that can be recycled to the blast furnace.

Abstract: A method for abating the incidence of cluster formation of reducible iron-containing material during the direct reduction of said material is disclosed. The method generally comprises contacting the reducible iron-containing material with a cluster-abating effective amount of either a dispersion which comprises at least one particulate material which is substantially nonhardening in the presence of water and at least one fluxing agent or a dispersion which comprises an aluminum-containing clay.

Abstract: An agent for desulfurization, dephosphorization, desiliconizing, and denitriding of ironmelt and melt containing chromium or manganese, consisting of at least one of the following mineral raw-material: alkali-containing plagioclase (feldspar), alkali-containing orthoclase, montmorillonite (perlite), bentonite, muscovite, or zeolithe, and calcium carbide and/or calcium oxide.These mixtures can be blended further with scale, Fe-ores, Cr-ores or Mn-ores and used by standard technologies. The mineralic components, in connection with calcium carbide, lime, iron-ore or scale or other related ores, cause an effective reduction of unwanted elements, such as sulfur, phosphorus, silicium, and nitrogen, in the metal melts.The slags produced are freely skimmed and contain less iron granules than standard agents. Some of these materials may be enriched with alkali oxides by sintering or melting with appropriate compounds, like soda ash.

Abstract: Steel mill by-product material briquettes or pellets and processes for making the same that results in a briquetted or cold agglomeration pelleted material made from by-product material and a binder comprising gypsum-free cement and sucrose residue for the briquettes or a binder comprising gypsum-free cement and, if required, a sucrose residue for the pellets. These briquettes or pellets are made using a cold roll briquetting process or a cold agglomeration pelletizing process at ambient temperature and can be fed directly into a blast furnace thereby recycling by-product materials while completely by-passing the environmentally adverse and costly sintering process or landfill disposal process.