Abstract: Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.

Abstract: Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.

Abstract: Provided herein is a negative active material including an ordered porous manganese oxide, wherein pores of the ordered porous manganese oxide have a bimodal size distribution. Provided herein is a method of preparing a negative active material that includes the ordered porous manganese oxide. The invention also includes a negative electrode which includes the negative active material and a lithium battery which includes the negative electrode.

Abstract: A precursor powder for sintered ore, which offers excellent sintered ore production efficiency, can be adjusted independently of the quality of iron ore, by setting a mixing ratio [(C/F)×100] of a mass (C) of particles having a particle size of 3 mm or more in coke breeze to a mass (F) of particles having a particle size of 3 mm or more in an iron ore raw material in the range of 2% to 3%.

Abstract: In a method for producing pressed articles containing coal particles, before being mixed with a binder system containing water, at least a subset of the coal particles is subjected to at least two impregnation steps in which it is impregnated with at least one substance. The pressed articles may be used, for example, in methods of pig iron production in a packed bed or in methods for producing carbon carriers for methods of pig iron production in a packed bed.

Abstract: A process for producing agglomerates from fine-grained iron carriers and at least one binder as a charge material for a metallurgical process is shown. In at least one further agglomeration step, the agglomerates are coated with a layer, comprising iron carriers and at least one binder, and heated in such a way that the binder is cured in the region of the surface of the agglomerates. In a process for producing liquid pig iron or liquid primary steel products from charge materials and possibly additions and agglomerates, the agglomerates are preheated in a reducing zone, which has a preheating stage, in such a way that the agglomerates completely harden in the preheating stage.

Abstract: Agglomerates with a carbonaceous material incorporated therein and a process for producing reduced metal using the agglomerates are provided. The agglomerates are prepared with high-VM coal, which is widely and abundantly produced and is less expensive, and they provide high strength after reduction without the need for finer metal oxide particles. The agglomerates are made of a carbonaceous material and a raw material to be reduced that contains a metal oxide, such as iron ore. The carbonaceous material used is a high-VM coal containing 35% or more by mass of volatile matter. The agglomerates are formed at a pressure of at least 2 t/cm2 so that the porosity thereof is reduced to 35% or less. The reduction in porosity is effective in promoting heat transfer inside the agglomerates in a rotary hearth furnace in a high-temperature reduction step so that the sintering of reduced metal proceeds efficiently in the overall regions of the agglomerates to produce a reduced metal having high crushing strength.

Abstract: This invention belongs to ferrous metallurgy field, and in particular relates to a lime-based additive for steel smelting which is used in the electric furnace refining and steel casting process for carbureting and deoxidation and the preparation method thereof. The lime-based additive for steel smelting comprises lime-based material and carbonaceous material, wherein the content of the lime-based material is 40-80 wt % relative to the total amount of the additive, and the remaining is the carbonaceous material; the lime-based material is a passivated CaO powder with a low flowability, or the mixture of the passivated CaO powder and CaCO3 powder, and the carbonaceous material is at least one of the coke, graphite, semi-coke powder and coal with carbon content not less than 85 wt %. When the additive has a shape of pellet, and it further comprises 1-5 wt % of agglomerant which has a microstructure of strip, streak or dendritic, and is at least one of MgO, Al2O3, and CaCO3.

Abstract: A raw material for sintering of 100% in total is blended so as to adjust iron-containing dust and/or sludge to 60% or more, and coarse grains having a grain size of 2 mm or larger to 20% or more on the weight basis, one-third or less of the total amount of addition of coke breeze is added as a fuel, the blend is kneaded and granulated using a vibration kneading granulator to thereby produce granulated grains, the residual portion of the total amount of addition of coke breeze is added to the granulated grains, the blend is subjected to exterior coating granulation using a rolling type granulator, thus-granulated raw material for sintering is screened, and a fraction having a grain size of 1 mm or larger is used for sintering, making it possible to sinter microparticulate dust and microparticulate sludge as main raw materials, which have conventionally been used only to a limited amount of use.

Abstract: A method for producing an iron oxide pellet including the steps of adding water to a raw material mixture comprising iron oxide which serves as a primary component, a carbonaceous material in an amount sufficient for reducing the iron oxide, an organic binder in an amount sufficient for binding the iron oxide and the carbonaceous material, and an inorganic coagulant in an amount of not less than 0.05 mass % and less than 1 mass %; pelletizing the resultant mixture to thereby obtain a green pellet; and drying the green pellet until the moisture content is reduced to equal to or less than 1.0 mass %. The thus-produced iron oxide pellet is charged in a reducing furnace for reduction to thereby obtain a reduced iron pellet.

Abstract: A method for the recovery of high purity zinc oxide products, and optionally iron-carbon feedstocks, from industrial waste streams containing zinc oxide and/or iron. The waste streams preliminary can be treated by adding carbon and an ammonium chloride solution, separating any undissolved components from the solution, displacing undesired metal ions from the solution using zinc metal, treating the solution to remove therefrom zinc compounds, and further treating the zinc compounds and the undissolved components, as necessary, resulting in the zinc products and the optional iron-carbon feedbacks. Once the zinc oxide has been recovered, the purification process is used to further purify the zinc oxide to obtain zinc oxide which is at least 99.8% pure and which has predeterminable purity and particle characteristics. Various zinc compounds may then be quickly, easily, and economically produced from this recovered zinc oxide.

Abstract: A method of processing flue dust, where the flue dust contains one or more compounds from a first group of zinc, lead and cadmium compounds, and contains one or more compounds from a second group of iron, silicon, calcium, magnesium and aluminum compounds, includes mixing the flue dust with a carbonaceous material, heating the flue dust/carbonaceous material mixture under non-turbulent conditions to cause a substantial portion of the compounds from the first group to become gas-borne while retaining a substantial portion of the compounds of the second group in a non-gas-borne condition, and separating the gas-borne compounds from the non-gas-borne compounds.

Abstract: Pellets incorporated with a carbonaceous material of the present invention contain a carbonaceous material and iron ore mainly composed of iron oxide. The maximum fluidity of the carbonaceous material in softening and melting, and the ratio of iron oxide particles of 10 &mgr;m or smaller in the iron ore are within the range above a line which connects in turn points A, B and C shown in FIG. 1, including the line. This permits the production of pellets incorporated with a carbonaceous material having excellent thermal conductivity and high strength. Reduction of the pellets incorporated with a carbonaceous material produces reduced iron having high strength after reduction and a low fines ratio with improved productivity.

Abstract: A method for producing the direct reduced iron pellets. The method includes pelletizing, iron oxide-containing material, internal reductant and binder to form green pellets. The binder includes a non-combustible fibrous material. The method also includes firing the green pellets to convert the green pellets into direct reduced iron pellets.

Abstract: In a method of producing molten pig iron (13) or molten steel pre-products from charging substances formed of iron ore (4), preferably in the shape of lumps and/or pellets, and optionally of fluxes (5), the charging substances are directly reduced to sponge iron in a reduction zone (2), the sponge iron is charged into a melt-down gasifying zone (12) and, there, is melted under the supply of carbon carriers (10) and an oxygen-containing gas, wherein a CO—H2-containing reducing gas is generated that is withdrawn from the melt-down gasifying zone (12) and introduced into the reduction zone (2), is reacted there and is withdrawn as a topgas, wherein the topgas is subjected to scrubbing and the sludges thus separated are at least partially agglomerated. To utilize the agglomerates thus formed while expending as little energy as possible, the agglomerates are recirculated into the reduction zone (2).

Abstract: Certain physical properties, chemical composition and a content of volatile carbonaceous materials define the limits of the use of coke by-products of crude oil refining as green cokes for use in the manufacture of calcined cokes suitable in the production of anodes for the reduction processes in the aluminum industry. These limits render large quantities of green coke unusable for the purpose set forth above. The invention shows a way to overcome these limits by rendering up to now unusable cokes usable as green cokes for the manufacture of calcined cokes for the production of anodes.

Abstract: The beneficiation of an electric arc furnace (EAF) dust waste stream comprising zinc compounds by collecting and combining dust from two or more EAF batches with coal fines to form briquettes, adding the briquettes to a final EAF batch with the charge, and collecting the dust from the final EAF batch, so that the zinc in the beneficiated dust is of a greater proportion than in a typical batch of EAF dust. Alternatively, the EAF dust can be split into two dust streams, one of which is returned to the EAF, while the other is treated in a hydrometallurgical process. Either waste stream preliminary can be treated by adding carbon and an ammonium chloride solution, separating any undissolved components from the solution, displacing undesired metal ions from the solution using zinc metal, treating the solution to remove therefrom zinc compounds, and further treating the zinc compounds and the undissolved components resulting in zinc products and an optional iron-carbon feedback.

Abstract: Composite pieces of high density and strength are made continuously from mixtures of fine particles of bituminous or subbituminous or lignite coals and particles of carbon reducible oxides. The particles are mixed with water, compressed to squeeze out some of the water to obtain single bodies which are heat processed lying on a traveling grate on which the composites undergo drying, pyrolyzing, carbonizing and cooling.A modification includes mixing in with the coal material(s) listed above, coke fines or char or anthracite coal. The carbon reducible oxides utilized are such as the oxidic ores of Fe, Mn, Cr and quartzite in recited important proportions that make the formed composite bodies usable in a submerged arc furnace or in a low shaft blast furnace or in an open hearth to produce desired intermediate or end metallic products such as ferromanganese, Fe-Cr base metal for stainless steel, iron, ferro-alloys or silicon.

Abstract: A process for agglomerating by extrusion, metallurgical by-products and waste products having small particle size, is described. A blend of metallurgical by-products, some of which contain silicates previously treated at high temperatures and thereby being capable of chemically and structurally binding water, optionally mixed with portland cement and/or slag cement, and containing water which has been added in amounts that the silicates and cement present can completely absorb and react with, is further mixed with a hydrocarbonaceous substance. The resulting mixture is subsequently agglomerated by extrusion. The extrudates obtained are shape retaining and sufficiently hard to be handled without breaking, crumbling or dusting, and may be charged to extractive pyrometallurgical installations for recovering value metals contained in the metallurgical by-products and waste products. The extrudates may also be stored without dusting and loss of hardness.

Abstract: Fuel briquettes are made by blending a caking coal with pitch at a temperature above 100.degree. C. but below 200.degree. C. to form a pitch/coal alloy binder which is then hot-blended with any caking coke, especially petroleum coke and optionally finely-divided limestone. The pressed briquettes are then subjected to hardening heat treatment and are found to be resistent to mechanical deterioration on long-term storage.

Abstract: A method for manufacturing agglomerates of sintered pellets includes the steps of blending, mixing and pelletizing flux and coarse grain coke with fine iron ore, coating green pellets obtained in the step of the mixing and pelletizing with powdery coke, and sintering the green pellets coated with the powdery coke. The coarse grain coke has a particle size of 1 to 7 mm. 1 to 50 parts of the coarse grain coke, by weight, are added to 100 parts of the total amount of the fine iron ore and the flux by weight.