摘要:
An insulating ceramic made up of a plurality of partially filled shapes (e.g., 101), such as oblate spheroids, spheres, and shapes free of corners, is provided. Each partially filled shape may include an inner skeleton (e.g., 102) and an outer skin (e.g., 104). The inner skeleton may be stabilized at a higher temperature relative to the outer skin. The shapes may be disposed in a binding matrix. The thickness of the outer skin may be very thin in view of the support provided by the inner skeleton, thereby improving the abradability characteristics of the ceramic.
摘要:
The invention provides a method to transform large quantities of waste glass into useful ceramic products by a low-cost manufacturing process. The method improves green strength compared to previous methods, and does not require water or any other liquid solvent. Only one firing step is needed with a low peak firing temperature of about 700null C. to about 1000null C. The method conserves energy and natural resources compared to clay-based traditional ceramic manufacturing. High-quality impervious ceramic products can be produced by the invention.
摘要:
Residual bones, and ashes from the cremation process of deceased humans and animals are turned into solid objects containing glass, ceramics, clay based materials, or composites such as organic polymer matrix, metal matrix, or inorganic cementaceous matrix, or combination of thereof. In another embodiment, ash is mixed with at least a liquid phase such as paint or coating, which upon dying or heating the mixture becomes solid. The final solid product can be made into any shapes or forms that the matrix can be made into without the addition of the ash. The final form of the product thereof can range from abstractive non-functional to geometrical shapes or functional forms such as containers, vases, or in the form of jewelry stones. Or painting, drawing, coating, and glazing. The objects can be made to contain almost all ash, such as in the case of ceramics or partially loaded with ash as is the case for glass and composites. In one other embodiment, the cremation residue either in a solid form or powdery form can be encapsulated in glass, ceramics, and various composites to form a heterogeneous product. The finished products can be marked with identification formats such as bar codes which make them possible to be traced electronically in a data base environment.
摘要:
A method for manufacturing an artificial reef based on industrial waste is disclosed. Industrial wastes, including red mud, blast furnace slag, the sludges from the factories of refining raw ore, broken pieces of glass, the stone powders from the anti-pollution facilities equipped in stone- or aggregate-extracting spots, the slurries from the terminal treatment plants of water and sewage, the ashes from the incinerators for household wastes, the pulp sludges and slurries from paper mills, the coal ashes from thermoelectric power plants, and the side-products produced upon coal mining, are utilized, alone or in combination with a plasticizer and a mineralizer, in constructing artificial fishing reeves through pug-milling, molding and thermal treatment processes. The artificial fishing reef, through which the industrial wastes are converted into environment-affinitive resources, have advantages of being economically favorable and producing no pollution of the environment.
摘要:
A method of making a product which is generally impervious to water including the steps of making a generally homogenous mixture of slate particles and clay, setting the mixture as necessary to produce a formable composition, forming the wet mixture to a desired configuration, at least partially drying the formed mixture and subjecting the dried formed mixture to a temperature of at least 1145° C. for a time sufficient for at least some of the clay to convert into a binder to bind together the slate particles.
摘要:
A ceramic composition made from waste materials and a method for manufacturing the same are disclosed. The ceramic composition comprises between 5 and 75 by weight part of a solid stated waste material including heavy metals, between 15 and 45 by weight part of a fly ash and between 5 and 55 by weight part of a clay. The ceramic composition is manufactured by compositely stabilizing various waste materials and is available for a building material or an engineering material. Therefore, the waste materials are effectively recycled without causing environmental pollution.
摘要:
A red brick comprising waste foundry sand of 30.about.50 wt %, dusts of 5.about.10 wt %, and a remainder of clay. The waste foundry sand and dusts can be efficiently recycled, and the quantity of the sand used, the supply of which sand which is nearly exhausted, can be reduced. The heating temperature in the red brick manufacturing process is remarkably lowered, and the economical efficiency of the manufacturing process is improved greatly by using iron oxide included in dusts, instead of a chemical compound to obtain desired color.
摘要:
The present invention relates to a process of forming ceramic tiles having the appearance of tiles produced from clays. The process includes melting a material to form a glass melt, treating the glass melt to produce a solid glass product, grinding the solid glass product to produce glass particles having a particle size of less than 200 microns, mixing the glass particles with a first additive to form a glass powder mixture having a composition of 55 to 99 wt. % glass particles and 45-1 wt. % first additive, forming the glass powder mixture into tiles by dry pressing, where the tiles have a primary crystalline phase selected from the group consisting of nepheline, diopside, anorthite, wollastonite, melilite, merwinite, spinel, akermanite, gehlenite, crystalline phases based on iron substitutions in the crystalline phase, and mixtures thereof. The process includes a devitrifying step where the solid glass product is devitrified prior to the grinding step or the glass particles in the tile are devitrified after the forming step.
摘要:
A method of treating spent potliner material from aluminum reduction cells is disclosed. The spent potliner material is introduced into a sulfuric acid digester to produce a gas component including hydrogen fluoride and hydrogen cyanide and a slurry component including carbon, silica, alumina, sodium sulfate, iron, calcium and magnesium. The gas component is recovered and heated an effective amount to eliminate hydrogen cyanide and produce a remaining gas component including CO.sub.2, H.sub.2 O, nitrogen oxides and HF. The remaining gas component is directed through a water scrubber to form hydrofluoric acid, and the hydrofluoric acid is admixed with aluminum hydroxide to create aluminum fluoride. The slurry component is rinsed with water to separate a first solid fraction containing carbon, alumina and silica from a second liquid faction. The pH of the liquid fraction is adjusted to first create and separate aluminum hydroxide and then to separate sodium sulfate. Finally, the solid fraction is admixed with an alumina/silica mix and then subjected to an elevated temperature in an oxygen-rich atmosphere to oxidize the carbon and vitrify the alumina and silica into refractory material.