Abstract:
In a process for manufacturing foamed material, particles of a plant material as an organic expansion agent, particles of an inorganic base material and water are blended together. The blend is heated and pressurized to homogenize and liquefy or plasticize it. The blend is then extruded through a die where, in the course of the extrusion, superheated water in the blend vaporizes to foam the blend, the extrudate then being cooled and fired.
Abstract:
An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.
Abstract:
The present invention provides a method capable of inexpensively obtaining a novel complex compound excellent in heat resistance, light-weight property, flame resistance, chemical resistance, and electroconductivity, and of converting a chemically harmful or morphologically hazardous substance into a detoxified/safened substance by a safe operation. Further, it is possible to simultaneously obtain a structural body where the detoxified/safened inorganic compounds have surfaces coated with the complex compound, so that application of the above method to a treatment of wastes allows for contribution to resource recycling.The present invention also resides in: a carbon/aluminum complex compound produced by distillingly removing a water content from an aqueous dispersion containing a polyaluminum chloride and a water-soluble organic substance, and firing the remainder at a temperature of 300° C. or higher; a carbon/aluminum complex compound-coated inorganic compound structural body produced by impregnating a water solution containing a polyaluminum chloride and a water-soluble organic substance, through inorganic compound particles, and by firing the impregnated matter; and a treating method of waste, comprising the steps of peeling off a waste containing needle-like inorganic compounds while spraying a water solution of polyaluminum chloride onto and through the waste, infiltrating a water-soluble organic substance into the sprayedly peeled matter, and subsequently firing the resultant matter.
Abstract:
A process for making open-celled silicon carbide inserts (20) that allow metal infiltration to create metal-matrix composite part (100, 300) used for rubbing/wear components, such as an open-celled ceramic ring. The open-celled ceramic insert (20) is infiltrated by cast iron, and produces no negative effects to the iron casting process or the final metal-matrix composite product (100, 300) such as casting porosity or gas build-up inside the mold. Inserts (20) constructed in accordance with the invention enable manipulation and control over the density and weight of final metal-matrix composite products (100, 300). It is an advantageous characteristic of such inserts (20) that they enable manipulation and control over the dampening characteristics of final metal-matrix composite products (100, 300).
Abstract:
Methods of making sintered ceramic particles include preparing an aqueous slurry containing an alumina-containing raw material and a binder containing a raw plant material, forming the slurry into green pellets, and sintering the green pellets to provide the sintered ceramic particles.
Abstract:
An extrusion method and apparatus are described for producing ceramics, glass, glass-ceramics, or composites suitable for use as proppants. The method includes forming one or more green body materials, extruding the green body materials to form a green body extrudate, separating and shaping the green body extrudate into individual green bodies, and sintering the green bodies to form proppants. The apparatus includes a means for forming an intimate mixture of green body materials, means to produce a green body extrudate, means for separating and shaping the green body extrudate into individual green bodies, and means to sinter the green green bodies to form proppants.
Abstract:
A road paving material includes an aggregate, asphalt, and fine ceramic particles selected from the group consisting of RBC particles, CRBC particles, and mixtures thereof.
Abstract:
A carbonaceous material, also referred to as a carbon alloy, and a process of making the carbonaceous material is provided. A particulate of partially pyrolyzed carbon (PPC) base is formed on heating a carbon-containing feed material and a nucleating agent in the form of a interactive filler is included. The nucleating agent is adhered together to the PPC particles by application of heat. The material is molded into a shape, voids in the material are collapsed and the resulting carbon alloy is cooled
Abstract:
There is provided a deodorizing and absorbing material comprising RB ceramics and/or CRB ceramics as an odor absorbing material, which has excellent deodorizing properties and long term persistency thereof and is easily fabricated into a complicated shape when the material is used as a molded product.
Abstract:
A ceramic material suitable for use in production of paving tiles, construction tiles, flooring in offices, flooring in machinery plants and so forth is obtained by a method comprising steps of mixing defatted bran derived from rice bran with a thermosetting resin before kneading, subjecting a kneaded mixture thus obtained to a primary firing in an inert gas at a temperature in a range of 700 to 1000null C., pulverizing the kneaded mixture after the primary firing into carbonized powders, kneading the carbonized powders with which ceramic powders, a solvent, and a binder as desired are mixed into a plastic workpiece (kneaded mass), pressure-forming the plastic workpiece at pressure in a range of 10 to 100 MPa, and subjecting a formed plastic workpiece thus obtained again to firing in an inert gas atmosphere at a temperature in a range of 100 to 1400null C.