A method for producing a honeycomb structure using, as a part of a starting material, a recycled raw material recycled from a recovered material which is produced in the production process of the honeycomb structure and originates from the starting material for the honeycomb structure, and further provides the honeycomb structure. The recycled raw material is ground so that it has an average particle diameter of 10 2000 .mu.m and contains 10% or less by weight of particles having an average part...

Recycled ceramic slurry is produced by a method including the steps: dissolving the waste material of unfired ceramic in a solvent to form a waste solution; and adjusting a composition of the waste solution to thereby produce the recycled ceramic slurry. If the waste material of unfired ceramic includes a metal component, the metal component may be removed therefrom before the step of adjusting the composition of the waste solution.

A process for strengthening carbide fibers by removing internal stresses caused by their formation. This process is accomplished by drawing the carbide fiber under tension through a furnace. The temperature of the furnace may range from about 2050.degree. to 2300.degree.C while the fiber tensile stress may vary from about 200 to 3500 p.s.i. when using boron carbide fibers with diameters ranging from about 8 to 14 microns.

Process for producing continuous alumina multifilament yarns which comprises preparing an aqueous spinning mix containing selected alumina particles and water-soluble precursors of alumina in selected amounts, spinning filaments from the mix, forming a continuous filament package on a collapsible, refractory bobbin at a windup speed which attenuates the filaments, firing the package in a furnace at selected temperatures in either one or two steps, and then firing the yarn while backwinding it. A...

A viscous solution or dispersion of soluble or dispersed metal compounds is extruded from a spinnerette, the resulting continuous green fibers are drawn in air (preferably as a strand) and allowed to continuously accumulate or collect in a free-form, relaxed manner in the configuration of offset or superimposed loops on a moving belt which is continuously passed through a furnace to remove volatiles and burn off organic material, and the resulting continuous refractory fibers are continuously pu...

A process for preparing continuous aluminum salt filaments convertible to transparent alumina filaments wherein an aqueous fiber-forming solution of hydrated monochloro aluminum hydroxide is concentrated to 1,500-3,000 centipoises and formed into filaments by extrusion directly into a coagulating bath comprising a liquid selected from the group consisting of isopropyl alcohol, ethyl alcohol, tertiary butyl alcohol, a mixture of ethyl alcohol and acetone and a mixture of isopropyl alcohol and ace...

A process for the manufacture of an aluminum oxide or zirconium oxide fiber comprising fiberizing a liquid containing lactic acid and an oxidizable compound selected from basic aluminum chloride, zirconium acetate and zirconium oxychloride and the resulting fibers. The liquid optionally also contains colloidal silica.

A method of manufacturing hollow ceramics fibers with the pores of the micron-scale hollow structure unidirectionally oriented, the method of manufacturing is characterized in the steps of dispersing organic fibers in a dielectric liquid and applying high voltage to the dielectric liquid containing the dispersed organic fibers to electrostatically align them to produce a fiber accumulation in which the organic fibers are unidirectionally oriented, using the fiber accumulation as a mold and dippi...

A step pivoted to the body of a pickup truck subjacent its door. The step is carried on a rod rotatably-mounted in a pivot sleeve. The rod has an arm connected by a cable to the door and by a spring to the truck body opposite the cable, to normally rotate the step to a retracted position beneath the truck body. Opening the door pulls the step to operative position.

Transparent, smooth, fracture resistant, discreet, refractory oxide fibers of homogeneous chemical composition comprising 96 to 100 weight percent of a mixture or chemical combination of 67 to 77 parts by weight alumina and 23 to 33 parts by weight silica, said fibers having a predominant polycrystalline phase of mullite, transitional alumina, or a mixture of both, said refractory fibers being made by fiberizing a viscous liquid of oxide precursors comprising a silica sol and a water dispersible...