A system and method of curing build material powder. An amount of build material powder is placed in a container sealable with respect to a gaseous atmosphere present about the exterior of the container. The container is installed in a powder curing apparatus which includes a heating system and an agitation system. The heating system heats the build material powder to a temperature profile while the agitation system causes a portion of the build material powder in the container to be conveyed away from an interior surface of the container, and a second portion of the build material powder is conveyed toward an interior surface of the container.

A pretreatment mixing and stirring device includes a cylindrical housing having a top plate, a bottom plate arranged to oppose to the top plate, a side plate arranged between the top plate and the bottom plate, and a mixing and stirring region where a calcined gypsum and an additive are mixed and stirred in an interior surrounded by the top plate, the bottom plate, and the side plate, a disk-shaped rotating plate arranged inside the housing, a rotating drive shaft, penetrating the top or bottom plate, and coupled to the rotating plate, a calcined gypsum supply port, arranged in the top plate, and supplying the calcined gypsum to the mixing and stirring region, and an additive supply port, arranged in at least one of the top and side plates, and supplying the additive to the mixing and stirring region.

An extruder, preferably for calcining and extruding raw gypsum, including a calcination zone and a mixing zone, wherein the extruder is optionally configured to capture and/or retain water liberated in the calcination zone, apparatuses and processes employing such extruders and respective uses.

A method for forming an abrasive article via an additive manufacturing technique including forming a layer of powder material comprising a precursor bond material and abrasive particles, compacting at least a portion of the layer to form a compacted layer, binding at least a portion of the compacted layer and repeating the steps of forming, compacting and binding to form a green body abrasive article.

Embodiments relate to an insulation filling device for a fuel reformer, comprising: a feeder for supplying a powder insulation material; a stirrer for mixing the powder insulation material with a liquid binder for the agglomeration of the particles of the powder insulation material to form an insulation paste; and a thermal molding device for compressing said insulation paste to form a plurality of insulation molds having a predetermined shape and filling the insulation space of the fuel reformer with said insulation molds.

A concrete composition and method include a portion of fine aggregate bearing a coating of a polymer or an admixture, which may be a continuous coating layer or a layer of powdered, discrete particles embedded in a binder. The polymeric coating may be an admixture in powdered form, a super absorbent polymer (insoluble in water, but absorbing water), or another polymer such as the acrylamides, co-polymers thereof, polyacrylamides, or the like (soluble in water). The coating absorbs water, but particles are too small to form significant voids. Water is absorbed into the concrete mix in far greater proportions (e.g. w/c ratio over 0.5) improving workability, doubling workability time, and improving ultimate compressive stress (strength).

A concrete composition and method include a portion of fine aggregate bearing a coating of a polymer or an admixture, which may be a continuous coating layer or a layer of powdered, discrete particles embedded in a binder. The polymeric coating may be an admixture in powdered form, a super absorbent polymer (insoluble in water, but absorbing water), or another polymer such as the acrylamides, co-polymers thereof, polyacrylamides, or the like (soluble in water). The coating absorbs water, but particles are too small to form significant voids. Water is absorbed into the concrete mix in far greater proportions (e.g. w/c ratio over 0.5) improving workability, doubling workability time, and improving ultimate compressive stress (strength).

A method and system for 3D printing for creating at least two discrete sections of powder on a substrate, segmenting the substrate to isolate the at least two discrete sections of powder, compacting the powder on a segment of the substrate, removing loose/non-compacted powder from the segment of the substrate, create a printed/processed layer by performing one or more of a printing process or a processing operation on the segment of substrate, and transferring the printed/processed layers from the segment of substrate to a build platform.

A method and system for 3D printing for creating at least two discrete sections of powder on a substrate, segmenting the substrate to isolate the at least two discrete sections of powder, compacting the powder on a segment of the substrate, removing loose/non-compacted powder from the segment of the substrate, create a printed/processed layer by performing one or more of a printing process or a processing operation on the segment of substrate, and transferring the printed/processed layers from the segment of substrate to a build platform.