234results about "Ceramic article drying" patented technology

A drying jig circulating apparatus includes a drying jig assembling apparatus for assembling a drying jig on a movable table, a drying apparatus for drying a ceramic molded body held by the drying jig, and a drying jig disassembling apparatus for disassembling the drying jig on a movable table, and a drying jig circulating conveyor for transporting the drying jig from the disassembling apparatus to the assembling apparatus. The drying jig is configured by two or more separate jigs with a fixing member that integrates the separate jigs, or formed by one openable jig with a fixing member for maintaining a closed state. The drying jig assembling apparatus further includes a molded body mounting mechanism, a ceramic molded body holding mechanism, and a jig delivering mechanism. The drying jig disassembling apparatus further includes a jig receiving mechanism, a jig releasing mechanism, and a molded body taking-out mechanism.

A method for manufacturing a honeycomb structured body including molding ceramic raw material to form a pillar-shaped honeycomb molded body having a multiplicity of cells disposed in parallel with one another in the longitudinal direction with a cell wall therebetween, and filling in either one of the end portions of each of the cells with a plug material paste, and firing the honeycomb molded body to manufacture a honeycomb structured body comprising a honeycomb fired body, wherein after having filled in either one of the end portions of each of the cells of the honeycomb molded body with the plug material paste, a plug material paste drying process to dry the plug material paste is conducted by blowing hot air to an end face of the honeycomb molded body using a hot air drying apparatus.

A method for drying a ceramic article comprises providing microwave radiation from a microwave generating source, providing a ceramic honeycomb structure having a middle portion and at least one end, and exposing the ceramic honeycomb structure to the microwave radiation while shielding the at least one end from directly receiving the microwave radiation, such that the radiation absorbed by the middle portion is equal to or greater than the radiation absorbed by the at least one end, and the proper drying of the entire honeycomb structure without heat-induced structural degradation is thus ensured.

A method for drying a plurality of objects in a same space using a microwave, a method of uniformly drying all the objects to be dried while retaining the high productivity (mass productivity) as much as possible is provided. The method comprises laying a plurality of objects to be dried apart from each other by keeping, as a shortest distance between at least one pair of adjacent objects among them a distance equivalent to ¾ or more of the wavelength of the microwave to be used and irradiating them with the microwave.

A carbon black monolith comprising a matrix comprising ceramic material and carbon black dispersed throughout the matrix and a method for making a carbon black monolith comprising extruding an extrudable mixture including a carbon black, a ceramic forming material, water, an extrusion aid, and a flux material. A carbon black monolith catalyst comprising a finished self-supporting carbon black monolith having at least one passage therethrough, and comprising a supporting matrix and carbon black dispersed throughout the supporting matrix and at least one catalyst precursor on the finished self-supporting carbon black monolith. A method for making and a method for use of such a carbon black monolith catalyst in catalytic chemical reactions are also disclosed.

Methods and apparatus for drying ceramic green bodies include providing one or more ceramic green bodies in a microwave heating chamber operatively connected to a microwave source and a PLC. The total mass of the ceramic green bodies present in the microwave heating chamber is determined. Microwave energy is generated with the microwave source and transmitted from the microwave source to the microwave heating chamber. A transmitted power of the microwave energy transmitted from the microwave source to the microwave heating chamber is measured with power sensors. The reflected power of reflected microwave energy reflected back from the microwave heating chamber is also measured. The power of the microwave energy transmitted from the microwave source to the microwave heating chamber is adjusted based on the total mass of ceramic green bodies present in the microwave heating chamber, the measured transmitted power and the measured reflected power.

A method and a device for rapidly drying ware shell, and a ware shell, are provided, in the field of precision casting technology. Conventionally, the ware shell drying process fails to ensure high quality of a ware shell and rapid drying simultaneously when the ware shell has a complex structure. The method includes the following steps: a. putting a ware shell to be dried in a sealed chamber; b. vacuuming the sealed chamber under the premise condition of controlling the ware shell in a constant temperature state, and cooling the gas in the sealed chamber in a predetermined time period to condense the moisture in the sealed chamber; c. vacuum injecting gas to the sealed vacuum chamber to make the chamber return to normal atmosphere pressure; d. determining whether the ware shell is dry. If result is YES, then end, otherwise back to step b.

Methods and apparatus for drying ceramic green bodies include providing one or more ceramic green bodies in a microwave heating chamber operatively connected to a microwave source and a PLC. The total mass of the ceramic green bodies present in the microwave heating chamber is determined. Microwave energy is generated with the microwave source and transmitted from the microwave source to the microwave heating chamber. A transmitted power of the microwave energy transmitted from the microwave source to the microwave heating chamber is measured with power sensors. The reflected power of reflected microwave energy reflected back from the microwave heating chamber is also measured. The power of the microwave energy transmitted from the microwave source to the microwave heating chamber is adjusted based on the total mass of ceramic green bodies present in the microwave heating chamber, the measured transmitted power and the measured reflected power.

The invention discloses a self-rotary ceramic product processing oven which comprises an oven body. A plurality of supporting legs are fixed to the bottom face of the oven body. A push cylinder is fixed to the bottom face of a bottom plate of the oven body. A push rod of the push cylinder vertically and upwards stretches into the oven body, a placement plate is fixed to the end of the push rod of the push cylinder and is placed in the oven body, a rotary motor is fixed to the top face of the oven body, an output shaft of the rotary motor is hinged to a top plate of the oven body, the output shaft of the rotary motor vertically penetrates through an upper top plate and is fixedly provided with an upper clamping block, a lower clamping block is fixed to the middle of the top face of the placement plate, and the upper clamping block and the lower clamping block correspond to each other in the vertical direction. A ceramic product placed in the oven can be clamped between the upper clamping block and the lower clamping block, automatically rotate and be evenly dried. Besides, the oven body can be cooled quickly, an oven door and the oven body are separated, installation and detachment are convenient, and accordingly independent cleaning is facilitated.

The invention discloses a drying device for the production of pottery, which comprises a casing, a cavity is arranged inside the casing, four supporting legs are arranged at the bottom of the cavity, and the upper ends of the supporting legs are A conveying device is provided, the upper end of the conveying device is equidistantly provided with several placing plates, both sides of the placing plate are provided with supporting columns, and the opposite side of the two supporting columns is provided with chute, and the sliding A slider is installed in the groove, and the side of the slider away from the chute is provided with an electric telescopic rod. The end of the electric telescopic rod is provided with a support plate, and the support plates are provided with two mutually hinged grippers. , and pin holes are provided on the grippers, and several threaded through holes are arranged at equal intervals along the vertical direction on the support column, and locking devices are installed in the threaded through holes. The present invention carries out secondary drying treatment on pottery, has high drying intensity and good drying effect, and performs secondary utilization of resources, is environmentally friendly and energy-saving, and is suitable for popularization.

The drying method performs drying the honeycomb formed article by such an arrangement that superheated steam or mixed gas of steam and hot air, temperature and humidity of which is regulated so that wet-bulb temperature thereof becomes 70° C. or higher, is made to pass through the cells of the honeycomb formed article. The drying apparatus includes a steam supply unit that supplies the superheated steam, a buffer chamber that aligns the superheated steam supplied from the steam supply unit, an upper chamber disposed above the buffer chamber to locate the honeycomb formed article, and a hood unit that recovers the superheated steam which has passed through the honeycomb formed article.

A method in which an unburned honeycomb molding which has been formed from a raw-material composition comprising a raw ceramic material, water, and a binder and has cells serving as fluid channels and separated by partitions is subjected to a pretreatment for burning. The method includes a first step in which 100-150 DEG C overheated water vapor is passed through the cells to heighten the temperature of the honeycomb molding and then the overheated water vapor being passed is kept at a temperature which is not lower than the temperature of the overheated water vapor having been passed through the cells and is not higher than 200 DEG C. By the method of honeycomb molding pretreatment for burning, the honeycomb molding can be pretreated prior to burning in a shorter time while inhibiting the occurrence of troubles such as deformation and breakage.

The invention discloses a ceramic shell rapid drying method, belonging to the technical field of precision casting. The invention can ensure the quality of a ceramic shell and realize the rapid drying of the ceramic shell simultaneously when the ceramic shell has a complex structure. The method comprises the following steps of: a, placing the ceramic shell to be dried in a sealed cavity; b, vacuumizing the sealed cavity under the premise of controlling the ceramic shell to stay in a constant temperature state, and reducing the temperature of part of air in the sealed cavity within preset time so as to condensing moisture in the sealed cavity; c, carrying out vacuum deflation on the sealed cavity so that the state of the sealed cavity changes back to the ordinary pressure state; and d, judging whether the ceramic shell is dried, if so, terminating the step; and if not, turning to the step b. During the steps, the steps b, c, d need to be preformed repeatedly, in order to dry the ceramic shell. The method avoids excessive drying of some part by vacuum deflation of the seal chamber.

A method for drying a honeycomb formed body using microwaves is provided. The method can reduce the difference in the drying speed inside the honeycomb formed bodies during the drying process and can dry the honeycomb formed bodies without cell deformation. The method comprises placing the honeycomb formed body in a drying furnace with the cell axis in the vertical direction and irradiating the honeycomb with microwaves at a frequency of 300–30,000 MHz. The difference of the water content in the vertical direction of the honeycomb formed body 1 is maintained at 0.3% per mm or less during microwave irradiation.

An undried honeycomb formed body 41 is subjected to high-frequency heating in an atmosphere where humidity and temperature are maintained at 30 to 65% and 75 to 130° C., respectively, such that 50 to 99 mass % of water contained in the undried honeycomb formed body 41 is evaporated at the end of high-frequency heating, whereby the amount of water vaporized from the outer part of the undried honeycomb formed body 41 is increased, thereby reducing a difference between amount of water vaporized from the inner part of the undried honeycomb formed body 41 and that of water vaporized from the outer part thereof as well as reducing a difference between drying degree of the inner part of the undried honeycomb formed body 41 and that of the outer part thereof, thereby producing a dried honeycomb formed body 42 in which deformation of the partition walls is suppressed. The invention provides a honeycomb formed body drying method which prevents deformation of partition walls of the honeycomb formed body during drying thereof.

The invention provides a honeycomb formed structure drying method including causing undried honeycomb formed structures 10 placed on stands 12 to pass through a drying apparatus 1, thereby drying the undried honeycomb formed structures through high-frequency heating, to thereby form dried honeycomb formed structures 11; removing the dried honeycomb formed structures 11 from the stands 12; cooling the stands 12 which have been heated dried in the drying apparatus 1 are cooled to a temperature lower than the gelation temperature of the undried honeycomb formed structures 10; placing newly formed undried honeycomb formed structures 10 on the cooled stands 12; drying the undried honeycomb formed structures by passing through the drying apparatus 1; and repeating these operations. The honeycomb formed structure drying method prevents deformation such as warpage of partition walls of honeycomb formed structures during drying thereof.

Methods for drying ceramic materials are provided. In one embodiment, a first power set-point of a first microwave applicator of a drying apparatus is determined Power set-points for at least two additional microwave applicators in the drying apparatus are determined such that a power distribution among the microwave applicators provides an energy per unit of water profile for the additional microwave applicators that is substantially uniform. The microwave applicators may be operated at the determined power set-points as the ceramic material is passed through the drying apparatus.