Showing papers on "Saggar published in 2015"

Preparation process for anticorrosion saggar for calcination of lithium battery cathode material

Abstract: The invention discloses a preparation process for an anticorrosion saggar for calcination of a lithium battery cathode material. The preparation process includes the steps of primary aggregate preparation, secondary aggregate preparation, matrix material preparation and saggar preparation. The steps of primary aggregate preparation and secondary aggregate preparation sequentially comprise the procedures of powder preparation, ball milling slurry preparation, slurry preparation, slurry storage, blank preparation, blank drying and blank calcination. The step of matrix material preparation sequentially includes the procedures of matrix material burdening, matrix material ball milling and matrix material screening. The step of saggar preparation sequentially includes the procedures of saggar material preparation, bundling pressing, maintenance drying and high-temperature firing. Primary aggregates, secondary aggregates and a matrix material are mixed according to the process ratio to form a saggar material. The anticorrosion saggar has the alkali-resistant and anti-corrosion functions, and pure magnesium hydrate, aluminum oxide and silicon dioxide are calcinated to obtain high-purity cordierite material aggregates; magnesium-aluminum-rich spinel powder is added for preparing the matrix material, and the saggar is small in heat expansion coefficient, high in heat impact resistance and long in service life.

Large Zibo kiln ceramic ware sintering technology

Abstract: A large Zibo kiln ceramic ware sintering technology relates to the technical field of ceramic The technology comprises the following steps: 1, adding water to glaze, mixing, and applying the obtained mixed liquid to a ceramic base substrate; 2, building a die on a surface layer, wherein the die is a cuboid with a bent middle portion; 3, pressing 20-30mass% of carbon, 65-75mass% of silicon and 3-5mass% of clay by a press, putting the obtained substance in a kiln, and carrying out calcining sintering molding at 1650-1750DEG C to form a ware with the thickness of 12-15cm, building a cylinder in the periphery of the large molded ceramic ware, and sealing the top to obtain a saggar; and 4, carrying out radiation heating, sintering the saggar by naked fire without contact with a cylinder from 0DEG C to 300DEG C for 18h, uniformly heating from 300DEG C to 1100DEG C by adopting oxidizing flame for 36h, and heating from 1100DEG C to 1320DEG C by adopting reducing atmosphere for 20h to complete sintering The technology prevents collapsing, cracking, kiln drawing cracking and other phenomena, and has a high yield

Technique for firing spinel-type black ceramic material with tunnel kiln

Abstract: The invention discloses a technique for firing a spinel-type black ceramic material with a tunnel kiln, which comprises the following steps: 1) uniformly mixing 25-40 wt% of chrome oxide green, 30-45 wt% of iron oxide red, 2-25 wt% of cobalt oxide, 10-20 wt% of nickel protoxide and 0-20 wt% of dopant; 2) filling the mixture obtained in the step 1) into a saggar by 70-80% full, calcining in a tunnel kiln, and naturally cooling the calcining product, wherein the technological conditions for calcination are as follows: the temperature of the preheating region is 1170-1250 DEG C, the temperature of the high-temperature region is 1200-1300 DEG C, and the transmission speed is 12-20 hours from charging to discharging; 3) pulverizing and grinding the cooled calcining product; and 4) adding concentrated hydrochloric acid to wash the calcining substance powder obtained in the step 3), stirring to sufficiently react, stirring, washing with water until the pH value is 7, drying and screening The ceramic pigment has the advantages of high color development capacity and low cost

A preparing method of a ternary-material lithium battery saggar

Abstract: The invention relates to a preparing method of a ternary-material lithium battery saggar. Synthetic mullite is adopted as a main raw material, and the mass of the synthetic mullite accounts for 70% of the total mass. Synthetic cordierite is adopted as a main auxiliary material, a wax mixing agent is added, and the mass of the synthetic cordierite and the wax mixing agent accounts for 30% of the total mass. The ternary-material lithium battery saggar is prepared by subjecting the main raw material and the main auxiliary material to granule smashing and graduation in order by a sand powder preparing device, mixing and fully stirring by a mixing and pulping device into which the wax mixing agent is added in advance so as to complete preparation of pulp used for a product blank, further stirring by a molding device, vacuumizing, removing bubbles, cooling, molding, discharging components of the wax mixing agent in the product blank by a wax discharging device, firing the product blank by a firing device, subjecting the product blank to external and internal surface treatment by a surface treatment device, and drying. The technical scheme of the method can effectively reduce the saggar cost, improve product quality and prolong service lifetime of the product.

Combined detachable high-temperature sintering-bearing saggar and preparation method and application thereof

Abstract: The invention relates to a combined detachable high-temperature sintering-bearing saggar and a preparation method and application thereof, and belongs to the technical field of appliances for ceramic sintering The combined detachable high-temperature sintering-bearing saggar comprises a plurality of first assemblies and a plurality of second assemblies, wherein the plurality of first assemblies are mutually connected in a matched manner through grooves of the first assemblies and columns ribs and connecting portions of adjacent first assemblies; second grooves of the second assemblies are connected with the columnar ribs and connecting portions of the first assemblies in a matched manner The sintering-bearing saggar provided by the invention has the advantages that the structure is reasonable and simplified, the heat can be effectively transferred, the heat is uniformly transferred, and the rate of finished products of sintered precision ceramic parts is effectively improved

Technology for producing non-sintered fireproof saggar by biogel mixed with coal slag and aluminum alum

Abstract: The invention relates to a technology for producing non-sintered fireproof saggar by biogel mixed with coal slag and aluminum alum, which comprises the following steps: adding fireproof and high temperature-resistance aluminium alum powder, coal slag powder, wollastonite powder, alundum powder and clay powder in glue water which is made by blending euphorbia humifusa and Kiwi fruit in water, and then preparing the dual-viscous mix fire clay, placing in a mold for making the saggar, compacting and compressing, solidifying, and removing the mold to obtain the fireproof saggar. Due to the dual-viscous technology, the produced fireproof saggar has the advantages of sturdy and durable performance and environmental protection by anti-compression high temperature-resistance non-sintered coal.

PTC thermistor ceramic sintering saggar coating and preparation method and application thereof

Abstract: The invention relates to a PTC thermistor ceramic sintering saggar coating and a preparation method and application thereof. The formula of the coating comprises the following components in percentages by weight: 30% of Pb3O4, 24% of BaCO3, 28% of TiO2, 14% of ZrO, 2.3% of CaCO3 and 1.7% of SiO2. The preparation method comprises the following steps: preparing base materials and ball-milling into a sizing agent, drying the sizing agent and putting in a tunnel kiln for synthesis, then compounding and ball-milling to prepare a coating, and then performing twice sintering to obtain the coating. The coating is mainly applied to the inner surface of a PTC thermistor ceramic sintering saggar. The coating is prepared on the inner wall of the sintering saggar, and when a PTC thermistor ceramic plate is loaded, the coating blocks the direct contact between the PTC thermistor ceramic plate and a corundum-mullite mixed saggar, so that the chemical reaction of the PTC thermistor ceramic plate and the corundum-mullite mixed saggar is prevented, and then the quality of the PTC thermistor ceramic plate is guaranteed.

Yellow pigment composition of ceramic ink and preparation method thereof

Abstract: The invention belongs to the technical field of ceramic pigments and in particular relates to a yellow pigment composition of ceramic ink and a preparation method thereof, mainly solving the following problems of traditional pigments: low calcination temperatures, low chromogenic saturation, long working hours and low efficiency. The yellow pigment composition of ceramic ink is prepared from zirconium dioxide, quartz powder, praseodymium oxide, barium fluoride, potassium chloride and ammonium chloride. The method specifically comprises the following steps: (1) mixing the materials; (2) firstly mixing glass powder with low-temperature ceramic frit to prepare glaze, pouring the milled glaze into a saggar, shaking up the milled glaze and smearing the milled glaze on the inner surface of the saggar, wherein the thickness of the glaze on the wall and at the bottom of the saggar is 0.1-1mm; (3) airing the smeared saggar; (4) calcining the materials; and (5) using a micro-pulverizer for treatment after crushing, thus preparing the yellow pigment composition of ceramic ink.

Combined ceramic sintering silicon carbide saggar

Abstract: The utility model provides a combined ceramic sintering silicon carbide saggar. Bottoms are arranged at the lower portions of saggar bodies, and the upper portions of the saggar bodies are provided with openings which are covered with saggar lids. The saggar lids and the upper edges of the saggar bodies are sealed through quartz sand bed courses, and saggar cavities are formed in the saggar bodies and the saggar lids. Unitary saggar bodies composed of the saggar bodies and the saggar lids are arranged layer by layer, so that the combined ceramic sintering saggar is formed. The sintering saggar is formed by combining the multiple layers of the saggar bodies, quartz sand is used as the bed courses between the saggar bodies and the saggar lids, and therefore the silicon carbide saggar is good in sealing performance, high in sintering temperature, good in thermal insulation and high in sintering efficiency. Accordingly, the combined ceramic sintering silicon carbide saggar is suitable for being used as a high-grade ceramic sintering saggar.

Saggar and powder production method using the same

Abstract: PROBLEM TO BE SOLVED: To provide: a metal saggar for powder production such as metal or ceramic used as a material for electronic industrial products; and a method for effectively enabling a mass production of the high-quality powder as a material for multi-lamination ceramic capacitor (hereinafter MLCC), electromagnetic wave shield, secondary battery, fuel cell, or the like.SOLUTION: A saggar used for oxidation and/or reduction reaction while heating a precursor of metal powder or metal compound powder includes: a bottom face; a side wall standing from the bottom face. The upper portion of the saggar is opened. The saggar includes: a box-like body at an upper portion thereof having at least more than two cutouts; a base standing at at least three locations inside of an upper portions of the side wall of the box-like body; and a stopper with an edge portion projected upward from the base at three or more locations in outside of the side wall standing at the base. The box-like body is made of metal material having a melting point of 700°C or more, and 150°C or more higher than the maximum heat temperature, while a ratio of the height between the cutout and the side wall is 2.5:97.5 to 45:55.

Base plate structure for high-temperature push plate kiln

Abstract: The utility model discloses a base plate structure for a high-temperature push plate kiln. A saggar which is placed with a product blank and used for calcination is arranged inside the high-temperature push plate kiln. The saggar is placed on a push plate. The push plate is placed on a base plate, and the push plate is stressed to move relative to the base plate and drive the saggar to enter or exit a kiln chamber of the kiln. The base plate structure for the high-temperature push plate kiln is characterized in that more than two forked tail wedged opening grooves are formed in the surface of the base plate along the moving direction of the push plate, multiple porcelain balls with centralized positioning and free rotating are distributed in each forked tail wedged opening groove in an embedded mode, the push plate is in contact with the porcelain balls, and the porcelain balls are moved due to rolling friction. According to the base plate structure, a forked tail wedged opening mode is adopted on the embedded connection of the base plate and porcelain scoops, and the porcelain balls are contained in the porcelain scoops which are folded, so that the porcelain scoops and the porcelain balls can be effectively prevented from falling off during the operation; by changing the friction mode of the push plate and the base plate into a rolling friction mode, pushing force of the push plate is substantially lowered, the service life of the base plate is greatly prolonged, and meanwhile, the accident rate of the push plate kiln is effectively reduced.

Process of firing zirconium vanadium blue zirconium-based ceramic pigment by using electric roller kiln

Abstract: The invention discloses a process of firing a zirconium vanadium blue zirconium-based ceramic pigment by using an electric roller kiln. The process comprises the following steps: 1) uniformly mixing 50-60% by weight of zirconium dioxide, 25-35% by weight of quartz powder and 2-7% by weight of vanadium pentoxide; 2) then adding 5-15% by weight of an alkaline-earth metal halide or an alkali halide and uniformly mixing and then smashing; 3) filling the mixture in a saggar, and naturally cooling after calcining by the electric roller kiln, wherein the calcining process conditions are as follows: 800-950 DEG C in a high-temperature region and the transmission speed: 10-22H from feeding to discharging; and 4) adding alkali to the cooled calcined substances, ball-milling, washing till the pH is 7, and then, drying, screening powder and uniformly stirring to obtain the pigment. According to the process disclosed by the invention, the ceramic pigment is good in chromogenic quality and low in energy consumption at the same time, and the production cost is lowered.