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

Large Zibo kiln ceramic ware sintering technology

Porous foamed ceramic and preparation method thereof

The invention relates to the field of a ceramic product, and particularly relates to an emulsion whitening agent for ceramic and a preparation method thereof. The emulsion whitening agent for the ceramic consists of the following raw materials in parts by weight: 60-98 parts of zirconium silicate and 2-40 parts of a dopant mixture. The preparation method comprises the steps of wet-mixing active aluminum oxide or/and aluminum hydroxide hydrate as well as active silica powder or/and metasilicic acid and sodium carbonate according to the parts in weight so as to form the dopant mixture; wet-mixing zirconium silicate and the dopant mixture according to the parts in weight, grinding to 325 meshes, drying and then adding into a kiln, roasting under a micro-pressure of 0-0.2 Mpa, cooling and then wet-grinding, drying and packaging. The emulsion whitening agent for the ceramic provided by the invention is used for replacing the existing generally-used zirconium silicate so as to lower the cost of a ceramic enterprise, save limited zircon sand resources and reduce radioactive pollution of the ceramic.

Emulsion whitening agent for ceramic and preparation method thereof

The invention relates to a method for producing a light-weight insulating brick, and particularly relates to a method for producing a light-weight insulating brick by using alumina mining tailings pulp as the material. The method is characterized by comprising the following steps: by using alumina mining tailings pulp as the material, adding two or more auxiliary materials selected from coal ash, floating bead, expanded perlite and saw dust in the alumina mining tailings pulp, carrying out homogenization stirring at high speed, adding micro bubble, mixing, blanking, and drying and sintering blanks to prepare the product. The product produced by the method has the characteristics of high strength and thermal insulation property, and is an inorganic building thermal insulation material in urgent need in markets. Exterior insulation construction is not needed, and the product performance meets the technical requirement of energy saving of buildings in areas cold in winter and hot in summer, so that the product has strong market competitiveness.

Method for producing light-weight insulating brick

The invention provides a preparation method of a carbon fiber powder reinforced polyimide foam material. The mechanical property of the foam material can be obviously improved by adding a small amount of carbon fiber powder, and the foam material can be higher in strength under a relatively low density. Compared with an equal-density polyimide foam material without adding the carbon fiber powder, the compressive strength of the polyimide foam material with the added carbon fiber powder can be improved by 3-7 times. The technique of the preparation method does not need a mold with special processing, only needs a graphite plate, and is free of shape restriction or volume restriction, so that the polyimide foam material with any area and volume can be prepared, and high-efficiency production can be realized. The foaming technology and method provided by the invention can completely eliminate the defects on the bottom and surface of foam, so that the utilization rate of raw materials is effectively improved. The obtained polyimide foam composite material is light in weight and uniform in bore diameters, is free of defects, and has higher strength.

Preparation method of carbon fiber powder reinforced polyimide foam material

The invention discloses a foaming stone insulation board and a preparation method thereof, wherein the insulation board comprises the following components in percentage by weight: 90%-97% of feldspar, 2%-8% of mineralizer and 0.4%-2% of foaming agent. The preparation method comprises the following steps: firstly, mixing and grinding materials; then adopting a silicon carbide material for manufacturing a box body saggar; coating a clay anti-cohesion layer on the inner surface of the saggar; putting the mixed materials into the saggar and foaming and sintering the mixed materials in a tunnel kiln, wherein the sintering and foaming temperature is 1200-1250 DEG C; slowly cooling the mixed materials to obtain large blocky foaming stones; and cutting and processing the foaming stones into various blocky foaming stones. The foaming stone insulation board of the invention has the chemical composition and superior properties of the feldspar, the volume density is less than that of a light-weight insulating brick, the mechanical strength is higher than that of the light-weight insulating brick, the heat-insulating property is better than that of the light-weight insulating brick, the usage temperature is higher than that of foaming glass and foaming ceramics, and the foaming stone insulation board can be used for insulation of an outer layer of high-temperature equipment such as high-temperature kiln and the like, and can obviously improve the insulation effect.

Yongcheng Gu

Papers

Foaming stone insulation board and preparation method thereof