KR930009952A - Manufacturing method of building materials based on fly ash - Google Patents

Abstract

The present invention is a method for producing a lightweight aggregate prepared by repeating the heating curing and heat firing processes one or more times with respect to a mixture obtained by adding fly ash as a main raw material and adding sodium silicate, zinc oxide, potassium carbonate, etc. as an additive and the additive. After the addition of the mixture is poured into a mold for manufacturing bricks, pressurized to take out the shape of a brick, and then a drying and thermosetting process relates to a manufacturing method of light weight, refractory brick produced by repeating one or more times. The light weight aggregate manufactured by the above method has excellent light weight, water resistance, and strength, and the light weight and fireproof brick may be used in various ways because it has light weight with excellent heat resistance. Also light aggregate and gwanyang according to the present invention. Refractory bricks are manufactured using fly ash, which is industrial waste, as a main raw material, thus providing an effective solution in terms of treatment and recycling of industrial waste.

Description

Manufacturing method of building materials based on fly ash

Since this is an open matter, no full text was included.

Claims (21)

Method for producing a lightweight aggregate, characterized in that the mixing of the additives including fly ash and sodium silicate as a main raw material uniformly, and aged, at least one or more heat curing and heating. As a main raw material, the additives including fly ash and sodium silicate are uniformly mixed, poured into a molding mold, pressurized and stamped into a predetermined shape, and then the drying and thermosetting are performed at least once. Manufacturing method. Light weight and fireproof, produced by mixing sand and cement with light aggregate, which is made by uniformly mixing additives containing fly ash and sodium silicate as a main raw material, aging them, and then performing heating generation and thermosetting at least once. Method of making bricks. The method of claim 1, wherein the additive material further comprises any one or more of zinc oxide and potassium carbonate. 5. The method of claim 1 or 4, wherein the additive material further comprises sand and cement. 5. The method of claim 1 or 4, wherein the additive material further comprises aluminum powder and caustic soda. The method for producing lightweight aggregate according to claim 1, wherein the aging is performed at a temperature of 40 to 60 ° C. for 0.5 to 2 hours. The method of claim 1, wherein the heating curing is carried out for 1 to 5 minutes at a temperature of 120 to 200 ° C. The method of claim 1, wherein the heating curing is a method of producing a lightweight aggregate, characterized in that the method by high-frequency heat drying. The method of claim 1, wherein the heating curing is a method for producing a lightweight aggregate, characterized in that the method by infrared irradiation. The method of claim 1, wherein the thermal firing is carried out for 30 seconds to 20 minutes at a temperature of 600 ~ 1200 ℃. The method for producing a lightweight fire-resistant brick according to claim 2, wherein the additive further comprises at least one of zinc oxide and potassium carbonate. The method for producing a lightweight fireproof brick according to claim 2 or 12, wherein the additive further comprises a powder obtained by finely pulverizing any one or more of PS, PVC, and PE. The method for producing a lightweight fire resistant brick according to claim 2 or 12, wherein the additive further comprises at least one of castable and aluminum oxide. The method for producing a lightweight fireproof brick according to claim 2, wherein the drying is performed by applying a heat of 70 ° C to 250 ° C. The method for producing a lightweight fire-resistant brick according to claim 2, wherein the heat firing is performed by applying a heat of 800 ° C to 1200 ° C. The manufacturing method of light weight and refractory brick of Claim 2 which further includes the process of applying the heat of 1200 degreeC or more to the surface of the molded object obtained after the said thermosetting process, and it is possible to coat | cover a brick surface. The method of claim 4, wherein the weight ratio of the fly ash to the additive is in the following ratio. Fly ash: 50 to 90 parts by weight, sodium silicate: 1 to 30 parts by weight, zinc oxide: 1 to 4 parts by weight, potassium carbonate: 1 to 8 parts by weight. The weight ratio of the said fly ash and the said additive is a ratio as follows, The manufacturing method of the light weight and refractory brick of Claim 4 characterized by the above-mentioned. Fly ash: 50 to 90 parts by weight, sodium silicate: 1 to 30 parts by weight, zinc oxide: 1 to 4 parts by weight, potassium carbonate: 1 to 8 parts by weight. The method of claim 1, wherein the component and composition ratio of the fly ash is as follows. SiO ₂ : 40 wt% or more, Al ₂ O ₃ : 15 wt% or more, Fe ₂ O ₃ : 2 wt% or more, and others: 40 wt% or more. The method for producing a lightweight fireproof brick according to claim 2, wherein the component and composition ratio of the fly ash are as follows. SiO ₂ : 40 wt% or more, Al ₂ O ₃ : 15 wt% or more, Fe ₂ O ₃ : 2 wt% or more, and others: 40 wt% or more. ※ Note: The disclosure is based on the initial application.