SU1530613A1 - Method of producing construction bricks - Google Patents

Abstract

The invention relates to the building materials industry, namely to the production of building bricks. In order to reduce the duration of drying, roasting and reducing the roasting temperature, before forming the blanks in a heated to 200-300 ° C, phosphorus slag granules with a grain size of 0.5-3.5 mm are successively applied a layer of liquid glass, glass sugar and an additional layer water glass, and firing is carried out by placing the molded preform in a furnace at 600 ° C, holding at this temperature for 20 minutes, then heating to 850 ° C and holding at it for 30 minutes. The firing temperature is 850 ° C, the compressive strength is 21 - 22.5 MPa, the water absorption is 12.4 - 13.8%, the bulk density is 1360 - 1400 kg / m ³ . 2 tab.

Description

one

(21) 3S9655 / 23-33

(22) 02.12.87

(k6) 12/23/89. Bul N kl

(71) Lzhambul Irrigation and Construction Institute

(72) Z.T.Suleimenov, A.A.Sagyndykov and V.Ya. Del

(53) 666.713 (088.8)

(56) Frost I.I. Technologists of construction ceramics. - Kiev: Gosstroyizdat, 1961, pp.116-120.

Author's certificate of the USSR No. 388886, cl. From Qk to 29/02, 1971.

(S) METHOD OF MANUFACTURING A CONSTRUCTION BRICK

(57) The invention relates to the building materials industry and, in particular, to the manufacture of building materials.

brick. In order to shorten the drying time, roasting and reducing the roasting temperature, before forming the blanks in a heated to 200-300 ° C, phosphorus slag granules with a grain size of 0, 5 mm are successively applied a layer of liquid glass, glass scrap powder and an additional layer of liquid glass, and the firing is carried out by placing the molded preform in an oven with a temperature of C, holding at this temperature for 20 minutes, then heating to 850 ° C and holding it for 30 minutes. The firing temperature, compressive strength of 21-22.5 MPa, water absorption 12, 4 - 13.8, bulk density 1360-UOO kg / m3. 2 tab.

(L

The invention relates to building materials and can be used for the production of building bricks.

The aim of the invention is to reduce the duration of drying and calcination, reducing the calcination temperature.

Processing the granules of the phosphorus slag with a solution of liquid glass allows them to be evenly powdered with a glass powder. When pressed, a layer of glass powder impairs the adhesion between the granules; therefore, repeated treatment of powdered granules with a solution of liquid glass is necessary. When products are molded in a heated to 200 form, water vapor is released, which promotes the activation of liquid glass hardening, thereby achieving the necessary strength of the powder, which allows placing the molded products directly into the firing tunnel kiln at 6 ° C. The structure of the sample, consisting of phosphorous slag granules coated with glass powder, facilitates easy removal of residual water while eliminating its destruction. A holding at 600 ° C for 20 minutes allows the temperature to be the same throughout the entire volume of the sample. In the second zone at 850 ° C and a shutter speed of 30 minutes, the glass powder is melted on the granules of phosphoric slag.

SL

with

35

with

bonding the granules with a glass melt to each other.

In tab. 1 shows the blend compositions of building bricks; Table 2 - properties of building bricks.

The proposed formulations are prepared according to the following technology.

Phosphoric slag granules with a fraction of 0.5-3.5 mm and half of the 70% solution of liquid glass, i.e. 2% (composition 1) is loaded into the mixer and subjected to stirring until it is completely wetted on the surface; these granules are filled with a solution of liquid glass. Then they load the glass powder that has passed through the sieve, obtained from the waste of container, window glass, and continue mixing for 5-10 minutes. To the powdered glass powder with granules of phosphorus slag add the remaining part of a 70% solution of liquid glass and mix for 5-10 minutes.

The resulting mixture is loaded into a heated to 200-300 C form and subjected to pressing at a pressure of 120-150 kgf / cm2. Molded products come directly into the tunnel kiln, in which they are fired according to the mode: 1 - 600 C zone - 20 minutes, 2 - zone - 30 minutes.

PRI me R 1. Sifting out granulated slag from a fraction of 0.5–1.5 mm in an amount of 1b% is mixed in a mixer with a 2% 70% liquid glass b solution for 5 minutes. 20% of the glass powder passed through the 01D sieve is added thereto and stirring is continued for 10 minutes. Next, the remaining 2% of a 70% water glass solution is added to the granulated phosphorus slag to the powdered glass granules and stirred for another 5 minutes. The mixture thus prepared is loaded into a form heated to 200 ° C and pressed under a pressure of 150 kgf / cm. The molded product is placed in a tunnel oven with an initial temperature of 600 ° C with a holding time at this temperature for 20 minutes. Then the samples are heated to B50 C at a speed of 8-10 ° C / min and kept at this temperature for 30 minutes.

PRI mme R 2. Screening of granules of phos-, fororny slag fraction 1.5-2.5 mm

306134

78 is stirred in a mixer with a 2.5% 70% liquid glass solution for 10 minutes. 17% of the glass powder passed through the OH sieve is added and stirring is continued for 5 minutes. Next, to the powdered glass powder, the granules of the phosphorus slag are added with the remaining JQ with 2.5% of a 70% aqueous solution of liquid glass. The mixture is loaded into a form heated to 250 ° C and pressed at a pressure of 120 kgf / cm. The firing mode is similar to that shown in example 1.

5 Example. Screening of granules of phosphorus slag fraction 2.5-3.5 mm in the amount of 80% is mixed in the mixer with 2.5% of a 70% aqueous solution of liquid glass for 10 minutes. Doboil 20 are 15% of the glass powder that has passed through the 01 sieve and continue stirring for 5 minutes. The remaining phosphorus slag granules are then added to the powdered glass granules.

25 2.5% 70% solution of liquid glass. The mixture is loaded into a heated to the form and pressed at a pressure of 120 kgf / cm. The firing mode is similar to that shown in example 1.

Claims (1)

Invention Formula A method of making construction bricks, including mixing a filler with a binder, forming a preform in a mold preheated to 200-300 ° C, and roasting, characterized in that granules are used as filler in order to reduce the duration of drying and roasting, reduce the roasting temperature. phosphorus slag with a particle size of 0.5-3.5 mm, and as a binder - liquid glass, before forming a layer of liquid glass, broken glass powder and an additional layer of liquid glass are sequentially applied to the granules of phosphorus slag And calcining axes estvl dissolved by preform stance placed in an oven with temperature, holding at this temperature for 20 min, subsequently heating to and holding at it for 30 min. 76 20 78 17 80 15 Compressive strength, MPa Water absorption,% Volume weight, kg / m3 22.5 21.2 21.0 12, i 13.1 13.8 1360 1360 I tOO