SU1468882A1 - Charge for production of construction articles - Google Patents

Abstract

The invention relates to the industrial construction materials, in particular, to the production of wall ceramic products. The purpose of the invention is to reduce the duration of the drying of raw and reduce water absorption products. The mixture for the manufacture of construction products contains the following components, wt.%: Ash GRES 3, bo powder glass 7.0-15.0; alkali solution 10.0-11.0, granulated phosphoric slag - the rest. Drying time is 2–8 hours, water absorption is 9.64–10.9%, flexural strength is 17.1–18.6 MPa, 35., 2-48.4 MPa under compression. 3 tab. with $

Description

one

The invention relates to fplUieH-building materials, in particular to the production of building ceramics, and can be used, for example, for the production of kiln bricks, tiles, ceramic blocks.

The purpose of the invention is to reduce the duration of drying of the raw and reduce water absorption of products.

For the manufacture of pulp, granulated phosphoric slag, ash and cullet are used as raw materials, and as a binder, as a raw material. go - alkali solution.

In tab. 1 shows the chemical composition of raw materials.

These raw materials are ground to pass through a 0.08 sieve, then mixed.

with a solution of alkali to a working humidity of 10-12% and molded by pressing. Pressure when pressing 5-10 MPa.

The products are dried at 60-100 ° C and fired at 900-950 ° C.

In tab. 2 shows the composition of the proposed mixture.

Table 3 shows the physico-mechanical properties of the resulting building products based on granular phosphorous slags.

The material obtained on the basis of the proposed mixture has a satisfactory flexural and compressive strength and low water absorption. The drying time of the raw material is reduced by more than three times as compared with the prototype, and the firing temperature of the material is reduced by 50 C.

The essential difference between the proposed composition of the charge and the known one is that the mixture, including granulated phosphorus slag and ash, additionally contains an additive of glass and an alkali solution. The use of an alkali solution, which activates granulated phosphorus slag, avoids the use of a traditional clay component, which leads to a reduction in drying time. In addition, the alkali solution helps to reduce the firing temperature. The main firing temperature reduction is carried out by sharing ash and broken glass, which form low-melting eutectics — with granulated slag,

By X-ray phase analysis, it was found that the addition of ash also contributes to crystallization as the main phase of the | b - wollastonite, which is mainly due to its increased strength.

Example, Raw materials are first sieved through a 0.08 sieve, then the components are weighed in the right quantities and mixed. After thorough mixing, an amount of alkali is added to the dry mixture. 10.0- 1 1, 0% by weight of dry components and mixed again until a homogeneous wet mass is obtained. Facing tiles are formed from the mixture obtained (SWPM, 150) and bricks by pressing. Pressing pressure 5-10 MPa,

The products are dried in an oven at 60-100 ° C for 2-8 hours. Roasting is performed at 900 and 950 seconds with an exposure time of 1-3 hours. The resulting products have

white color, smooth and smooth surface

Thus, the use of the proposed composition of the mixture allows to obtain materials with high mechanical properties, with low water absorption. In addition, the products obtained on the basis of the proposed mixture, low drying time and relatively low firing temperature (900-950 ° C),

The indicated advantages of the proposed charge allow to intensify the technological process of the production of building products and to improve the quality of the finished product.

A distinctive feature of this mixture is a high content of industrial waste (90%), which allows to solve the problem of their utilization, as well as reduce the cost of finished products.

Claims (1)

Invention Formula The mixture for the manufacture of construction products, including granulated phosphoric slag, ash from a state district power station and an additive, is characterized in that, in order to reduce the drying time of the raw material and reduce water absorption of the products, it contains, as an additive, powdered glass and an additional alkali solution in the following ratio components, wt,%: Ash GRES3-7 Powder bo glass7-15 Alkali solution 10 - L 1 Granulated phosphoric slag Raw materials Chemical sall, wt.X  1 ± 0, go1-. 46.02 2.06 0.14 1.76 1.120.6 0.67 0, 92 Granulated. bath phosphoric NDFZ slag 41.0 5.70 Ash-AlmaSr ° 57.7 24.5 ... O 1.0 4., -0.2 0.13 1.57 -. 8.70 The cullet of the Plumbul glasshouse .- - 15 O n I; h -.0 - - - plant 7 /, and i, uh 8.5 3.0 t and c 0.92 Granular phosphoric slag Ash Powder bo glass Alkali solution 80,074,567,0 3.05, 7,010,015,0 10,010,511,0 Tab ipwz