SU1189839A1 - Method of producing light-weight aggregate - Google Patents

Abstract

WAYS OF MANUFACTURING EASY FILLER by introducing silica into an alkaline solution, heat treating the resulting mass, drying to a moisture content of 20 35%, granulation, swelling and cooling, characterized in that, in order to reduce water absorption and bulk weight of filler, silica is component from a mixture of 1.5-1.75 mach. glass tube and 1 ma.ch. precipitation of abrasive waste from the production of kinescopes is introduced into an alkaline solution from caprolactam production waste of 30–40% concentration, and the mixture is introduced in an amount of 0.60, 8 wt.h. on 1 ma.ch. the solution, heat / o treatment is carried out by autoclaving at a pressure of 3-6 atm for 20-40 minutes, after granulation is dried at 100 (L, and swelling is carried out at 775-800 ° C, followed by cooling with speed 60-80 S / h.

Description

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QD

The invention relates to the manufacture of building materials and can be used in the production of granulated materials from silica-containing components.

The purpose of the invention is to reduce the water absorption and filler bulk density.

A method of making a lightweight filler includes introducing the silica-containing component into an alkaline solution, heat treating the resulting mass, drying to a moisture content of 20-35%, granulation, swelling and cooling, while the silica-containing component from a mixture of 1.51, 75 wt.h. glass tube and 1 ma.ch. precipitates of abrasive stock from the production of kinescopes are introduced into an alkaline solution from caprolactam production waste of 30–40% concentration, and the mixture is introduced in an amount of 0.6–0.8 wt.h. on 1 ma.ch. solution, heat treatment is carried out by autoclaving at a pressure of 3-6 atm for 20-40 minutes, after granulation drying is carried out at 100-150 ° C, and swelling is carried out at 775800 ° C, followed by cooling at a rate of 60-80 ° C / h

The chemical composition of kinekop glass is as follows: SiO 62-68, PbO up to 11, A12Oz4-5, BaO 3-12, CaO + MgO up to 5, 7-8, 6-7, ZPgOz up to 0.3, Ti02 up to 0.32, F 0.8-0.9.

Abrasive sewage sludge is also a waste from the production of picture tubes produced in the sewage treatment plant of the machining section of the cones and the screen. Electrocorundum, quartz sand and ground glass are included in the sediment composition. The chemical composition of precipitation abrasive SiOj 94-97,

next: CaO + MgO to 0.05,

As an aqueous alkaline solution according to the proposed invention, waste products of caprolactam, including sodium adipate, are used. Liquid waste is burned at 1100-1200C, ground and dissolved in water, obtaining a solution of 30-40% concentration.

Examples of the implementation of the method and indicators of properties of the aggregates are presented in table.1 and 2.

Table 1

The contents of the glass on

1 ma.ch. abrasive, ma.ch.

The content of the mixture of glass and abrasive on 1 mach. May solution, h.

The concentration of the solution of waste production of caprolactam,%

Autoclaving Modes

Pressure, atm

Duration, min, Pellet drying temperature, ° С

Intubation temperature

granules, C

Cooling rate, ° C / h

1.75

1.6

0.6

0.7

thirty

3

40 150

775 60 31 Table 2 In the proposed method, a kinescope cullet of the following composition is used,%: SiOj 62.52, PbO 10.68 AljOj 3.47, BaO 2.9, CaO 2.34, MgO 2.02, NajO 6.4, KjO 8.12, 0.15, 0.28, TiOj 0.32, F 0.80, precipitation of abrasive waste containing,%: Si02 96.72, Al2O3.75 CaO 0.03, MgO 0.01, 0, 49, caprolactam production. Pellets are prepared as follows. Glass tube cullet and abrasive wastewater sediments are subjected to the help of 5 10 15 20 25 3Q 94 lu to a specific surface of 5000 cm / g. The mixture of broken glass and abrasive is introduced into an aqueous solution of caprolactam production waste. The resulting mass is placed in an autoclave and subjected to steam and steam processing. After autoclaving, the mass is dried at a moisture content of 25%. The dried mass is granulated on a plate granulator or other known method. The granules are dried to constant weight and calcined, followed by swelling of the granules, then the granules are cooled. In the process of autoclaving, hydrolytic destruction of the initial structure occurs with the formation of sodium meta-and disilicate, zeolite hydroaluminosilicates, the structure and silicates of alkaline earth metals. All neoplasms contain 7-15 water molecules - crystalline and: zeolitic, which are gradually removed during dehydration in the temperature range of 150-800 0. During the drying process of the suspension obtained in the autoclave, partial dehydration occurs, accompanied by an increase in the viscosity of the mass and its structuring as a result of compaction of the gel, polysilicon acid.

Claims (1)

METHOD FOR PRODUCING AN EASY FILLER by introducing a creme-containing component into an alkaline solution, heat treating the resulting mass, drying to a moisture content of 20 35%, granulating, swelling and cooling, characterized in that, in order to reduce the water absorption and bulk mass of the filler, the silica-containing component from the mixture 1.5-1.75 parts by weight cullet of picture tubes and 1 part by weight precipitation of abrasive wastes from the production of picture tubes is introduced into an alkaline solution from waste products of caprolactam production of 30-40% concentration, while the mixture is introduced in an amount of 0.60.8 wt.h. per 1 part by weight solution, heat treatment is carried out by autoclaving at a pressure of 3-6 atm for 20-40 minutes, after § granulation, drying is carried out at 100-150 ° С, and expansion is carried out at 775-800 ° С followed by cooling at a speed of 60-80 ° С / h . 118 ^ 839