SU1244092A1 - Method of producing soluble glass - Google Patents

Description

one .

The invention relates to the production of sodium silicates and can be used, for example, to control the properties of clay suspensions, slips and cement raw sludges in the technology of cement clinker, concrete, wall materials, ceramic products and for other purposes.

The aim of the invention is to simplify the method and reduce energy costs.

Example G. A ball mill was loaded with 1 kg of perlite, 1.5 kg of water, 0.0015 kg of sodium tripolyphosphate (alkaline solution with an alkali concentration of 0.1%) and 1.5 kg of porcelain balls. The mixture was ground for 15 hours to complete passage the suspension through sieve No. 0063, after which 0.15 kg of sodium hydroxide was added in the form of a 40% solution and grinding continued for another 6 hours. We received liquid glass with a density of 1.43 to 10 kg / m and viscosity 0.1 Pa-s suitable, for example, for reducing the viscosity of clay suspensions, ceramic slurries and cement raw materials spam. ,

Example 2. In the ball mills downloaded 1.5 kg of porcelain balls, 1 kg of broken glass, 0.001 kg of caustic soda and 1.5 kg of water (0.07% solution of caustic soda in water). The mixture was ground for 20 hours until the suspension completely passed through sieve No. 0063. To the suspension was added 0.15 kg of sodium hydroxide in the form

A 40% solution, followed by grinding the suspension for 5 hours. Liquid glass was obtained with a yield of 97%, a density of 1, and a viscosity of 0.1 Pa-s, suitable for reducing the viscosity of clay suspensions, ceramic slips and cement raw materials 1x sludge.

Example Z.V ball mill loaded 1.5 kg of porcelain balls, 1 kg of glass and 0.024 kg of liquid glass obtained in example 2 with the addition of 1.5 kg of water (solution with an alkali concentration of 0.08%). The mixture was crushed for 17.5 hours until the suspension completely passed through sieve No. 0063, after which 0.15 kg of sodium hydroxide was added as a 40% solution, grinding was continued for another 5 hours, the suspensions were allowed to stand for 10 hours and a liquid glass was obtained the yield of clarified solution is 90%, density of 1.410 kg / m and viscosity 0.1 Pa-s.

The boundary values of the parameters of the process of obtaining liquid glass

determined in a similar way to Example 1. Results of the effect of alkali concentration on the duration of grinding to a belt-rich material and energy consumption per ton of liquid produced

glasses are shown in the table.

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145 120 110 100 100 110 140 180

160

The lower limit value of the alkali concentration during grinding (0.005%) is due to the fact that with a further decrease in the concentration of alkali, the duration of grinding and energy consumption for the process increase. The upper limit value of the alkali concentration (0.2%) is due to the fact that with further increase it also increases the duration of grinding and energy consumption for the process.

The invention makes it possible to reduce the proliferation of the process and energy consumption.

The cost of its implementation in 1.5-1.6 is enough for only one grinding time, while at the same time simplifying the method, for example, the ball mill, as for its implementation.

Claims (1)

METHOD FOR PRODUCING LIQUID GLASS, including the processing of siliceous material with an aqueous solution followed by treatment with a 30-50% alkali solution, characterized in that, in order to simplify the process and reduce its energy intensity, the process is carried out during grinding, and as an aqueous solution, 0.005- 0.2% alkali solution. R. G. In a ball mill 1 kg perlite, 1.5 kg kg sodium tripolyphosphate