CS257360B1 - Spray liquid - Google Patents

Abstract

A rinsing liquid for reducing the fibrogenicity of quartz dust, which is used as a rinsing liquid in the separation process or for rinsing dusty environments, consisting of an aqueous solution, the essence of which is that it contains a salt of the pentahydroxy or dihydroxy aluminum ion in a concentration of 0.01 to 0.03% by weight.

Description

The invention relates to a scrubbing liquid for reducing the fibrogenicity of silica dust.

To date, technical prevention to reduce the fibrogenic effect of quartz dust has been done by reducing the concentration of real dust, reducing the fine respirable dust content, or coagulating aerosol dust by wetting and removing dust from the working environment by efficient ventilation.

Known cases of influencing the silica fiber fibrogenicity have been tried as forms of preventive therapy of silicosis by treating e.g. aluminum powder, aluminum hydroxide, aluminum chlorohydroxialtantoinate and other preparations and medicaments, for example polyvinylpyridine oxide, procaine and the like. applied as an aerosol to the lungs after inhalation of silica dust.

The disadvantages of these methods are the limited effectiveness of prevention, the high economic costs of their provision, the complex technical and organizational measures, and the potential health risk of application of these substances in the form of protective aerosols.

The above drawbacks are eliminated by a scrubbing liquid for reducing the silica fiber fibrogenicity used as an irrigation liquid in the disassembly process, or for scrubbing a dusty environment, consisting of an aqueous solution comprising a salt of pentahydroxy [Al2 (OH) s] ⁺ or dihydroxy [ Al (OH) 2] ⁺ aluminum at a concentration of 0.01 to 0.03 wt.

The scrubbing fluid to reduce the fibrogenicity of the silica dust allows for effective technical prevention of lung silicosis directly at the birth of the silica dust in all known processes of material disintegration or transport. By influencing the complex basic aluminum salts, quartz dust loses its original surface properties and, when inhaled into the lungs, behaves like a grain of alumosilicate. Its new surface matrix is stable over time and does not degrade in the lungs after dust has been deposited. The specific harmfulness of dust due to fibrogenicity is reduced by up to 60%, resulting in a reduction in the risk of dustiness and an elimination of the risk of occupational disease during working age. High prevention efficiency, low technical implementation are the main advantages of this liquid.

The reduction of the quartz dust fibrogenicity of the invention is achieved by adding a complex salt of pentahydroxy or aluminum dihydroxy from a saturated solution to a final concentration in the rinsing water of 0.02% by weight in the rinsing water used in the decoupling process or for scrubbing the dusty environment. The basic aluminum salts react with the surface groups of the silica dust to form an alumosilicate layer. In this way, the silica fiber fibrogenicity can be reduced by 60%.

Spray liquids can be used in mining, metallurgy, civil engineering, the glass and ceramics industries and in measures of ecological importance, wherever either primary or secondary silica-containing dust is produced and collected.

Claims (1)

Spray liquid primarily to reduce the fibrogenicity of quartz dust, used as an irrigation liquid in the disconnection process or for sprinkling A dusty medium comprising an aqueous solution, characterized in that it contains a salt of pentahydroxy or aluminum dihydroxy in a concentration of 0.01 to 0.03% by weight.