A comparative analysis of the physicotechnical properties of existing and proposed perlite heat-insulation products, agricultural components, and acoustic fillings, demonstrating significant improvement in the quality of the latter, is presented. In this connection, a selective method is proposed for developing perlite deposits in thin extraction layers in order to obtain a homogeneous perlite rock in terms of average density with classification by size fractions, which will make it possible to obtain a homogeneous raw material and expanded perlite with a stable set of properties.

中文翻译：

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定性改良膨胀珍珠岩的应用（综述）

介绍了对现有和拟议珍珠岩隔热产品、农业部件和隔音填料的物理技术特性的比较分析，表明后者的质量有显着提高。在这方面，提出了一种在薄提取层中开发珍珠岩矿床的选择性方法，以获得平均密度均质的珍珠岩岩石，并按粒度分数分类，这将使获得均质原材料和膨胀珍珠岩成为可能具有一组稳定的属性。