A light-weight flame-retardant diatomite brick and its preparation method

Abstract

The invention discloses a light flame-retardant diatomite brick and a preparation method thereof, which is composed of the following raw materials in weight percentage: 35-40% of waste diatomite, 35-40% of cement, 3-5% of red mud, animal protein Foaming agent 5‑10%, the rest are water. The waste diatomite is the waste diatomite after oil extraction and harmless treatment of oil-containing diatomite in the aluminum processing industry. The weight ratio of silicon dioxide in the waste diatomite is greater than 80%, and the oil content is less than 0.001%. . Compared with the prior art, the present invention uses the waste diatomaceous earth in the aluminum processing industry to prepare light-weight flame-retardant wall bricks, which avoids waste of resources and is environmentally friendly, and the waste diatomite in the aluminum processing industry can withstand 1000 The high temperature of ‑1200°C is used for wall bricks, which greatly improves the flame retardancy of lightweight flame-retardant wall bricks; and the thermal conductivity of waste diatomite is less than 0.06W (m.k), which has good heat insulation performance; waste silicon is selected The diatomaceous earth is more than 150 mesh, and the porosity is high, which makes the sound insulation effect of the flame-retardant wall brick good; because the waste diatomite has a low density, the process adopts a closed process throughout the process, which will not cause dust pollution.

Description

technical field [0001] The invention belongs to the technical field of manufacturing environmental protection building materials, and particularly relates to a light-weight flame-retardant diatomite brick and a preparation method thereof. Background technique [0002] In the production process of the aluminum processing industry, a large amount of waste diatomite will be produced. The waste diatomite after oil extraction and harmless treatment generally contains a small amount of metal debris, which cannot be reused in normal industrial production. In terms of diatomite resource utilization, there is no good technical process at home and abroad. The more common treatment method is landfill, which will not only cause certain environmental pollution, but also occupy a lot of landfill or stacking land, and also cause Huge waste of resources. Therefore, it is necessary to develop a new type of environmental protection and energy saving technology to turn this part of waste diat...

AI Technical Summary

Problems solved by technology

[0002] In the production process of the aluminum processing industry, a large amount of waste diatomite will be produced. The waste diatomite after oil extraction and harmless treatment generally contains a small amount of metal debris, which cannot be reapplied in normal industrial production. In terms of resource utilization of diatomite, there is no good technical process at home and abroad. The more common treatment method is landfill, which will not only cause certain environmental pollution, but also occupy a large amount of landfill or stacking land, and also cause huge waste of resources