Building board

Abstract

The invention relates to A building board comprising a base course and a surface course, wherein the surface course is combined at the outer surface of the base course, wherein the base course made from a composition which comprises raw materials of light burning magnesium powder, magnesium chloride solution, mineral powder originated from city refuse, glass fiber, shale and hydrochloric acid, the surface course made from a composition which comprises raw materials of light burning magnesium powder, magnesium chloride solution, quartz powder and hydrochloric acid. The invention changes part of materials in city refuse into useful resource so as to protect the environment and increase the economic benefit.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a building board.[0003]2. Description of the Related Art[0004]The city refuse contains a plurality of diverse ingredients such as plastic, paper, clothes, dry and fresh plants, wood blocks, glass, ceramics, sand stones and dusts, which is difficult to be treated. Currently, only a small amount of materials which can be directly recycled has been recycled, most of materials of refuse disposed by a landfill or a burning method. These treatment techniques have some defects that cannot be ignored. The landfill method needs to occupy the ground and brings pollution to the underground water and air, while the burning method needs to consume energy and its flue gases contains harmful gases and suspended particulates which are difficulty to be treated further. Therefore, people start to gradually attempt to separate the city refuse and then carry on different treatments according to the separated differ...

AI Technical Summary

Benefits of technology

[0008]As the raw materials of the build board include mineral powder originated from the city refuse, this invention changes useless materials into useful resource, reducing expense of discharging city refuse and cost of building board. The produced building board has good service performance such as light weight, waterproofing, corrosion prevention, flame retardant and heat preservation.

Problems solved by technology

The city refuse contains a plurality of diverse ingredients such as plastic, paper, clothes, dry and fresh plants, wood blocks, glass, ceramics, sand stones and dusts, which is difficult to be treated.

These treatment techniques have some defects that cannot be ignored.

The landfill method needs to occupy the ground and brings pollution to the underground water and air, while the burning method needs to consume energy and its flue gases contains harmful gases and suspended particulates which are difficulty to be treated further.

However, most of the materials in the city refuse have not been effectively utilized currently.

The defects of this board are that the raw materials mainly come from newly exploited minerals so as to consume large resources and hinder the development of recycling economy.

How to reduce the consumption of natural resources and realize the recycling of material resources is an issue before us.

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