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Patent application title:

BUILDING BOARD

Publication number:

US20090169811A1

Publication date:
Application number:

12/118,883

Filed date:

2008-05-12

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.

Inventors:

Assignee:

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Classification:

  1. Fixed constructions
  2. Building

E04C2/04 »  CPC main

Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres

C04B2111/00612 »  CPC further

Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use; Uses not provided for elsewhere in as one or more layers of a layered structure

Y02W30/91 »  CPC further

Technologies for solid waste management; Reuse, recycling or recovery technologies Use of waste materials as fillers for mortars or concrete

Y02W30/91 »  CPC further

Technologies for solid waste management; Reuse, recycling or recovery technologies Use of waste materials as fillers for mortars or concrete

Y10T428/24355 »  CPC further

Stock material or miscellaneous articles; Structurally defined web or sheet [e.g., overall dimension, etc.] Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]

C04B28/32 »  CPC further

Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements Magnesium oxychloride cements, e.g. Sorel cement

C04B14/06 »  CPC further

Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Granular materials, e.g. microballoons; Silica-rich materials; Silicates Quartz; Sand

C04B14/108 »  CPC further

Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Granular materials, e.g. microballoons; Silica-rich materials; Silicates; Clay Shale, slate

C04B14/42 »  CPC further

Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Fibrous materials; Whiskers Glass

C04B18/305 »  CPC further

Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone ; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Waste materials; Refuse; Mixed waste; Waste of undefined composition, Municipal waste

C04B22/064 »  CPC further

Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents; Oxides, Hydroxides of the alkali or alkaline-earth metals of the alkaline-earth metals

C04B22/122 »  CPC further

Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents; Acids or salts thereof containing halogen in the anion Acids

C04B22/149 »  CPC further

Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents; Acids or salts thereof containing sulfur in the anion, e.g. sulfides; Sulfates Iron-sulfates

C04B22/16 »  CPC further

Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents; Acids or salts thereof containing phosphorus in the anion, e.g. phosphates

C04B24/223 »  CPC further

Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers; Sulfur-containing compounds; Sulfonated aromatic compounds; Condensation or polymerisation products thereof Sulfonated melamine-formaldehyde condensation products

C04B24/2623 »  CPC further

Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers; Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds Polyvinylalcohols; Polyvinylacetates

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to a building board.

2. Description of the Related Art

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 different materials, and especially, the materials such as iron, plastic and fiber that can be utilized as industrial raw materials have already been gradually recycled and used. However, most of the materials in the city refuse have not been effectively utilized currently.

The prior building board is mainly made from magnesite cement or silicate cement concrete and is formed after a certain period of curing as the slurry is solidified after being poured into the mould. 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.

SUMMARY OF THE INVENTION

In order to overcome the defects of the prior art, the invention provides a building board that can reuse materials of city refuse, realizing a recycling of material resources.

The technical solution of this invention to achieve above purposes is that: 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.

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.

BRIEF DESCRIPTION OF THE DRAWING

FIG. 1 is the flow diagram of an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Refer to FIG. 1, the invention provides a building board that can realize resource utilization of the city refuse. The main raw material of the base course of the building board comprises the light burning magnesium powder, magnesium chloride solution, mineral powder originated from the city refuse, glass fiber, shale and hydrochloric acid. The main raw material of the surface course comprises the light burning magnesium powder, magnesium chloride solution, quartz powder and hydrochloric acid. The base course is solidified by base course slurry, while the surface course is combined at the outer surface of the base course and is solidified by surface course slurry.

The mixture ratio of raw materials of the base course is that: 200 parts of the light burning magnesium powder, 40 to 75 parts of magnesium chloride solution of 28 to 32 Baume degrees, 1 to 2 parts of hydrochloric acid of 36 to 38%, 80 to 120 parts of mineral powder originated from the city refuse, 20 to 30 parts of glass fiber and 50 to 80 parts of shale.

The mixture ratio of raw materials of the surface course is that: 200 parts of the light burning magnesium powder, 40 to 75 parts of magnesium chloride solution of 28 to 32 Baume degrees, 1 to 2 parts of hydrochloric acid of 36 to 38% and 50 to 100 parts of quartz powder.

The light burning magnesium powder is of a content of over 85%, wherein the magnesium chloride solution is prepared by saltless hexahydrated magnesium or anhydrous magnesium chloride, wherein the hydrochloric acid is of a concentration of 36 to 38%.

The fineness of quartz powder is over 240 meshes the size of mineral powder originated from the city refuse is not larger than 1 mm, the average length of the glass fiber is of 2 to 5 mm, the average size of the shale is 0.5 to 2 mm.

The raw materials of the surface course and the base course further include lauxite, trisodium phosphate, methylnaphthalene sodium dithionite, calcium oxide, polyvinyl acetate and/or ferrous sulfate.

The addition amount of lauxite is 0 to 2 parts, the addition amount of trisodium phosphate is 0 to 0.8, the addition amount of methylnaphthalene sodium dithionite is 0 to 0.8 parts, the addition amount of calcium oxide is 0 to 1.2 parts, the addition amount of polyvinyl acetate is 0 to 0.5 parts, the addition amount of ferrous sulfate is 0 to 1.2 parts.

The mineral powder originated from city refuse is made by processes of primary crushing, separation and secondary crushing, wherein mineral materials are separated from crushed city refuse in the process of separation and then, crushed into fine particles or powder in the process of secondary crushing, forming the mineral powder originated from city refuse.

The primary crushing includes two steps, a jaw crusher is used to crushes large blocks into small blocks in the first step, a roll crusher is used to crush small blocks to small particles.

The ingredient implementing examples of several slurries are given as follows:

Surface course implementing example 1:

Light burning magnesium powder: 200 KG;

Magnesium chloride solution of 28 to 32° C.: 75 KG;

Technical hydrochloric acid with a concentration of 36 to 38%: 1 KG;

Quartz powder: 100 KG;

Trisodium phosphate: 0.8 KG;

Ferrous sulfate: 1.2 KG;

Polyvinyl acetate: 0.5 KG.

Surface course implementing example 2:

Light burning magnesium powder: 200 KG;

Magnesium chloride solution of 28 to 32° C.: 40 KG;

Technical hydrochloric acid with a concentration of 36 to 38%: 2 KG;

Quartz powder: 50 KG;

Lauxite: 2 KG;

Methylnaphthalene sodium dithionite: 0.8 KG;

Calcium oxide: 1.2 KG.

Surface course implementing example 3:

Light burning magnesium powder: 200 KG;

Magnesium chloride solution of 28 to 32° C.: 55 KG;

Technical hydrochloric acid with a concentration of 36 to 38%: 1.5 KG;

Quartz powder: 80 KG;

Lauxite: 1 KG;

Trisodium phosphate: 0.4 KG;

Methylnaphthalene sodium dithionite: 0.4 KG;

Calcium oxide: 0.8 KG;

Polyvinyl acetate: 0.2 KG;

Ferrous sulfate: 0.5 KG.

Surface course implementing example 4:

Light burning magnesium powder: 200 KG;

Magnesium chloride solution of 28 to 32° C.: 45 KG;

Technical hydrochloric acid with a concentration of 36 to 38%: 1.7 KG;

Quartz powder: 60 KG.

Surface course implementing example 5:

Light burning magnesium powder: 200 KG;

Magnesium chloride solution of 28 to 32° C.: 70 KG;

Technical hydrochloric acid with a concentration of 36 to 38%: 2 KG;

Quartz powder: 50 KG;

Lauxite: 1 KG;

Trisodium phosphate: 0.5 KG;

Methylnaphthalene sodium dithionite: 0.4 KG;

Polyvinyl acetate: 0.3 KG;

Ferrous sulfate: 0.2 KG.

Base course implementing example 1:

Light burning magnesium powder: 200 KG;

Magnesium chloride solution of 28 to 32° C.: 55 KG;

Technical hydrochloric acid with a concentration of 36 to 38%: 1.5 KG;

Quartz powder: 60 KG;

Mineral powder originated from city refuse: 120 KG;

Glass fiber: 25 KG;

Shale: 75 KG;

Lauxite: 1 KG;

Trisodium phosphate: 0.4 KG;

Methylnaphthalene sodium dithionite: 0.5 KG;

Polyvinyl acetate: 0.7 KG;

Calcium oxide: 0.8 KG;

Polyvinyl acetate: 0.3 KG.

Base course implementing example 2:

Light burning magnesium powder: 200 KG;

Magnesium chloride solution of 28 to 32° C.: 40 KG;

Technical hydrochloric acid with a concentration of 36 to 38%: 2 KG;

Mineral powder originated from city refuse: 80 KG;

Shale: 50 KG;

Glass fiber: 30 KG.

Base course implementing example 3:

Light burning magnesium powder: 200 KG;

Magnesium chloride solution of 28 to 32° C.: 75 KG;

Technical hydrochloric acid with a concentration of 36 to 38%: 1 KG;

Mineral powder originated from city refuse: 150 KG;

Glass fiber: 20 KG;

Shale: 80 KG;

Lauxite: 2 KG;

Trisodium phosphate: 0.8 KG;

Methylnaphthalene sodium dithionite: 0.8 KG;

Calcium oxide: 1.2 KG;

Polyvinyl acetate: 0.5 KG;

Polyvinyl acetate: 1.2 KG.

Base course implementing example 4:

Light burning magnesium powder: 200 KG;

Magnesium chloride solution of 28 to 32° C.: 75 KG;

Technical hydrochloric acid with a concentration of 36 to 38%: 1 KG;

Mineral powder originated from city refuse: 150 KG;

Glass fiber: 20 KG;

Shale: 50 KG;

Lauxite: 2 KG;

Methylnaphthalene sodium dithionite: 0.8 KG;

Calcium oxide: 1.0 KG;

Polyvinyl acetate: 0.3 KG.

Base course implementing example 5:

Light burning magnesium powder: 200 KG;

Magnesium chloride solution of 28 to 32° C.: 40 KG;

Technical hydrochloric acid with a concentration of 36 to 38%: 1 KG;

Mineral powder originated from city refuse: 150 KG;

Glass fiber: 30 KG;

Shale: 60 KG;

Lauxite: 2 KG;

Trisodium phosphate: 0.8 KG.

The above surface courses and base courses can be combined in any combination.

Claims

What is claimed is:

1. A building board comprising a base course and a surface course, wherein the surface course is combined at an outer surface of the base course, wherein the base course is made from a composition which comprises light burning magnesium powder, magnesium chloride solution, mineral powder originated from city refuse, glass fiber, shale and hydrochloric acid, and wherein the surface course is made from a composition which comprises light burning magnesium powder, magnesium chloride solution, quartz powder and hydrochloric acid.

2. The building board of claim 1, wherein the composition of the base course comprises 200 parts of the light burning magnesium powder, 40 to 75 parts of the magnesium chloride solution, the magnesium chloride solution being 28 to 32 Baume degrees, 1 to 2 parts of the hydrochloric acid, the hydrochloric acid having a concentration of 36 to 38%, 80 to 120 parts of the mineral powder originated from the city refuse, 20 to 30 parts of the glass fiber, and 50 to 80 parts of the shale.

3. The building board of claim 1, wherein the composition of the surface course comprises 200 parts of the light burning magnesium powder, 40 to 75 parts of the magnesium chloride solution, the magnesium chloride solution being 28 to 32 Baume degrees, 1 to 2 parts of the hydrochloric acid, the hydrochloric acid having a concentration of 36 to 38%, and 50 to 100 parts of the quartz powder.

4. The building board of claim 2, wherein the composition of the surface course comprises 200 parts of the light burning magnesium powder, 40 to 75 parts of the magnesium chloride solution, the magnesium chloride solution being 28 to 32 Baume degrees, 1 to 2 parts of the hydrochloric acid, the hydrochloric acid having a concentration of 36 to 38%, and 50 to 100 parts of the quartz powder.

5. The building board of claim 4, wherein the light burning magnesium powder is of a content of over 85%, and wherein the magnesium chloride solution is prepared by saltless hexahydrated magnesium or anhydrous magnesium chloride.

6. The building board of claim 5, wherein a fineness of quartz powder is over 240 meshes, a size of mineral powder originated from the city refuse is not larger than 1 mm, an average length of the glass fiber is 2 to 5 mm, and an average size of the shale is 0.5 to 2 mm.

7. The building board of claim 6, wherein the compositions of the surface course and the base course further include lauxite, trisodium phosphate, methylnaphthalene sodium dithionite, calcium oxide, polyvinyl acetate and/or ferrous sulfate.

8. The building board of claim 7, wherein an amount of the lauxite is 0 to 2 parts, an amount of the trisodium phosphate is 0 to 0.8 parts, an amount of the methylnaphthalene sodium dithionite is 0 to 0.8 parts, an amount of the calcium oxide is 0 to 1.2 parts, an amount of the polyvinyl acetate is 0 to 0.5 parts, and an amount of the ferrous sulfate is 0 to 1. 2 parts.

9. The building board of claim 8, wherein the mineral powder originated from city refuse is made by a process including primary crushing, separation and secondary crushing, wherein mineral materials are separated from crushed city refuse in the separation step and then crushed into fine particles or powder in the secondary crushing step, forming the mineral powder originated from city refuse.

10. The building board of claim 9, wherein the primary crushing includes a first step using a jaw crusher to crushes large blocks into small blocks, and a second step using a roll crusher to crush small blocks to small particles.

11. The building board of claim 1, wherein the compositions of the surface course and the base course further include lauxite, trisodium phosphate, methylnaphthalene sodium dithionite, calcium oxide, polyvinyl acetate and/or ferrous sulfate.

12. The building board of claim 2, wherein the compositions of the surface course and the base course further include lauxite, trisodium phosphate, methylnaphthalene sodium dithionite, calcium oxide, polyvinyl acetate and/or ferrous sulfate.

13. The building board of claim 3, wherein the compositions of the surface course and the base course further include lauxite, trisodium phosphate, methylnaphthalene sodium dithionite, calcium oxide, polyvinyl acetate and/or ferrous sulfate.

14. The building board of claim 1, wherein the mineral powder originated from city refuse is made by a process including primary crushing, separation and secondary crushing, wherein mineral materials are separated from crushed city refuse in the separation step and then crushed into fine particles or powder in the secondary crushing step, forming the mineral powder originated from city refuse.

15. The building board of claim 2, wherein the mineral powder originated from city refuse is made by a process including primary crushing, separation and secondary crushing, wherein mineral materials are separated from crushed city refuse in the separation step and then crushed into fine particles or powder in the secondary crushing step, forming the mineral powder originated from city refuse.

16. The building board of claim 3, wherein the mineral powder originated from city refuse is made by a process including primary crushing, separation and secondary crushing, wherein mineral materials are separated from crushed city refuse in the separation step and then crushed into fine particles or powder in the secondary crushing step, forming the mineral powder originated from city refuse.

17. The building board of claim 4, wherein the mineral powder originated from city refuse is made by a process including primary crushing, separation and secondary crushing, wherein mineral materials are separated from crushed city refuse in the separation step and then crushed into fine particles or powder in the secondary crushing step, forming the mineral powder originated from city refuse.

18. The building board of claim 5, wherein the mineral powder originated from city refuse is made by a process including primary crushing, separation and secondary crushing, wherein mineral materials are separated from crushed city refuse in the separation step and then crushed into fine particles or powder in the secondary crushing step, forming the mineral powder originated from city refuse.

19. The building board of claim 6, wherein the mineral powder originated from city refuse is made by a process including primary crushing, separation and secondary crushing, wherein mineral materials are separated from crushed city refuse in the separation step and then crushed into fine particles or powder in the secondary crushing step, forming the mineral powder originated from city refuse.

20. The building board of claim 7, wherein the mineral powder originated from city refuse is made by a process including primary crushing, separation and secondary crushing, wherein mineral materials are separated from crushed city refuse in the separation step and then crushed into fine particles or powder in the secondary crushing step, forming the mineral powder originated from city refuse.

Resources

Images & Drawings included:

Fig. 01 - BUILDING BOARD
Fig. 01
Fig. 02 - BUILDING BOARD
Fig. 02

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