CN102009055A

CN102009055A - Composite building decorative material synthesized from red mud/waste plastics

Info

Publication number: CN102009055A
Application number: CN2009101437679A
Authority: CN
Inventors: 王鸿
Original assignee: 王鸿
Current assignee: Hubei Shenglong Recycling Resources Utilization Co.,Ltd.
Priority date: 2009-05-27
Filing date: 2009-05-27
Publication date: 2011-04-13
Anticipated expiration: 2029-05-27
Also published as: CN102009055B

Abstract

The invention relates to a composite building decorative material synthesized from red mud/waste plastics for utilizing waste materials, treating particle contamination, changing waste into valuable, producing a synthetic building material and saving resources for the country. According to the chemical constituent, the mineral composition and the physical properties of waste residue-red mud of an aluminum plant, the compatibility of organic compounds and inorganic compounds in the synthetic process is firstly solved, and the red mud is activated and treated into activated filling by adding additives. An organic long-chain molecular layer is coated on the surface of the composite building decorative material because of physicochemical action so as to make change from hydrophilicity to organophilic property. The invention increases the consumption of the filled red mud and improves the processing performance, the physical performance, the mechanical strength, the photostability and the aging resistance of the synthetic material. Harmful gases are not volatilized in the use of section bars so as to avoid polluting human beings and environment. The composite building decorative material synthesized from the red mud/waste plastics has low cost by reaching waste utilization over 92 percent and is mainly used in doors, windows, sewer pipelines, indoor and outdoor ornament and decoration. Since not wastewater, waste residue or exhaust is discharged in the production process, the environmental protection requirement by is reached.

Description

Red mud/waste or used plastics synthesizes the construction and decoration composite

Technical field:

In the composite building-up process; part is organic and inorganic compound; according to the contained chemical analysis of material; suitably add auxiliary agent; improve the blending of material in the process of dissolving; and stabilize and increase the physical property of material when synthetic; use needs according to synthetic material; add supporting body and reach the requirement of use mechanical performance; when composite was used, different section bars used the field also inequality, requires the performance of section bar and technical indicator also inequality; so the prescription of raw material in building-up process is also inequality, the patent right of claimed formula for raw stock in process of production.

Background technology:

Red mud is the waste residue of alumina producer discharging, because composition complexity, alkalescence are stronger, therefore soil and surrounding enviroment are caused bigger pollution, alumina producer need discharge in the appointed place for this reason, and want concrete management, the producer that China produces aluminium oxide mainly is distributed in ground such as Shandong, Shanxi, Henan, Guizhou, Shanxi Aluminium Plant is one of aluminium production base of China's maximum, when this factory now produces aluminium oxide, the red mud discharge capacity is increased to more than eight kilotons, as far back as the enforcement period of the ninth five-year plan, country just specifies scientific research department to be devoted to the development and use of red mud, turns waste into wealth.Though also obtained some achievements, but the utilization rate of red mud is less, so far also remain a difficult problem, cause the red mud of alumina producer discharging cumulative, take up an area of 1.85 square kilometres, pile up like a mountain, a kind of millstone around one's neck and potential public hazards have been become, in the enforcement period of the ninth five-year plan, through it belongs to a kind of water-fast strong basicity solid matter to the many-sided investigation of red mud, sampling, assay, one ton of aluminium oxide of every production will discharge 1.2-1.5 ton red mud, and the liquid-solid ratio that has just emitted is about 3: 1.

Dried red mud is that a kind of brown powder shape, tasteless, non-volatile its proportion are 2.8-3.1; through assay repeatedly; chemical analysis, physical property and the mineral composition of red mud have been understood; through the years of researches test, the comprehensive utilization of red mud, the whole process of formation large-scale production have been finished in experiment.

Summary of the invention: utilize the synthetic composite of red mud/waste or used plastics, can produce seven series, the building of 20 kinds and finishing material.

1, on an empty stomach flatly open, sliding door and window, section bar;

2, indoor and outdoor decoration material is as skirting, skirting board, floor etc.

3, auxiliary keel is as ceiling joist, partition wall keel, common joists.

4, tubing, following water, rainwater pipe, agricultural all kinds of pipe for sprinkling irrigation.

5, arch form, domatic, greenhouse, green house of vegetables.

6, hot-pressed board, as: kitchen, toilet warterproof, moisture-proof floor, combined hanging cabinet etc.

7, insulating materials, supporting low-voltage electrical apparatus original paper, insulation board etc.

Red mud/waste or used plastics synthetic composite material, its raw material salvage value is more than 92%.

The raw material synthetic ratio is:

1, red mud (〉=100 orders, moisture≤3.5% are pulverized in free from admixture, oven dry) accounts for 60-65%.

2, waste or used plastics (polyethylene, polyvinyl chloride, mix clearly, clean up, broken frustillatum) accounts for 40-35%.

3, strengthen carrier, account for 6-12%.

4, additive, with the modified additive that raw material melt mutually, according to section bar purposes difference, interpolation auxiliary agent kind is also inequality, accounts for 4-12%.

During red mud/waste or used plastics synthetic composite material development test, we entrust composite research institute of Shanghai Communications University, having done red mud/waste or used plastics composite property detection entrusts the Shanghai sanitation epidemic prevention station that red mud/waste or used plastics composite is tested (in December, 95) in July, 96, assay is this material radionuclide, specific activity meets GB6566-86 " radiation protection standards for construction material " and can be extensive use of in building trade, entrust North China Electric Power Research Institute to do the power-frequency withstand voltage test in September, 96, result of the test is for adding power frequency withstand voltage 20KV, 5min does not puncture, and meets the low-voltage insulation requirement.

The composite production process is seen (accompanying drawing 1)

The beneficial effect of the present invention against existing technologies:

1, the synthetic multiple building materials of red mud/waste or used plastics, can make full use of the very big waste residue of aluminium manufacturer's reserves, can reduce environmental pollution, requirement is very big in the plastic products people's lives, because the plastic products loss of properties on aging, product upgrades very fast, so the technics of reclaim of plastic waste amount is big, raw material resources is abundant, and this project is the good approach of twice laid.

2, red mud/waste or used plastics synthetic composite material is compared with existing building, finishing material, and (plastic window, wood plastic product etc.) ageing-resistant performance is better than existing product, and some technical indicator is better than existing product, and this material, acid and alkali-resistance do not absorb water, are not afraid of humidity.Fire prevention, thermal and insulating performance is good, is that a kind of energy-saving and environmental protection can be to curb environmental pollution and turn waste into wealth new way is provided.

3, the application of red mud/waste or used plastics synthetic composite material can progressively replace current material, aluminium alloy, plastic-steel, finishing density board, and particieboards etc. not only can economize on resources, and can also improve serviceability, and the cost cost is low.

4, the production of red mud/waste or used plastics synthetic composite material, as above three strip extrusion production lines, can utilize more than 6000 ton of red mud every year, more than 3000 ton of waste or used plastics, the comprehensive development and utilization of red mud has not only reduced production cost to aluminium manufacturer, but also pollution abatement, improves environment, benefit the nation and the people, and be that country has saved a large amount of resources.

5, this project does not have waste water, waste residue to discharge in actual production process, does not produce and recognizes what pernicious gas, and waste material is recycling after crushed, the production process compliance with environmental protection requirements.

1, set up factory from the nearer area of raw material red mud, reducing the dust diffusion in cost of transportation and the transportation, can packed and transported as red mud far away.

2, buy domestic SJZ65/132YF400 production line, 300T hydraulic press, extrusion profile mould and hot pressing die, can specify mould design, manufacturer supporting.

The specific embodiment:

3, implement streamlined production model, all finish up to the finished product assembling, also can implement granulating working procedure, implement section bar production in other areas in the nearer area of red mud by the raw material preliminary working.

Claims

1. the synthetic raw material of composite are waste or used plastics (polyvinyl chloride, polyethylene) of waste Aluminum slag one red mud and recovery, part is organic and inorganic compound, according to the contained chemical analysis of material, suitably add auxiliary agent, improve the blending of material in the process of dissolving, do not produce other chemical reactions, and stabilize and increase physical property when synthetic, use needs according to synthetic material, add supporting body and reach and use the mechanical performance requirement, during section bar uses non-volatile pernicious gas to human and environment without any pollution.

The raw material synthetic ratio is:

1, red mud (free from admixture, oven dry 〉=100 orders, moisture≤3.5%) accounts for 60-65%.

3, strengthen carrier and account for 6-12%.

4, the modified additive that melts mutually of interpolation and raw material, according to section bar purposes difference, it is also inequality to add the auxiliary agent kind, accounts for 4-12%.

The composite production process is seen (accompanying drawing 1)

When the synthetic construction and decoration composite of red mud/waste or used plastics was used, different section bars used the field also inequality, requires the performance of section bar and technical indicator also inequality, so the prescription of raw material in building-up process is also inequality.

Red mud/waste or used plastics synthesizes the construction and decoration composite, produces the prescription of extruding all kinds of section bar synthetic materials.

Red mud/waste or used plastics synthesizes construction and decoration composite, the prescription of all kinds of section bar synthetic materials of production hot pressing.