CN102503507A

CN102503507A - Novel preparation method of red mud light-weight wall material

Info

Publication number: CN102503507A
Application number: CN2011103168829A
Authority: CN
Inventors: 唐竹兴; 易维明
Original assignee: Shandong University of Technology
Current assignee: Shandong University of Technology
Priority date: 2011-10-19
Filing date: 2011-10-19
Publication date: 2012-06-20
Anticipated expiration: 2031-10-19
Also published as: CN102503507B

Abstract

The invention discloses a novel preparation method of red mud light-weight wall material, comprising the steps of mixing and grinding 1-10 wt% of waste glass powder, 1-10 wt% of rock wool waste, 1-10 wt% of fly ash, 1-20 wt% of gangue, 1-10 wt% of polished tile waste, 1-10 wt% of waste ceramic tile powder, 94-30 wt% of red mud and 5-10 wt% of additional pulverized coal, and then obtaining uniform mixed powder; baking the mixed powder for 1-4h at 600-1200 degrees centigrade; and cutting to obtain the red mud light-weight wall material. The aperture size of the prepared light-weight wall material is 0.1-3mm; the inner holes and outer holes are distributed uniformly and are closed holes; the heat preservation and shock resistance is far higher than those of aerated concrete block; used raw materials are all industrial wastes, so that the production cost is low and the environment pollution is reduced; and the prepared light-weight wall material has characteristics such as light weight, porous performance, heat insulation, no toxicity, no microbes, tasteless performance and so on, and is convenient to construct and is economic and environment-friendly. Most importantly, the effective solution to the world problem of pollution of industrial waste red mud is found.

Description

The novel preparation method of red mud light wall material

Technical field

The present invention relates to a kind of novel preparation method of red mud light wall material, belong to ceramic foam fabricating technology field.

Background technology

Main at present clay brick, structural clay tile, sand-cement slurry checker brick, the air-entrained concrete building block etc. of using of materials for wall; Weight is big, water-intake rate is high, thermal conductivity is big because above-mentioned materials exists; Make big, poor, the poor seismic behavior of heat-insulating property of buildings load-bearing; And consume a large amount of natural resourcess such as clay, do not meet that the modern architecture material is shockproof, insulation, energy-conservation performance requriements.

Summary of the invention

The purpose of this invention is to provide and a kind ofly can overcome above-mentioned defective, the novel preparation method of light wall material cheaply, its technical scheme is:

With cullet powder 1 ~ 10wt%, rock wool waste material 1 ~ 10 wt%, flyash 1 ~ 10 wt%, coal gangue 1 ~ 20 wt%, polished tile waste material 1 ~ 10 wt%, useless ceramic tile powder 1 ~ 10 wt%, red mud 94 ~ 30 wt%; Add coal dust 5 ~ 10 wt%; Mixed grinding is prepared into uniform mixed powder according to the above ratio; Above-mentioned mixed powder was fired 1 ~ 4 hour 600 ~ 1200 ℃ temperature, after cutting, made the red mud light wall material.

The present invention compared with prior art, its advantage is:

1, the present invention adopt cullet powder, rock wool waste material, coal gangue, red mud,, flyash, polished tile waste material, useless ceramic tile powder is raw material; Foaming forms the closed pores of controllable aperture under coal dust and high temperature action; And be evenly distributed inside and outside the aperture, can be prepared into density is 0.1 ~ 0.6g/cm ³Light heat-insulation wall material, this technology is simple, and the red mud light wall material intensity of production is tall and big in 2Mpa, and thermal conductivity is lower than 0.05W/mk;

2, the main raw material that uses of the present invention is red mud; Because red mud reduces rapidly 1000 ~ 1100 ℃ of melt viscosities; Cause the blowing temperature interval narrow and small, the bubble of formation is prone to assemble the formation air pocket, and the density and the thermal conductivity of goods are bigger; In order to make interval further expansion of red mud blowing temperature that production cost is reduced significantly; The present invention has adopted cullet powder, the rock wool waste material low temperature regulator as the red mud light wall material first, and viscosity modifier that flyash, coal gangue and useless ceramic tile powder are the red mud light wall material reaches and obtains suitable temperature and melt viscosity; Make the blowing temperature interval of red mud expand 600 ~ 1200 ℃ rapidly to, the goods aperture can be controlled at 0.1 ~ 3mm;

3, the present invention's technology foaming efficient is high, and one ton of waste material can be produced 10M ³Light heat-insulation wall material, production cost are about 80 yuan/M ³, also lower by about 40% than the price of air-entrained concrete building block, but the light heat-insulation wall material that the present invention produces and air-entrained concrete building block mutually specific density lower, do not absorb water, its heat-insulating property, anti-seismic performance are higher than air-entrained concrete building block far away;

4, the present invention all uses industrial waste to be raw material, and not only production cost is low, reduces environmental pollution; Turn waste into wealth; And the red mud light wall material of preparation has light weight, porous, characteristic such as heat insulation, nontoxic, aseptic, tasteless, easy construction, economic environmental protection, and waste material can reuse; Be a kind of good New Building Materials, the more important thing is that this world-famous puzzle of pollution for the industrial waste red mud has found terms of settlement effectively.

Embodiment

Embodiment 1

(1) ceramic powder preparation: cullet powder 1wt%, rock wool waste material 1 wt%, flyash 1 wt%, coal gangue 1wt%, polished tile waste material 1 wt%, useless ceramic tile powder 1 %, red mud 94 wt%; Add coal dust 10 wt%, with material: ball is packed into than the ratio that be 1:1 and is done mixed 3 hours formation ceramic powders in the ball mill;

(2) burn till: after placing 1200 ℃ to fire 1 hour above-mentioned ceramic powder, make the red mud light wall material through cutting;

Test used proportion material and be industrial waste;

Through check, the technical indicator of the product that makes is: the high 3Mpa of intensity, and thermal conductivity is lower than 0.04W/mk, the about 0.3mm of mean pore size, volume density is 0.4g/cm ³

Embodiment 2

(1) ceramic powder preparation: cullet powder 4wt%, rock wool waste material 4 wt%, flyash 4 wt%, coal gangue 6wt%, polished tile waste material 4wt%, useless ceramic tile powder 4%, red mud 66 wt%; Add coal dust 8 wt%, with material: ball is packed into than the ratio that be 1:1 and is done mixed 3 hours formation ceramic powders in the ball mill;

(2) burn till: after placing 1100 ℃ to fire 2 hours above-mentioned ceramic powder, make the red mud light wall material through cutting;

Test used proportion material and be industrial waste;

Through check, the technical indicator of the product that makes is: the high 3.5Mpa of intensity, and thermal conductivity is lower than 0.05W/mk, the about 1.5mm of mean pore size, volume density is 0.6g/cm ³

Embodiment 3

(1) ceramic powder preparation: cullet powder 7wt%, rock wool waste material 7 wt%, flyash 7 wt%, coal gangue 12wt%, polished tile waste material 7 wt%, useless ceramic tile powder 7 %, red mud 47 wt%; Add coal dust 6 wt%;, with material: ball is packed into than the ratio that be 1:1 and is done mixed 3 hours formation ceramic powders in the ball mill;

(2) burn till: after placing 800 ℃ to fire 3 hours above-mentioned ceramic powder, make the red mud light wall material through cutting;

Test used proportion material and be industrial waste;

Through check, the technical indicator of the product that makes is: the high 2Mpa of intensity, and thermal conductivity is lower than 0.03W/mk, the about 1.5mm of mean pore size, volume density is 0.2g/cm ³

Embodiment 4

(1) ceramic powder preparation: cullet powder 10wt%, rock wool waste material 10wt%, flyash 10 wt%, coal gangue 20wt%, polished tile waste material 10 wt%, useless ceramic tile powder 10%, red mud 25 wt%; Add coal dust 5wt%, with material: ball is packed into than the ratio that be 1:1 and is done mixed 3 hours formation ceramic powders in the ball mill;

(2) burn till: after placing 600 ℃ to fire 4 hours above-mentioned ceramic powder, make the red mud light wall material through cutting;

Test used proportion material and be industrial waste;

Through check, the technical indicator of the product that makes is: the high 2.5Mpa of intensity, and thermal conductivity is lower than 0.03W/mk, the about 3mm of mean pore size, volume density is 0.3g/cm ³

Claims

1. the novel preparation method of a red mud light wall material; It is characterized in that: with cullet powder 1 ~ 10wt%, rock wool waste material 1 ~ 10 wt%, flyash 1 ~ 10 wt%, coal gangue 1 ~ 20 wt%, polished tile waste material 1 ~ 10 wt%, useless ceramic tile powder 1 ~ 10 wt%, red mud 94 ~ 30 wt%; Add coal dust 5 ~ 10 wt%; Mixed grinding is prepared into uniform mixed powder according to the above ratio; Above-mentioned mixed powder was fired 1 ~ 4 hour 600 ~ 1200 ℃ temperature, after cutting, made the red mud light wall material.