CN104844086A - Silicon-calcium slag autoclaved brick - Google Patents

Abstract

The invention discloses a silicon-calcium slag autoclaved brick, which is prepared from the following raw materials by weight part: 10-20 of cement, 10-15 of silicon-calcium slag, 2-4 of titanium dioxide, 13-15 of fly ash, 3-5 of calcium carbonate, calcium silicate, 1-3 of expanded perlite powder, 1-2 of alumina, 0.1-0.2 of sodium diacetate, 0.2-0.4 of yttrium nitrate, 0.2-0.4 of calcium nitrate, 0.2-0.4 of N, N-dimethylaniline, 0.1-0.2 of ammonium persulfate, 0.5-0.8 of agar, 0.1-0.2 of polyacrylic acid, 0.2-0.4 of sodium silicate, 0.1-0.2 of sodium alginate, and a proper amount of deionized water.

Description

A kind of ferro-silicon-calcium slag autoclaved brick

Technical field

The present invention relates to autoclaved brick field, is exactly a kind of ferro-silicon-calcium slag autoclaved brick.

Background technology

Autoclaved brick for utilizing flyash, cinder, coal gangue, mine tailings, residue of chemical industry or natural sand, tidal land mud etc. (above raw material one or several) as main raw material, a kind of novel wall material manufactured without high-temperature calcination.

Summary of the invention

The object of the present invention is to provide a kind of ferro-silicon-calcium slag autoclaved brick.

Above-mentioned purpose is realized by following scheme:

A kind of ferro-silicon-calcium slag autoclaved brick, is characterized in that: it is obtained by the raw material of following weight parts:

Cement 10-20, silico-calcium slag 10-15, titanium dioxide 2-4, flyash 13-15, calcium carbonate 3-5, swelling perlite powder 1-3, aluminum oxide 1-2, sodium Diacetate 0.1-0.2, Yttrium trinitrate 0.2-0.4, nitrocalcite 0.2-0.4, DMA 0.2-0.4, ammonium persulphate 0.1-0.2, agar 0.5-0.8, polyacrylic acid 0.1-0.2, water glass 0.2-0.4, sodium alginate 0.1-0.2, deionized water are appropriate.

Described a kind of ferro-silicon-calcium slag autoclaved brick, is characterized in that: preparation method comprises the following steps:

(1) by silico-calcium slag concentration be the solution soaking 3-4 hour of 2-5% water glass, then with deionized water wash to neutral, be ground into Powdered through pulverizer, ferro-silicon-calcium ground-slag end Task-size Controlling is 4-6mm;

(2) titanium dioxide, Yttrium trinitrate, nitrocalcite are joined in appropriate amount of deionized water, stir at 40-45 DEG C, then agar, polyacrylic acid, water glass are added wherein, stir at 35-40 DEG C, obtain gelating soln;

(3) join in gelating soln by ferro-silicon-calcium ground-slag end, ball milling mixes and obtains slurry, adds ammonium persulphate, N, accelerine, reacts 30-60min at 25-35 DEG C, dry 40-70h at 60-80 DEG C, after at 500-550 DEG C, calcine 1-2h, obtain coated powder;

(4) by coated powder and suitable quantity of water and all the other raw material stirring even, shaping, obtained autoclaved brick blank;

(5), after autoclaved brick blank being left standstill 10-14h, put into autoclave and carry out high pressure steam press maintenance, be incubated 6-8h at 190-204 DEG C, under vapor pressure 1-1.2MPa, then go out still, to obtain final product.

Beneficial effect of the present invention is: the present invention passes through coated by titanium dioxide at silico-calcium slag surface, certain sterilization, disinfection can be played to silico-calcium slag, by improving intensity and the anti-freezing property of gained autoclaved brick, make cladding titanium dioxide by gelating soln evenly, gained autoclaved brick folding strength is higher.The use of silico-calcium slag is turned waste into wealth, and the multiple slag that it is rich in can increase the intensity of autoclaved brick.

Embodiment

A kind of ferro-silicon-calcium slag autoclaved brick, it is obtained by the raw material of following weight (kg):

Cement 10, silico-calcium slag 15, titanium dioxide 4, flyash 13, calcium carbonate 3, swelling perlite powder 1, aluminum oxide 1, sodium Diacetate 0.2, Yttrium trinitrate 0.2, nitrocalcite 0.2, DMA 0.4, ammonium persulphate 0.1, agar 0.5, polyacrylic acid 0.1, water glass 0.4, sodium alginate 0.1, deionized water are appropriate.

Described a kind of ferro-silicon-calcium slag autoclaved brick, preparation method comprises the following steps:

(1) by silico-calcium slag concentration be the solution soaking 4 hours of 5% water glass, then with deionized water wash to neutral, be ground into Powdered through pulverizer, ferro-silicon-calcium ground-slag end Task-size Controlling is 4-6mm;

(2) titanium dioxide, Yttrium trinitrate, nitrocalcite are joined in appropriate amount of deionized water, stir at 40 DEG C, then agar, polyacrylic acid, water glass are added wherein, stir at 35 DEG C, obtain gelating soln;

(3) join in gelating soln by ferro-silicon-calcium ground-slag end, ball milling mixes and obtains slurry, adds ammonium persulphate, DMA, reacts 40min at 35 DEG C, dry 50h at 70 DEG C, after at 550 DEG C, calcine 2h, obtain coated powder;

(4) by coated powder and suitable quantity of water and all the other raw material stirring even, shaping, obtained autoclaved brick blank;

(5), after autoclaved brick blank being left standstill 14h, put into autoclave and carry out high pressure steam press maintenance, be incubated 8h at 190-200 DEG C, under vapor pressure 1.2MPa, then go out still, to obtain final product.

50 parts of obtained autoclaved brick censorship tests, draw: mean compressive strength is 15.5Mpa, and average folding strength is 5.3Mpa, after freezing and thawing test, mean compressive strength is 13. 4Mpa, and dry mass loss is 0.4-1. 1%.

Claims (2)

1. a ferro-silicon-calcium slag autoclaved brick, is characterized in that: it is obtained by the raw material of following weight parts:

Cement 10-20, silico-calcium slag 10-15, titanium dioxide 2-4, flyash 13-15, calcium carbonate 3-5, swelling perlite powder 1-3, aluminum oxide 1-2, sodium Diacetate 0.1-0.2, Yttrium trinitrate 0.2-0.4, nitrocalcite 0.2-0.4, DMA 0.2-0.4, ammonium persulphate 0.1-0.2, agar 0.5-0.8, polyacrylic acid 0.1-0.2, water glass 0.2-0.4, sodium alginate 0.1-0.2, deionized water are appropriate.

2. a kind of ferro-silicon-calcium slag autoclaved brick according to claim 1, is characterized in that: preparation method comprises the following steps:

(1) by silico-calcium slag concentration be the solution soaking 3-4 hour of 2-5% water glass, then with deionized water wash to neutral, be ground into Powdered through pulverizer, ferro-silicon-calcium ground-slag end Task-size Controlling is 4-6mm;

(2) titanium dioxide, Yttrium trinitrate, nitrocalcite are joined in appropriate amount of deionized water, stir at 40-45 DEG C, then agar, polyacrylic acid, water glass are added wherein, stir at 35-40 DEG C, obtain gelating soln;

(3) join in gelating soln by ferro-silicon-calcium ground-slag end, ball milling mixes and obtains slurry, adds ammonium persulphate, N, accelerine, reacts 30-60min at 25-35 DEG C, dry 40-70h at 60-80 DEG C, after at 500-550 DEG C, calcine 1-2h, obtain coated powder;

(4) by coated powder and suitable quantity of water and all the other raw material stirring even, shaping, obtained autoclaved brick blank;

(5), after autoclaved brick blank being left standstill 10-14h, put into autoclave and carry out high pressure steam press maintenance, be incubated 6-8h at 190-204 DEG C, under vapor pressure 1-1.2MPa, then go out still, to obtain final product.