Preparation method of high-strength waterproof color ardealite brick

Abstract

The invention discloses a preparation method of a high-strength waterproof color ardealite brick, which comprises the steps of selecting materials by a conventional method and mixing to obtain a mixed raw material of an ardealite brick; adding pigment and stirring; adding water and stirring; making the mixed slurry into a brick blank by a hydraulic vibration forming machine; curing with saturated steam to obtain a finished product. The color ardealite brick prepared by the method disclosed by the invention has the advantages of uniform tone, low cost, high strength, good water resistance and corrosion resistance and good durability and is suitable for wall construction and pavement construction. In the method disclosed by the invention, by improving the raw materials and method, the problems that the utilization rate of the ardealite brick is low in the prior art, the cost of the color brick is high and the color brick is not strong enough and not durable and the raw materials of the ardealite brick are not easily mixed with the pigment and consequently the tone is not uniform and the strength is not high are solved; meanwhile, the problems of unsatisfactory water resistance and durability of the ardealite brick are solved unexpectedly, a new path of ardealite utilization is created, and the problems of high cost and quality defect of color bricks are solved.

Description

technical field

[0001] The invention relates to the field of building materials, in particular to a method for manufacturing high-strength, water-resistant colored phosphogypsum bricks. Background technique

[0002] Phosphogypsum is a solid waste produced by phosphorus chemical enterprises in the process of phosphoric acid production. It contains harmful impurities such as phosphorus and fluorine. Open-air storage not only occupies a large amount of land, but also easily causes serious pollution to soil and surface water. According to incomplete statistics, the annual discharge of phosphogypsum waste residue in my country has reached more than 40 million tons, while the utilization rate is only below 10%. At present, domestic phosphorus chemical enterprises produce a large amount of phosphogypsum in the production process of wet-process phosphoric acid, which has caused adverse effects on the environment. How to effectively deal with phosphogypsum residue has become a diffi...

Examples

Embodiment 1

[0025] The mixed raw materials of phosphogypsum bricks were obtained by selecting and mixing materials according to conventional methods, and the raw materials were prepared according to the batch test volume of 1000 pieces, 2460 kg of phosphogypsum brick mixed materials, and 24 kg of chromium-based inorganic pigments. Phosphogypsum brick mixture includes conventional phosphogypsum, cementitious material, lime, aggregate.

[0026] Put the mixed raw materials of phosphogypsum bricks that have been aged to meet the requirements into the roller mixer and stir for 2 minutes, then add chromium-based inorganic pigments and stir for 5 minutes; add water and stir for 4 minutes to obtain a mixed slurry with a uniform color; then use a hydraulic vibration molding machine Make the brick body; use saturated steam to cure at 90°C to make the finished color phosphogypsum brick, randomly sample for testing, the results are:

[0027] Compressive strength: 21.3MPa;

[0028] Uniform tone;

[...

Embodiment 2

[0033] According to conventional methods, materials are selected and mixed to obtain the mixed raw materials of phosphogypsum bricks, and the raw materials are prepared according to the batch test volume of 1000 pieces, 2460 kg of phosphogypsum brick mixed materials, and 49 kg of ultramarine blue pigment.

[0034]Put the mixed raw materials of phosphogypsum bricks that have been aged to meet the requirements into the wheel roller mixer and stir for 2 minutes, then add ultramarine blue pigment and stir for 3 minutes; add water and stir for 5 minutes to obtain a mixed slurry with uniform color tone; then use the hydraulic vibration molding machine Make the brick body; use saturated steam to cure at 110°C to make the finished color phosphogypsum brick, randomly sample for testing, the results are:

[0035] Compressive strength: 23.7MPa;

[0036] Uniform tone;

[0037] Softening coefficient: 0.86;

[0038] Carbonization coefficient: 0.89;

[0039] Water Absorption: 13%.

Embodiment 3

[0041] The mixed raw materials of phosphogypsum bricks were obtained by selecting and taking materials according to conventional methods, and the raw materials were prepared according to the batch test volume of 1000 pieces, 2460 kg of phosphogypsum brick mixed materials, and 37 kg of iron red composite inorganic pigments.

[0042] Put the mixed raw materials of phosphogypsum bricks that have been aged to meet the requirements into the roller mixer and stir for 2 minutes, then add iron red composite inorganic pigment and stir for 2 minutes; add water and stir for 5 minutes to obtain a mixed slurry with uniform color tone; then use hydraulic vibration molding Machine-made brick body; use saturated steam to cure at 120°C to make finished colored phosphogypsum bricks, randomly sample for testing, the results are:

[0043] Compressive strength: 25.3MPa;

[0044] Uniform tone;

[0045] Softening coefficient: 0.90;

[0046] Carbonization coefficient: 0.88;

[0047] Water absorpti...

technical field

[0001] The invention relates to the field of building materials, in particular to a method for manufacturing high-strength, water-resistant colored phosphogypsum bricks. Background technique

[0002] Phosphogypsum is a solid waste produced by phosphorus chemical enterprises in the process of phosphoric acid production. It contains harmful impurities such as phosphorus and fluorine. Open-air storage not only occupies a large amount of land, but also easily causes serious pollution to soil and surface water. According to incomplete statistics, the annual discharge of phosphogypsum waste residue in my country has reached more than 40 million tons, while the utilization rate is only below 10%. At present, domestic phosphorus chemical enterprises produce a large amount of phosphogypsum in the production process of wet-process phosphoric acid, which has caused adverse effects on the environment. How to effectively deal with phosphogypsum residue has become a diffi...

Examples

Embodiment 1

[0025] The mixed raw materials of phosphogypsum bricks were obtained by selecting and mixing materials according to conventional methods, and the raw materials were prepared according to the batch test volume of 1000 pieces, 2460 kg of phosphogypsum brick mixed materials, and 24 kg of chromium-based inorganic pigments. Phosphogypsum brick mixture includes conventional phosphogypsum, cementitious material, lime, aggregate.

[0026] Put the mixed raw materials of phosphogypsum bricks that have been aged to meet the requirements into the roller mixer and stir for 2 minutes, then add chromium-based inorganic pigments and stir for 5 minutes; add water and stir for 4 minutes to obtain a mixed slurry with a uniform color; then use a hydraulic vibration molding machine Make the brick body; use saturated steam to cure at 90°C to make the finished color phosphogypsum brick, randomly sample for testing, the results are:

[0027] Compressive strength: 21.3MPa;

[0028] Uniform tone;

[...

Embodiment 2

[0033] According to conventional methods, materials are selected and mixed to obtain the mixed raw materials of phosphogypsum bricks, and the raw materials are prepared according to the batch test volume of 1000 pieces, 2460 kg of phosphogypsum brick mixed materials, and 49 kg of ultramarine blue pigment.

[0034]Put the mixed raw materials of phosphogypsum bricks that have been aged to meet the requirements into the wheel roller mixer and stir for 2 minutes, then add ultramarine blue pigment and stir for 3 minutes; add water and stir for 5 minutes to obtain a mixed slurry with uniform color tone; then use the hydraulic vibration molding machine Make the brick body; use saturated steam to cure at 110°C to make the finished color phosphogypsum brick, randomly sample for testing, the results are:

[0035] Compressive strength: 23.7MPa;

[0036] Uniform tone;

[0037] Softening coefficient: 0.86;

[0038] Carbonization coefficient: 0.89;

[0039] Water Absorption: 13%.

Embodiment 3

[0041] The mixed raw materials of phosphogypsum bricks were obtained by selecting and taking materials according to conventional methods, and the raw materials were prepared according to the batch test volume of 1000 pieces, 2460 kg of phosphogypsum brick mixed materials, and 37 kg of iron red composite inorganic pigments.

[0042] Put the mixed raw materials of phosphogypsum bricks that have been aged to meet the requirements into the roller mixer and stir for 2 minutes, then add iron red composite inorganic pigment and stir for 2 minutes; add water and stir for 5 minutes to obtain a mixed slurry with uniform color tone; then use hydraulic vibration molding Machine-made brick body; use saturated steam to cure at 120°C to make finished colored phosphogypsum bricks, randomly sample for testing, the results are:

[0043] Compressive strength: 25.3MPa;

[0044] Uniform tone;

[0045] Softening coefficient: 0.90;

[0046] Carbonization coefficient: 0.88;

[0047] Water absorpti...

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