Phosphogypsum building block and preparation method thereof

Abstract

The invention discloses a phosphogypsum building block. The building block comprises the following raw materials in parts by weight: 50-70 parts of ardealite, 20-30 parts of slag, 10-20 parts of coalash, 5-10 parts of asbestos, 40-60 parts of water, 1-3 parts of a waterproof agent, 2-4 parts of a water reducing agent, 5-6 parts of a dispersing agent and 3-8 parts of a reinforcing agent. The slagis blast furnace cinder, the fly ash contains crystal mineral mullite, alpha-quartz, calcite, anorthite, calcium silicate, hematite and magnetite, the waterproofing agent is a salt waterproofing agent, and the water reducing agent is a fatty acid water reducing agent and a polycarboxylic acid water reducing agent. According to the phosphogypsum block and preparation method thereof, the product isprepared by mixing and stirring slag, coal lime and asbestos, so that compression resistance and firmness of the formed building block are greatly improved, the breaking strength reaches 6-7 MPa, thecompressive strength is 25-230 MPa, the formed building block can bear a certain weight in the actual use process, and the problem that a traditional phosphogypsum building block can only be used as an inner wall is effectively solved.

Description

Technical field

[0001] The invention relates to the technical field of phosphogypsum blocks, in particular to phosphogypsum blocks and a preparation method thereof. Background technique

[0002] The resource utilization of phosphogypsum building materials not only consumes a large amount of phosphogypsum and no new pollutants are generated, but also achieves the purpose of energy saving, soil saving, and waste utilization, which helps solve the problem of phosphogypsum pollution. Because of its low cost, light weight, waterproof, low carbon, environmental protection, energy saving and consumption reduction, simple production, good insulation effect, sturdiness and durability, it is widely used in building partition walls.

[0003] The existing phosphogypsum block has a water absorption rate of about 30%. The high water absorption rate limits the use range of the phosphogypsum block and can only be used for interior walls. In addition, the traditional phosphogypsum is not strong en...

Examples

Embodiment 1

[0032] The present invention relates to a preparation method of phosphogypsum blocks, including the following raw materials:

[0033] 50 parts of phosphogypsum, 20 parts of slag, 10 parts of fly ash, 5 parts of asbestos, 40 parts of water, 1 part of waterproofing agent, 2 parts of water reducing agent, 5 parts of dispersant and 3 parts of reinforcing agent.

[0034] S1, preparation

[0035] Prepare 50 parts of phosphogypsum, 20 parts of slag, 10 parts of fly ash, 5 parts of asbestos, 40 parts of water, 1 part of waterproofing agent, 2 parts of water reducing agent, 5 parts of dispersant and 3 parts of reinforcing agent according to the corresponding number of parts. Good, pass 50 parts of phosphogypsum, 20 parts of slag and 5 parts of asbestos through a pulverizer and pulverize into fine powder.

[0036] S2 puree processing

[0037] Put 50 parts of phosphogypsum, 20 parts of slag, 10 parts of fly ash, 5 parts of asbestos, and 40 parts of water into the mixer for stirring. The stirring ...

Embodiment 2

[0045] The present invention relates to a preparation method of phosphogypsum blocks, including the following raw materials:

[0046] 70 parts of phosphogypsum, 30 parts of slag, 20 parts of fly ash, 10 parts of asbestos, 60 parts of water, 3 parts of waterproofing agent, 4 parts of water reducing agent, 6 parts of dispersant and 8 parts of reinforcing agent.

[0047] S1, preparation

[0048] Prepare 70 parts of phosphogypsum, 30 parts of slag, 20 parts of fly ash, 10 parts of asbestos, 60 parts of water, 3 parts of waterproofing agent, 4 parts of water reducing agent, 6 parts of dispersant and 8 parts of reinforcing agent according to the corresponding number of parts. Good, and 70 parts of phosphogypsum, 30 parts of slag and 20 parts of asbestos are crushed into fine powder through a crusher.

[0049] S2 puree processing

[0050] Put 70 parts of phosphogypsum, 30 parts of slag, 20 parts of fly ash, 10 parts of asbestos, and 60 parts of water into the mixer for stirring. The stirring ...

Embodiment 3

[0058] The present invention relates to a preparation method of phosphogypsum blocks, including the following raw materials:

[0059] 60 parts of phosphogypsum, 25 parts of slag, 15 parts of fly ash, 7 parts of asbestos, 50 parts of water, 2 parts of water repellent, 3 parts of water reducing agent, 5.5 parts of dispersant and 6 parts of reinforcing agent.

[0060] S1, preparation

[0061] Prepare 60 parts of phosphogypsum, 25 parts of slag, 15 parts of fly ash, 7 parts of asbestos, 50 parts of water, 2 parts of waterproofing agent, 3 parts of water reducing agent, 5.5 parts of dispersant and 6 parts of reinforcing agent according to the corresponding number of parts. Good, pass 60 parts of phosphogypsum, 25 parts of slag and 6 parts of asbestos through a pulverizer to pulverize into fine powder.

[0062] S2 puree processing

[0063] Put 60 parts of phosphogypsum, 25 parts of slag, 15 parts of fly ash, 7 parts of asbestos and 50 parts of water into the mixer for stirring. The stirring ...

Technical field

[0001] The invention relates to the technical field of phosphogypsum blocks, in particular to phosphogypsum blocks and a preparation method thereof. Background technique

[0002] The resource utilization of phosphogypsum building materials not only consumes a large amount of phosphogypsum and no new pollutants are generated, but also achieves the purpose of energy saving, soil saving, and waste utilization, which helps solve the problem of phosphogypsum pollution. Because of its low cost, light weight, waterproof, low carbon, environmental protection, energy saving and consumption reduction, simple production, good insulation effect, sturdiness and durability, it is widely used in building partition walls.

[0003] The existing phosphogypsum block has a water absorption rate of about 30%. The high water absorption rate limits the use range of the phosphogypsum block and can only be used for interior walls. In addition, the traditional phosphogypsum is not strong en...

Examples

Embodiment 1

[0032] The present invention relates to a preparation method of phosphogypsum blocks, including the following raw materials:

[0033] 50 parts of phosphogypsum, 20 parts of slag, 10 parts of fly ash, 5 parts of asbestos, 40 parts of water, 1 part of waterproofing agent, 2 parts of water reducing agent, 5 parts of dispersant and 3 parts of reinforcing agent.

[0034] S1, preparation

[0035] Prepare 50 parts of phosphogypsum, 20 parts of slag, 10 parts of fly ash, 5 parts of asbestos, 40 parts of water, 1 part of waterproofing agent, 2 parts of water reducing agent, 5 parts of dispersant and 3 parts of reinforcing agent according to the corresponding number of parts. Good, pass 50 parts of phosphogypsum, 20 parts of slag and 5 parts of asbestos through a pulverizer and pulverize into fine powder.

[0036] S2 puree processing

[0037] Put 50 parts of phosphogypsum, 20 parts of slag, 10 parts of fly ash, 5 parts of asbestos, and 40 parts of water into the mixer for stirring. The stirring ...

Embodiment 2

[0045] The present invention relates to a preparation method of phosphogypsum blocks, including the following raw materials:

[0046] 70 parts of phosphogypsum, 30 parts of slag, 20 parts of fly ash, 10 parts of asbestos, 60 parts of water, 3 parts of waterproofing agent, 4 parts of water reducing agent, 6 parts of dispersant and 8 parts of reinforcing agent.

[0047] S1, preparation

[0048] Prepare 70 parts of phosphogypsum, 30 parts of slag, 20 parts of fly ash, 10 parts of asbestos, 60 parts of water, 3 parts of waterproofing agent, 4 parts of water reducing agent, 6 parts of dispersant and 8 parts of reinforcing agent according to the corresponding number of parts. Good, and 70 parts of phosphogypsum, 30 parts of slag and 20 parts of asbestos are crushed into fine powder through a crusher.

[0049] S2 puree processing

[0050] Put 70 parts of phosphogypsum, 30 parts of slag, 20 parts of fly ash, 10 parts of asbestos, and 60 parts of water into the mixer for stirring. The stirring ...

Embodiment 3

[0058] The present invention relates to a preparation method of phosphogypsum blocks, including the following raw materials:

[0059] 60 parts of phosphogypsum, 25 parts of slag, 15 parts of fly ash, 7 parts of asbestos, 50 parts of water, 2 parts of water repellent, 3 parts of water reducing agent, 5.5 parts of dispersant and 6 parts of reinforcing agent.

[0060] S1, preparation

[0061] Prepare 60 parts of phosphogypsum, 25 parts of slag, 15 parts of fly ash, 7 parts of asbestos, 50 parts of water, 2 parts of waterproofing agent, 3 parts of water reducing agent, 5.5 parts of dispersant and 6 parts of reinforcing agent according to the corresponding number of parts. Good, pass 60 parts of phosphogypsum, 25 parts of slag and 6 parts of asbestos through a pulverizer to pulverize into fine powder.

[0062] S2 puree processing

[0063] Put 60 parts of phosphogypsum, 25 parts of slag, 15 parts of fly ash, 7 parts of asbestos and 50 parts of water into the mixer for stirring. The stirring ...

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