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Belite-sulphoaluminate-ferrous aluminate cement and preparation method thereof

A ferroaluminate cement and sulfoaluminate technology, which is applied in cement production and other fields, can solve problems such as high energy consumption, achieve low energy consumption, solve environmental problems, and reduce energy consumption

Active Publication Date: 2015-11-18
天瑞集团萧县水泥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to solve the environmental problems caused by the high energy consumption in the existing cement production process and the accumulation of industrial waste slag

Method used

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  • Belite-sulphoaluminate-ferrous aluminate cement and preparation method thereof
  • Belite-sulphoaluminate-ferrous aluminate cement and preparation method thereof
  • Belite-sulphoaluminate-ferrous aluminate cement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The ratio of raw materials and water consumption designed in this embodiment are as shown in Table 2.

[0023] Table 2: Raw material ratio and water consumption of embodiment 1

[0024] Example 1

Calcium-enriched liquid slag

Carbide slag

red mud

Tailings bauxite

Desulfurization gypsum

water

Mass / g

281

406

10

12

291

350

[0025] The specific implementation steps are as follows:

[0026] 1) Mixing: Weigh the raw materials according to the proportion and put them in the planetary mill, add water, grind for 2 hours, take out and pour the slurry into the mold, demould after molding, and obtain a block sample;

[0027] 2) Hydrothermal synthesis: put the above sample in a digital display constant temperature stirring circulation curing box that has been heated to a set temperature of 60°C, take it out and cool it after constant temperature curing for 9 hours;

[0028] 3) Calcination: After the cooled blo...

Embodiment 2

[0033] The ratio of raw materials and water consumption designed in this embodiment are as shown in Table 4.

[0034] Table 4: Raw material ratio and water consumption of embodiment 2

[0035] Example 2

Calcium-enriched liquid slag

sugar filter mud

red mud

Tailings bauxite

Desulfurization gypsum

water

Mass / g

241

490

9

10

250

338

[0036] The specific implementation steps are as follows:

[0037] 1) Mixing: Weigh the raw materials according to the proportion and put them in the planetary mill, add water, grind for 7 hours, take out and pour the slurry into the mold, demould after molding, and obtain a block sample;

[0038] 2) Hydrothermal synthesis: put the above sample in a digital display constant temperature stirring circulation curing box that has been heated to a set temperature of 90°C, take it out and cool it after constant temperature curing for 8 hours;

[0039] 3) Calcination: After the cooled ...

Embodiment 3

[0044] The ratio of raw materials and water consumption designed in this embodiment are as shown in Table 6.

[0045] Table 6: Raw material ratio and water consumption of embodiment 3

[0046] Example 3

coal gangue

sugar filter mud

red mud

Tailings bauxite

Phosphogypsum

water

Mass / g

139

541

8

53

259

346

[0047] The specific implementation steps are as follows:

[0048] 1) Mixing: Weigh the raw materials according to the proportion and place them in a planetary mill, add water, grind for 10 hours, take out and pour the slurry into the mold, demould after molding, and obtain a block sample;

[0049] 2) Hydrothermal synthesis: Place the above sample in an autoclave that has been heated to a set temperature of 120°C, and take it out to cool after constant temperature curing for 3.5 hours;

[0050]3) Calcination: After the cooled block sample is crushed, it is placed in a high-temperature furnace, calcined a...

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Abstract

The invention discloses belite-sulphoaluminate-ferrous aluminate cement which comprises the following components by mass percent: 38-70% of beta-C2S, 27-37% of C4A3S-(refer to the description) and 3-25% of C4AF. The invention further discloses a preparation method of the belite-sulphoaluminate-ferrous aluminate cement. The preparation method comprises the following steps: with industrial waste residue and industrial gypsum as the raw materials, mixing the raw materials with aluminous corrective addition namely bauxite or tailing bauxite, forming, performing hydrothermal reaction, crushing, calcining and grinding to obtain the belite-sulphoaluminate-ferrous aluminate cement. According to the invention, the low-carbon belite-sulphoaluminate-ferrous aluminate cement is prepared at low temperature; in addition, limestone is not used, so that no carbon dioxide is generated to increase the environmental pressure; moreover, the calcining temperature is low, so that the energy consumption is low, and the preparation method is a low-carbon and environment friendly preparation method.

Description

technical field [0001] The invention relates to the technical field of cement preparation, in particular to belite-sulfoaluminate-iron-aluminate cement and a preparation method thereof. Background technique [0002] Today's world is developing rapidly. While people's material life is being improved, people are more and more concerned about the earth on which we live. As the most widely used building material - cement, it plays an important role in the progress of human society and social and economic development. , also produces high energy and resource consumption and greenhouse gas emissions. Usually, ordinary Portland cement has a calcium oxide content of about 66%, which accounts for 50-70% of alite minerals in clinker, that is, tricalcium silicate. The formation temperature is about 1450°C. The mineral contains calcium oxide up to 73.7%, CaCO 3 Decomposition energy consumption accounts for about 46% of the theoretical heat consumption of clinker, resulting in high ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/32
CPCY02P40/10
Inventor 郭伟王春
Owner 天瑞集团萧县水泥有限公司
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