Large-doping-amount fly ash cement and preparation method thereof

A high-volume fly ash cement technology is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc. It can solve the problems of large discharge of fly ash and red mud, and achieve a simple and efficient production process. Low cost and good stability

Active Publication Date: 2009-11-18
准格尔旗粉煤灰煤矸石研发中心
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The beneficial effects of the present invention are: not only solving the problem of large discharge of fly ash and red mud, but also providing a kind of powder with large proportion of fly ash, simple production process, low cost, high strength, good stability and less clinker fly ash cement

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  • Large-doping-amount fly ash cement and preparation method thereof
  • Large-doping-amount fly ash cement and preparation method thereof
  • Large-doping-amount fly ash cement and preparation method thereof

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Embodiment Construction

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0026] figure 1 It is a schematic flow chart of the method for preparing large-volume fly ash cement of the present invention. Such as figure 1 As shown, the method includes the following steps:

[0027] Step 10, drying and grinding the fly ash.

[0028] Dry the fly ash until the water content is less than 2%, and finely grind it until the particle size is 0.08 mm and the residue on the square hole sieve is 2% to 3%. The fly ash of the present invention adopts the fly ash discharged from Zhungeer Guohua Power Plant, and its chemical composition is as shown in Table 1.

[0029] Table 1 Chemical composition of fly ash discharged from Zhungeer Guohua Power Plant

[0030] object

Burn vector (%)

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Abstract

The invention relates to a large-doping-amount fly ash cement, including fly ash, red mud, lime, cement clinker, plaster and additive. The invention further provides a preparation method of the large-doping-amount fly ash cement, including the steps of: drying and grinding the fly ash; drying the red mud and mixing and grinding the dried red mud with clinker; pulverizing the lime and the plaster; preparing the additive into solution; mixing the fly ash, red mud, lime, clinker, plaster and additive evenly; and then grinding to obtain the large-doping-amount fly ash cement. The invention not only solves the problem of large emission of fly ash and discharge of red mud, but also can provide a fly ash cement with large fly ash proportion, simple production process, low cost, high strength, good stability and less clinker.

Description

technical field [0001] The invention relates to a cement and a preparation method thereof, in particular to a large-volume fly ash cement and a preparation method thereof. Background technique [0002] Now with the implementation of the sustainable development strategy, the resources, energy and environmental problems of the cement industry have become the main factors restricting its development. Using less Portland cement clinker and using industrial waste as much as possible to produce cement is a topic with environmental protection significance and economic value. [0003] Fly ash is one of the industrial wastes with the largest emission and stacking volume. The utilization rate in my country is less than 40%, and the rest can only be stacked in large-area storage yards, which not only pollutes the environment, but also takes up a lot of waste. land resource. [0004] Red mud is the polluting waste slag discharged when the aluminum industry extracts alumina. Generally, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/26C04B7/36
CPCC04B2103/302C04B2103/0005C04B2103/52C04B28/04Y02W30/91C04B18/0409C04B18/08C04B20/0076C04B22/064C04B22/143C04B24/22C04B24/226C04B24/02C04B24/04C04B24/122
Inventor 张开元
Owner 准格尔旗粉煤灰煤矸石研发中心
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