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Cement clinker and preparation method thereof

A cement clinker and raw material technology, applied in cement production, etc., can solve the problems of insufficient resistance to chloride ion penetration and sulfate erosion, less cementing material consumption, and high maintenance costs, so as to increase resistance to seawater erosion ability, dense hydration slurry, and good impermeability

Inactive Publication Date: 2017-05-31
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the problems of high production cost, poor chloride ion penetration resistance and sulfate erosion resistance in the prior art, and high-mixed mixed materials to solve some corrosion resistance, but the amount of cementitious materials is small and durable. Poor performance, leading to high maintenance costs and other technical problems, to provide a new cement clinker, especially for marine engineering cement clinker, through the selection of raw materials and specific ratio design of raw materials, greatly reduce the production cost of cement clinker, improve Performance of Marine Cement Clinker

Method used

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  • Cement clinker and preparation method thereof
  • Cement clinker and preparation method thereof

Examples

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Embodiment 1

[0024] A cement clinker is composed of the following raw materials by mass percentage: 50% low-grade limestone, 9% sandstone, 34% high-iron bauxite, and 7% desulfurized gypsum.

[0025] The clinker preparation method of the present embodiment is as follows:

[0026] After crushing and grinding the aforementioned raw materials, they are mixed, and then the mixed raw materials are calcined at a temperature of 1100-1350° C. for 10 minutes, and cooled to obtain the clinker.

Embodiment 2

[0028] A preparation method of cement clinker, comprising the following steps:

[0029] a. Ingredients: 49% of low-grade limestone, 11% of shale, 32% of aluminum smelting waste, and 8% of desulfurized gypsum; the ingredients refer to crushing and grinding of each raw material before mixing.

[0030] b. Calcining: calcining the mixed raw meal at a temperature of 1100-1350° C. for 90 minutes, and obtaining the clinker after cooling.

Embodiment 3

[0032] A preparation method of cement clinker, comprising the following steps:

[0033] a. Ingredients: 50% of low-grade limestone, 7% of shale, 25% of high-iron bauxite, and 18% of desulfurization ash; the ingredients refer to crushing and grinding of each raw material before mixing.

[0034] b. Calcining: calcining the mixed raw meal at a temperature of 1100-1350° C. for 50 minutes, and then obtaining the clinker after cooling.

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PUM

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Abstract

The invention discloses a cement clinker and belongs to the technical field of cement clinker production. The clinker is prepared from the following raw materials in percentage by mass: 30 to 60 percent of calcareous materials, 0 to 25 percent of siliceous materials, 10 to 40 percent of aluminum materials, 0 to 10 percent of ferrous materials and 5 to 20 percent of gypsum materials; a mineral composition of the clinker is prepared from 10 to 40 percent of C4AS, 25 to 40 percent of C2S and 10 to 30 percent of C4AF. According to the clinker disclosed by the invention, the iron content of the cement clinker is low, and the seawater erosion resisting ability of the clinker is improved; the cement clinker is especially suitable for marine engineering.

Description

technical field [0001] The invention relates to a cement clinker and a preparation method thereof, belonging to the technical field of cement clinker production. Background technique [0002] In recent years, countries all over the world have attached great importance to the development of marine resources. The construction of offshore projects such as ports, seawalls, coastal protection, cross-sea bridges, and offshore gas stations in China has developed rapidly. As we all know, marine engineering concrete structures have long been chemically corroded by salts in seawater, especially Cl-corrosion, and are also washed by waves. The environment is very harsh, so the durability of marine engineering concrete has been paid more and more attention. At present, ordinary cement and a small amount of sulfate-resistant cement are mainly used in ports, wharves, and marine engineering in my country. This type of cement has poor impermeability and wear resistance, and its seawater ero...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/06C04B7/21C04B7/24
CPCC04B7/06C04B7/21C04B7/243Y02P40/10
Inventor 陈雪梅喻庆华张凌志
Owner JIAHUA SPECIAL CEMENT
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