Method for producing seawater corrosion-resistant green ecological cement from stone waste

A technology of stone waste and ecological cement, applied in the direction of cement production, etc., can solve the problems of inconvenient construction and engineering quality control, lack of uniform standards for preparation technology, unfavorable production and construction costs, etc., to achieve good compactness and volume stability, high Effect of resistance to chloride ion diffusion, good economic and social benefits

Active Publication Date: 2015-01-21
广西云燕特种水泥建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems existing in on-site preparation include: the lack of uniform standards for preparation technology, the preparation process is relatively

Method used

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  • Method for producing seawater corrosion-resistant green ecological cement from stone waste
  • Method for producing seawater corrosion-resistant green ecological cement from stone waste

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Embodiment one:

[0040] The green ecological cement with stone waste as raw material, its production method comprises the following steps:

[0041] a. Drying: The stone waste is sent to the vertical dryer by the belt conveyor for drying. After drying, the stone waste is sent to the stone waste warehouse by the elevator for storage, and the water content is less than 2.8%.

[0042] b. Grinding: Grind the dried stone waste obtained in step a with a cement mill so that the passing rate through a 100-mesh sieve reaches more than 95%, and 30 parts of the stone waste obtained in step a and the prepared sulphoaluminate Add 40 parts of cement clinker, 0.03 parts of composite activator and 2 parts of early strength agent into the cement mill in parts by weight, spray atomized water to the inside of the cement mill, and control the temperature of the grinding process at 90-120 ℃, the material from the grinding head of the cement mill, that is, cement, is conveyed into the finis...

Example Embodiment

[0045] Embodiment two:

[0046] The green ecological cement with stone waste as raw material, its production method comprises the following steps:

[0047] a. Drying: The stone waste is sent to the vertical dryer by the belt conveyor for drying. After drying, the stone waste is sent to the stone waste warehouse by the elevator for storage, and the water content is less than 2.8%.

[0048] b. Grinding: Grind the dried stone waste obtained in step a with a cement mill so that the passing rate through a 100-mesh sieve reaches more than 95%, and 35 parts of the stone waste obtained in step a and the prepared sulphoaluminate Add 45 parts of cement clinker, 0.04 parts of composite activator and 3 parts of early strength agent into the cement mill in parts by weight, spray atomized water to the inside of the cement mill, and control the temperature of the grinding process at 90-120 ℃, the material from the grinding head of the cement mill, that is, cement, is conveyed into the finis...

Example Embodiment

[0051] Embodiment three:

[0052] The green ecological cement with stone waste as raw material, its production method comprises the following steps:

[0053] a. Drying: The stone waste is sent to the vertical dryer by the belt conveyor for drying. After drying, the stone waste is sent to the stone waste warehouse by the elevator for storage, and the water content is less than 2.8%.

[0054] b. Grinding: Grind the dried stone waste obtained in step a with a cement mill so that the passing rate through a 100-mesh sieve reaches more than 95%, and 40 parts of the stone waste obtained in step a and the prepared sulphoaluminate 50 parts of cement clinker, 0.05 parts of composite activator and 4 parts of early strength agent are added to the cement mill in parts by weight, and atomized water is sprayed into the interior of the cement mill to control the temperature of the grinding process at 90-120 ℃, the material from the grinding head of the cement mill, that is, cement, is convey...

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Abstract

The invention discloses a method for producing seawater corrosion-resistant green ecological cement from stone waste. The seawater corrosion-resistant green ecological cement comprises the following raw materials in parts by weight: 30-40 parts of stone waste, 40-50 parts of sulphate aluminum cement clinker, 0.03-0.05 part of a complex activator, 2-4 parts of an early-strength agent, 0.3-0.5 part of a water-reducing agent, 0.005-0.007 part of an air entraining agent, and 0.3-0.5 part of a retarder; and the production method comprises the following steps: respectively crushing the stone waste, sulphate aluminum cement clinker, complex activator and early-strength agent, grinding, homogenizing, then mixing and homogenizing according to a proportion, then adding the water-reducing agent, air entraining agent and the retarder, mixing and homogenizing to obtain the seawater corrosion-resistant green ecological cement. The seawater corrosion-resistant green ecological cement has the excellent properties of being high-strength, seawater corrosion-resistant, seawater scouring-resistant and the like besides the performances of common cement, and is especially applicable to underground engineering, ports, wharfs and other engineering corroded by erosion media.

Description

technical field [0001] The invention relates to a production method of cement, in particular to a low-cost, energy-saving and environment-friendly production method of seawater corrosion-resistant green ecological cement. Background technique [0002] The word Cement (cement) is developed from the Latin caementum, which means gravel and flakes. The history of cement can be traced back to the mixture of lime and volcanic ash used by the ancient Romans in construction, which is very similar to modern lime pozzolan cement. The concrete made of cemented crushed stone not only has high strength after hardening, but also can resist the erosion of fresh water or salt water. For a long time, it has been widely used in construction projects as a kind of important cementitious material. In 1756, British engineer J. Smeaton discovered when studying the characteristics of some lime hardening in water: to obtain hydraulic lime, it must be fired with limestone containing clay; The idea...

Claims

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Application Information

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IPC IPC(8): C04B7/24
CPCY02P40/10
Inventor 黄芳龙志谋杨毅龙承战
Owner 广西云燕特种水泥建材有限公司
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