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Concrete expanding clinker, expanding agent and preparation methods thereof

A technology for expanding clinker and concrete, which is applied in the field of concrete expanding clinker, expansion agent and its preparation, can solve the problems that have not been reported, and achieve the effect of realizing reuse, realizing reuse, and increasing the expansion rate

Inactive Publication Date: 2019-06-21
HUZHOU FENGSHENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to make full use of the active ingredients of a large amount of fluorogypsum, aluminum slag, and fly ash that are by-products in the industrial production process has become a technical problem to be solved urgently, but there is no good solution in the existing technology
Especially about the comprehensive utilization of sulfur and aluminum mineral resources rich in fluorogypsum, aluminum slag, fly ash, the method of producing concrete expansion clinker and concrete expansion agent has not been reported

Method used

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  • Concrete expanding clinker, expanding agent and preparation methods thereof
  • Concrete expanding clinker, expanding agent and preparation methods thereof
  • Concrete expanding clinker, expanding agent and preparation methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The concrete expansion clinker of embodiment 1 of the present invention is made up of following raw material by weight part:

[0033]

[0034] The preparation method of the present embodiment 1 concrete expansion clinker comprises the steps:

[0035] ⑴ First mix 80 parts of limestone, 10 parts of fluorine gypsum, 4 parts of magnesite, 4 parts of aluminum slag, and 2 parts of steel slag in proportion, then send them into a ball mill for grinding until the sieve residue of 0.08mm is ≤ 30%, and the mixed material is obtained after grinding , and send it to the raw meal storehouse for homogenization and storage;

[0036] (2) The raw meal powder in the raw meal storehouse is transported to the kiln tail steady-flow feeding small warehouse through the storehouse bottom unloading device, the air conveying chute and the bucket elevator, and is fed into the rotary kiln for calcination after being measured by the solid flow meter. The calcination temperature The temperature i...

Embodiment 2

[0050] Embodiment 2 of the present invention The concrete expansion clinker consists of the following raw materials in parts by weight:

[0051]

[0052] The preparation method of the present embodiment 2 concrete expansion clinker comprises the steps:

[0053] ⑴ First mix 75 parts of limestone, 15 parts of fluorine gypsum, 4 parts of magnesite, 4 parts of aluminum slag, and 2 parts of steel slag in proportion, and then send them into a ball mill for grinding until the sieve residue of 0.08mm is ≤30%. After grinding, the mixed material is obtained , and send it to the raw meal storehouse for homogenization and storage;

[0054] (2) The raw meal powder in the raw meal storehouse is transported to the kiln tail steady-flow feeding small warehouse through the storehouse bottom unloading device, the air conveying chute and the bucket elevator, and is fed into the rotary kiln for calcination after being measured by the solid flow meter. The calcination temperature The temperatu...

Embodiment 3

[0067] Embodiment 3 of the present invention Concrete expansion clinker is made up of following raw material by weight part:

[0068]

[0069]

[0070] The preparation method of present embodiment 3 concrete expansion clinker comprises the steps:

[0071] ⑴ First mix 70 parts of limestone, 18 parts of fluorine gypsum, 5 parts of magnesite, 5 parts of aluminum slag, and 2 parts of steel slag in proportion, then send them to the ball mill for grinding until the sieve residue of 0.08mm is ≤ 30%, and the mixed material is obtained after grinding , and send it to the raw meal storehouse for homogenization and storage;

[0072] (2) The raw meal powder in the raw meal storehouse is transported to the kiln tail steady-flow feeding small chamber through the storehouse bottom unloading device, the air conveying chute, and the bucket elevator, and is fed into the rotary kiln for calcination after being measured by the solid flow meter. The temperature is 1250°C-1400°C, and the cal...

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Abstract

The invention relates to concrete expanding clinker, an expanding agent and preparation methods thereof. The concrete expanding clinker is prepared from limestone, fluorgypsum, magnesite, waste aluminum slag and steel slag as raw materials by mixing and calcining. The expanding agent is prepared from the concrete expanding clinker, a secondarily compounded fluorgypsum sulfur material, a fly ash aluminum material and a limestone admixture by proportional grinding and homogenization. The concrete expanding agent can completely meet the standard requirements of types I and II in GB / T23439-2009, and a brand-new technical development direction for producing the expanding agent from industrial waste as the main material is opened up by the concrete expanding agent.

Description

technical field [0001] The invention relates to a concrete expansion clinker, an expansion agent and a preparation method thereof, which are mainly used in the technical field of building materials. Background technique [0002] Cement concrete is a kind of hydraulic cementitious material. During its hydration and hardening process, the volume will shrink. The shrinkage under the constraints will generate shrinkage stress inside the structure. When the stress exceeds the tensile strength of the concrete, it will cause the concrete to crack and form Shrinkage cracks. In order to suppress the cracking of cement concrete caused by shrinkage, the most economical and feasible method is to add an expansion agent to compensate for the shrinkage of the concrete by the expansion generated by the hydration of the expansion agent. According to the type of expansion source, the expansion agent can be divided into ettringite type, calcium oxide type and magnesium oxide type. At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/14
Inventor 鲍茂林柴东先
Owner HUZHOU FENGSHENG NEW MATERIAL
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