Calcium sulphoaluminate-alite composite mineral phase cement clinker and its preparation method

A technology of calcium sulfoaluminate and cement clinker, which is applied in the field of cement materials and can solve problems such as unfavorable large-scale production, unstable clinker mineral composition, and large performance differences.

Inactive Publication Date: 2007-04-25
李金洪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Using the above method, the composition of clinker minerals is unstable, an

Method used

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  • Calcium sulphoaluminate-alite composite mineral phase cement clinker and its preparation method
  • Calcium sulphoaluminate-alite composite mineral phase cement clinker and its preparation method
  • Calcium sulphoaluminate-alite composite mineral phase cement clinker and its preparation method

Examples

Experimental program
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Embodiment 1

[0081] Example 1: design MG=1.05, MS=0.95; ingredients: fly ash 23.91%, bauxite 9.34%, limestone 58.61%, gypsum 7.41%, fluorite 0.74%, firing temperature 1250°C.

Embodiment 2

[0082] Example 2: design MG=1.05, MS=0.95; ingredients: fly ash 23.91%, bauxite 9.34%, limestone 58.61%, gypsum 7.41%, fluorite 0.74%, firing temperature 1300°C.

Embodiment 3

[0083] Example 3: design MG=1.00, MS=1.00; ingredients: fly ash 25.84%, bauxite 7.50%, limestone 58.51%, gypsum 7.41%, fluorite 0.74%, firing temperature 1250°C.

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Abstract

The invention discloses calcium sulphoaluminate-Relit composite mineral phase cement and preparing method, which is characterized by the following: adopting coal ash, alumina, limestone and plaster as raw material and fluorite as mineralizer; designing MG and MS value; introducing new Relit mineral in the preparing course of common aluminium sulfate cement; preparing new clinker of new calcium sulphoaluminate-Relit composite mineral phase cement under 1200-1330 deg.c with 45%-65% C4A3S, 20%-36% C3S and residual C2S.

Description

technical field [0001] The invention belongs to the technical field of cement materials and relates to the preparation of novel calcium sulfoaluminate-alite composite mineral phase cement clinker with fly ash as the main raw material. Background technique [0002] Calcium sulfoaluminate and alite are the main mineral phases of ordinary sulfoaluminate cement and Portland cement, respectively. Calcium sulfoaluminate has good gelling properties and fast hydration speed, and is a typical early-strength mineral, but the later-stage strength growth rate is low; Alite mineral is also a mineral with excellent gelling properties, which is the strength of Portland cement. The main source, but the early strength is low, and the late strength increase rate is high. Therefore, realizing the combination of these two main minerals in sulfoaluminate cement and Portland cement to prepare a new type of calcium sulfoaluminate-alite composite mineral phase cement can further improve the mechan...

Claims

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Application Information

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IPC IPC(8): C04B7/00C04B7/32C04B7/02C04B7/36
CPCC04B7/32
Inventor 李金洪赵宏伟
Owner 李金洪
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