Method for producing sulfoaluminate cement and iron sulfoaluminate cement

A technology of sulfoaluminate cement and iron sulfoaluminate is applied in the field of production of sulfoaluminate cement and iron sulfoaluminate cement, which can solve the problems of short supply and few manufacturers.

Pending Publication Date: 2020-02-21
陈凤琴
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Rotary kilns have been used for the roasting of clinker for this kind of products, and there are very few manufacturers, so the supply is in short supply.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] During the roasting process of the sulphoaluminate cement clinker and iron sulphoaluminate cement clinker of the present invention, it is necessary to adopt the operating plan of strong wind, rapid burning and shallow dark fire. Other technologies are roughly the same as the shaft kiln roasting Portland cement clinker method. The raw material preparation before roasting and the production of cement products can adopt the existing technology and equipment of shaft kiln cement plant. The chemical composition fluctuation range of sulphoaluminate cement clinker is:

[0008] CaO = 40-50%; Al2O3 = 28-33%; SiO2 = 6-13%; SO3 = 8-12%; there are also a small amount of TiO2, MgO, Fe2O3, etc. The calcination temperature is 1220-1400°C, preferably 1300-1380°C. Such as the use of mineralizers can also reduce the roasting temperature. Fe2O3 content in iron sulfoaluminate clinker is relatively large, Fe2O3=1~13%. Its calcination temperature is low, 1220 ~ 1350 ℃. The method of pro...

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Abstract

The invention provides a method for producing sulfoaluminate cement and iron sulfoaluminate cement; a shaft kiln is used for roasting sulfoaluminate cement clinker and iron sulfoaluminate cement clinker, and a new way is opened up for producing sulfate series and iron sulfoaluminate series special cement for shaft kiln cement plants in China under the condition of basically not increasing devices.

Description

technical field [0001] The invention relates to a production method of sulphoaluminate cement and iron sulphoaluminate cement, in particular to a roasting method of the cement clinker. Background technique [0002] Sulphoaluminate cement is a new cement series, and related standards (such as ZB11006-87, ZBQ11005-87) have been promulgated. Due to the characteristics of rapid hardening, early strength, and no shrinkage, Beijing series cement has become a best-selling product in the domestic market in recent years. Rotary kilns have been used for the roasting of clinker for such products, and there are very few manufacturers, so the supply exceeds demand. [0003] There are more than 5,000 shaft kiln cement factories in my country (including two types of ordinary shaft kiln and mechanical shaft kiln), which mainly produce five series of silicate cement products. In recent years, there have also been researches on the production of special cement such as road cement. Foreign c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/32C04B7/44
CPCC04B7/32C04B7/44C04B7/4469
Inventor 陈凤琴
Owner 陈凤琴
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