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Method for preparing aluminate cement by utilizing high-aluminum pre-melted slag

A technology of aluminate cement and pre-melting slag is applied in the field of cement production, which can solve the problems of large cost input, and achieve the effects of reducing production costs, improving industrialization prospects and realizing economic benefits.

Inactive Publication Date: 2018-04-10
PANZHIHUA GANGCHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the reports, dolomite and magnesia are used as the main raw materials, and the cement containing spinel is prepared by sintering method, and the cost investment is relatively large.

Method used

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  • Method for preparing aluminate cement by utilizing high-aluminum pre-melted slag
  • Method for preparing aluminate cement by utilizing high-aluminum pre-melted slag
  • Method for preparing aluminate cement by utilizing high-aluminum pre-melted slag

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Experimental program
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Embodiment 1

[0023] A preparation method for producing aluminate cement by using high-alumina pre-melted slag. Use high-alumina pre-melted slag as the main raw material, add 5-20% bauxite, 5-10% active lime, let it stand and cool slowly after melting to make clinker, and then crush and grind until the specific surface area is greater than 300m 2 / kg to produce aluminate cement. Its physical and chemical properties are shown in Table 3:

[0024] Table 3 Physical and chemical properties of aluminate cement

[0025]

Embodiment 2

[0027] A preparation method for producing aluminate cement by using high-alumina pre-melted slag. Use high-alumina pre-melted slag as the main raw material, add 10-30% bauxite, 10-30% limestone, melt it and let it cool slowly to make clinker, and then crush and grind until the specific surface area is greater than 300m3 2 / kg to produce aluminate cement. Its physical and chemical properties are shown in Table 3:

[0028] Table 3 Physical and chemical properties of aluminate cement

[0029]

Embodiment 3

[0031] A preparation method for producing aluminate cement by using high-alumina pre-melted slag. Using high-alumina pre-melted slag as the main raw material, adding 20-50% bauxite and 15-25% limestone, melting and standing slowly to make clinker, and then crushing and grinding until the specific surface area is greater than 300m3 2 / kg to produce aluminate cement. Its physical and chemical properties are shown in Table 3:

[0032] Table 3 Physical and chemical properties of aluminate cement

[0033]

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Abstract

The invention discloses a method for preparing aluminate cement by utilizing high-aluminum pre-melted slag. The method takes the high-aluminum pre-melted slag as a main raw material, bauxite or laterite accounting for 0-50% of the total weight of raw materials and limestone or active lime accounting for 0-30% of the total weight of the raw materials are added, melting is performed, slow cooling, quenching or water cooling is performed, and finally crushing grinding is performed until the surface area is greater than 300m<2> / kg. The method provided by the invention prepares the aluminate cementby using tailings as one raw material, wherein the tailings are produced in a smelting process of an alloy prepared by utilizing a melting reduction method, the content of various components as wellas the physical and chemical properties of the obtained aluminate cement can meet the standard requirements, and waste resources are utilized, so that economic benefits are realized, the production costs can be effectively reduced, and the method contributes to environmental protection, and has better industrialization prospects.

Description

technical field [0001] The invention relates to the technical field of cement production, in particular to a method for preparing aluminate cement by using high-alumina pre-melted slag. Background technique [0002] Aluminate cement is the second series of products following the silica salt cement series. According to the provisions of the national standard GB201-1981: the hydraulic cementitious material made of alumina cement clinker with calcium aluminate as the main component after burning the raw materials with appropriate ingredients until they are completely or partially melted, Collectively referred to as aluminate cement. [0003] It first appeared in France in late 1865. It is mainly made of calcium aluminate cement after melting and crushing of alumina and lime. At the end of the 19th century, Britain first issued the patent of "limestone-bauxite" cement. In 1913, Lafayette in France For the first time, the base company carried out commercial production of cement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/32
CPCC04B7/32
Inventor 黎光正陈涛毛朋张远春
Owner PANZHIHUA GANGCHENG GROUP