A method for producing aluminate high-temperature binder from metal calcium slag

A high-temperature binder and metal calcium technology, which is applied in the field of aluminate high-temperature binders produced from metal calcium slag, can solve problems such as ignorance of the application value of calcium slag, environmental pollution, etc., and achieve saving of bauxite resources, limestone resources, The effect of saving a lot of energy

Active Publication Date: 2021-08-17
郑州海迈高温材料研究院有限公司
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Problems solved by technology

Since 2003, my country has carried out large-scale production of calcium metal. At the beginning, a large amount of calcium slag was piled up on the roadside or filled in ditches as garbage, causing serious environmental pollution.
In the later period, some people replaced part of the bauxite with calcium slag, and melted it with limestone or sintered at high temperature to produce pre-melted slag, which was used as an auxiliary material for steelmaking and metallurgy, and relieved the environmental pressure caused by calcium slag. However, some units still do not understand calcium slag. The application value is still treated as garbage, causing environmental pollution

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  • A method for producing aluminate high-temperature binder from metal calcium slag
  • A method for producing aluminate high-temperature binder from metal calcium slag
  • A method for producing aluminate high-temperature binder from metal calcium slag

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Embodiment Construction

[0023] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0024] The invention provides a method for producing aluminate high-temperature binder from metal calcium slag.

[0025] Such as figure 1 , figure 2 with image 3 As shown, the method firstly crushes calcium metal slag raw materials of different particle sizes, then adds alumina powder to the crushed calcium metal slag according to the grade of the high-temperature binder, and finally processes it through electrofusion or sintering process , after cooling, the high-temperature binder is obtained by crushing and grinding.

[0026] The main crystal phases of the high-temperature bond prepared by this method are calcium aluminate (CA) and calcium dialuminate (CA) 2 ), belongs to the high-temperature phase, and can be used as a high-temperature binder. ...

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Abstract

The invention provides a method for producing aluminate high-temperature binder from metal calcium slag, which belongs to the technical field of new material preparation. In this method, calcium slag with different particle sizes of 0-50 mm is pulverized, and then mixed with a certain proportion of alumina powder according to the grade of the high-temperature binder. After electromelting or sintering, the high-temperature binder is obtained by cooling, crushing and grinding. The metal calcium slag can be completely applied in this method, replacing nearly 50% of the alumina powder and all the limestone, which not only realizes the comprehensive utilization of waste, but also saves national mine resources.

Description

technical field [0001] The invention relates to the technical field of new material preparation, in particular to a method for producing an aluminate high-temperature binder from metal calcium slag. Background technique [0002] At present, my country's mineral resources have been exploited in large quantities for many years. The shortage of natural resources and mineral resources has become a "bottleneck" restricting sustainable development, and a large amount of industrial tailings are piled up in the open air, which not only causes serious waste of resources, but also pollutes the environment. In the face of the severe situation of rapid economic growth, shortage of resources and energy, and deterioration of the ecological environment, the efficient and comprehensive utilization of industrial waste residues is an important way to solve the shortage of resources in our country. [0003] Calcium metal is the main raw material of the metallurgical industry, with an annual ou...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/63C04B35/66
CPCC04B35/6303C04B35/66
Inventor 靳亲国王勇张梅靳斐
Owner 郑州海迈高温材料研究院有限公司
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