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Amorphous calcium aluminate and preparation method thereof

A calcium aluminate and amorphous technology, applied in the field of calcium aluminate, can solve the problems of slow melting speed, high energy consumption for refining, and inability to use at the same time.

Active Publication Date: 2012-11-07
ZHENGZHOU SHENGTONG METALLURGY MATERIAL
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Problems solved by technology

Traditional calcium aluminate is generally black or yellow crystalline calcium aluminate, which can be divided into two categories: cement additives and steelmaking, and cannot be used in steelmaking and cement additives at the same time
When ordinary crystalline calcium aluminate is used in the steelmaking industry, there are disadvantages such as high melting point of steel materials, slow melting speed, long refining time and high refining energy consumption.

Method used

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  • Amorphous calcium aluminate and preparation method thereof

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Embodiment

[0015] In this embodiment, first enter step S1100 to select the required raw materials; then enter the selected raw materials into step S1200. In this step, the proportion of raw materials can be adjusted according to the purpose and index. In this embodiment The following raw material ratio is selected: 40-60% CaO, 30-60% Al 2 o 3 , 0.01-1% S, 1-10% SiO 2 , 0.05-3% Fe 2 o 3 , 0.01-5% CaF 2 , 1-10% MgO, 0-3% TiO 2 and 0.01-1% P; then carry out the electric furnace smelting operation of step S1300 on the prepared raw materials, and the smelting temperature reaches 2000 degrees; then proceed to the step of S1400, during which the flow and velocity are adjusted; The key step of the present invention is S1500, starting from the temperature of 2000 degrees, cooling and forming, in this step, adjusting the time for cooling, the cooling process destroys the crystallization conditions of calcium aluminate, thereby forming non-crystalline calcium aluminate; finally The obtained a...

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Abstract

The invention discloses an amorphous calcium aluminate, which can be used in both steelmaking industry and cement additive industry. The invention also discloses a preparation method of the amorphous calcium aluminate. The method comprises the steps of: raw material selection, mixing, smelting by a furnace, tapping, cooling and pelletization. The cooling step is carried out for a while, starting from a certain temperature, to form the amorphous calcium aluminate; and the certain temperature is optimally to be 2000 DEG C.

Description

field of invention [0001] The invention relates to a calcium aluminate, in particular to an amorphous calcium aluminate and a preparation method thereof. Background technique [0002] Calcium aluminate is a newly emerging material in the field of metallurgy and building materials, and its main chemical components are Al2O3 and CaO. Traditional calcium aluminate is generally black or yellow crystalline calcium aluminate, which can be divided into two categories: cement additives and steelmaking, and cannot be used in steelmaking and cement additives at the same time. When ordinary crystalline calcium aluminate is used in the steelmaking industry, there are disadvantages such as high melting point of steel materials, slow melting speed, long refining time and high refining energy consumption. [0003] Therefore, it is necessary to provide a calcium aluminate that can be used in the steelmaking industry, can overcome the shortcomings of ordinary crystalline calcium aluminate i...

Claims

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Application Information

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IPC IPC(8): C01F7/16
Inventor 李荣保
Owner ZHENGZHOU SHENGTONG METALLURGY MATERIAL
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