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Method for treating neutralizing slag in building materials

A processing method and building material technology, applied in cement production, etc., can solve problems such as excessive setting time, increased cement water consumption, and affecting the workability of concrete slurry, so as to achieve increased slump, small water demand, and improved water quality. The effect of chemical strength

Pending Publication Date: 2020-08-18
江苏启坤循环经济产业技术开发有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Because this kind of material in cement will increase the water consumption of cement and cause the setting time to be too fast, this makes the application subject to certain restrictions, especially in the cement used to make commercial concrete, when the amount is too high, it will affect Normal working degree of concrete paste

Method used

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  • Method for treating neutralizing slag in building materials
  • Method for treating neutralizing slag in building materials

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Embodiment Construction

[0018] Embodiments are specifically shown in Table 1 and Table 2 and the description of Comparative Table 1.

[0019] The materials stacked into the kiln are hydrated until the crystal water contained is equal to or greater than 8%, and then they are roasted in the kiln. The kiln temperature of the roasted material is 1,600°C for example, 700°C for example 2, and 800°C for example 3.

[0020] Usually, when the material kiln temperature is as low as 600°C, this product will have a greater impact on the product quality, strength, and consistency setting time in the cement produced. When it is higher than 800°C, the product quality will not increase much, so The roasting temperature of this product should be controlled at 700±100°C. The water consumption of this product is relatively small, the setting time of cement or concrete is relatively normal, the consistency of cement is relatively low, and the fluidity of concrete is relatively good.

[0021]

[0022]

[0023] Whe...

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PUM

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Abstract

The invention discloses a method for treating neutralizing slag in building materials. The method comprises the following steps: (1) weighing raw materials, namely neutralizing slag and silica slag; (2) stirring, mixing and forming the neutralizing slag and the silica slag through mixing equipment; (3) roasting; (4) stacking and feeding into a kiln; (5) roasting to obtain a neutralized slag product. The neutralizing slag product prepared by the method is doped into cement, and can generate advantage complementation with Portland cement clinker particles in hydration, so that the hydration strength of the cement is improved, the mineral hydration performance of the cement is improved, the water demand of the cement consistency is not increased, and the setting time is in a normal state; theprepared concrete is small in fluidity loss, the slump is increased, and the working degree of concrete construction is met.

Description

technical field [0001] The invention belongs to the new technology field of building materials, and specifically relates to a treatment method for neutralizing slag used in building materials. The neutralizing slag mentioned here refers to the waste slag produced by rare earth factories from the smelting furnace. The mud-like slag is referred to as neutralization slag by the rare earth factory. In the present invention, the neutralized slag is uniformly mixed and prepared, stirred and formed, naturally cured to a certain degree of hydration, and then roasted to obtain the desired product. The product in the present invention can grind cement together with Portland cement clinker, which can increase cement hydration strength and improve cement hydration performance. This product can be used to grind cement alone or together with mixed materials such as slag and pozzolan. Grinding cement, and the ground cement can be compared with the cement produced by Portland cement clinker ...

Claims

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Application Information

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IPC IPC(8): C04B7/147C04B7/24C04B7/38
CPCC04B7/147C04B7/24C04B7/38Y02P40/10
Inventor 谭纪林张松谭伟谭羽涵曹建明居延娟
Owner 江苏启坤循环经济产业技术开发有限公司
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