NID desulfurized fly ash wet-grinding modified mineral powder and preparation method thereof

A technology for desulfurization ash and mineral powder, which is applied in the field of NID desulfurization ash wet grinding modified mineral powder and its preparation, can solve the problems of decreased strength of slag powder and cannot be directly applied, and achieves improved mechanical properties, high value-added utilization, The effect of reducing pollution

Active Publication Date: 2014-08-06
宝武环科武汉金属资源有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, desulfurization ash is usually directly mixed with slag powder, but this will lead to a rapid decline in the strength of slag powder, which cannot be used directly. This has become an urgent problem for major iron and steel enterprises to solve

Method used

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  • NID desulfurized fly ash wet-grinding modified mineral powder and preparation method thereof
  • NID desulfurized fly ash wet-grinding modified mineral powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1 The weight of each component in NID desulfurized ash wet milled modified slag powder is: 1 ton of desulfurized ash, 99 tons of slag powder, and 7 tons of water.

[0014] Embodiment 1 NID desulfurization ash wet grinding modified mineral powder preparation method, comprising the following steps:

[0015] 1) Weigh the desulfurization ash and slag powder respectively according to the ratio;

[0016] 2) Mix the weighed desulfurization ash and slag powder evenly, and add the water in the stated proportion and mix evenly;

[0017] 3) Grind the mixture homogeneously mixed in the previous step for 22 minutes in a mill to obtain the desulfurized ash wet-milled modified mineral powder.

[0018] By comparing Table 1 and Table 2, it can be seen that the desulfurization ash wet-milled modified ore powder (Example 1 in Table 1) using the formula of this example is comparable to the desulfurization ash ore powder (original 1 in Table 2) mixed with the same quality of the pr...

Embodiment 2

[0020] Example 2 The weight of each component in NID desulfurized ash wet milled modified slag powder is: 2 tons of desulfurized ash, 98 tons of slag powder, and 9 tons of water.

[0021] Embodiment 2 The preparation method of NID desulfurization ash wet grinding modified mineral powder, comprising the following steps:

[0022] 1) Weigh the desulfurization ash and slag powder respectively according to the ratio;

[0023] 2) Mix the weighed desulfurization ash and slag powder evenly, and add the water in the stated proportion and mix evenly;

[0024] 3) Grind the mixture homogeneously mixed in the previous step for 18 minutes in a mill to obtain wet-milled modified mineral powder of desulfurization ash.

[0025] By comparing Table 1 and Table 2, it can be seen that the desulfurization ash wet-milled modified slag powder (Example 2 in Table 1) using the formula of this example is comparable to the desulfurization ash slag powder mixed with the same quality of the prior art (For...

Embodiment 3

[0027] Example 3 The weight of each component in NID desulfurized ash wet milled modified slag powder is: 3 tons of desulfurized ash, 97 tons of slag powder, and 8 tons of water.

[0028] Embodiment 3 NID desulfurization ash wet grinding modified mineral powder preparation method, comprising the following steps:

[0029] 1) Weigh the desulfurization ash and slag powder respectively according to the ratio;

[0030] 2) Mix the weighed desulfurization ash and slag powder evenly, and add the water in the stated proportion and mix evenly;

[0031] 3) Grind the mixture homogeneously mixed in the previous step for 20 minutes in a mill to obtain the desulfurized ash wet-milled modified mineral powder.

[0032] By comparing Table 1 and Table 2, it can be seen that the desulfurization ash wet-milled modified slag powder (Example 3 in Table 1) using the formula of this example is comparable to the desulfurization ash slag powder mixed with the same quality of the prior art (Form 3 in Ta...

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Abstract

The invention discloses an NID desulfurized fly ash wet-grinding modified mineral powder which comprises the following components by weight percent: 0.917-3.738% of desulfurized fly ash, 88.073-92.523% of slag powder, and 6.542-8.257% of water. The invention further discloses a preparation method of the NID desulfurized fly ash wet-grinding modified mineral powder. The preparation method comprises the following steps: (1), weighing the desulfurized fly ash and the slag powder according to the weight percentage respectively; (2), uniformly mixing the weighed desulfurized fly ash and the slag powder, uniformly adding the water with the weight percentage into the mixture, and uniformly mixing; 3), powder-grinding the mixture uniformly mixed in the step (2) in a grinding machine for 18-22 min, so as to obtain the desulfurized fly ash wet-grinding modified mineral powder. According to the invention, the production technology is simple, the strength after the mixing between the desulfurized fly ash and the slag powder, the additional value is high, the environmental pollution is small, and the modified mineral powder and the preparation method can be widely applied to the field of solid waste resource recycling in the iron and steel industry.

Description

technical field [0001] The invention relates to the field of recycling of solid waste resources in the iron and steel industry, in particular to NID desulfurization ash wet-milled modified mineral powder and a preparation method thereof. Background technique [0002] Desulfurization ash is a desulfurization agent that absorbs SO in sintering flue gas 2 A kind of industrial solid waste formed later, its main components include CaSO 3 1 / 2H 2 O22~30wt%, CaSO 4 2H 2 O21~25wt%, Ca(OH) 2 26~35wt%, CaCO 3 18-258wt%, due to the lack of reasonable utilization methods, most of them are stored after adding water, which not only occupies a large amount of land, but also has a negative impact on the environment. The state requires that during the 12th Five-Year Plan period, all iron and steel enterprises must complete the desulfurization transformation of sintering flue gas, but how to deal with the desulfurization products has become an ensuing problem. At present, desulfurizatio...

Claims

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Application Information

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IPC IPC(8): C04B7/21
CPCY02P40/10
Inventor 甘万贵汪平刚华洲连唐岚李亚光焦立新万利赵青林
Owner 宝武环科武汉金属资源有限责任公司
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