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Production additive capable of increasing and improving yield and quality of calcium carbonate powder and use method of production additive

A technology of calcium carbonate stone powder and calcium carbonate powder, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problem of high energy consumption, achieve good compatibility, reduce depreciation speed, and save labor costs

Inactive Publication Date: 2015-07-01
LIYANG TONGXIN CEMENT GRINDING AID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Obviously, in the desulfurization process of power plants, the finer the calcium carbonate stone powder, the higher the desulfurization efficiency, but the finer the grinding, the higher the energy consumption.

Method used

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  • Production additive capable of increasing and improving yield and quality of calcium carbonate powder and use method of production additive
  • Production additive capable of increasing and improving yield and quality of calcium carbonate powder and use method of production additive
  • Production additive capable of increasing and improving yield and quality of calcium carbonate powder and use method of production additive

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037] The additives of this example include the following substances in terms of mass fraction:

[0038]

[0039] When this additive is used for grinding calcium carbonate stone powder, the dosage is 1.3 grams of this additive per kilogram of calcium carbonate stone powder.

[0040] After testing, with 325 mesh, the sieving and filtration of calcium carbonate stone powder reaches 86%.

example 2

[0042] This additive includes the following substances in terms of mass fraction:

[0043]

[0044] When the calcium carbonate stone powder is finely ground, the dosage is 1.3 grams of this additive per kilogram of calcium carbonate stone powder.

[0045] After testing, with 325 mesh, the sieving and filtration of calcium carbonate stone powder reaches 89%.

example 3

[0047] This additive includes the following substances in terms of mass fraction:

[0048]

[0049] When this additive is used for grinding calcium carbonate stone powder, the dosage is 1 gram of this additive per kilogram of calcium carbonate stone powder.

[0050] After testing, with 325 mesh, the sieving and filtration of calcium carbonate stone powder reaches 83%.

[0051] The stone powders of Examples 1-3 are used in the FGD system. After testing, the conversion fraction of calcium carbonate stone powder is generally increased by about 17%. It shows that after adopting this additive, the reactivity of calcium carbonate stone powder is greatly improved than that of calcium carbonate stone powder without this additive.

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Abstract

The invention discloses a production additive capable of increasing and improving a yield and quality of calcium carbonate powder. The additive is characterized in that the additive comprises the following materials by mass percent: 27-34% of diethanol, 9-13% of molasses, 8-11% of triethanolamine, 27-38% of crude glycerine and the balance being water. When the additive is used for grinding of the calcium carbonate powder, the use amount of the additive is 1-1.5g additive per kilogram calcium carbonate powder. Judging from the actual use effect, with the adoption of the additive, the power consumption of grinding equipment can be reduced by about 20%; the depreciation speed of the grinding equipment can be reduced by about 13%; in addition, the labor cost can be saved; and the additive particularly deserves to be popularized in production and application processes of the calcium carbonate powder.

Description

technical field [0001] The invention belongs to the technical field of calcium carbonate stone powder (namely limestone powder) production, and in particular relates to an additive for improving the output and quality of calcium carbonate stone powder and its application method. Background technique [0002] In the desulfurization process of power plants, the working principle of limestone desulfurization is to add limestone powder and water to make a slurry as an absorbent and pump it into the absorption tower to fully contact and mix with the flue gas. The air is oxidized to generate calcium sulfate. After the calcium sulfate reaches a certain saturation, it crystallizes to form dihydrate gypsum. The gypsum slurry discharged from the absorption tower is concentrated and dehydrated, and then sent to the gypsum storage bin by a conveyor for stacking. [0003] Most of the current power plants use circulating fluidized bed boilers. The desulfurization of circulating fluidized...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/18
Inventor 李伟李良生
Owner LIYANG TONGXIN CEMENT GRINDING AID
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