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Limestone-cement liquid grinding aid and preparation method thereof

A limestone and grinding aid technology, applied in the field of grinding aids, can solve the problems of low output, long cement setting time, low cement strength, etc., and achieve the effects of increasing output, improving cement workability, and improving grindability

Inactive Publication Date: 2016-01-13
NANJING YONGNENG MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose: In order to solve the deficiencies of the prior art and to solve the problems of low output, low cement strength and long cement setting time of ordinary liquid grinding aids in the production process of limestone cement for cement mills, the invention provides a limestone cement Liquid grinding aid and preparation method thereof

Method used

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  • Limestone-cement liquid grinding aid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: a kind of limestone cement liquid grinding aid, composition is as follows:

[0014] polymeric polyol 12%,

[0015] Triisopropanolamine 12%,

[0016] Sodium Hexametaphosphate 12%,

[0017] Sodium sulfamate 8%,

[0018] The balance is water, and the total amount is 100%.

[0019] The preparation method of the limestone cement liquid grinding aid, the steps are: according to the formula ratio, pour a sufficient amount of water into the reaction kettle, heat to 50°C and keep the temperature constant, add sodium hexametaphosphate and stir for 30 minutes, then add sodium sulfamate and stir for 30 minutes, and cool down After reaching room temperature, add polymeric polyol and triisopropanolamine and stir for 20 minutes, and then filter impurities through a 150-mesh stainless steel sieve to obtain product 1.

Embodiment 2 to Embodiment 5

[0021] Repeat the method of Experimental Example 1 by each component content specified in the following table 1, obtain the limestone cement liquid grinding aid product 2 to product 5 of different component content respectively:

[0022] Table 1

[0023] Component (%)

Example 1

Example 2

Example 3

Example 4

Example 5

polymer polyol

12

15

12

12

10

Triisopropanolamine

12

10

13

14

15

Hexametaphosphate

12

15

12

10

10

Sodium sulfamate

8

10

5

8

7

get

Product 1

Product 2

Product 3

Product 4

Product 5

[0024] With the limestone cement liquid grinding aid product that makes among the embodiment 1 to embodiment 5, in addition amount is 0.03% of cement quality, carry out the comparative experiment and the blank experiment of adding limestone cement liquid grinding aid and common grinding aid , the experimental result...

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Abstract

A disclosed limestone-cement liquid grinding aid comprises the following raw materials in percent by mass: 10-15% of polymerized polyol, 10-15% of triisopropanolamine, 10-15% of sodium hexametaphosphate, 5-10% of sodium sulfamate, and the balance water. By using polymerized polyol for replacing triethanolamine with relatively high price, the cement early-stage strength is substantially excited, the grinding efficiency of a grinding machine is improved, and the unit-hour output of the grinding machine is improved. Because of the contained triisopropanolamine, the cement late-stage strength is substantially increased. Sodium hexametaphosphate possesses relatively good dispersing effect, and thus the material grinding easiness is improved. Sodium sulfamate is capable of improving the cement workability and improving cement fluidity.

Description

technical field [0001] The invention relates to a limestone cement liquid grinding aid and a preparation method thereof, belonging to the technical field of grinding aids. Background technique [0002] China is one of the countries rich in limestone mineral resources in the world. In addition to Shanghai, Hong Kong, and Macau, it is distributed in all provinces, municipalities, and autonomous regions. According to the statistics of the Geological Center of the former National Building Materials Bureau, the distribution area of ​​limestone in the country reaches 438,000 Km 2 (not including Tibet and Taiwan), accounting for about 1 / 20 of the country's land area, of which the limestone resources that can be used as cement raw materials account for about 1 / 4 to 1 / 3 of the total resources. In order to meet the needs of environmental protection, ecological balance, prevention of water and soil erosion, scenic tourism, etc., especially with the continuous improvement and implemen...

Claims

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Application Information

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IPC IPC(8): C04B24/16C04B103/52
Inventor 刘国华唐慧慧
Owner NANJING YONGNENG MATERIALS
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