Superfine composite mineral admixture grinding aid and preparation method thereof
A technology of composite minerals and admixtures, applied in the field of ultrafine composite mineral admixture grinding aids, can solve the problem of insignificant grinding efficiency of ultrafine composite mineral admixtures, achieve excellent grinding aid effect and reduce agglomeration ” phenomenon, the effect of reducing the specific surface energy
Active Publication Date: 2021-06-22
武汉三源特种建材有限责任公司
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Problems solved by technology
However, this patent is mainly suitable for indoor decoration cement grinding, and the grinding efficiency of ultrafine composite mineral admixtures is not significant
Method used
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Examples
Experimental program
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Effect test
Embodiment 1
[0026] The ultrafine composite mineral admixture grinding aid provided in this example includes raw materials including 30 wt% of modified polyhydric alcohol amine, 20 wt% of molasses, 3 wt% of calcium chloride, and 47 wt% of water.
[0027] The preparation method of the modified polyhydric alcohol amine is as follows: add 25wt% of triethanolamine, 40wt% of maleic anhydride, and 35wt% of polyethylene glycol 200 into a reaction vessel, stir evenly, heat up to 110°C, and keep the temperature for 1h , After cooling, the modified polyhydric alcohol amine is obtained.
Embodiment 2
[0029] The difference between the ultrafine composite mineral admixture grinding aid provided in this example and Example 1 is that its raw materials include 40wt% of modified polyhydric alcohol amine, 20wt% of molasses, 3wt% of calcium chloride, and 37wt% of water.
Embodiment 3
[0031] The difference between the ultrafine composite mineral admixture grinding aid provided in this example and Example 1 is that its raw materials include 20wt% of modified polyhydric alcohol amine, 40wt% of molasses, 3wt% of calcium chloride, and 37wt% of water.
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The invention discloses a superfine composite mineral admixture grinding aid and a preparation method thereof. The superfine composite mineral admixture grinding aid comprises the following raw materials: 20-40wt% of modified polyhydroxy hydramine, 20-40wt% of sugar, 1-10wt% of inorganic salt and the balance of water. The preparation method of the modified polyhydroxy alcohol amine comprises the following steps: adding 20-30wt% of alcohol amine, 30-50wt% of acid anhydride and 20-40wt% of alcohol into a reaction container, uniformly stirring, heating to 105-120 DEG C, carrying out heat preservation reaction for 1-2 hours, and cooling to obtain the modified polyhydroxy alcohol amine. The superfine composite mineral admixture grinding aid is specially researched and developed by taking various properties and characteristics of the superfine composite mineral admixture, such as physical and chemical properties, particle size distribution, components and the like, as research objects, the specific surface energy of superfine admixture particles can be effectively reduced in the grinding aid process, and the agglomeration phenomenon is reduced; not only is an excellent grinding aiding effect achieved, but also an activity enhancing effect is achieved, and the workability, the flowability and the cohesiveness of the admixture during use are improved; the grinding time is shortened by more than 30%, the product fineness D50 is reduced, and the product specific surface area is increased.
Description
technical field [0001] The invention belongs to the field of grades of cement concrete building materials, in particular to an ultrafine composite mineral admixture grinding aid. Background technique [0002] At present, in the field of building materials, especially in the field of cement and concrete, ultrafine composite mineral admixtures have been widely used, and their market demand is also increasing. The powder particle size of the ultra-fine composite mineral admixture currently flowing in the market is extremely fine, and its median diameter D50 is generally less than 6.5 μm. The processing method is generally to increase the specific surface area to 400m 2 / kg of mixed material is ground to a specific surface area of 700-800m 2 / kg, which involves a process of grinding powder to ultrafine powder. [0003] Grinding aid is the most common admixture in powder processing. Its function is to promote the grinding process and improve the grinding efficiency, so as to ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C04B24/38C04B24/26C04B103/52
CPCC04B40/0039C04B2103/52C04B24/122C04B24/38C04B22/124C04B24/04C04B24/26
Inventor 纪宪坤从金瑶涂博王海龙肖蓟彭佳志祁庆龙
Owner 武汉三源特种建材有限责任公司