阅读说明：本技术 一种己内酰胺在水泥助磨剂中的应用方法 (Application method of caprolactam in cement grinding aid ) 是由 张天喜 张建 陈春林 胡忠山 于 2020-06-01 设计创作，主要内容包括：本发明公开了一种己内酰胺在水泥助磨剂中的应用方法。本发明中,将已内酰胺原料、聚甘油原料、水按一定比例配制组成水泥助磨剂,三者的重量百分含量为：已内酰胺原料5-50％,聚甘油原料5-50％,水0-50％。试验证实,将已内酰胺原料、聚甘油原料用作为助磨剂,具有助磨效果好,提产幅度大,水泥流动性改善的特点,尤其是后期强度增幅明显,优于现有的三乙醇胺类助磨剂,同时采用本发明水泥助磨剂粉磨的水泥在水泥的凝结时间、水泥砂浆的流动度、水泥的标准稠度需水量,能够适应不同的水泥助磨剂用户,也对提高建筑物的耐久性即寿命具有重要意义。(The invention discloses an application method of caprolactam in a cement grinding aid. In the invention, a cement grinding aid is prepared by mixing a caprolactam raw material, a polyglycerol raw material and water according to a certain proportion, wherein the weight percentages of the caprolactam raw material, the polyglycerol raw material and the water are as follows: 5-50% of caprolactam raw material, 5-50% of polyglycerol raw material and 0-50% of water. Tests prove that the caprolactam raw material and the polyglycerol raw material are used as grinding aids, so that the grinding aid has the characteristics of good grinding aid effect, large yield increasing range and improved cement fluidity, particularly has obvious later strength increase, is superior to the existing triethanolamine grinding aids, and meanwhile, cement ground by the cement grinding aid disclosed by the invention can adapt to different cement grinding aid users in the setting time of the cement, the fluidity of cement mortar and the water requirement for standard consistency of the cement, and has important significance for improving the durability of buildings, namely the service life.)

1. An application method of caprolactam in cement grinding aids is characterized in that: the application method of the caprolactam in the cement grinding aid needs to use the following properties and raw materials: the method comprises the following steps of preparing a caprolactam raw material, a polyglycerol raw material, a filtering device, an electronic weighing device, purified water, a stirring barrel, a stirrer, a test mill, cement clinker and a mixed material.

2. The method of using caprolactam as a cement grinding aid of claim 1, wherein: the application method of the caprolactam in the cement grinding aid comprises the following steps:

s1, taking a caprolactam raw material and a polyglycerol raw material, switching on a power supply of a filtering device, then opening a feed inlet of the filtering device, putting the caprolactam raw material into the feed inlet, opening a switch of the filtering device, starting filtering the caprolactam raw material by the filtering device, connecting the filtered caprolactam raw material by a container after filtering, and placing aside for later use;

s2, cleaning a feed inlet of the filtering device, putting the polyglycerol raw material into the feed inlet, opening a switch of the filtering device, starting filtering the polyglycerol raw material by the filtering device, connecting the filtered polyglycerol raw material by a container after the filtering is finished, and placing the polyglycerol raw material aside for later use;

s3, taking out the first electronic scale, cleaning a weighing platform of the first electronic scale, and then starting weighing, wherein the weighing can be carried out according to the weight percentage: 5-50% of caprolactam raw material, 5-50% of polyglycerol raw material and 0-50% of purified water;

s4, taking the stirring barrel, cleaning the inside of the stirring barrel, drying the inside of the stirring barrel after cleaning, and then putting the weighed caprolactam raw material, polyglycerol raw material and purified water into the inside of the stirring barrel;

s5, taking a stirrer, switching on a power supply, and then stirring and mixing the raw materials mixed in the stirring barrel by using the handheld stirrer, and fully mixing to obtain a first cement grinding aid;

s6, taking a certain amount of cement clinker and mixed materials, adding three ten-thousandth grinding aid into the cement clinker and the mixed materials, uniformly mixing, adding the mixed raw materials into a small test mill, and grinding for 25 minutes;

s7, preparing a cement clinker and a mixed material without grinding aid as blank samples, measuring the fineness of the raw materials mixed with the grinding aid, preparing test modules, and measuring the strength after curing for 3 days, 28 days and 90 days.

3. The method of using caprolactam as a cement grinding aid of claim 1, wherein: the mass ratio of the cement clinker and the mixed material in the step S6 is 70% of the cement clinker, 10% of slag, 10% of fly ash, 4% of gypsum and 6% of limestone.

4. The method of using caprolactam as a cement grinding aid of claim 1, wherein: the caprolactam raw material in the step S1 is an important organic chemical raw material, is a monomer for producing nylon-6 fiber (namely nylon) and nylon-6 engineering plastics, and has wide application in a plurality of fields such as automobiles, textiles, electronics, machinery and the like.

5. The method of using caprolactam as a cement grinding aid of claim 1, wherein: the step S2 is to polymerize glycerol, wherein glycerol molecules themselves can be polymerized with each other to form polymers under appropriate conditions.

6. The method of using caprolactam as a cement grinding aid of claim 1, wherein: in the step S6, before use, the cement clinker and the admixture are filtered to remove impurities with large particles inside.

Technical Field

The invention belongs to the technical field of cement application, and particularly relates to an application method of caprolactam in a cement grinding aid.

Background

The cement grinding aid is a chemical additive for improving the grinding effect and performance of cement.

The cement grinding aid is added in the cement grinding process, so that the electrostatic adsorption ball-wrapping phenomenon formed in the grinding process can be greatly reduced, the re-agglomeration tendency of ultrafine particles formed in the grinding process can be reduced, and the cement machine-hour yield can be remarkably improved. The cement grinding aid is added in the cement grinding process, so that the distribution of cement particles can be improved, and the hydration power can be excited, so that the cement strength in each age can be improved. The cement produced by using the grinding aid has a lower compaction and coalescence tendency, so that the cement is convenient to load and unload, and the wall-hanging phenomenon of a cement warehouse can be reduced.

However, the traditional grinding aid has high production cost, the grinding aid effect and the production efficiency of cement grinding are low, the quality of cement is reduced, and the production cost is increased.

Disclosure of Invention

The invention aims to: in order to solve the problems, the application method of caprolactam in the cement grinding aid is provided.

The technical scheme adopted by the invention is as follows: the application method of caprolactam in the cement grinding aid requires the following properties and raw materials: the method comprises the following steps of preparing a caprolactam raw material, a polyglycerol raw material, a filtering device, an electronic weighing device, purified water, a stirring barrel, a stirrer, a test mill, cement clinker and a mixed material.

In a preferred embodiment, the method for applying caprolactam in the cement grinding aid comprises the following steps:

s1, taking a caprolactam raw material and a polyglycerol raw material, switching on a power supply of a filtering device, then opening a feed inlet of the filtering device, putting the caprolactam raw material into the feed inlet, opening a switch of the filtering device, starting filtering the caprolactam raw material by the filtering device, connecting the filtered caprolactam raw material by a container after filtering, and placing aside for later use;

s2, cleaning a feed inlet of the filtering device, putting the polyglycerol raw material into the feed inlet, opening a switch of the filtering device, starting filtering the polyglycerol raw material by the filtering device, connecting the filtered polyglycerol raw material by a container after the filtering is finished, and placing the polyglycerol raw material aside for later use;

s3, taking out the first electronic scale, cleaning a weighing platform of the first electronic scale, and then starting weighing, wherein the weighing can be carried out according to the weight percentage: 5-50% of caprolactam raw material, 5-50% of polyglycerol raw material and 0-50% of purified water;

s4, taking the stirring barrel, cleaning the inside of the stirring barrel, drying the inside of the stirring barrel after cleaning, and then putting the weighed caprolactam raw material, polyglycerol raw material and purified water into the inside of the stirring barrel;

s5, taking a stirrer, switching on a power supply, and then stirring and mixing the raw materials mixed in the stirring barrel by using the handheld stirrer, and fully mixing to obtain a first cement grinding aid;

s6, taking a certain amount of cement clinker and mixed materials, adding three ten-thousandth grinding aid into the cement clinker and the mixed materials, uniformly mixing, adding the mixed raw materials into a small test mill, and grinding for 25 minutes;

s7, preparing a cement clinker and a mixed material without grinding aid as blank samples, measuring the fineness of the raw materials mixed with the grinding aid, preparing test modules, and measuring the strength after curing for 3 days, 28 days and 90 days.

In a preferred embodiment, the mass ratio of the cement clinker and the admixture in step S6 is 70% of the cement clinker, 10% of the slag, 10% of the fly ash, 4% of the gypsum and 6% of the limestone.

In a preferred embodiment, the caprolactam raw material in the step S1 is an important organic chemical raw material, which is a monomer for producing nylon-6 fiber (i.e., nylon) and nylon-6 engineering plastics, and has wide applications in many fields such as automobiles, textiles, electronics, machinery, and the like.

In a preferred embodiment, the polymerized glycerol in step S2 is glycerol, and under appropriate conditions, glycerol molecules themselves can be polymerized with each other to form a polymer.

In a preferred embodiment, the cement clinker and the admixture in step S6 are filtered before use to remove the impurities with large particles inside.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the invention uses caprolactam raw materials and polyglycerol raw materials as grinding aids, has the characteristics of good grinding aid effect, large production increase range and improved cement fluidity, particularly has obvious later strength increase, is superior to the prior triethanolamine grinding aids, and simultaneously cement ground by the cement grinding aid can adapt to different cement grinding aid users and has important significance for improving the durability of buildings, namely the service life in the setting time of the cement, the fluidity of the cement mortar and the water requirement of the standard consistency of the cement.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.