阅读说明：本技术 一种陶瓷减水剂及其制备方法 (Ceramic water reducing agent and preparation method thereof ) 是由 刘素珍 牛逸然 于 2019-11-12 设计创作，主要内容包括：本发明公开了一种陶瓷减水剂,包括以下质量份数材料：水玻璃25-35份,氧化钠溶液25-35份,二氧化硅溶液25-35份,氢氧化钠溶液35-45份,硅酸钠残渣25-35份,水玻璃为钠水玻璃。本发明充分利用硅酸钠生产过程中的残渣,变废为宝,实现了废弃物资源的综合利用、工业高效清洁化生产与可持续绿色发展,降低了生产成本,混合物的细度达到800目以上,从而使烧制的陶瓷更致密,表面更光洁,耐磨性更好,强度更高,防污性更好。(The invention discloses a ceramic water reducing agent which comprises the following materials in parts by weight: 25-35 parts of water glass, 25-35 parts of sodium oxide solution, 25-35 parts of silicon dioxide solution, 35-45 parts of sodium hydroxide solution, 25-35 parts of sodium silicate residue and the water glass is sodium water glass. The invention makes full use of the residue in the sodium silicate production process, changes waste into valuable, realizes the comprehensive utilization of waste resources, the high-efficiency industrial clean production and the sustainable green development, reduces the production cost, and the fineness of the mixture reaches more than 800 meshes, thereby ensuring that the fired ceramic is more compact, the surface is smoother, the wear resistance is better, the strength is higher, and the antifouling property is better.)

1. The ceramic water reducing agent is characterized by comprising the following materials in parts by mass: 25-35 parts of water glass, 25-35 parts of sodium oxide solution, 25-35 parts of silicon dioxide solution, 35-45 parts of sodium hydroxide solution and 25-35 parts of sodium silicate residue, wherein the water glass is sodium water glass.

2. The ceramic water reducer according to claim 1, characterized in that the modulus of the water glass is 2.0-2.5, the concentration of the water glass is 45-55 baume degrees, the mass concentration of the sodium oxide is 10-18%, the mass concentration of the silicon dioxide is 25-35%, and the mass concentration of the sodium hydroxide is 25-35%.

3. The ceramic water reducing agent according to claim 1, characterized in that the sodium silicate residue is sodium silicate solid residue, and the sodium silicate residue comprises the following materials in parts by weight: 5-6 parts of sodium oxide, 10-15 parts of water-soluble silicon dioxide, 10-20 parts of aluminum oxide, 5-10 parts of calcium oxide and 50-60 parts of water-insoluble silicon dioxide.

4. The preparation method of the ceramic water reducing agent of claims 1 to 3, characterized by comprising the following steps:

(1) crushing the solid sodium silicate residue into powder;

(2) putting 25-35 parts of water glass into an open reaction kettle, adding 25-35 parts of sodium oxide solution, 25-35 parts of silicon dioxide solution, 25-35 parts of sodium silicate residue powder and 35-45 parts of sodium hydroxide solution under the stirring state, heating the open reaction kettle to enable the temperature of mixed liquid in the open reaction kettle to reach 45-55 ℃, and stirring for 0.4-0.6 h;

(3) extracting a mixed solution, measuring the modulus of the mixed solution by using a chemical titration method, adding a proper amount of sodium hydroxide solution with the mass concentration of 25-35% into the mixed solution when the modulus of the mixed solution is too high, adding a proper amount of water glass with the modulus of 2.0-2.5 and the concentration of 45-55 Baume degrees into the mixed solution when the modulus of the mixed solution is too low, and controlling the modulus of the mixed solution to be 0.95-0.98;

(4) placing the mixed solution into a clean container, standing for 0.8-1.2h at room temperature, and crystallizing to obtain solid;

(5) the mixture crystallized to a solid was packed in 25 Kg/bag.

5. The preparation method of the ceramic water reducing agent according to claim 4, wherein the fineness of the mixture in the step (5) is more than 800 meshes.

Technical Field

The invention belongs to the field of solid waste recycling, and particularly relates to a ceramic water reducing agent and a preparation method thereof.

Background

The water reducing agent is a concrete admixture capable of reducing the water consumption for mixing under the condition of maintaining the slump constant of concrete basically. The water reducing agent has a dispersing effect on cement particles, can improve the workability of the cement particles, reduces the unit water consumption and improves the fluidity of concrete mixtures. In the production process of the sodium silicate, the sodium metasilicate is added as a water reducing agent in the ceramic preparation process, and simultaneously, main components (AI 2O and SiO 2) of the argil are added as materials in the ceramic preparation process, so that waste residues are generated in the production process of the sodium silicate, and the waste residues are directly discharged to cause resource waste and environmental pollution.

Disclosure of Invention

In order to solve the problems, the invention provides a ceramic water reducing agent prepared from sodium silicate residues and a preparation method thereof.

The invention is realized by the following steps: the ceramic water reducing agent comprises the following materials in parts by weight: 25-35 parts of water glass, 25-35 parts of sodium oxide solution, 25-35 parts of silicon dioxide solution, 35-45 parts of sodium hydroxide solution and 25-35 parts of sodium silicate residue, wherein the water glass is sodium water glass.

Preferably, the modulus of the water glass is 2.0-2.5, the concentration of the water glass is 45-55 baume degrees, the mass concentration of the sodium oxide is 10-18%, the mass concentration of the silicon dioxide is 25-35%, and the mass concentration of the sodium hydroxide is 25-35%.

Preferably, the sodium silicate residue is sodium silicate solid residue, and the sodium silicate residue comprises the following materials in parts by weight: 5-6 parts of sodium oxide, 10-15 parts of water-soluble silicon dioxide, 10-20 parts of aluminum oxide, 5-10 parts of calcium oxide and 50-60 parts of water-insoluble silicon dioxide, wherein the sodium silicate residue contains water, and part of silicon dioxide is dissolved in water.

The preparation method of the ceramic water reducing agent comprises the following steps:

(1) crushing the solid sodium silicate residue into powder;

(2) putting 25-35 parts of water glass into an open reaction kettle, adding 25-35 parts of sodium oxide solution, 25-35 parts of silicon dioxide solution, 25-35 parts of sodium silicate residue powder and 35-45 parts of sodium hydroxide solution under the stirring state, heating the open reaction kettle to enable the temperature of mixed liquid in the open reaction kettle to reach 45-55 ℃, and stirring for 0.4-0.6h until the mixed liquid is uniformly stirred;

(3) extracting a mixed solution, measuring the modulus of the mixed solution by using a chemical titration method, gradually adding a proper amount of 25-35% sodium hydroxide solution into the mixed solution when the modulus of the mixed solution is too high, uniformly stirring, measuring, gradually adding a proper amount of water glass with the modulus of 2.0-2.5 and the concentration of 45-55 baume degrees into the mixed solution when the modulus of the mixed solution is too low, uniformly stirring, measuring, and controlling the modulus of the mixed solution to be 0.95-0.98;

(4) placing the mixed solution into a clean container with the thickness of 30mm x 15mm, standing for 0.8-1.2h at room temperature, crystallizing into solid, and having short crystallization time in winter and long crystallization time in summer;

(5) the mixture crystallized into solid is weighed and bagged according to 25 Kg/bag.

Preferably, the fineness of the mixture in the step (5) is more than 800 meshes.

The invention makes full use of the residue in the sodium silicate production process, changes waste into valuable, realizes the comprehensive utilization of waste resources, the high-efficiency industrial clean production and the sustainable green development, reduces the production cost, and the fineness of the mixture reaches more than 800 meshes, thereby ensuring that the fired ceramic is more compact, the surface is smoother, the wear resistance is better, the strength is higher, and the antifouling property is better.

Detailed Description

The present invention is further described in detail below with reference to specific embodiments so that those skilled in the art can practice the invention with reference to the description.

The ceramic water reducing agent comprises the following materials in parts by weight: 30 parts of water glass, 30 parts of sodium oxide solution, 30 parts of silicon dioxide solution, 40 parts of sodium hydroxide solution and 30 parts of sodium silicate residue, wherein the water glass is sodium water glass, the modulus of the water glass is 2.3, the concentration of the water glass is 50 baume degrees, the mass concentration of the sodium oxide is 13.5%, the mass concentration of the silicon dioxide is 31%, and the mass concentration of the sodium hydroxide is 30%.

The sodium silicate residue is sodium silicate solid residue, and the sodium silicate residue comprises the following materials in parts by weight: 5.6 parts of sodium oxide, 12 parts of water-soluble silicon dioxide, 16 parts of aluminum oxide, 8.4 parts of calcium oxide and 58 parts of water-insoluble silicon dioxide, wherein the sodium silicate residue contains water, and part of the silicon dioxide is dissolved in water.

The preparation method of the ceramic water reducing agent comprises the following steps:

(1) crushing the solid sodium silicate residue into powder;

(2) placing 30 parts of water glass into an open reaction kettle, adding 30 parts of sodium oxide solution, 30 parts of silicon dioxide solution, 30 parts of sodium silicate residue powder and 40 parts of sodium hydroxide solution under a stirring state, heating the open reaction kettle to enable the temperature of mixed liquid in the open reaction kettle to reach 50 ℃, and stirring for 0.5h until the mixed liquid is uniformly stirred;

(3) extracting a mixed solution, measuring the modulus of the mixed solution by using a chemical titration method, gradually adding a proper amount of sodium hydroxide solution with the mass concentration of 30% into the mixed solution when the modulus of the mixed solution is too high, uniformly stirring, and then measuring, gradually adding a proper amount of water glass with the modulus of 2.3 and the concentration of 50 Baume degrees into the mixed solution when the modulus of the mixed solution is too low, uniformly stirring, and then measuring, wherein the modulus of the mixed solution is controlled to be 0.95-0.98;

(4) placing the mixed solution into a clean container with the thickness of 30mm x 15mm, standing for 1h at room temperature, crystallizing into solid, wherein the crystallization time is short in winter and long in summer;

(5) the mixture crystallized into solid is weighed and bagged according to 25 Kg/bag.

The fineness of the mixture in the step (5) is more than 800 meshes.

Comparative example

Two water reducing agents in ceramic manufacturing

The silicon dioxide in the sodium silicate waste residue is fully utilized.

Analysis of effects and benefits

Ceramic making component

Quartz sand is not required to be added, and the production cost of the ceramic is reduced.

And (4) conclusion:

the ceramic water reducing agent is a product which makes full use of waste and has the following characteristics:

1. the waste residue from sodium silicate production is fully utilized, and the components of sodium silicate, silicon dioxide, aluminum oxide and the like contained in the waste residue of sodium silicate are changed into valuable.

2. Realizes the cyclic utilization of resources, realizes the cleanness of sodium silicate production and realizes the green sustainable development.

3. The ceramic product quality is improved, and the ceramic product has high smoothness, good wear resistance, high strength and better antifouling property.

4. The cost of the ceramic is reduced by about 8 percent.

5. According with the national development strategy of green manufacture created by the nation.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.