阅读说明：本技术 一种玻璃浆料用钴蓝色剂及其制备方法 (Cobalt blue agent for glass slurry and preparation method thereof ) 是由 郁加良 于 2019-11-15 设计创作，主要内容包括：本发明涉及色剂技术领域,具体涉及一种玻璃浆料用钴蓝色剂及其制备方法,将氧化锌30-50wt％、氧化钴18-35wt％、氧化硅20-40wt％、六偏磷酸钠2-8wt％、硼砂0.1-3wt％重量百分比含量的原料经混料机混合均匀,然后将其加入到隧道窑内进行恒温煅烧,得到中间产物,然后将中间产物进行破碎、球磨水洗、烘干、过筛后,得到玻璃浆料用钴蓝色剂。本发明解决了普通色剂高温烧结、颗粒硬团聚、粒度分布不均的问题,且制备方法简单、易操作,用作玻璃浆料后,其发色鲜亮纯净、遮盖力好、高耐酸碱且抗冲击性好。(The invention relates to the technical field of color agents, in particular to a cobalt blue agent for glass slurry and a preparation method thereof, wherein raw materials with the weight percentage content of 30-50 wt% of zinc oxide, 18-35 wt% of cobalt oxide, 20-40 wt% of silicon oxide, 2-8 wt% of sodium hexametaphosphate and 0.1-3 wt% of borax are uniformly mixed by a mixer, then the raw materials are added into a tunnel kiln for constant temperature calcination to obtain an intermediate product, and the intermediate product is crushed, ball-milled, washed, dried and sieved to obtain the cobalt blue agent for glass slurry. The invention solves the problems of high-temperature sintering, hard particle agglomeration and uneven particle size distribution of the common toner, has simple preparation method and easy operation, and has bright and pure color development, good covering power, high acid and alkali resistance and good impact resistance after being used as glass slurry.)

1. A cobalt blue agent for glass slurry is characterized in that: the material is prepared from the following raw materials in percentage by weight: 30-50 wt% of zinc oxide, 18-35 wt% of cobalt oxide, 20-40 wt% of silicon oxide, 2-8 wt% of sodium hexametaphosphate and 0.1-3 wt% of borax.

2. A method for preparing a cobalt blue colorant for glass paste according to claim 1, characterized in that: the method comprises the following steps:

(1) uniformly mixing the raw materials according to the formula ratio by a mixer, and then adding the mixture into a tunnel kiln for constant-temperature calcination to obtain an intermediate product;

(2) and crushing the intermediate product, performing ball milling and water washing, drying, and sieving to obtain the cobalt blue agent for the glass slurry.

3. The cobalt blue agent for glass paste and the preparation method thereof according to claim 2, wherein: the calcination temperature in the step (1) is 950-1100 ℃.

4. The method for preparing a cobalt blue colorant for glass paste according to claim 2, characterized in that: the calcination time in the step (1) is 2-3 h.

5. The method for preparing a cobalt blue colorant for glass paste according to claim 2, characterized in that: in the step (2), the mass ratio of the intermediate product, the balls and the water in the ball milling water washing process is 1: 4: 0.4.

6. the method for preparing a cobalt blue colorant for glass paste according to claim 2, characterized in that: and (3) in the step (2), the ball milling and water washing time is 1-2 h.

7. The method for preparing a cobalt blue colorant for glass paste according to claim 2, characterized in that: and (3) ball milling and water washing in the step (2) until D99 is 6 mu m.

8. The method for preparing a cobalt blue colorant for glass paste according to claim 2, characterized in that: the drying temperature in the step (2) is 150-180 ℃.

9. The method for preparing a cobalt blue colorant for glass paste according to claim 2, characterized in that: the sieve mesh number in the step (2) is 250 meshes.

Technical Field

The invention belongs to the technical field of color agents, and particularly relates to a cobalt blue agent for glass slurry and a preparation method thereof.

Background

With the development and the increasing maturity of the glass paste printing technology, the glass paste is applied to automobiles, furniture and household appliances, buildings and the like in a large quantity, the technical level is continuously promoted, and the colorization of the glass paste is a necessary development trend.

Blue is one of the three main primary colors, and many intermediate colors and composite colors are not available, thus becoming the main component of colorful colors. The cobalt blue agent for glass slurry in the prior art is prepared by adopting a traditional solid phase method of calcining a corresponding oxide at the temperature higher than 1300 ℃, and the method has the problems of extremely high energy consumption, serious hard particle agglomeration, wide pigment particle distribution, uneven color development and the like.

Disclosure of Invention

The invention mainly provides a cobalt blue agent for glass paste and a preparation method thereof, the preparation method is simple and easy to operate, the color development is bright and pure, the covering power is good, the acid and alkali resistance is high, and the impact resistance is high, so that the requirement of paste printing on the color agent is met. The technical scheme is as follows:

a cobalt blue agent for glass slurry is prepared from the following raw materials in percentage by weight: 30-50 wt% of zinc oxide, 18-35 wt% of cobalt oxide, 20-40 wt% of silicon oxide, 2-8 wt% of sodium hexametaphosphate and 0.1-3 wt% of borax.

The preparation method of the cobalt blue agent for the glass slurry comprises the following steps:

(1) uniformly mixing the raw materials according to the formula ratio by a mixer, and then adding the mixture into a tunnel kiln for constant-temperature calcination to obtain an intermediate product;

(2) and crushing the intermediate product, performing ball milling and water washing, drying, and sieving to obtain the cobalt blue colorant for the glass slurry.

Further, the calcining temperature in the step (1) is 950-1100 ℃.

Further, the calcination time in the step (1) is 2-3 h.

Further, the mass ratio of the intermediate product, the balls and the water in the ball milling and water washing in the step (2) is 1: 4: 0.4.

further, the ball milling and water washing time in the step (2) is 1-2 h.

Further, the ball mill in the step (2) is washed with water until the D99 is 6 μm.

Further, the drying temperature in the step (2) is 150-180 ℃.

Further, the screening mesh number in the step (2) is 250 meshes.

By adopting the scheme, the method has the following advantages:

1. the cobalt blue agent for glass slurry is sintered at low temperature, so that the production energy consumption is reduced, and the cobalt blue agent for glass slurry is beneficial to popularization and application and promotion of the progress and development of the cobalt blue agent technology.

2. According to the cobalt blue agent for the glass slurry, sodium hexametaphosphate and borax are used as mineralizers to promote sintering, so that the reactivity among particles is improved, the reaction temperature is reduced, and the reaction is more uniform and thorough.

3. The cobalt blue agent for the glass slurry improves the crystallization degree of the toner, and the probability of damaging the crystal structure is small during grinding, so that the particle size distribution is more uniform.

4. The cobalt blue agent for glass slurry provided by the invention has bright and pure color development, good uniformity, good product covering power, high acid and alkali resistance and good impact resistance, and can meet the use requirements.

5. The cobalt blue agent for the glass slurry has the advantages of simple preparation method and easy operation.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The experimental procedures in the following examples are conventional procedures unless otherwise specified, and the experimental reagents and materials involved are conventional chemical reagents and materials unless otherwise specified.

The raw materials of the following examples are mixed according to the weight percentages shown in Table 1:

TABLE 1