阅读说明：本技术 可降低陶瓷砖泥浆触变性的陶瓷泥浆解胶剂及其制备方法 (Ceramic slurry debonder capable of reducing thixotropy of ceramic tile slurry and preparation method thereof ) 是由 冯晓文 欧阳天生 于 2019-09-17 设计创作，主要内容包括：本发明涉及陶瓷泥浆解胶剂技术领域,公开了一种可降低陶瓷砖泥浆触变性的陶瓷泥浆解胶剂,包括下列重量百分比的原料组成：水玻璃69-71%,50%液碱11%,六偏磷酸钠5%,水10%,减水剂3-5%,还公开其制备方法：先将水玻璃从储罐通过泥浆泵抽取到螺旋桨搅拌机中,打开泥浆泵液碱进口端阀门,达到规定值后关闭泥浆泵；打开自来水管,完成全部液体材料的添加；启动螺旋桨搅拌机,连续搅拌30min,将原材料充分搅拌、混合、反应彻底；在螺旋桨搅拌机连续转动的情况下,向其中投入减水剂,全部添加完成后,连续搅拌30min,使其完全溶解并混合均匀。本发明,所形成复合泥浆解胶剂,通过在陶瓷砖生产原料制备工序的使用,效果明显,可显著减小泥浆的触变性。(The invention relates to the technical field of ceramic slurry debonder, and discloses a ceramic slurry debonder capable of reducing thixotropy of ceramic tile slurry, which comprises the following raw materials in percentage by weight: 69-71% of water glass, 11% of 50% liquid alkali, 5% of sodium hexametaphosphate, 10% of water and 3-5% of a water reducing agent, and also discloses a preparation method of the water reducing agent: firstly, pumping water glass into a propeller stirrer from a storage tank through a slurry pump, opening a valve at a liquid alkali inlet end of a slurry pump, and closing the slurry pump after a specified value is reached; opening a tap water pipe to complete the addition of all liquid materials; starting a propeller stirrer, continuously stirring for 30min, and fully stirring, mixing and reacting the raw materials thoroughly; under the condition of continuous rotation of the propeller stirrer, the water reducing agent is added into the propeller stirrer, and after all the water reducing agent is added, the propeller stirrer is continuously stirred for 30min to completely dissolve the water reducing agent and uniformly mix the water reducing agent. The composite slurry debonder formed by the method is used in the preparation process of the ceramic tile production raw materials, has obvious effect and can obviously reduce the thixotropy of the slurry.)

1. The ceramic slurry debonder for reducing the thixotropy of the ceramic tile slurry is characterized by comprising the following raw materials in percentage by weight: 69-71% of water glass, 11% of 50% liquid alkali, 5% of sodium hexametaphosphate, 10% of water and 3-5% of a water reducing agent.

2. The ceramic mud debonder for reducing thixotropy of ceramic tile mud of claim 1, wherein said ceramic mud debonder comprises the following raw materials by weight percent: 70% of water glass, 11% of 50% of liquid alkali, 5% of sodium hexametaphosphate, 10% of water and 4% of water reducing agent.

3. The ceramic mud debonder of claim 1 or 2, wherein the water glass is M =2.3-2.4, 50Be water glass.

4. The ceramic mud debonder of claim 3, wherein the water reducing agent is a naphthalene based superplasticizer.

5. A preparation process of a ceramic slurry debonder capable of reducing thixotropy of ceramic tile slurry,

(1) firstly, pumping water glass into a propeller stirrer from a storage tank through a slurry pump, acquiring the weight of the water glass through a weighing sensor, and closing a water glass inlet end valve of the slurry pump after the water glass reaches a specified value;

(2) opening a valve at a liquid alkali inlet end of a slurry pump, acquiring the weight of the slurry pump through a weighing sensor, and closing the slurry pump after the weight reaches a specified value;

(3) opening a tap water pipe, presetting the reading of the quantitative water meter, and closing the electromagnetic valve to finish the addition of all liquid materials after the reading reaches a specified value;

(4) starting a propeller stirrer, continuously stirring for 30min, and fully stirring, mixing and reacting the raw materials thoroughly;

(5) sampling and inspecting, after the quality standard is reached, adding the water reducing agent under the condition that the propeller stirrer continuously rotates, continuously stirring for 30min after all the water reducing agent is added, completely dissolving and uniformly mixing the water reducing agent, then sampling and detecting, and pumping the qualified water reducing agent into a storage tank for storage.

6. The process for preparing a ceramic slurry debonder for reducing thixotropy of a ceramic tile slurry according to claim 5, wherein in step (2), the slurry has a pH of 9 and the water glass has a modulus M = 1.5.

Technical Field

The invention relates to the technical field of ceramic slurry debonder, in particular to a ceramic slurry debonder capable of reducing thixotropy of ceramic tile slurry and a preparation method thereof.

Background

The ceramic tile is an important building decoration material, and is a sheet ceramic product obtained by adding plastic raw materials, ridge raw materials, fluxed raw materials, water, ball stones and other additives into a ball mill, grinding to obtain slurry with certain water content, fineness and specific gravity and good fluidity and suspension, spraying and granulating to obtain powder, pressing and forming by a press, then placing into a kiln, and firing at 1250 ℃.

The preparation of the raw materials is an important link of ceramic production, the' raw materials are burned, namely the real writing of the processing importance of the raw materials is realized, ideally, the ceramic slurry is expected to have lower water content, better fluidity, suspension property and lower thixotropy can be still kept, and spray granulation can be smoothly realized, so that the yield of a spray tower is high, the particle shape and the particle gradation of the powder subjected to spray drying granulation are good, the distribution performance (particle shape, gradation, density and the like) of the powder during later pressing is better, the generation probability of later-stage process defects is reduced, more importantly, the consumption of energy resources by spray granulation is low, and the green and low-carbon ceramic production, energy conservation and consumption reduction are realized.

The ceramic slurry dispergator is an important additive for helping the ceramic slurry to achieve the effect, although the general dispergator can realize the effective dispergation of the slurry, the thixotropy of the slurry cannot be reduced, and the storage, homogenization, ageing, conveying and spray granulation of the slurry can be influenced by the high or low thixotropy index.

The thixotropic state of the slurry refers to a state between its dilute fluid state and its thickened and condensed state, i.e., a phenomenon in which the slurry, when at rest, resembles a solidified body and, upon agitation or shaking, regains fluidity.

Thixotropy is also called shake change, and the property that the consistency of an object is reduced when the object is sheared, the consistency is increased when the object is sheared and is increased when the object is sheared, and the consistency is reduced when the object is sheared and is touched is changed.

Thixotropy is a reversible sol phenomenon, which is a reversible sol phenomenon of gel under the action of mechanical forces such as oscillation and compression, and is discovered by Flonedrich, and slender particles are connected by weak chemical bonds to form a network structure and are easily damaged by external force.

Disclosure of Invention

The invention aims to provide a ceramic slurry debonding agent capable of reducing thixotropy of ceramic tile slurry and a preparation method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a ceramic slurry debonder capable of reducing thixotropy of ceramic tile slurry comprises the following raw materials in percentage by weight: 69-71% of water glass, 11% of 50% liquid alkali, 5% of sodium hexametaphosphate, 10% of water and 3-5% of a water reducing agent.

As a further scheme of the invention: the ceramic slurry debonder comprises the following raw materials in percentage by weight: 70% of water glass, 11% of 50% of liquid alkali, 5% of sodium hexametaphosphate, 10% of water and 4% of water reducing agent.

As a further scheme of the invention: the water glass is M ═ 2.3-2.4 and 50Be water glass.

As a further scheme of the invention: the water reducing agent is a naphthalene-based high-efficiency water reducing agent.

A preparation method of a ceramic slurry debonder capable of reducing thixotropy of ceramic tile slurry comprises the following steps:

(1) firstly, pumping water glass into a propeller stirrer from a storage tank through a slurry pump, acquiring the weight of the water glass through a weighing sensor, and closing a water glass inlet end valve of the slurry pump after the water glass reaches a specified value;

(2) opening a valve at a liquid alkali inlet end of a slurry pump, acquiring the weight of the slurry pump through a weighing sensor, and closing the slurry pump after the weight reaches a specified value;

(3) opening a tap water pipe, presetting the reading of the quantitative water meter, and closing the electromagnetic valve to finish the addition of all liquid materials after the reading reaches a specified value;

(4) starting a propeller stirrer, continuously stirring for 30min, and fully stirring, mixing and reacting the raw materials thoroughly;

(5) sampling and inspecting, after the quality standard is reached, adding the water reducing agent under the condition that the propeller stirrer continuously rotates, continuously stirring for 30min after all the water reducing agent is added, completely dissolving and uniformly mixing the water reducing agent, then sampling and detecting, and pumping the qualified water reducing agent into a storage tank for storage.

As a still further scheme of the invention: in the step (2), the pH value of the slurry is 9, and the modulus M of the water glass is 1.5.

Compared with the prior art, the invention has the beneficial effects that:

1. the silicate ions of the water glass can form insoluble matters with Ca2+ and Mg2+ in the slurry, the exchange effect of Na + is promoted, the viscosity of the slurry is reduced, the fluidity is increased, under the normal condition, the modulus of the 50Be water glass is 2.3-2.4, and in order to enable the pH value of the slurry to reach about 9, 50% liquid alkali and water are added into the 50Be water glass, and the modulus of the 50Be water glass is adjusted to Be 1.5;

2. sodium hexametaphosphate is added on the basis of the first piece of the water glass with M being 1.5, the chelation effect of phosphate ions is utilized to enable cations to generate bonding, a complex is formed, the attraction between ions is reduced, the steric hindrance effect is supplemented, the chelate is one of the complexes, one or more polydentate ligands are required to provide a plurality of pairs of electrons to form coordinate bonds with a central body in the structure of the chelate, the chelate is generally more stable than a common complex, and the stability is enhanced due to the five-membered ring structure or the six-membered ring structure usually possessed in the structure of the chelate. Therefore, the stability constants of the chelates are very high, and in the debonding of the ceramic slurry or the glaze slip, the chelates form more stable chelates with cations, especially multivalent ions in the ceramic slurry, so that the attractive force among the ions is reduced, the viscosity of the slurry is reduced, the debonding effect is achieved, in addition, the chelates can also mask metal ions, and the stability of the slurry is improved;

3. the silicate and the phosphate have different dispergation mechanisms, and the combination of the silicate and the phosphate can further improve the performance of the dispergator;

4. after the ceramic slurry is processed, the ceramic slurry needs to enter a slurry tank for homogenization, aging and temporary storage, thixotropic properties of different degrees can be generated, the fluidity of the slurry is deteriorated, and spray granulation is influenced.

Detailed Description

The technical solutions in the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

The invention discloses a ceramic slurry debonder capable of reducing thixotropy of ceramic tile slurry, which comprises the following raw materials in percentage by weight: 69-71% of water glass, 11% of 50% liquid alkali, 5% of sodium hexametaphosphate, 10% of water and 3-5% of a water reducing agent.

The water glass is M2.3-2.4 and 50Be water glass, and the water reducing agent is a naphthalene-based high-efficiency water reducing agent.

In the embodiment, the ceramic mud debonder comprises the following raw materials in percentage by weight: 70% of water glass, 11% of 50% liquid alkali, 5% of sodium hexametaphosphate, 10% of water and 4% of water reducing agent, and the preparation method comprises the following steps:

(1) firstly, pumping water glass into a propeller stirrer from a storage tank through a slurry pump, acquiring the weight of the water glass through a weighing sensor, and closing a valve at the water glass inlet end of the slurry pump after the water glass reaches a specified value;

(2) opening a valve at a liquid alkali inlet end of a slurry pump, acquiring the weight of the slurry pump through a weighing sensor, and closing the slurry pump after the weight reaches a specified value, wherein the pH value of the slurry is 9, and the modulus M of water glass is 1.5;

(3) opening a tap water pipe, presetting the reading of the quantitative water meter, and closing the electromagnetic valve to finish the addition of all liquid materials after the reading reaches a specified value;

(4) starting a propeller stirrer, continuously stirring for 30min, and fully stirring, mixing and reacting the raw materials thoroughly;

(5) sampling and inspecting, after the quality standard is reached, adding the water reducing agent under the condition that the propeller stirrer continuously rotates, continuously stirring for 30min after all the water reducing agent is added, completely dissolving and uniformly mixing the water reducing agent, then sampling and detecting, and pumping the qualified water reducing agent into a storage tank for storage.

Compared with the data of the common slurry debonder in actual production, the data of the high-efficiency ceramic slurry debonder capable of reducing the thixotropy of the ceramic tile slurry prepared by the embodiment is detected by continuously observing for 10 days as shown in the following table:

the data show that the flow rate of the ceramic slurry using the common ceramic slurry debonder increases thixotropy, the viscosity of the slurry increases and the flow rate slows down along with the increase of time, but the ceramic slurry debonder of the invention can still keep the suspension property when the spheres are discharged under the same conditions, and the thixotropy of the slurry is improved and the fluidity of the slurry is accelerated.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.