阅读说明：本技术 一种龙窑柴烧陶泥炼制方法 (Refining method of Longjiao pottery clay ) 是由 李庆德 王志玉 桑同慧 谢萍 陈锋 于 2019-09-05 设计创作，主要内容包括：本发明公开了一种龙窑柴烧陶泥炼制方法,包括以下步骤：1)选取四会市地区出产的陶土；2)将陶土放入高速混合机的搅拌釜中,添加适量的水,搅拌成浆糊状,浸泡陈腐后得到陶泥；3)将陶泥放入真空练泥机中进行炼制8～10遍,然后置于水池中进行省泥；4)将陶泥密封,省泥144～168h。本技术方案严格限定了陶土的选择范围,并且通过合理比例的搅拌、陈腐、炼制,使其转化为优质陶泥,能够承受至少1400℃的烧制,很好适应龙窑柴烧的加工工艺,不会发生爆裂的不良情况,保证陶件质量完美。(The invention discloses a refining method of dragon kiln firewood burning clay, which comprises the following steps: 1) selecting pottery clay produced in the region of the four meetings; 2) placing pottery clay into a stirring kettle of a high-speed mixer, adding a proper amount of water, stirring into paste, and soaking and aging to obtain pottery clay; 3) putting the clay into a vacuum pug mill for refining for 8-10 times, and then putting the clay into a water pool for saving clay; 4) sealing the ceramic clay, and saving clay for 144-168 hours. The technical scheme strictly limits the selection range of the pottery clay, converts the pottery clay into high-quality pottery clay through stirring, ageing and refining in a reasonable proportion, can bear firing at least 1400 ℃, is well suitable for the processing technology of dragon kiln firewood firing, does not generate the poor condition of cracking, and ensures the perfect quality of pottery pieces.)

1. a refining method of dragon kiln firewood burning clay is characterized by comprising the following steps:

1) Selecting pottery clay produced in the region of the four meetings;

2) Placing pottery clay into a stirring kettle of a high-speed mixer, adding a proper amount of water, stirring into paste, and soaking and aging to obtain pottery clay;

3) putting the clay into a vacuum pug mill for refining for 8-10 times, and then putting the clay into a water pool for saving clay;

4) Sealing the clay.

2. the refining method of the dragon kiln firewood burning clay according to claim 1, characterized in that the weight ratio of the water added in the step 2) to the clay is 1-2: 1; preferably, the weight ratio of the added water to the argil is 1: 1.

3. the refining method of the dragon kiln firewood burning clay according to claim 1, characterized in that the stirring speed in the step 2) is 25-35 r/min; preferably, the stirring rate is 30 r/min.

4. The refining method of the dragon kiln firewood burning clay according to claim 1, characterized in that the soaking and aging of the step 2) takes 60-78 hours; preferably, the soaking requires 72 hours for staling.

5. The refining method of the dragon kiln firewood burning clay according to claim 1, characterized in that the refining parameters in the step 3) are as follows: the screw diameter of the extrusion tail end is 250 mm; preferably, the speed of the extrusion screw shaft is 30 r/min; preferably, the vacuum chamber vacuum is not less than 95%.

6. The refining method of the dragon kiln firewood burning clay according to claim 1, characterized in that the clay saving in the step 3) takes 6 to 7 days.

7. the refining method of Longjiao pottery clay as claimed in claim 1, characterized by comprising the following steps

4) the method also comprises the following steps:

5) Kneading the clay, pressing the clay firmly at the center of the blank drawing machine, and repeatedly pushing and pressing the clay for 8-10 times.

Technical Field

The invention relates to the technical field of ceramics, in particular to a refining method of dragon kiln firewood burning clay.

Background

The history of ceramic manufacture in China has been thousands of years, and the inheritance and development of the generations also make the requirements of people on the quality of ceramics higher and higher. The firewood burning is an ancient firing method, and the firewood burning refers to ceramic products which are fired by using firewood as fuel, and mainly comprises two categories of glazing (ground glaze) and non-glazing (natural glaze); the final firing effect of the firewood firing pottery is determined by the interaction and mutual influence of factors such as soil, ash glaze (falling ash), duration (temperature), kiln atmosphere and kiln skill of a kiln operator. Therefore, the same pottery clay can be burnt in different kilns at the same temperature and by different woods and under the control of different people, and the burning effect is very different.

different pottery clay has different texture and color effects in the firing process due to different chemical components, and the manufactured pottery piece can also make users have different use feelings. When the pottery clay is refined into the pottery clay, the heat-resisting temperature, the attributes of a firewood kiln, the types of firewood and the like need to be considered; the pursuit is to make the soil produce the beauty of the firewood which is warm, moist, thick, stable and converged.

However, the existing dragon kiln firewood burning manufacturing process excessively pursues the randomness of the product appearance, and lacks control over part of basic process cores, so that the manufactured finished product is not perfect.

disclosure of Invention

The technical scheme aims to provide the refining method of the dragon kiln firewood burning clay, and the clay prepared by the method has stable quality and is suitable for manufacturing dragon kiln firewood burning ceramic pieces.

a refining method of dragon kiln firewood burning clay is characterized by comprising the following steps:

1) selecting pottery clay produced in the region of the four meetings;

2) Placing pottery clay into a stirring kettle of a high-speed mixer, adding a proper amount of water, stirring into paste, and soaking and aging to obtain pottery clay;

3) putting the clay into a vacuum pug mill for refining for 8-10 times, and then putting the clay into a water pool for saving clay;

4) sealing the clay.

Wherein the weight ratio of the water added in the step 2) to the argil is 1-2: 1; preferably, the weight ratio of the added water to the argil is 1: 1. step 2), the stirring speed is 25-35 r/min; preferably, the stirring rate is 30 r/min. The soaking and staling in the step 2) need 60-78 hours; preferably, the soaking requires 72 hours for staling. Step 3), the mud saving needs 6-7 days; the refining parameters are as follows: the screw diameter of the extrusion tail end is 250 mm; preferably, the speed of the extrusion screw shaft is 30 r/min; preferably, the vacuum chamber vacuum is not less than 95%.

Further, the method also comprises the following steps after the step 4):

5) Kneading the clay, pressing the clay firmly at the center of the blank drawing machine, and repeatedly pushing and pressing the clay for 8-10 times.

the technical scheme strictly limits the selection range of the pottery clay, converts the pottery clay into high-quality pottery clay through stirring, ageing and refining in a reasonable proportion, can bear firing at least 1400 ℃, is well suitable for the processing technology of dragon kiln firewood firing, does not generate the poor condition of cracking, and ensures the perfect quality of pottery pieces.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is an SEM image of a firewood burning test piece described in example 2;

FIG. 2 is a chemical composition analysis chart of a firewood test piece described in example 2.

Detailed Description