CN103342540A

CN103342540A - Mud for preparing Nixing pottery through calcination

Info

Publication number: CN103342540A
Application number: CN2013102650279A
Authority: CN
Inventors: 郭卉
Original assignee: GUANGXI QINZHOU BEIBU GULF NIXING YUTAO Co Ltd
Current assignee: GUANGXI QINZHOU BEIBU GULF NIXING YUTAO Co Ltd
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2013-10-09

Abstract

The invention discloses mud for preparing Nixing pottery through calcination. The mud comprises the following components in parts by weight: 40-50 parts of east mud, 20-30 parts of west mud, 10-15 parts of kaolin, 5-10 parts of calcined kaolin and 5-10 parts of wollastonite. According to the mud, the defect of crack during high-temperature firing of the Nixing pottery is overcome, and meanwhile, a blank of the Nixing pottery can be glazed or painted.

Description

A kind of pug of calcining the emerging pottery of preparation mud

Technical field:

The present invention relates to the making field of pottery, the concrete emerging ceramic of Qiezhou, Guangxi mud is made the pug that calcining in the process prepares the emerging pottery of mud.

Background technology:

Mud emerging pottery in Qiezhou as a kind of traditional folk art, has the history in more than 1300 year so far.The preparation technology of the emerging pottery of tradition Qiezhou mud mainly comprises following step: 1) preparation blank: blank is made by china clay material, select for use the earth of the Jiang Yidong that admires that crosses urban district, Qiezhou (to be commonly called as eastern mud: be soft clay, color is yellow-white, contain micro-quartz sand, in the production technique of the emerging pottery of mud, work to adjust plasticity-and associativity) and by the emperor himself to the west of the river earth of region (be commonly called as western mud: be the higher purple mudstone of a kind of iron-holder, color is red-purple, upper layer has a small amount of irony to contaminate, be flint clay, plasticity-and associativity are relatively poor), to the east of mud 40～60%, the weight percent of west mud 60～40% mixes; 2) blank forming; 3) base substrate finishing; 4) body drying; 5) decorate base substrate: the emerging pottery of mud neither adds any pigment, not glazing in making processes, also not at base substrate with any coloured material drawing colour and pattern, only rely on the transmutation that occurs once in a while to make the emerging pottery of mud present color unpredictable and control, and use artistic carving to decorate base substrate.6) fire: will decorate good base substrate loading of kiln and fire; In order to reach the higher rate of burning till and to improve the transmutation rate, the top temperature control that base substrate is fired is at 1100～1200 ℃, and the firing time is 10 hours, and fired back kiln discharge is the emerging pottery of mud.Use the pottery base substrate of different blank preparations, the firing temperature that can bear is discrepant.The emerging greenwave body of mud be to the east of mud and two kinds of china clay materials of western mud make, non-refractory, firing temperature is above 1200 ℃, crackle or breakage can appear in billet surface, serious even blank deformation occurs and cave in, so when decorating the emerging greenwave body of mud, can not use and must describe decorative pattern, pattern through the coloured material that high-temperature firing could develop the color, only rely on the transmutation that occurs once in a while when firing, make the emerging pottery of mud different color occur.

Summary of the invention

The technical problem that the present invention solves is both can give mud emerging greenwave body glazing or paint coloured silk, and the rate of burning till and the cracking resistance variability in order to improve the emerging pottery of high-temperature firing mud provides a kind of pug of calcining the emerging pottery of preparation mud simultaneously.

To achieve these goals, the present invention is by the following technical solutions:

In weight part, its component is 40～50 parts in eastern mud, 20～30 parts in western mud, 10～15 parts of kaolin, 5～10 parts of calcined kaolins, 5～10 parts of wollastonites.

In the such scheme, its preferred version is that in weight part, its component is: 45～50 parts in eastern mud, 25～30 parts in western mud, 10～12 parts of kaolin, 5～8 parts of calcined kaolins, 5～8 parts of wollastonites.

In the such scheme, its preferred version is that in weight part, its component is: 50 parts in eastern mud, 30 parts in western mud, 10 parts of kaolin, 5 parts of calcined kaolins, 5 parts of wollastonites.

In the such scheme, the abundant more and suitable more high-temperature firing of base substrate can be handled raw material with following two kinds of methods before the preparation blank in advance for the base substrate texture that makes this blank moulding; First method is: take by weighing each raw material by weight ratio respectively, mix, place and obtain the emerging pottery material of mud after 20～30 days; Second method is: take by weighing each raw material by weight ratio respectively, get eastern mud earlier and western mud mixes, place after 20～30 days, obtain mixture A; Get kaolin, calcined kaolin and wollastonite then and mix, obtain mixture B; Again mixture A and mixture B are mixed, place and obtain the emerging pottery material of mud after 10～20 days.

Advantage of the present invention is as follows:

The present invention uses wollastonite, effectively reduces the base substrate shrinking percentage, reduces base substrate wet swelling, prevents that later stage of base substrate is dry and cracked etc., and the base substrate maturation speeds up in sintering process, shortens the firing time.

Embodiment:

Below further specify essentiality content of the present invention with embodiments of the invention, but do not limit the present invention with this.

Following embodiment, evenly weight part meter.

The embodiment composition of raw materials sees Table 1:

Table 1

The above-mentioned raw materials chemical ingredients sees Table 2:

Table 2

?	LOI	SiO ₂	Al ₂O ₃	Fe ₂O	TiO ₂	CaO	MgO	K ₂O	Na ₂O
										East mud	0.07	45.65	12.80	25.85	0.08	10.90	0.56	1.77	0.54
West mud	0.04	27.14	15.80	39.65	0.31	13.90	0.12	1.88	0.63
										Kaolin	11.45	44.91	36.1	1.34	1.74	0.97	0.64	1.29	0.67
Calcined kaolin	0.18	54.45	42.85	0.18	0.49	1.03	0.20	0.45	0.37
										Wollastonite	1.68	50.16	0.28	0.87	0.14	45.32	0.70	0.32	0.23

The physicals that the calcining of the various embodiments described above of the present invention prepares the emerging greenwave body of mud sees Table 3:

Table 3

?	Drying shrinkage (%)	Percent of firing shrinkage (%)	Burn till folding strength (Mpa)	The freedom from cracking performance
					Embodiment 1	2.6	3.7	58.6	Nothing is split
Embodiment 2	2.8	3.2	55.6	Sparse crackle
					Embodiment 3	2.6	4.3	51.4	Nothing is split
Embodiment 4	2.5	3.1	56.7	Nothing is split
					Embodiment 5	2.4	3.4	58.6	Sparse crackle
Embodiment 6	2.8	3.3	49.3	Nothing is split

The increase of embodiment 3,4 middle wollastonite content, glaze does not have crack performance, and sparse crackle appears in embodiment 2 glazes, and embodiment 3 is more than the wollastonite content of embodiment 2, then embodiment 3 no crack performances; This shows the increase along with wollastonite content, and glaze freedom from cracking ability strengthens.

Embodiment 3 compares with 2, and wollastonite content increases, though the freedom from cracking ability improves, burns till folding strength and descends; As seen wollastonite content must be controlled within reasonable range.

Embodiment 4 is identical with the wollastonite content of embodiment 5, but the kaolin content of embodiment 5 is less, and the content of calcined kaolin is more, the SiO in the chemical constitution that causes filling a prescription ₂Content reduces, Al ₂O ₃Content increases, and causes the suffered stress of glaze of embodiment 5 base substrates to reduce, so sparse crackle appears in glaze.This shows along with the kaolin of high SiO2 content in the prescription and eastern mud reduce corresponding high Al ₂O ₃The increase of the calcined kaolin of content, the freedom from cracking ability of base substrate descends; Therefore glaze freedom from cracking ability to be improved, the raw material of the contour SiO2 content of eastern mud will be increased.

Every performance index of embodiment 1 are all comparatively desirable, are the preferred versions that the present invention calcines the pug of the emerging pottery of preparation mud.

Claims

1. calcine the pug for preparing the emerging pottery of mud for one kind, it is characterized in that: in weight part, its component is 40～50 parts in eastern mud, 20～30 parts in western mud, 10～15 parts of kaolin, 5～10 parts of calcined kaolins, 5～10 parts of wollastonites.

2. a kind of pug of calcining preparation mud emerging pottery according to claim 1, it is characterized in that: in weight part, its component is: 45～50 parts in eastern mud, 25～30 parts in western mud, 10～12 parts of kaolin, 5～8 parts of calcined kaolins, 5～8 parts of wollastonites.

3. a kind of pug of calcining preparation mud emerging pottery according to claim 1, it is characterized in that: in weight part, its component is: 50 parts in eastern mud, 30 parts in western mud, 10 parts of kaolin, 5 parts of calcined kaolins, 5 parts of wollastonites.

4. according to any described a kind of pug of calcining the emerging pottery of preparation mud of claim 1～3, it is characterized in that: take by weighing each raw material by weight ratio respectively, mix, place and obtain the emerging pottery material of mud after 20～30 days.

5. according to any described a kind of pug of calcining preparation mud emerging pottery of claim 1～3, it is characterized in that: take by weighing each raw material by weight ratio respectively, get eastern mud earlier and western mud mixes, place after 20～30 days, obtain mixture A; Get kaolin, calcined kaolin and wollastonite then and mix, obtain mixture B; Again mixture A and mixture B are mixed, place and obtain the emerging pottery material of mud after 10～20 days.