磷矿对牙舟陶土煅烧性能的影响研究

doi:10.19964/j.issn.1006-4990.2021-0463

Abstract

Abstract:

Yazhou pottery has an important role in the ceramic industry，and clay has an important impact on the performance of Yazhou pottery.In order to strengthen the research on Yazhou pottery，the chemical composition，particle size distribution，crystal phase composition，thermal properties and whiteness of Yazhou clay were investigated by chemical analysis methods，laser particle size analyzer，X-ray diffractometer，comprehensive thermal analyzer，WSB digital whiteness meter and other testing methods.The results showed that the Yazhou clay was mainly composed of quartz and perlite. The content of quartz was 59.34% and the content of perlite was 34.78%.The particle size of Yazhou clay had a wide distribution，and the particles with a particle size of less than 6.5 μm was accounted for 58.67%.The smaller particle size，the lower quartz content.On this basis，combined with the abundant phosphate rock resources in Qiannan，Guizhou，the effect of the addition of phosphate rock on the whiteness，hardness and phase composition of the Yazhou clay during the calcination process was studied.The studies showed that the whiteness of Yazhou clay first increased and then decreased with increasing temperature，reaching a maximum of 45.5% at 1 100 ℃.After adding the phosphate rock component，the whiteness increased to 54% at 1 100 ℃，and the solid solution formation temperature decreased during calcination，the sintering temperature decreased，which was accompanied by the production of anorthite minerals.

Key words: Yazhou pottery, perlite, kaolinite, phosphorite, phosphate ceramics

CLC Number:

TQ174

RUAN Daitan,ZHOU Junhong,LIN Ling,CHEN Hangxin,WANG Yuanhang,WEN Zhigang. Study on effect of phosphate rock on calcination performance of Yazhou pottery clay[J]. Inorganic Chemicals Industry, 2022, 54(6): 78-83.

Figures/Tables 13

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References 11

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项目	质量分数/%	项目	质量分数/%
Al₂O₃	13.75	MgO	0.29
SiO₂	75.52	K₂O	2.26
Fe₂O₃	1.30	P₂O₅	0.11
TiO₂	0.95	SO₃	0.04
CaO	0.34

序号	粒径/μm	颗粒质量/g	占比/%
1	>380	1.01	0.23
2	180~380	0.44	0.10
3	150~180	0.72	0.17
4	75~150	16.51	3.79
5	25~75	99.71	22.87
6	13~25	33.81	7.75
7	10~13	15.36	3.52
8	6.5~10	12.63	2.90
9	<6.5	255.82	58.67

序号	粒径范围/ μm	化学组成质量分数/%
序号	粒径范围/ μm	Al₂O₃	SiO₂
1	13~25	12.09	78.34
2	10~13	6.57	87.11
3	6.5~10	5.54	88.30
4	<6.5	24.51	56.91

序号	粒径范围/ μm	化学组成质量分数/%		矿物组成质量分数/%
序号	粒径范围/ μm	Al₂O₃	SiO₂	石英	珍珠石
1	未筛分	13.75	75.52	59.34	34.78
2	13~25	12.09	78.34	64.12	30.58
3	10~13	6.57	87.11	79.38	16.62
4	6.5~10	5.54	88.30	81.78	14.01
5	<6.5	24.51	56.91	28.07	62.00

序号	煅烧温度/ ℃	白度/ %	硬度/ HA	密度/ （g·cm^-3）
1	800	39.436	71.3	1.70
2	900	41.577	80.0	1.75
3	1 000	44.065	83.2	1.77
4	1 100	45.511	90.8	1.82
5	1 200	27.454	88.5	1.80
6	1 300	34.845	84.2	1.81

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on effect of phosphate rock on calcination performance of Yazhou pottery clay

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组成	质量分数/%	组成	质量分数/%
P₂O₅	28.60	Fe₂O₃	1.59
SiO₂	9.54	TiO₂	0.05
Al₂O₃	0.93	MnO	0.11
CaO	43.19	K₂O	0.03
MgO	0.66

w（磷矿）/%	温度/℃	白度/%	硬度/HA
40	800	44.664	75.9
	900	47.836	82.7
	1 000	45.918	81.0
	1 100	54.000	84.0
	1 200	44.736	86.3
50	1 000	45.598	81.5
	1 100	47.524	87.6
	1 200	47.250	90.3
60	1 000	55.199	80.5
	1 100	56.874	81.9
	1 200	56.977	87.5

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