响应面优化浮选磷尾矿制备陶粒及其对磷的吸附研究

doi:10.19964/j.issn.1006-4990.2024-0532

Abstract

Abstract:

Flotation of phosphate tailings is a solid waste generated during the flotation stage of phosphate ore.The tailings contain valuable elements such as calcium，magnesium，silicon，iron，and aluminum which have the potential for resource utilization.In order to improve the resource utilization rate of phosphate tailings，flotation phosphate tailings ceramic particles were prepared by grinding，granulation，drying，and calcination processes using primary and secondary phosphate tailings from a chemical plant in Hubei Province as the main raw materials，supplemented by montmorillonite as the binder.Single factor experiments were conducted and the Box-Behnken Design model was used to optimize the preparation process of ceramic particles.The addition amount of reverse selected phosphorus tailings，preheating temperature，roasting temperature，and roasting time were set as influencing factors，and the phosphorus adsorption rate was the response value.The influence of each influencing factor on the phosphorus adsorption rate was explored.The results showed that the optimal preparation process conditions for ceramic particles were 54% addition of reverse selected phosphorus tailings，preheating temperature of 401 ℃，roasting temperature of 950 ℃，and roasting time of 59 min.Under these conditions，the phosphorus adsorption rate was 99.60%.The ceramic particles were characterized and analyzed by using XRF，XRD，SEM，EDS，BET to explore their adsorption principle for phosphorus.This study provided a theoretical basis for the resource utilization of phosphate tailings.

Key words: phosphorus tailings, response surface, ceramsite, adsorption phosphorus removal

CLC Number:

TQ985

HOU Daiwen, LIANG Huan, XING Lijing, LIU Hai, ZHANG Huali, TIAN Chengtao, SHI Tongshan. Study on preparation and phosphorus adsorption of phosphate tailings ceramic particles by response surface method[J]. Inorganic Chemicals Industry, 2025, 57(11): 74-82.

Figures/Tables 14

Table 1

Fig.1

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Fig.2

Table 8

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Table 9

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References 15

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编号	反选磷尾矿添加量/%	孔隙率/%	堆积密度/ （g·cm^-3）	抗压强度/MPa	磷的吸附率/%
FPTC-1	0	55.02	0.816	2.85	39.40
FPTC-2	20	56.60	0.753	2.51	59.70
FPTC-3	40	59.98	0.648	2.13	98.20
FPTC-4	60	61.30	0.625	2.11	98.60
FPTC-5	80	61.91	0.614	0.75	90.00

编号	焙烧温度/℃	孔隙率/ %	堆积密度/ （g·cm^-3）	抗压强度/MPa	磷的吸附率/%
FPTC-6	450	59.67	0.824	1.25	57.00
FPTC-7	650	59.97	0.815	1.49	68.40
FPTC-8	850	62.25	0.723	1.79	91.46
FPTC-9	950	62.75	0.758	2.13	98.80
FPTC-10	1 050	55.01	0.952	2.16	97.56

编号	焙烧时间/min	孔隙率/ %	堆积密度/ （g·cm^-3）	抗压强度/MPa	磷的吸附率/%
FPTC-11	30	62.49	0.602	1.59	98.60
FPTC-12	60	60.12	0.646	2.13	98.12
FPTC-13	90	60.31	0.687	2.15	98.72
FPTC-14	120	59.99	0.725	2.18	98.80

方差来源	平方和	自由度	均方	F值	P值	显著性
模型	252.17	14	18.01	117.85	<0.000 1	♣♣
A	145.74	1	145.74	953.57	<0.000 1	♣♣
B	0.001 4	1	0.001 4	0.008 8	0.953 7
C	0.54	1	0.54	3.55	0.080 7
D	7.41	1	7.41	50.87	<0.000 1	♣♣
AB	0.12	1	0.12	0.76	0.399 1
AC	0.24	1	0.24	1.54	0.235 1
AD	0.06	1	0.06	0.39	0.541 0
BC	0.012	1	0.012	0.079	0.782 5
BD	0.11	1	0.11	0.71	0.412 8
CD	0.58	1	0.58	3.78	0.072 3
A²	83.56	1	83.56	546.72	<0.000 1	♣♣
B²	0.51	1	0.51	3.31	0.090 4
C²	25.25	1	25.25	165.19	<0.000 1	♣♣
D²	3.80	1	3.80	24.86	0.000 2	♣♣
残差	2.14	14	0.15
失拟项	2.14	10	0.21
纯误差	0	4	0
总和	254.31	28
相关系数	0.950 9
决定相关系数	0.983 2

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on preparation and phosphorus adsorption of phosphate tailings ceramic particles by response surface method

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实验序号	A/%	B/℃	C/℃	D/min	磷的吸附率/%
1	70	400	950	40	99.30
2	70	400	900	60	97.51
3	70	350	950	60	99.24
4	60	400	950	60	99.45
5	60	400	900	80	95.73
6	60	450	900	60	96.74
7	60	400	1 000	80	95.44
8	70	450	950	60	99.20
9	60	400	950	60	99.45
10	50	400	900	60	90.31
11	60	400	950	60	99.45
12	60	450	1 000	60	97.88
13	50	450	950	60	91.68
14	50	400	1 000	60	90.57
15	50	400	950	80	91.22
16	60	350	950	40	98.70
17	60	400	950	60	99.45
18	60	350	900	60	96.71
19	70	400	1 000	60	96.80
20	60	450	950	80	97.60
21	60	400	900	40	97.32
22	70	400	950	80	97.99
23	60	450	950	40	99.23
24	50	350	950	60	92.40
25	50	400	950	40	92.04
26	60	350	950	80	97.73
27	60	400	1 000	40	98.55
28	60	350	1 000	60	97.63
29	60	400	950	60	99.45

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