基于偏序集的硫化矿石自燃倾向性评价

doi:10.11872/j.issn.1005-2518.2022.01.046

Abstract

Abstract:

Aiming at the controversial assignment of index weight in the evaluation method of spontaneous combustion tendency of traditional sulfide ores，a partial ordered set evaluation model for spontaneous combustion tendency of sulfide ores was established based on the partial ordered set theory of implied weight. Firstly，the low temperature oxidation weight gain rate，self-hot spot temperature and spontaneous ignition point temperature of sulfide ores were selected as the evaluation index set and the classification standard of spontaneous combustion tendency of sulfide ores was determined. Secondly，the data of the samples to be judged were collected，and the virtual samples were artificially constructed according to the grading standards. The weight order information of the evaluation indexes was obtained by using the information entropy theory，and the partial order matrix was constructed. Finally，Hasse matrix was obtained and Hasse graph was drawn，and the layer set information presented in the graph was analyzed to evaluate the spontaneous combustion tendency of sulfide ores. The example analysis results show that the evaluation model can effectively avoid the weighting dispute of the traditional evaluation method，the classification results are more precise，the evaluation results are accurate and reasonable，and has good robustness，which provide a new idea for optimizing the evaluation method of spontaneous combustion tendency of sulfide ores.

Key words: sulfide ore, spontaneous combustion tendency, index weight, partial ordered set, Hasse diagram

CLC Number:

X936

Ziqing HAN,Zijun LI,Yuanyuan XU. Evaluation of Spontaneous Combustion Tendency of Sulfide Ore Based on Partial Ordered Set[J].Gold Science and Technology, 2022, 30(1): 105-112.

Figures/Tables 7

Table 1

Fig.1

Table 2

Original data of evaluation indexes of ore samples to be judged"

矿样编号	评价指标
矿样编号	氧化增重率 $x 1 / %$	自热点 $x 2 / ℃$	自燃点 $x 3 / ℃$
A1	10.8	146	239
A2	9.5	60	296
A3	2.2	230	437
A4	1.2	127	453
A5	2.1	270	422
A6	14.7	140	270
A7	2.1	122	436
A8	0.9	243	301
A9	1.0	297	385
A10	9.3	56	233
A11	8	90	200
A12	1.3	240	340
A13	0.9	270	360

Table 2

Table 3

Table 4

Table 5

Fig.2

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100 d氧化增重率/%	自热点/℃	自燃点/℃	自燃倾向性描述	自燃倾向性等级
>2.0	<100	<220	易自燃	Ⅰ
1.0~2.0	100~250	220~350	易自热不易自燃	Ⅱ
<1.0	>250	>350	不易自燃	Ⅲ

矿样编号	评价指标
矿样编号	氧化增重率	自热点	自燃点
A1	0.0236	0.3734	0.1542
A2	0.0357	0.0166	0.3794
A3	0.3706	0.7220	0.9368
A4	0.7337	0.2946	1.0000
A5	0.3913	0.8880	0.8775
A6	0.0000	0.3485	0.2767
A7	0.3913	0.2739	0.9328
A8	1.0000	0.7759	0.3992
A9	0.8935	1.0000	0.7312
A10	0.0379	0.0000	0.1304
A11	0.0546	0.1411	0.0000
A12	0.6723	0.7635	0.5534
A13	1.0000	0.8880	0.6324

Evaluation of Spontaneous Combustion Tendency of Sulfide Ore Based on Partial Ordered Set

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	A1	A2	A3	A4	A5	A6	A7	A8	A9	A10	A11	A12	A13
A1	1	0	0	0	0	0	0	0	0	0	0	0	0
A2	0	1	0	0	0	0	0	0	0	0	0	0	0
A3	1	1	1	0	0	1	0	0	0	1	1	0	0
A4	1	1	1	1	0	1	1	0	0	1	1	1	0
A5	1	1	0	0	1	1	0	0	0	1	1	0	0
A6	0	0	0	0	0	1	0	0	0	0	0	0	0
A7	1	1	0	0	0	1	1	0	0	1	1	0	0
A8	1	1	1	0	1	1	1	1	0	1	1	1	0
A9	1	1	1	0	1	1	1	0	1	1	1	0	0
A10	0	0	0	0	0	0	0	0	0	1	0	0	0
A11	0	0	0	0	0	0	0	0	0	0	1	0	0
A12	1	1	0	0	0	1	0	0	0	1	1	1	0
A13	1	1	1	1	1	1	1	1	1	1	1	1	1

	A1	A2	A3	A4	A5	A6	A7	A8	A9	A10	A11	A12
A1	0	0	0	0	0	0	0	0	0	0	0	0
A2	0	0	0	0	0	0	0	0	0	0	0	0
A3	1	1	0	0	0	1	0	0	0	1	1	0
A4	0	0	1	0	0	0	1	0	0	0	0	1
A5	1	1	0	0	0	1	0	0	0	1	1	0
A6	0	0	0	0	0	0	0	0	0	0	0	0
A7	1	1	0	0	0	1	0	0	0	1	1	0
A8	0	0	1	0	1	0	1	0	0	0	0	1
A9	0	0	1	0	1	0	1	0	0	0	0	0
A10	0	0	0	0	0	0	0	0	0	0	0	0
A11	0	0	0	0	0	0	0	0	0	0	0	0
A12	1	1	0	0	0	1	0	0	0	1	1	0
A13	0	0	0	1	0	0	0	1	1	0	0	0

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	A1	A2	A3	A4	A5	A6	A7	A8	A9	A10	A11	A12	A13
A1	1	0	0	0	0	0	0	0	0	0	0	0	0
A2	0	1	0	0	0	0	0	0	0	0	0	0	0
A3	1	1	1	0	0	1	0	0	0	1	1	0	0
A4	1	1	1	1	0	1	1	0	0	1	1	1	0
A5	1	1	0	0	1	1	0	0	0	1	1	0	0
A6	0	0	0	0	0	1	0	0	0	0	0	0	0
A7	1	1	0	0	0	1	1	0	0	1	1	0	0
A8	1	1	1	0	1	1	1	1	0	1	1	1	0
A9	1	1	1	0	1	1	1	0	1	1	1	0	0
A10	0	0	0	0	0	0	0	0	0	1	0	0	0
A11	0	0	0	0	0	0	0	0	0	0	1	0	0
A12	1	1	0	0	0	1	0	0	0	1	1	1	0
A13	1	1	1	1	1	1	1	1	1	1	1	1	1

	A1	A2	A3	A4	A5	A6	A7	A8	A9	A10	A11	A12
A1	0	0	0	0	0	0	0	0	0	0	0	0
A2	0	0	0	0	0	0	0	0	0	0	0	0
A3	1	1	0	0	0	1	0	0	0	1	1	0
A4	0	0	1	0	0	0	1	0	0	0	0	1
A5	1	1	0	0	0	1	0	0	0	1	1	0
A6	0	0	0	0	0	0	0	0	0	0	0	0
A7	1	1	0	0	0	1	0	0	0	1	1	0
A8	0	0	1	0	1	0	1	0	0	0	0	1
A9	0	0	1	0	1	0	1	0	0	0	0	0
A10	0	0	0	0	0	0	0	0	0	0	0	0
A11	0	0	0	0	0	0	0	0	0	0	0	0
A12	1	1	0	0	0	1	0	0	0	1	1	0
A13	0	0	0	1	0	0	0	1	1	0	0	0

	A1	A2	A3	A4	A5	A6	A7	A8	A9	A10	A11	A12	A13
A1	1	0	0	0	0	0	0	0	0	0	0	0	0
A2	0	1	0	0	0	0	0	0	0	0	0	0	0
A3	1	1	1	0	0	1	0	0	0	1	1	0	0
A4	1	1	1	1	0	1	1	0	0	1	1	1	0
A5	1	1	0	0	1	1	0	0	0	1	1	0	0
A6	0	0	0	0	0	1	0	0	0	0	0	0	0
A7	1	1	0	0	0	1	1	0	0	1	1	0	0
A8	1	1	1	0	1	1	1	1	0	1	1	1	0
A9	1	1	1	0	1	1	1	0	1	1	1	0	0
A10	0	0	0	0	0	0	0	0	0	1	0	0	0
A11	0	0	0	0	0	0	0	0	0	0	1	0	0
A12	1	1	0	0	0	1	0	0	0	1	1	1	0
A13	1	1	1	1	1	1	1	1	1	1	1	1	1

	A1	A2	A3	A4	A5	A6	A7	A8	A9	A10	A11	A12
A1	0	0	0	0	0	0	0	0	0	0	0	0
A2	0	0	0	0	0	0	0	0	0	0	0	0
A3	1	1	0	0	0	1	0	0	0	1	1	0
A4	0	0	1	0	0	0	1	0	0	0	0	1
A5	1	1	0	0	0	1	0	0	0	1	1	0
A6	0	0	0	0	0	0	0	0	0	0	0	0
A7	1	1	0	0	0	1	0	0	0	1	1	0
A8	0	0	1	0	1	0	1	0	0	0	0	1
A9	0	0	1	0	1	0	1	0	0	0	0	0
A10	0	0	0	0	0	0	0	0	0	0	0	0
A11	0	0	0	0	0	0	0	0	0	0	0	0
A12	1	1	0	0	0	1	0	0	0	1	1	0
A13	0	0	0	1	0	0	0	1	1	0	0	0