Huang Kaiguo Li Longfeng Zhang Guoxiang
Mineral Engineering Institute of Mining and Metallurgy CENTRAL substituted with conventional flotation sludge flotation of coal flotation stream branch laboratory tests, yy flotation agent to replace diesel oil, pine oil instead of with P8201 octanol or the like, comparative tests The effects are shown in Tables 1 and 2.
Table 1 Comparison test of drugs
Dosage amount (kg/ton) | name | Yield(%) | Ash (%) |
Yy oil 1.3 Secondary octanol 0.2 | Clean coal | 93.7 | 8.15 |
Tailing coal | 6.3 | 54.95 | |
raw coal | 100.0 | 11.10 | |
Yy oil 1.3 P8201 0.2 | Clean coal | 95.6 | 8.47 |
Tailing coal | 4.4 | 63.87 | |
raw coal | 100.0 | 10.91 | |
Diesel 1.3 P8201 0.2 | Clean coal | 94.1 | 8.12 |
Tailing coal | 5.9 | 55.97 | |
raw coal | 100.0 | 10.94 | |
Diesel 1.3 Secondary octanol 0.2 | Clean coal | 92.0 | 8.03 |
Tailing coal | 8.0 | 47.85 | |
raw coal | 100.0 | 11.22 | |
Diesel 1.3 Pine oil 0.2 | Clean coal | 93.4 | 8.20 |
Tailing coal | 6.6 | 50.46 | |
raw coal | 100.0 | 10.99 |
Table 2 Comparison results of branch stream flotation and conventional flotation
Flotation process | Dosage amount (kg/ton) | name | Yield(%) | Ash (%) |
Conventional flotation | Diesel 1.3 Secondary octanol 0.2 | Clean coal | 92.4 | 8.29 |
Tailing coal | 7.6 | 48.22 | ||
raw coal | 100.0 | 11.32 | ||
Branch stream flotation | Diesel 0.84 Octyl alcohol 0.14 | Clean coal | 9.21 | 7.92 |
Tailing coal | 7.90 | 51.56 | ||
raw coal | 100.0 | 11.37 | ||
Branch stream flotation | Yyæ²¹ 0.84 Octyl alcohol 0.14 | Clean coal | 92.50 | 7.87 |
Tailing coal | 7.5 | 56.03 | ||
raw coal | 100.0 | 11.38 |
From the test results, we can see:
1. The flotation flotation adopts a new process of branch flow flotation, and the fuel consumption is reduced from 1.5 kg/ton to 0.98 kg/ton, saving 1/3 of the consumption. The clean coal ash decreased from 8.29% to 7.87~7.92%, which improved the quality of clean coal.
2. The flotation of coal slurry adopts the new agent yy oil-P8201, and the yield of refined coal can be increased by 3% to 95.6%.
3. Coal flotation flotation adopts a new process, a branch flow flotation and a new agent, yy oil-P820l, which is expected to reduce the consumption of chemicals, improve the yield of clean coal, and improve the quality of clean coal. This is of great significance for the development of China's energy industry.
This article originally contained "Coal Technology" 1985, No2, 24. ☺
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