Huili Nickel beneficiation plant originally Beijing Nonferrous Metallurgy Design Institute of design, scale mining 500t / d, and has annual output of 1,200 tons of high-grade nickel matte crude refineries and other auxiliary production facilities, in the early 1960s simple operation, service life of 10 years. After the increase of geological reserves, the original design was in a difficult period, the factory was simple and the equipment was not matched. In 1964, it was filled and replenished by Kunming Metallurgical Design Institute, and was re-established and put into operation at the end of 65. The mining and selection scale is 500t/d, and the service period is 14 years. The best level of history is 1978, with an average throughput of 556 t/d. The original ore grade is 0.99% and the copper grade is 0.49%.
project | Name and specification | Number of units | Maximum throughput | |||
First, broken mine | Tons/tables·hours | Product granularity (mm) | Drainage width (mm) | Ore density | ||
Coarse | PEF 600×900 | 1 | 48~50 | -150 | 80～85 | |
Broken | PEF 400×600 | 1 | 17~20 | -90 | 65~70 | |
KCД900 | 1 | 55～57 | -50 | 15~18 | ||
Finely broken | OMДφ900 | 1 | 34~36 | -18 | 11~13 | 1.74 |
Second, grinding classification | Tons/tables·hours | Feeding granularity (mm) | Grinding fineness -200 mesh% | |||
One section | Conical ball mill Φ2400×1200 | 3 | 9.5~10 | -18 | 45~50 | |
Second paragraph | Conical ball mill Φ2400×1200 | 1 | 10~12 | -0.92 | 60～65 | |
Third, flotation | m 3 / ton · day | Working concentration (%) | Feed concentration (mm) | |||
One time selection | Rough selection 5A | 6 | 0.0132 | 40~42 | -0.92 | |
Featured 5A | 2 | 0.0043 | 23~25 | |||
Secondary selection | Rough selection 5A | 3 | 0.0132 | 32~34 | -0.272 | |
Featured 5A | 1 | 0.0022 | 29～31 | |||
Three times | Rough selection 5A | 6 | 0.0132 | 20~22 | -0.152 | |
Featured 5A | 2 | 0.0043 | 18~19 | |||
Sweep 5A | 46 | 0.0106 | 18~19 | |||
Decopper | Copper and nickel separated once | 2 | 12 to 16 | |||
Second time | 1 | 8~12 | ||||
Fourth, dehydration | t/m 2 | Feed concentration (%) | Excretion concentration filter and moisture% | Concentrate density | ||
concentrate | Peripheral drive Φ15M | 1 | 0.35 | 27~30 | 60～70 | 3.4 to 3.6 |
Copper concentrate sedimentation tank | 2 | |||||
filter | Cylinder filter (nickel) 10 m 2 | 2 | 4.79 | 50~60 | 16.5~17 | 3.4 to 3.6 |
Cylinder filter (copper) 10 m 2 | 1 | 40~60 | 13~14 | |||
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