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近几年来,针对手选废石块度大,给料量又极不均匀等问题,对废石样品的取样方法进行了不断的改进。我矿现在使用的自动计时取样的斗室矿石取样机(简称矿石取样机)基本上保证样品的代表性,再辅之以现场进行试样加工、破碎工序,更好地解决了块度大、样品量多、难破碎的问题,准确及时反映手选质量,使废石选出率由原来的32%左右上升到40%左右,废石品位由原来的0.023%下降到0.016%左右。矿石取样机由矿斗,An—1型自动取样机,0.6千瓦交流电动机三部分组成。An—1型自动取样机刀口改为矿斗式进行截样。
In recent years, aiming at the problems such as large size of hand-picked waste rock and extremely uneven feeding amount, the sampling method of waste rock samples has been continuously improved. I now mine the use of automatic timing sampling bucket chamber ore sampling machine (referred to as ore sampling machine) basically guarantee the representativeness of the sample, supplemented by on-site sample processing, crushing process, to better solve the large block size, sample Quantity and difficult to be broken, accurate and timely reflect the handset quality, the selection rate of waste rock increased from about 32% to about 40%, the waste rock grade dropped from 0.023% to 0.016% or so. Ore sampling machine from the mining bucket, An-1-type automatic sampling machine, 0.6-kilowatt AC motor composed of three parts. An-1-type automatic sampling machine blade instead of mining cut-off type.