在加拿大多伦多以东约110哩的马默拉(Marmora)矿山,所开采的磁跌矿含铁品位约40％。采用露天开采,矿石从原矿磨至—100网目,经磁选富集到含铁达67％然后送高炉制粒。浓缩机给矿量的控制图1所示的浓缩机控制系统具体做法如下,当选矿厂的产量超过制粒工厂的需要量时,精矿用砂泵扬至浓缩机,浓缩机中的矿浆面一旦达到预定的上限,这 At about 110 miles of the Marmora mine east of Toronto, Canada, about 40% of the magnetite ore is mined. The use of open-pit mining, grinding ore from ore to -100 mesh, enriched by magnetic separation to 67% of iron and then sent to blast furnace granulation. Thickener to control the amount of ore Thickener control system shown in Figure 1, the specific practices are as follows, when the concentrator’s output exceeds the requirements of the granulation plant, the concentrate with sand pump Yang thickener, thickener pulp surface Once the predetermined upper limit is reached, this